CRM1206-FX-1211ELF - Bourns

Features

■ Thick ﬁ lm technology

■ Power rating of 0.25, 0.5 or 1 watt at 70 °C

■ Low resistance values available

■ RoHS compliant*

Applications

■ Current sensing

■ Power supplies

■ Stepper motor drives

■ Snubber resistor for ﬂ yback power supplies

CRM0805/1206/2010 High Power Current Sense Chip Resistors

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Speciﬁ cations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speciﬁ c applications.

General Information

Bourns® CRM Series are thick ﬁ lm chip

resistors with high power ratings making

them suitable for different applications in

power supply circuits including current

sensing and current limiting.

DIMENSIONS: MM

(INCHES)

Electrical Characteristics

Characteristic Model Model Model

CRM0805 CRM1206 CRM2010

Power Rating @ 70 °C 0.25 W 0.5 W 1 W

Operating Temperature Range -55 °C to +155 °C

Derated to Zero Load at +155 °C

Maximum Working Voltage

47 mohms to 910 mohms 551 mV 675 mV 954 mV

1 ohm to 1 megohm 150 V 200 V 200 V

Insulation Resistance >1000 megohms

Resistance Range 47 mohms to 910 mohms (±1 % and ±5 %, E24 Series)

1 ohm to 1 megohm (±1 %, E96 & E24 Series)

0 ohm, 1 ohm to 1 megohm (±5 %, E24 Series)

Resistance Tolerance ±1 %, ±5 %

Temperature Coefﬁ cient

47 mohms to 91 mohms

(±1 % and ±5 %, E24 Series) ±100 ppm ±100 ppm ±100 ppm

100 mohms to 910 mohms

(±1 % and ±5 %, E24 Series) ±100 ppm ±100 ppm ±100 ppm

1 ohm to 1 megohm

(±1 %, E96 & E24 Series) ±100 ppm (1) ±100 ppm ±100 ppm

1 ohm to 1 megohm

(±5 %, E24 Series) ±200 ppm ±200 ppm ±200 ppm

Zero Ohm Jumper <0.02 ohm (2)

Maximum Rated Current 4 A 4 A 6 A

Characteristic Data

Test ΔR Max.

Load Life (1000 hours)

Rated Voltage @ 70 °C

(1.5 hrs. on, 0.5 hrs. off)

1 % Tolerance < 1 %

5 % Tolerance < 3 %

Short Term Overload

(5 X Rated Power for 5 sec.)

1 % Tolerance < 1 %

5 % Tolerance < 2 %

Thermal Shock

(5 Cycles: -55 °C/30 min.;

+25 °C/2-3 min.; +155 °C/

30 min.; +25 °C/2-3 min.)

1 % Tolerance < 0.5 %

5 % Tolerance < 1 %

SENSING TRACE

Cu TRACE

*RoHS COMPLIANT

Product Dimensions

Recommended Solder Pad Layout

Model A B L

CRM0805 1.3 1.15 1.2

(0.051) (0.045) (0.047)

CRM1206 1.8 1.3 2.1

(0.071) (0.051) (0.083)

CRM2010 3.0 1.5 3.8

(0.118) (0.059) (0.149)

Model L W C D T

CRM0805 2.00 ± 0.15 1.20 ± 0.15 0.40 ± 0.20 0.40 ± 0.20 0.50 ± 0.10

(0.079 ± 0.006) (0.047 ± 0.006) (0.016 ± 0.008) (0.016 ± 0.008) (0.020 ± 0.04)

CRM1206 3.10 ± 0.15 1.60 ± 0.15 0.50 ± 0.25 0.50 ± 0.25 0.55 ± 0.10

(0.122 ± 0.006) (0.063 ± 0.006) (0.020 ± 0.010) (0.020 ± 0.010) (0.022 ± 0.004)

CRM2010 5.00 ± 0.20 2.50 ± 0.20 0.60 ± 0.25 0.60 ± 0.25 0.60 ± 0.10

(0.197 ± 0.008) (0.098 ± 0.008) (0.024 ± 0.010) (0.024 ± 0.010) (0.024 ± 0.004)

Exceptions:

(1) ±1 %, 1 ohm to 9.76 ohms: ±150 ppm (CRM0805)

(2) Jumper (0 ohms): Temperature coefﬁ cient is not applicable. For Standard Values Used in Capacitors,

Inductors and Resistors, click here.

Speciﬁ cations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speciﬁ c applications.

