C&H Technology SR User Manual

6121 Baker Road,
Suite 108
Minnetonka, MN 55345

www.chtechnology.com

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Fax [phone]

1-800-274-4284

Thank you for downloading this document from C&H Technology, Inc.

Please contact the C&H Technology team for the following questions -

Technical

Application

Assembly

Availability

Pricing

Phone – 1-800-274-4284

E-Mail – [e-mail]

www.chtechnology.com - SPECIALISTS IN POWER ELECTRONIC COMPONENTS AND ASSEMBLIES - www.chtechnology.com

SR

Vishay Dale

Wirewound Resistors, Open Air,

Current Sense, Low Value

FEATURES

• Open air design

• Low resistance values for all types of current

sensing, voltage division and pulse applications
including switching and linear supplies,
instrumentation and power amplifiers

• All welded construction

• Solid metal Nickel-Chrome or Copper-Nickel

alloy resistive element

• Solderable terminations

• Very low inductance

• Lead (Pb)-free version is RoHS compliant

STANDARD ELECTRICAL SPECIFICATIONS

MODEL POWER RATING

P

70 °C

W

SR5 5.0 1, 5 0.004 - 0.05

TOLERANCE

± %

RESISTANCE RANGE

Ω

Pb-free

Available

e3

RoHS*

COMPLIANT

TECHNICAL SPECIFICATIONS

PARAMETER UNIT SR5

Temperature Coefficient ppm/°C

Operating Temperature Range °C - 65/+ 275

Maximum Continuous Current A (P/R)

Weight/1000 pieces (typical) g 1350

0.004 Ω - 0.005 Ω = ± 200

0.0051 Ω - 0.0099 Ω = ± 175

0.01 Ω - 0.05 Ω = ± 100

1/2

GLOBAL PART NUMBER INFORMATION

New Global Part Numbering: SR55L000JB14 (preferred part numbering format)

SR55L0 00 JB1 4

GLOBAL MODEL VALUE TOLERANCE SPECIAL

SR5 L = Milliohm F = ± 1.0 % (Dash Number)

Historical Part Number example: SR5 0.005 Ω 5 % B14 (will continue to be accepted)

HISTORICAL MODEL

(below 0.01 Ω ) J = ± 5.0 %

R = Decimal K = ± 10 % From 1-999 as

5L000 = 0.005 Ω applicable

R0100 = 0.01 Ω

SR5

0.005 Ω

RESISTANCE VALUE

TOLERANCE

PACKAGING

E14 = Lead (Pb)-free bulk

B14 = Tin/lead bulk (up to 3 digits)

5 %

CODE

B14

PACKAGING

* Pb containing terminations are not RoHS compliant, exemptions may apply

www.vishay.com For technical questions, contact: [e-mail]
1 Revision: 27-Nov-06

Document Number: 31067

SR

Wirewound Resistors, Open Air,

Current Sense, Low Value

DIMENSIONS in inches [millimeters]

B

C

A

MODEL DIMENSIONS in inches [millimeters]

ABCEF

SR5

0.800 + 0.040/- 0.020

[20.32 + 1.020/- 0.508]

1.0 Maximum

[25.4 Maximum]

E

F

0.125 ± 0.030
[3.18 ± 0.762]

0.065 + 0.010/- 0.005
[1.65 + 0.254/- 0.127]

Vishay Dale

0.040 ± 0.002
[1.02 ± 0.051]

MATERIAL SPECIFICATIONS

Element: Nickel-chrome or copper-nickel alloy depending
on resistance value

Terminals: Tinned Copper

Encapsulation: None

Marking: None

120

100

80

60

40

20

Rated Power in %

0

- 65 - 25 25

Derating

125 175 225 275

75

70

Ambient Temperature °C

PERFORMANCE

TEST CONDITIONS OF TEST TEST LIMITS

Temperature Cycling - 55 °C to + 125 °C, 1000 cycles, 15 minutes at each extreme ± (1.0 % + 0.0005 Ω)

Low Temperature Storage - 65 °C for 24 hours ± (0.5 % + 0.0005 Ω)

High Temperature Exposure 1000 hours at + 275 °C ± (2.0 % + 0.0005 Ω)

Bias Humidity + 85 °C, 85 % RH, 10 % Bias, 1000 hours ± (1.0 % + 0.0005 Ω)

Mechanical Shock 100 g’s for 11 milliseconds, 5 pulses ± (0.2 % + 0.0005 Ω)

Vibration Frequency varied 10 to 2000 Hz in one minute, 3 directions, 12 hours ± (0.2 % + 0.0005 Ω)

Δ

R

Δ

R

Δ

R

Δ

R

Δ

R

Δ

R

Δ

Load Life 1000 hours at rated power, + 70 °C, 1.5 hours “ON”, 0.5 hours “OFF” ± (2.0 % + 0.0005 Ω)

Resistance to Solder Heat + 260 °C Solder, 10 -12 second dwell, 25 mm/second emergence ± (0.5 % + 0.0005 Ω)

Moisture Resistance MIL-STD-202 Method 106, 0 % power, 7a and 7b not required ± (0.5 % + 0.0005 Ω)

Document Number: 31067 For technical questions, contact: [e-mail]
Revision: 27-Nov-06 2

www.vishay.com

R

Δ

R

Δ

R