CMT1945-0000-00PN0U0A40G - CREE

PRODUCT FAMILY DATA SHEET

XLamp® and EasyWhite® are registered trademarks and eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

Cree, Inc.

4600 Silicon Drive

Durham, NC 27703

USA Tel: +1.919.313.5300

WWW.CREE.COM/XLAMP

CLD-DS166 REV 6

Cree® XLamp® CMT1945 LED

PRODUCT DESCRIPTION

The Cree XLamp® High-Current

LED Array family is optimized for

best‑in‑class lumen output, efcacy

and reliability at high drive currents.

XLamp CMT LEDs deliver performance

in industry-compatible packages and

LESes, enabling lighting manufacturers

to upgrade their designs for applications

such as track, downlight and outdoor

lighting.

High-Current LED Arrays are now

available in two different versions:

Standard and eTone™ LEDs.

The eTone version delivers beautiful 90

CRI light quality at the same efcacy

as today’s standard 80 CRI LEDs.

Featuring the same mechanical and

optical characteristics as the Standard

version, the eTone LEDs allow easy

upgrades from 80 CRI to 90 CRI without

sacricing performance.

FEATURES

• 14.5-mm optical source

• Cree EasyWhite® 2-, 3- and 5-step

binning

• Premium Color 2- and 3-step binning

• Standard & Premium Color LEDs

available in 70, 80, 90 and 95 CRI

minimum options

• eTone LEDs available in 90 and 95

CRI minimum options

• Forward voltage option: 36-V class

• 85°C binning and characterization

• Maximum drive current: 2500mA

• 115° viewing angle, uniform

chromaticity profile

• Top-side solder connections

• RoHS and REACh compliant

• UL® recognized component

(E349212)

TABLE OF CONTENTS

Characteristics ............................................2

Operating Limits ..........................................3

Flux Characteristics, Order Codes & Bins -

Standard LEDs .............................................4

Flux Characteristics, Order Codes & Bins -

Standard LEDs, Premium Color ..................5

Flux Characteristics, Order Codes and

Bins - eTone™ LEDs .....................................6

Relative Spectral Power Distribution -

Standard LEDs .............................................7

Relative Spectral Power Distribution -

Standard LEDs, Premium Color ..................8

Relative Spectral Power Distribution -

eTone™ LEDs ............................................ 10

Electrical Characteristics ......................... 11

Relative Luminous Flux ............................ 12

Typical Spatial Distribution ...................... 12

Performance Groups - Chromaticity ....... 13

Premium Color Performance Groups -

Chromaticity ............................................. 14

Cree EasyWhite® Bins Plotted on the

1931 CIE Color Space .............................. 15

Cree Premium Color Bins Plotted on the

1931 CIE Color Space .............................. 16

Bin and Order Code Formats ................... 18

Mechanical Dimensions .......................... 19

Thermal Design ........................................ 20

Notes ........................................................ 21

Packaging ................................................. 22

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

2

XLAMP® CMT1945 LED

CHARACTERISTICS

Characteristics Unit Minimum Typical Maximum

Viewing angle (FWHM) degrees 115

ESD withstand voltage (JEDEC JS-001-2012) V Class 3A

DC forward current - Standard mA 2500*

DC forward current - eTone mA 1440*

Reverse current mA 0.1

Forward voltage (@ 1200mA, 85°C) V 34.7 38.2

* Refer to the Operating Limits section.

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

3

XLAMP® CMT1945 LED

OPERATING LIMITS

The maximum current rating of the CMT1945 depends on the case temperature (Tc) when the LED has reached thermal equilibrium

under steady-state operation. The graph shown below assumes that the system design employs good thermal management (thermal

interface material and heat sink) and may vary when poor thermal management is employed. Either solder pad shown in the Mechanical

Dimensions section on page 19 can be used as the Tc measurement point.

Another important factor in good thermal management is the temperature of the Light Emitting Surface (LES). Cree recommends a

maximum LES temperature of 140°C to ensure optimal LED lifetime. Please refer to the Thermal Design section on page 20 for more

information on LES temperature measurement.