CRM0805/1206/2010 High Power Current Sense Chip Resistors

Soldering Proﬁ le

125

175

225

275

0 50 100 150 200 250 300

Time (seconds)

Temperature (°C)

60 - 120 seconds

90 - 150

seconds

260 °C peak

190 °C

150 °C

220 °C

Ramp Down

6 °C/second

255 °C

Maximum of 20 seconds between

+255 °C and +260 °C

Ramp Up

3 °C/second maximum

10 seconds minimum

<1>

Pulse Load Characteristics

PULSE DURATION (SEC.)

0.0001 0.001 0.01 0.1 1

1000

100

0.1

CRM0805

CRM1206

CRM2010

PEAK POWER (WATTS)

Derating Curve

Ambient Temperature (°C)

70 155

100

-55

Power Ratio (%)

Speciﬁ cations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speciﬁ c applications.

CRM0805/1206/2010 High Power Current Sense Chip Resistors

Packaging Dimensions (Conforms to EIA RS-481A)

DIMENSIONS: MM

(INCHES)

Model A B F W

CRM0805 2.40 ± 0.20 1.65 ± 0.20 3.50 ± 0.05 8.00 ± 0.30

(0.094 ± 0.008) (0.065 ± 0.008) (0.138 ± 0.002) (0.315 ± 0.012)

CRM1206 3.57 ± 0.20 2.00 ± 0.20 3.50 ± 0.05 8.00 ± 0.30

(0.141 ± 0.008) (0.079 ± 0.008) (0.138 ± 0.002) (0.315 ± 0.012)

CRM2010 5.50 ± 0.20 2.80 ± 0.20 5.50 ± 0.05 12.00 ± 0.30

(0.217 ± 0.008) (0.110 ± 0.008) (0.217 ± 0.002) (0.472 ± 0.012)

1.5 +0.1/-0

(.056 + .004/-0)

Maximum 1 mm (.040) thick

* Cumulative over 10 holes: ±0.2 mm

1.75 ± 0.1

(.059 ± .004)

4.0 ± 0.1

(.157 ± .004)

2.0 ± 0.05

(.079 ± .002)

60.0

(2.362)

MIN.

DIA.

180 +0/-3

(7.09 +0/-0.118)

13.0 ± 1.0

(0.512 ± 0.039)

DIA.

15.4 ± 2.0

(0.606 ± 0.079)

13.0 ± 1.0

(0.512 ± 0.039)

3312 - 2 mm SMD Trimming Potentiometer

REV. 05/15

How to Order

CRM 2010 - F X - R100 E LF

Model

(CRM = Precision Chip Resistor)

Size

0805 = 0805 Size

1206 = 1206 Size

2010 = 2010 Size

Resistance Tolerance

• F = ±1 % .........Use with “X” TCR code

Exceptions:

(CR0805) Use with “Z” TCR code for values from 1 ohm to 9.76 ohms

• J = ±5 % .........Use with “W” TCR code for values from 1 ohm through 1 megohm

Use with “X” TCR code for values under 1 ohm

Exceptions:

Use with “/” TCR code for 0 ohm (Jumper)

TCR (PPM/°C - See Electrical Characteristics chart)

• W = ±200 PPM/°C

• Z = ±150 PPM/°C

• X = ±100 PPM/°C

• / = Jumper

Resistance Value

• 1 % or 5 % Tolerance:

R <1 ohm ..............“R” represents decimal point followed by three signiﬁ cant digits (example: R100 = 0.100 ohm)

• 1% Tolerance:

<100 ohms ...........“R” represents decimal point (example: 24R3 = 24.3 ohms)

≥100 ohms ...........First three digits are signiﬁ cant, fourth digit represents number of zeros to follow (example: 8252 = 82.5K ohms)

• 5% Tolerance:

<10 ohms .............“R” represents decimal point (example: 4R7 = 4.7 ohms)

≥10 ohms .............First two digits are signiﬁ cant, third digit represents number of zeros to follow (example: 474 = 470K ohms)

0 ohm Jumper ......“000”

Packaging

• E = 5,000 pieces on 180 mm (7 inch) reel - CRM0805, CRM1206

4,000 pieces on 180 mm (7 inch) reel - CRM2010

Termination

• LF = Tin-plated (RoHS Compliant)

Speciﬁ cations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speciﬁ c applications.

CRM0805/1206/2010 High Power Current Sense Chip Resistors

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

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