LP3872ES2.5 - NATIONAL SEMICONDUCTOR

Features

• AEC-Q101 qualified

• Peak pulse power:

– 600 W (10/1000 μs) and 4 kW (8/20 μs)

• Stand-off voltage range: from 5 V to 70 V

• Unidirectional and bidirectional types

• Low leakage current:

– 0.2 μA at 25 °C and 1 μA at 85 °C

• Operating Tj max: 150 °C

• JEDEC registered package outline

• Lead finishing: matte tin plating

Complies with the following standards

• UL94, V0

• J-STD-020 MSL level 1

• J-STD-002, JESD 22-B102 E3 and MIL-STD-750, method 2026

• JESD-201 class 2 whisker test

• IPC7531 footprint and JEDEC registered package outline

• IEC 61000-4-4 level 4

– 4 k V

• ISO 10605, IEC 61000-4-2, C = 150 pF, R = 330 Ω exceeds level 4:

– 30 kV (air discharge)

– 30 kV (contact discharge)

• ISO 10605, C = 330 pF, R = 330 Ω exceeds level 4:

– 30 kV (air discharge)

– 30 kV (contact discharge)

• ISO 7637-2 (not applicable to parts with VRM lower than battery voltage)

– Pulse 1: VS = -150 V

– Pulse 2a: VS = +112 V

– Pulse 3a: VS = -220 V

– Pulse3b: VS = +150 V

Description

The SMA6TY Transil series has been designed to protect sensitive automotive

circuits against surges defined in ISO 7637-2 and against electrostatic discharges

according to ISO 10605.

The planar technology makes this device compatible with high-end circuits where low

leakage current and high junction temperature are required to provide reliability and

stability over time. SMA6TY are packaged in SMA.

Transil™ is a trademark of STMicroelectronics.

Product status link

SMA6TY

Automotive 600 W TVS in SMA

SMA6TY

Datasheet

DS6931 - Rev 5 - December 2018

For further information contact your local STMicroelectronics sales office.

www.st.com

1Characteristics

Table 1. Absolute maximum ratings (Tamb = 25 °C)

Symbol Parameter Value Unit

VPP Peak pulse voltage

ISO10605 (C = 330 pF, R = 330 Ω):

Contact discharge

Air discharge

ISO10605 / IEC 61000-4-2 (C = 150 pF, R = 330 Ω)

Contact discharge

Air discharge

PPP Peak pulse power dissipation 10/1000 µs, Tj initial = Tamb 600 W

TjOperating junction temperature range -40 to +150 °C

Tstg Storage temperature range -65 to +150 °C

TLMaximum lead temperature for soldering during 10 s 260 °C

Figure 1. Electrical characteristics - parameter definitions

VCLVBR VRM

IRM

IPP

IRM

IPP

VRMVBR VCL

Bidirectional device

VCL

VBR

VRM

IRM

IPP

Unidirectional device

VRM Stand-off voltage

IRM Leakage current @ VRM

VBR Breakdown voltage

VCL Clamping voltage

IPP Peak pulse current

VFForward voltage drop

αT Voltage temperature coefficient

RDDynamic resistance

SMA6TY

Characteristics

DS6931 - Rev 5 page 2/13

Table 2. Electrical characteristics (Tamb = 25 °C, unless otherwise specified)

Order code

IRM max at VRM VBR at IR10 / 1000 µs 8 / 20µs αT(1)

VCL(2) IPP(3) RDVCL(2) IPP(3) RD

25 °C 85 °C Min. Typ. Max. Max. Max. Max. Max.