CMT1945 - Standard

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

2750

025 50 75 100 125 150

If (mA)

Case Temperature (°C)

85 °C, 2500 mA

125 °C,

962 mA

Standard LEDs

CMT1945 - eTone

0

125

250

375

500

625

750

875

1000

1125

1250

1375

1500

025 50 75 100 125 150

If (mA)

Case Temperature (°C)

85 °C,1440 mA

eTone LEDs

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

4

XLAMP® CMT1945 LED

Notes

• Cree maintains a tolerance of ±7% on ux and power measurements, ±0.005 on chromaticity (CCx, CCy) measurements and a tolerance of ±2 on CRI

measurements. See the Measurements section (page 21).

• For 80 CRI minimum LEDs, CRI R9 minimum is 0 with a ±2 tolerance. For 90 CRI minimum LEDs, CRI R9 typical is 60.

FLUX CHARACTERISTICS, ORDER CODES & BINS - STANDARD LEDS (IF = 1200mA, TJ=85°C)

The following table provides order codes for XLamp CMT1945 LEDs. For a complete description of the order code nomenclature, please

see the Bin and Order Code Formats section (page 18).

Nominal

CCT

CRI Minimum

Luminous

Flux (lm)

Typical

Luminous

Flux (lm)

2-Step 3-Step 5-Step

Min. Typ Group Order Code Group Order Code Group Order Code

6500 K

70 73 6126 6587 65E CMT1945-0000-

000N0B0A65E

80 82 5723 6153 65E CMT1945-0000-

000N0H0A65E

5700 K

70 73 6251 6721 57E CMT1945-0000-

000N0B0A57E

80 82 5839 6279 57E CMT1945-0000-

000N0H0A57E

90 92 4967 5341 57G CMT1945-0000-

000N0U0A57G

5000K

70 73 6070 6526 50E CMT1945-0000-

000N0B0A50E

80 82 5670 6097 50G CMT1945-0000-

000N0H0A50G

90 92 4967 5341 50G CMT1945-0000-

000N0U0A50G

4000K

70 73 6024 6477 40E CMT1945-0000-

000N0B0A40E

80 82 5606 6027 40H CMT1945-0000-

000N0H0A40H 40G CMT1945-0000-

000N0H0A40G

90 92 4827 5190 40H CMT1945-0000-

000N0U0A40H 40G CMT1945-0000-

000N0U0A40G

3500K

80 82 5469 5880 35H CMT1945-0000-

000N0H0A35H 35G CMT1945-0000-

000N0H0A35G

90 92 4694 5047 35H CMT1945-0000-

000N0U0A35H 35G CMT1945-0000-

000N0U0A35G

3000K

70 73 5606 6027 30E CMT1945-0000-

000N0B0A30E

80 82 5310 5710 30H CMT1945-0000-

000N0H0A30H 30G CMT1945-0000-

000N0H0A30G

90 92 4490 4828 30H CMT1945-0000-

000N0U0A30H 30G CMT1945-0000-

000N0U0A30G

2700K

80 82 5095 5479 27H CMT1945-0000-

000N0H0A27H 27G CMT1945-0000-

000N0H0A27G

90 92 4287 4609 27H CMT1945-0000-

000N0U0A27H 27G CMT1945-0000-

000N0U0A27G

2200K 80 82 4490 4828 22G CMT1945-0000-

000N0H0A22G

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

5

XLAMP® CMT1945 LED

Notes

• Cree maintains a tolerance of ±7% on ux and power measurements, ±0.005 on chromaticity (CCx, CCy) measurements and a tolerance of ±2 on CRI

measurements. See the Measurements section (page 21).

• For 80 CRI minimum LEDs, CRI R9 minimum is 0 with a ±2 tolerance. For 90 CRI minimum LEDs, CRI R9 typical is 60.

