CRMSERIES-LAB1 - Bourns Inc.

Features

n Thick ﬁlm technology

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

n Low resistance value available

n RoHS compliant*

Applications

n Current sensing

n Power supplies

n Stepper motor drives

n Snubber resistor for ﬂyback power supplies

CRM0805/1206/2010 High Power Current Sense Chip Resistors

General Information

Bourns® CRM Series are thick lm chip

resistors with high power ratings making

them suitable for different applications in

power supply circuits including current

sensing and current limiting.

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 Coef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 9.76 ohms

(±1 %, E96 & E24 Series) ±150 ppm/ ±100 ppm/ ±100 ppm/

±200 ppm ±200 ppm ±200 ppm

10 ohms to 1 megohm

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

1 ohm to 1 megohm

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

Zero Ohm Jumper <0.02 ohm (1)

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 %

*RoHS COMPLIANT

LEAD FREE

*RoHS COMPLIANT

VERSIONS

AVAILABLE

LEAD FREE

VERSIONS ARE

RoHS COMPLIANT*

Exceptions:

(1) Jumper (0 ohms): Temperature coefcient is not applicable.

For Standard Values Used in Capacitors,

Inductors and Resistors, click here.

R100

Pulse Load Characteristics

PULSE DURATION (SEC.)

0.0001 0.001 0.01 0.1 1

1000

100

0.1

CRM0805

CRM1206

CRM2010

PULSE DURATION (SEC.)

PEAK POWER (WATTS)

0.0001 0.001 0.01 0.1 1

1000

100

0.1

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

Speciﬁcations are subject to change without notice.

Users should verify actual device performance in their speciﬁc applications.

The products described herein and this document are subject to speciﬁc legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Speciﬁcations are subject to change without notice.

Users should verify actual device performance in their speciﬁc applications.

The products described herein and this document are subject to speciﬁc legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

CRM0805/1206/2010 High Power Current Sense Chip Resistors

DIMENSIONS: MM

(INCHES)

SENSING TRACE

Cu TRACE

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)

Product Dimensions

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)

Soldering Prole

125

175

225

275

050 100 150 200 250 300

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>

Derating Curve

Ambient Temperature (°C)

70 155

100

-55

Power Ratio (%)

Speciﬁcations are subject to change without notice.

Users should verify actual device performance in their speciﬁc applications.

The products described herein and this document are subject to speciﬁc legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

CRM0805/1206/2010 High Power Current Sense Chip Resistors

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 %

• J = ±5 %

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 signi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 signi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 signi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)

3312 - 2 mm SMD Trimming Potentiometer

REV. 09/18

Speciﬁcations are subject to change without notice.

Users should verify actual device performance in their speciﬁc applications.

The products described herein and this document are subject to speciﬁc legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

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)

3.60 ± 0.20

(0.142 ± 0.008) 2.0 ± 0.05

(0.079 ± 0.002)

4.0 ± 0.05

(0.157 ± 0.002)

4.0 ± 0.1

(0.157 ± 0.004)

1.5 +0.1/-0

(0.059 +0.004/-0) DIA. 1.5

(0.059)

DIA. MIN.

0.85 ± 0.15

(0.033 ± 0.006)

6.9 ± 0.2

(0.272 ± 0.008)

5.5 ± 0.05

(0.217 ± 0.002)

1.75 ± 0.1

(0.069 ± 0.004)

12.0 ± 0.2

(0.472 ± 0.008)

TOP TAPE

PAPER TAPE

RESISTOR

USER DIRECTION OF FEED

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)

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This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and

its aliates (collectively, “Bourns”).

Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change

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statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical

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C1753 05/17/18R