µA V V mA V A Ω V A Ω 10-4/°C

SMA6T6V7AY/CAY 20 50 5.00 6.40 6.40 7.1 10 9.1 68.0 0.029 14.4 275 0.027 5.7

SMA6T7V6AY/CAY 20 50 6.50 7.20 7.60 8.0 10 10.2 56.0 0.04 15.2 266 0.027 6.1

SMA6T10AY/CAY 20 50 8.60 9.50 10.0 10.5 1 14.5 41.0 0.098 18.6 215 0.038 7.3

SMA6T12AY/CAY 0.2 1 10.2 11.4 12.0 12.6 1 16.7 36.0 0.114 21.7 184 0.049 7.8

SMA6T14AY/CAY 0.2 1 12.0 13.3 14.0 14.7 1 18.8 31.0 0.133 23.5 157 0.056 8.3

SMA6T15AY/CAY 0.2 1 12.8 14.3 15.0 15.8 1 21.2 28.0 0.193 27.2 147 0.078 8.4

SMA6T18AY/CAY 0.2 1 15.3 17.1 18.0 18.9 1 25.2 24.0 0.263 32.3 123 0.111 8.8

SMA6T22AY/CAY 0.2 1 18.8 20.9 22.0 23.1 1 30.6 20.0 0.375 39.3 102 0.159 9.2

SMA6T24AY/CAY 0.2 1 20.5 22.8 24.0 25.2 1 33.2 18.0 0.444 42.8 93.0 0.189 9.4

SMA6T28AY/CAY 0.2 1 24 26.7 28.1 29.5 1 37.8 16.0 0.516 44.3 80.0 0.184 9.6

SMA6T30AY/CAY 0.2 1 25.6 28.5 30.0 31.5 1 41.5 14.5 0.690 53.5 75.0 0.293 9.7

SMA6T33AY/CAY 0.2 1 28.2 31.4 33.0 34.7 1 45.7 13.1 0.840 59.0 68.0 0.357 9.8

SMA6T39AY/CAY 0.2 1 33.3 37.1 39.0 41.0 1 53.9 11.1 1.16 69.7 57.0 0.504 10.0

SMA6T47AY/CAY 0.2 1 40.0 44.4 46.7 49.1 1 62.8 9.70 1.42 73.6 48.0 0.511 10.1

SMA6T56AY/CAY 0.2 1 47.6 53.2 56.0 58.8 1 76.6 7.80 2.28 100 40 1.030 10.0

SMA6T68AY/CAY 0.2 1 58.1 64.6 68.0 71.4 1 92.0 6.50 3.17 121 33.0 1.50 10.4

SMA6T82AY/CAY 0.2 1 70.0 77.8 81.9 86.0 1 110 5.50 4.38 120 27 1.030 10.5

1. To calculate VBR or VCL versus junction temperature, use the following formulas:

• VBR at TJ = VBR at 25 °C x (1 + αT x (TJ - 25))

• VCL at TJ = VCL at 25 °C x (1 + αT x (TJ-25))

2. To calculate maximum clamping voltage at other surge level, use the following formula:

• VCLmax = VBR max + RD x IPPappli where IPPappli is the surge current in the application

3. Surge capability given for both directions for unidirectional and bidirectional types.

SMA6TY

Characteristics

DS6931 - Rev 5 page 3/13

1.1 Characteristics (curves)

Figure 2. Pulse definition for electrical characteristics

100

110

IPP%

t (µs)

tr = rise

time

tp = pulse duration time

Figure 3. Relative variation of peak power versus initial

junction temperature

100

110

0 25 50 75 100 125 150 175

T (°C)

10/1000 µs

Figure 4. Maximum peak pulse power versus exponential

pulse duration

PPP(kW)

0.1

1.0

10.0

0.01 0.10 1.00 10.00

Tjinitial = 25 °C

tP(ms)

Figure 5. Maximum clamping voltage versus peak pulse

current exponential waveform (maximum values)

0.1

1.0

10.0

100.0

1000.0

1 1 0 100 1000

IPP(A)

10/1000 µs

Tjinitial=25 °C

8/20 µs

VCL

(V)VCL

(V)

SMA6T6V7AY/CAY

SMA6T30AY/CAY

SMA6T82AY/CAY

SMA6TY

Characteristics (curves)

DS6931 - Rev 5 page 4/13

Figure 6. Junction capacitance versus reverse applied

voltage for unidirectional types

C(pF)

100

1000

10000

1 1 0 100 1000

F=1 MHz

VOSC=30 mVRMS

Tj=25 °C

SMA6T6V7AY

SMA6T30AY

SMA6T82AY

V (V)

Figure 7. Junction capacitance versus reverse applied

voltage for bidirectional types

C(pF)

100

1000

10000

1 1 0 100 1000

F=1 MHz

VOSC=30 mVRMS

Tj=25 °C

SMA6T6V7CAY

SMA6T30CAY

SMA6T82CAY V (V)

Figure 8. Leakage current versus junction temperature

I (nA)

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

25 50 75 100 125 150

VR=VRM

VRM > 10 V

VRM ≤10 V

T (°C)

Figure 9. Peak forward voltage drop versus peak forward

current

IFM(A)

1.E-02

1.E-01

1.E+00

1.E+01

0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4

Tj=25 °C

Tj=125 °C

VFM(V)

Figure 10. Relative variation of thermal impedance,

junction to ambient, versus pulse duration

Zth (j-a)/Rth (j-a)

0.01

0.10

1.00

1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03

Printed circuit board FR4,

copper surface = 1 cm2

Figure 11. Thermal resistance junction to ambient versus

copper surface under each lead

100

150

200

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

Rth(j-a) (°C/W)

SCu (cm²)

Single pulse on recommended footprint.Epoxy printed circuit

board FR4, 70 µm Cu thickness

SMA6TY

Characteristics (curves)

DS6931 - Rev 5 page 5/13

Figure 12. ISO7637-2 pulse 1: Vs = -150 V with 12 V

battery

5 A /div

500 µs /div

SMA6T30CAY

SMA6T30AY

10 V/div

Figure 13. ISO7637-2 pulse 2a: Vs = +112 V with 12 V

battery

10 V/div

10 µs /div

10 A /div

SMA6T30CAY

SMA6T30AY

Figure 14. ISO7637-2 pulse 3a: Vs = -220 V with 12 V

battery

10 V/div

1 A /div

200 ns /div

SMA6T30CAY

SMA6T30AY

Figure 15. ISO7637-2 pulse 3b: Vs = +150 V with 12 V

battery

10 V/div

1 A /div

200 ns /div

SMA6T30CAY

SMA6T30AY

SMA6TY

Characteristics (curves)

DS6931 - Rev 5 page 6/13

2Package information

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK®

packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions

and product status are available at: www.st.com. ECOPACK® is an ST trademark.