FLUX CHARACTERISTICS, ORDER CODES & BINS - STANDARD LEDS, PREMIUM COLOR (IF = 1200mA, TJ = 85°C)

Fidelity

Nominal

CCT

CRI Minimum

Luminous

Flux (lm)

Typical

Luminous

Flux (lm)

2-Step

Min. Typ Group Order Code

4000K 95 98 4323 4648 L5A CMT1945-0000-000N0Z0AL5A

3500K 95 98 4207 4524 35H CMT1945-0000-000N0Z0A35H

3000K 95 98 3934 4230 30H CMT1945-0000-000N0Z0A30H

2700K 95 98 3725 4005 27H CMT1945-0000-000N0Z0A27H

Specialty

Nominal

CCT

CRI Minimum

Luminous

Flux (lm)

Typical

Luminous

Flux (lm)

2-Step 3-Step

Min. Typ Group Order Code Group Order Code Group Order Code

3100K 90 92 4490 4828 31Q CMT1945-0000-

000N0U0A31Q

3000K

80 82 5310 5710 L7B CMT1945-0000-

000N0H0AL7B

90 92 4490 4828 30Q CMT1945-0000-

000N0U0A30Q 30U CMT1945-0000-

000N0U0A30U

95 98 3934 4230 L7C CMT1945-0000-

000N0Z0AL7C

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

6

XLAMP® CMT1945 LED

FLUX CHARACTERISTICS, ORDER CODES AND BINS - ETONE™ LEDS (IF = 1200mA, TJ = 85°C)

Nominal

CCT

CRI Minimum

Luminous

Flux (lm)

Typical

Luminous

Flux (lm)

2-Step 3-Step

Min. Typ Group Order Code Group Order Code

4000K 90 92 5157 5545 40H CMT1945-0000-00PN0U0A40H 40G CMT1945-0000-00PN0U0A40G

95 98 4669 5020 L5A CMT1945-0000-00PN0Z0AL5A

3500K

90 92 5086 5469 35H CMT1945-0000-00PN0U0A35H 35G CMT1945-0000-00PN0U0A35G

95 98 4586 4931 35H CMT1945-0000-00PN0Z0A35H

3000K

90 92 5045 5425 30H CMT1945-0000-00PN0U0A30H 30G CMT1945-0000-00PN0U0A30G

95 98 4327 4653 30H CMT1945-0000-00PN0Z0A30H

2700K

90 92 4841 5205 27H CMT1945-0000-00PN0U0A27H 27G CMT1945-0000-00PN0U0A27G

95 98 4134 4446 27H CMT1945-0000-00PN0Z0A27H

Specialty

Nominal

CCT

CRI Minimum

Luminous

Flux (lm)

Typical

Luminous

Flux (lm)

2-Step 3-Step

Min. Typ Group Order Code Group Order Code Group Order Code

3100K 90 92 4992 5367 31Q CMT1945-0000-

00PN0U0A31Q

3000K

90 92 5045 5425 30Q CMT1945-0000-

00PN0U0A30Q 30U CMT1945-0000-

00PN0U0A30U

95 98 3895 4188 L7C CMT1945-0000-

00PN0Z0AL7C

Notes

• Cree maintains a tolerance of ±7% on ux and power measurements, ±0.005 on chromaticity (CCx, CCy) measurements and a tolerance of ±2 on CRI

measurements. See the Measurements section (page 21).

• For 80 CRI minimum LEDs, CRI R9 minimum is 0 with a ±2 tolerance. For 90 CRI minimum LEDs, CRI R9 typical is 60.

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

7

XLAMP® CMT1945 LED

RELATIVE SPECTRAL POWER DISTRIBUTION - STANDARD LEDS

The following graphs are the result of a series of pulsed measurements at 1200mA and TJ = 85°C.

Relative Spectral Power Distribution

EZW 70 CRI

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

6500 K, 70 CRI

5700 K, 70 CRI

5000 K, 70 CRI

4000 K, 70 CRI

3000 K, 70 CRI

EZW 80 CRI

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

6500 K, 80 CRI

5700 K, 80 CRI

5000 K, 80 CRI

4000 K, 80 CRI

3500 K, 80 CRI

3000 K, 80 CRI

2700 K, 80 CRI

2200 K, 80 CRI

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

8

XLAMP® CMT1945 LED

RELATIVE SPECTRAL POWER DISTRIBUTION - STANDARD LEDS (CONTINUED)

RELATIVE SPECTRAL POWER DISTRIBUTION - STANDARD LEDS, PREMIUM COLOR

The following graphs are the result of a series of pulsed measurements at 1200mA and TJ = 85°C.

Fidelity

EZW 90 CRI

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

5700 K, 90 CRI

5000 K, 90 CRI

4000 K, 90 CRI

3500 K, 90 CRI

3000 K, 90 CRI

2700 K, 90 CRI

Fidelity

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

4000 K, Z CRI

3500 K, Z CRI

3000 K, Z CRI

2700 K, Z CRI

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

9

XLAMP® CMT1945 LED

RELATIVE SPECTRAL POWER DISTRIBUTION - STANDARD LEDS, PREMIUM COLOR (CONTINUED)

Specialty

Speciality

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

31Q, 3100 K, 90 CRI

Speciality

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

30Q, 3000 K, 90 CRI

30U, 3000 K, 90 CRI

L7B, 3000 K, 80 CRI

L7C, 3000 K, Z CRI

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

10

XLAMP® CMT1945 LED

RELATIVE SPECTRAL POWER DISTRIBUTION - ETONE™ LEDS

The following graphs are the result of a series of pulsed measurements at 1200mA and TJ = 85°C.

eTone

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

4000 K, 90 CRI

3500 K,90 CRI

3000 K, 90 CRI

2700 K, 90 CRI

eTone

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

380 430 480 530 580 630 680 730 780

Relative Spectral Power

Wavelength (nm)

4000 K, Z CRI

3500 K, Z CRI

3000 K, Z CRI

2700 K, Z CRI

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

11

XLAMP® CMT1945 LED

ELECTRICAL CHARACTERISTICS

The following graph is the result of a series of steady-state measurements.

31

32

33

34

35

36

37

38

39

300 500 700 900 1100 1300 1500 1700 1900 2100 2300 2500

Voltage (V)

Current (mA)

Tc = 25 °C

Tc = 55 °C

Tc = 85 °C

Tc = 105 °C

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

12

XLAMP® CMT1945 LED

RELATIVE LUMINOUS FLUX

The relative luminous ux values provided below are the ratio of:

• Measurements of CMT1945 at steady-state operation at the given conditions, divided by

• Flux measured during binning, which is a pulsed measurement at 1200mA at TJ = 85°C.

For example, at steady‑state operation of Tc = 55°C, IF = 2100mA, the relative luminous ux ratio is 160% in the chart below. A CMT1945

LED that measures 5710lm during binning will deliver 9136lm (5710 * 1.6) at steady‑state operation of Tc=55°C, IF = 2100mA.

TYPICAL SPATIAL DISTRIBUTION

0%

20%

40%

60%

80%

100%

120%

140%

160%

180%

200%

300 500 700 900 1100 1300 1500 1700 1900 2100 2300 2500

Relative Luminous Flux

Current (mA)

Tc = 25 °C

Tc = 55 °C

Tc = 85 °C

Tc = 105 °C

Far Field

0%

20%

40%

60%

80%

100%

-90 -70 -50 -30 -10 10 30 50 70 90

Relative Luminous Intensity

Angle (º)

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

13

XLAMP® CMT1945 LED

PERFORMANCE GROUPS - CHROMATICITY (TJ = 85°C)

XLamp CMT1945 LEDs are tested for chromaticity and placed into one of the regions dened by the following bounding coordinates.

EasyWhite Color Temperatures – 2-Step

Code CCT x y

40H 4000 K

0.3777 0.3739

0.3797 0.3816

0.3861 0.3855

0.3838 0.3777

35H 3500 K

0.4022 0.3858

0.4053 0.3942

0.4125 0.3977

0.4091 0.3891

30H 3000 K

0.4287 0.3975

0.4328 0.4064

0.4390 0.4086

0.4347 0.3996

27H 2700 K

0.4524 0.4048

0.4574 0.4140

0.4633 0.4154

0.4581 0.4062

EasyWhite Color Temperatures – 3-Step Ellipse

Bin Code CCT Center Point Major Axis Minor Axis Rotation Angle

(°)