2.1 SMA package information

Figure 16. SMA package outline

Table 3. SMA package mechanical data

Ref.

Dimensions

Millimeters Inches

Min. Max. Min. Max.

A1 1.90 2.45 0.074 0.097

A2 0.05 0.20 0.001 0.008

b 1.25 1.65 0.049 0.065

c 0.15 0.40 0.005 0.016

D 2.25 2.90 0.088 0.115

E 4.80 5.35 0.188 0.211

E1 3.95 4.60 0.155 0.182

L 0.75 1.50 0.029 0.060

SMA6TY

Package information

DS6931 - Rev 5 page 7/13

Figure 17. SMA recommended footprint in mm (inches)

1.40

(0.055)

1.40

(0.055)

2.63

(0.104)

5.43

(0.214)

1.64

(0.065)

Figure 18. SMA marking

Figure 19. Package orientation in reel Figure 20. Tape and reel orientation

Figure 21. 13'' reel dimension values Figure 22. Inner box dimension values

SMA6TY

SMA package information

DS6931 - Rev 5 page 8/13

Figure 23. Tape outline

Table 4. Tape dimension values

Ref.

Dimensions

Millimeters

Min. Typ. Max.

D0 1.40 1.50 1.60

D1 1.50

F 5.40 5.50 5.60

K0 2.26 2.36 2.46

P0 3.90 4.00 4.10

P1 3.90 4.00 4.10

P2 1.95 2.00 2.05

W 11.70 12.00 12.30

SMA6TY

SMA package information

DS6931 - Rev 5 page 9/13

3Ordering information

Figure 24. Ordering information scheme

SMA 6T XX CA

Surface mount

Peak pulse power

6 = 600 W Transil

Breakdown voltage

30 = 30 V

Types

CA = Bidirectional

A = Unidirectional

Automotive grade

SMA = SMA package

Table 5. Ordering information

Order code Marking Package Weight Base qty. Delivery mode

SMA6TxxxAY/CAYSection 3 See Table 6. Marking. SMA 0.072 g 5000 Tape and reel

SMA6TY

Ordering information

DS6931 - Rev 5 page 10/13

Table 6. Marking

Order code Marking Order code Marking

SMA6T6V7AY 6UAY SMA6T6V7CAY 6BAY

SMA6T7V6AY 6UCY SMA6T7V6CAY 6BCY

SMA6T10AY 6UDY SMA6T10CAY 6BDY

SMA6T12AY 6UEY SMA6T12CAY 6BEY

SMA6T14AY 6UFY SMA6T14CAY 6BFY

SMA6T15AY 6UGY SMA6T15CAY 6BGY

SMA6T18AY 6UHY SMA6T18CAY 6BHY

SMA6T22AY 6UJY SMA6T22CAY 6BJY

SMA6T24AY 6UKY SMA6T24CAY 6BKY

SMA6T28AY 6UMY SMA6T28CAY 6BMY

SMA6T30AY 6UNY SMA6T30CAY 6BNY

SMA6T33AY 6UOY SMA6T33CAY 6BOY

SMA6T39AY 6UQY SMA6T39CAY 6BQY

SMA6T47AY 6URY SMA6T47CAY 6BRY

SMA6T56AY 6USY SMA6T56CAY 6BSY

SMA6T68AY 6UTY SMA6T68CAY 6BTY

SMA6T82AY 6UUY SMA6T82CAY 6BUY

SMA6TY

Ordering information

DS6931 - Rev 5 page 11/13

Revision history

Table 7. Document revision history

Date Revision Changes

15-Sep-2010 1 Initial release.

18-Oct-2011 2 Deleted old Table 2. Thermal parameter. Updated Table 2 and added order codes in Table 4.

Updated Figure 5, Figure 10 and Figure 11.

27-Mar-2012 3 Added footnote on page 1.

25-Jan-2018 4 Updated Table 2. Electrical characteristics (Tamb = 25 °C, unless otherwise specified).

07-Dec-2018 5 Updated Table 5. Ordering information.

SMA6TY

DS6931 - Rev 5 page 12/13

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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

SMA6TY

DS6931 - Rev 5 page 13/13