x y a b

57G 5700K 0.3287 0.3417 0.00738 0.00360 72.0

50G 5000K 0.3447 0.3553 0.00840 0.00312 65.0

40G 4000K 0.3818 0.3797 0.00939 0.00402 53.7

35G 3500K 0.4073 0.3917 0.00927 0.00414 54.0

30G 3000K 0.4338 0.4030 0.00834 0.00408 53.2

27G 2700K 0.4577 0.4099 0.00834 0.00420 48.5

22G 2200K 0.5066 0.4158 0.00980 0.00480 45.5

EasyWhite Color Temperatures – 5-Step Ellipse

Bin Code CCT Center Point Major Axis Minor Axis Rotation Angle

(°)

x y a b

65E 6500K 0.3123 0.3282 0.01110 0.00550 61.0

57E 5700K 0.3287 0.3417 0.01230 0.00600 72.0

50E 5000K 0.3447 0.3553 0.01400 0.00520 65.0

40E 4000K 0.3818 0.3797 0.01565 0.00670 53.7

30E 3000K 0.4338 0.4030 0.01390 0.00680 53.2

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

14

XLAMP® CMT1945 LED

PREMIUM COLOR PERFORMANCE GROUPS - CHROMATICITY (TJ = 85°C)

XLamp CMT1945 LEDs are tested for chromaticity and placed into one of the regions dened by the following bounding coordinates.

Fidelity

EasyWhite Color Temperatures – 2-Step

Code CCT x y

L5A 4000K

0.3764 0.3711

0.3784 0.3787

0.3847 0.3826

0.3825 0.3748

35H 3500K

0.4022 0.3858

0.4053 0.3942

0.4125 0.3977

0.4091 0.3891

30H 3000K

0.4287 0.3975

0.4328 0.4064

0.4390 0.4086

0.4347 0.3996

27H 2700K

0.4524 0.4048

0.4574 0.4140

0.4633 0.4154

0.4581 0.4062

Specialty

EasyWhite Color Temperatures – 2-Step

Code CCT x y

L7B 3000K

0.4263 0.3848

0.4296 0.3916

0.4361 0.3938

0.4326 0.3868

L7C 3000K

0.4192 0.3754

0.4224 0.3823

0.4291 0.3847

0.4257 0.3777

EasyWhite Color Temperatures – 3-Step Ellipse

Bin Code CCT Center Point Major Axis Minor Axis Rotation Angle

(°)

x y a b

31Q 3100K 0.4236 0.3888 0.00848 0.00455 50.3

30Q 3000K 0.4305 0.3935 0.00834 0.00408 53.2

30U 3000K 0.4274 0.3837 0.00834 0.00408 53.2

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

15

XLAMP® CMT1945 LED

CREE EASYWHITE® BINS PLOTTED ON THE 1931 CIE COLOR SPACE (TJ = 85°C)

2700 K

3000 K

3500 K

4000 K

4500 K

5000 K

5700 K

6500 K

7000K

2450 K 2200 K

0.31

0.32

0.33

0.34

0.35

0.36

0.37

0.38

0.39

0.40

0.41

0.42

0.43

0.44

0.45

0.29

0.30

0.31

0.32

0.33

0.34

0.35

0.36

0.37

0.38

0.39

0.40

0.41

0.42

0.43

0.44

0.45

0.46

0.47

0.48

0.49

0.50

0.51

0.52

0.53

0.54

CCy

CCx

ANSI C78.377 Quadrangle

EasyWhite 5-step

EasyWhite 3-step

EasyWhite 2-step

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

16

XLAMP® CMT1945 LED

CREE PREMIUM COLOR BINS PLOTTED ON THE 1931 CIE COLOR SPACE (TJ = 85°C)

Fidelity (2-step)

2700K

3000K

3500K

4000K

4500K

L5A

0.34

0.35

0.36

0.37

0.38

0.39

0.40

0.41

0.42

0.43

0.44

0.35

0.36

0.37

0.38

0.39

0.40

0.41

0.42

0.43

0.44

0.45

0.46

0.47

0.48

CCy

CCx

ANSI C78.377 Quadrangle

35H

30H

27H

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

17

XLAMP® CMT1945 LED

CREE PREMIUM COLOR BINS PLOTTED ON THE 1931 CIE COLOR SPACE (TJ = 85°C) - CONTINUED

Speciality (2-step)

Speciality (3-step)

3000 K

3500 K

L7B

L7C

0.37

0.38

0.39

0.40

0.41

0.42

0.43

0.44

0.41

0.42

0.43

0.44

0.45

0.46

CCy

CCx

ANSI C78.377 Quadrangle

3000K

3500K

30Q

30U

31Q

0.37

0.38

0.39

0.40

0.41

0.42

0.43

0.44

0.41

0.42

0.43

0.44

0.45

0.46

CCy

CCx

ANSI C78.377 Quadrangle

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

18

XLAMP® CMT1945 LED

BIN AND ORDER CODE FORMATS

Bin codes and order codes are congured as follows:

Order Code Bin Code

SSSSSCC-HHHH-HHEGGRNNNNN

Series = CMT19

Internal code

Version

0 = Standard

P = eTone

CRI Specification

B = 70 CRI minimum

H = 80 CRI minimum

U = 90 CRI minimum

Z = 95 CRI minimum

Kit code

Vf class

N0 = 36-V class

Performance class

SSSSSCC-WWW-FF-GGR-EAAAA

Series = CMT19

Chromaticity bin

Vf class

N0 = 36-V class

Version

0 = Standard

P = eTone

Internal code

CRI Specification

B = 70 CRI minimum

H = 80 CRI minimum

U = 90 CRI minimum

Z = 95 CRI minimum

Flux bin

0A = Not binned into flux bins

Performance class

order code and bin code headings and diagrams are in a table

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

19

XLAMP® CMT1945 LED

MECHANICAL DIMENSIONS

Dimensions are in mm.

Tolerances unless otherwise specied: ±.13

x° ± 1°

Meaning of LED marking

T1945N = 36-V CMT1945

T1945Ne = 36-V CMT1945 eTone

X1 X2 X3 X4 X5

X1 CCT

1 = 6500K

…

8 = 2700K

X2

M = EasyWhite or

Fidelity LED on the

black-body line

Q = Specialty LED below

the black-body line

U = Specialty LED below

the black-body line

X3 X4 Flux bin

0A = Not binned into ux

bins

X5 CRI

B = 70 CRI min

H = 80 CRI min

U = 90 CRI min

Z = 95 CRI min

Tc measurement point: either the anode or cathode solder pad

SIZE

TITLE

OF

REV.

SHEET

C

DRAWING NO.

DATE

CHECK

FINAL PROTECTIVE FINISH

MATERIAL

APPROVED

DRAWN BY

THIRD ANGLE PROJECTION

SCALE

A

B

C

D

123456

6 5 4 3 2 1

A

B

C

D

Phone (919) 313-5300

Fax (919) 313-5558

4600 Silicon Drive

Durham, N.C 27703

UNAUTHORIZED PERSON WITHOUT

THE WRITTEN CONSENT

MAY NOT BE COPIED, REPRODUCED OR DISCLOSED TO ANY

CONFIDENTIAL INFORMATION OF CREE, INC. THIS PLOT

CONTAINED WITHIN ARE THE PROPRIETARY AND

CREE CONFIDENTIAL. THIS PLOT AND THE INFORMATION

OF CREE INC.

NOTICE

X .5

.XXX .25

.XX .75

.X 1.5

FOR SHEET METAL PARTS ONLY

.XX .25

.XXX .125

X .5

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN

MILLIMETERS AND AFTER FINISH.

TOLERANCE UNLESS SPECIFIED:

SURFACE FINISH:

1.6

ø14.5

±0.2

ø16.0

±0.2

R2.00

5.46

3.19

5.46

3.19

5.46

3.19

.90±.15

.55±.1

R.60

19.00

±0.2

19.00

±0.2

1/28.000

B

2500-00714

CMT19XX MARKETING SPEC

05/08/12D. CRONIN

REVISONS

REV DESCRIPTION BY DATE APP'D

ALL DIMENSIONS ARE .13MM UNLESS OTHERWISE NOTED

Marking 1

T1945: product family (CMT1945)

N:36V Voltage Class

Marking 2

X X CCT (eg. 27.2700K, 30:3000K)

X X : Flux Bin

X :CRI (B:70 H:80, U:90, Z:95

12

34

5

OPTICAL REFERENCE

OPTICAL

REFERENCE

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

20

XLAMP® CMT1945 LED

THERMAL DESIGN

The CMT family of LED arrays can include over a hundred different LED die inside one package, and thus over a hundred different junction

temperatures (TJ). Cree has intentionally removed junction-temperature-based operating limits and replaced the commonplace maximum

TJ calculations with maximum ratings based on forward current (IF) and case temperature (Tc). No additional calculations are required to

ensure the CMT LED is being operated within its designed limits. LES temperature measurement provides additional verication of good

thermal design. Please refer to page 3 for the Operating Limit specication.

There is no need to calculate for TJ inside the package, as the thermal management design process, specically from solder point (TSP) to

ambient (Ta), remains identical to any other LED component. For more information on thermal management of Cree XLamp LEDs, please

refer to the Thermal Management application note. For CMT soldering recommendations and more information on thermal interface

materials (TIM), LES temperature measurement, and connection methods, please refer to the Cree XLamp CM Family LEDs soldering and

handling document.

To keep the CMT1945 LED at or below the maximum rated Tc, the case to ambient temperature

thermal resistance (R_c-a) must be at or below the maximum R_c-a value shown on the following

graph, depending on the operating environment. The y-axis in the graph is a base 10 logarithmic

scale.

As the gure at right shows, the R_c‑a value is the sum of the thermal resistance of the TIM (R_tim)

plus the thermal resistance of the heat sink (R_hs).

R_j-c

Tc

R_tim

R_hs

Ta

R_j-c

Tc

R_c-a

Ta

CMT1945

0.01

0.10

1.00

10.00

100.00

300 500 700 900 1100 1300 1500 1700 1900 2100 2300 2500

Maximum R_c-a

Current (mA)

Ta = 25 °C

Ta = 55 °C

Ta = 85 °C

Ta = 105 °C

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

21

XLAMP® CMT1945 LED

NOTES

Measurements

The luminous ux, radiant power, chromaticity, forward voltage and CRI measurements in this document are binning specications only

and solely represent product measurements as of the date of shipment. These measurements will change over time based on a number

of factors that are not within Cree’s control and are not intended or provided as operational specications for the products. Calculated

values are provided for informational purposes only and are not intended or provided as specications.

Pre-Release Qualication Testing

Please read the LED Reliability Overview for details of the qualication process Cree applies to ensure long‑term reliability for XLamp

LEDs and details of Cree’s pre‑release qualication testing for XLamp LEDs. Cree did not perform Room Temperature Operating Life

(RTOL) testing on the CMT1945 LED.

Lumen Maintenance

Cree now uses standardized IES LM-80-08 and TM-21-11 methods for collecting long-term data and extrapolating LED lumen maintenance.

For information on the specic LM‑80 data sets available for this LED, refer to the public LM-80 results document.

Please read the Long-Term Lumen Maintenance application note for more details on Cree’s lumen maintenance testing and forecasting.

Please read the Thermal Management application note for details on how thermal design, ambient temperature, and drive current affect

the LED junction temperature.

RoHS Compliance

The levels of RoHS restricted materials in this product are below the maximum concentration values (also referred to as the threshold

limits) permitted for such substances, or are used in an exempted application, in accordance with EU Directive 2011/65/EC (RoHS2),

as implemented January 2, 2013. RoHS Declarations for this product can be obtained from your Cree representative or rom the Product

Ecology section of the Cree website.

REACh Compliance

REACh substances of very high concern (SVHCs) information is available for this product. Since the European Chemical Agency (ECHA)

has published notice of their intent to frequently revise the SVHC listing for the foreseeable future, please contact a Cree representative to

insure you get the most up-to-date REACh SVHC Declaration. REACh banned substance information (REACh Article 67) is also available

upon request.

UL® Recognized Component

This product meets the requirements to be considered a UL Recognized Component with Level 4 enclosure consideration. The LED

package or a portion thereof has been investigated as a re and electrical enclosure per ANSI/UL 8750.

Vision Advisory

WARNING: Do not look at an exposed lamp in operation. Eye injury can result. For more information about LEDs and eye safety, please

refer to the LED Eye Safety application note.

eTone™ is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.

22

XLAMP® CMT1945 LED

PACKAGING

Cree CMT1945 LEDs are packaged in trays of 20. Five trays are sealed in an anti-static bag and placed inside a carton, for a total of 100

LEDs per carton. Each carton contains 100 LEDs from the same performance bin.

Dimensions are in inches.

Tolerances: ±.13

x° ±1°

SIZE

TITLE

OF

REV.

SHEET

C

DRAWING NO.

DATE

CHECK

FINAL PROTECTIVE FINISH

MATERIAL

APPROVED

DRAWN BY

THIRD ANGLE PROJECTION

.X ± 0.1

X° ± 2 °

.XXX ± .010

.XX ± .03

.X ± .06

FOR SHEET METAL PARTS ONLY

.XX ± .05

.XXX ± .005

X° ± 1 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN

MILLIMETERS & BEFORE FINISH.

TOLERANCE UNLESS SPECIFIED:

SCALE

A

B

C

D

123456

6 5 4 3 2 1

A

B

C

D

Phone (919) 361-4770

Fax (919) 313-5303

4600 Silicon Drive

Durham, N.C 27703

UNAUTHORIZED PERSON WITHOUT

THE WRITTEN CONSENT

MAY NOT BE COPIED, REPRODUCED OR DISCLOSED TO ANY

CONFIDENTIAL INFORMATION OF CREE, INC. THIS PLOT

CONTAINED WITHIN ARE THE PROPRIETARY AND

CREE CONFIDENTIAL. THIS PLOT AND THE INFORMATION

OF CREE INC.

NOTICE

5.875

.38

R.375

.875

1/10.500

A

CXA15XX_DATASHEET_BAG2013

CXA15XX_DATASHEET

BAG

LABEL WITH CREE BIN

CODE, QUANTITY, LOT #

LABEL WITH CREE BIN

CODE, QUANTITY, LOT #

LABEL WITH CREE BIN

CODE, QUANTITY, LOT #

PATENT LABEL IS LOCATED

ON UNDERSIDE OF COVER

PATENT LABEL IS LOCATED

ON UNDERSIDE OF CARTON

LABEL WITH CREE BIN

CODE, QUANTITY, LOT #

SIZE

TITLE

OF

REV.

SHEET

C

DRAWING NO.

DATE

CHECK

FINAL PROTECTIVE FINISH

MATERIAL

APPROVED

DRAWN BY

THIRD ANGLE PROJECTION

.X ± 0.1

X° ± 2 °

.XXX ± .010

.XX ± .03

.X ± .06

FOR SHEET METAL PARTS ONLY

.XX ± .05

.XXX ± .005

X° ± 1 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN

MILLIMETERS & BEFORE FINISH.

TOLERANCE UNLESS SPECIFIED:

SCALE

A

B

C

D

123456

6 5 4 3 2 1

A

B

C

D

Phone (919) 361-4770

Fax (919) 313-5303

4600 Silicon Drive

Durham, N.C 27703

UNAUTHORIZED PERSON WITHOUT

THE WRITTEN CONSENT

MAY NOT BE COPIED, REPRODUCED OR DISCLOSED TO ANY

CONFIDENTIAL INFORMATION OF CREE, INC. THIS PLOT

CONTAINED WITHIN ARE THE PROPRIETARY AND

CREE CONFIDENTIAL. THIS PLOT AND THE INFORMATION

OF CREE INC.

NOTICE

5.875

.38

R.375

.875

1/10.500

A

CXA15XX_DATASHEET_BAG2013

CXA15XX_DATASHEET

BAG

LABEL WITH CREE BIN

CODE, QUANTITY, LOT #

LABEL WITH CREE BIN

CODE, QUANTITY, LOT #

LABEL WITH CREE BIN

CODE, QUANTITY, LOT #

PATENT LABEL IS LOCATED

ON UNDERSIDE OF COVER

LABEL WITH CREE BIN CODE,

QUANTITY, LOT # 1.063

7.125

7.625

1.125

R.375