WSR21L250FTA [VISHAY]

RESISTOR, CURRENT SENSE, METAL STRIP, 2 W, 1 %, 0.00125 ohm, SURFACE MOUNT, 4527, CHIP;


型号：	WSR21L250FTA
厂家：	VISHAY
描述：	RESISTOR, CURRENT SENSE, METAL STRIP, 2 W, 1 %, 0.00125 ohm, SURFACE MOUNT, 4527, CHIP 电阻器
文件：	总3页 (文件大小：94K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

WSR

Vishay Dale

Power Metal Strip^®Resistors,

Low Value (down to 0.001 Ω), Surface Mount

FEATURES

• Molded high temperature encapsulation

Pb-free

• Ideal for all types of current sensing, voltage

division and pulse applications including

switching and linear power supplies,

instruments, power amplifiers

• Proprietary processing technique produces

extremely low resistance values (down to

0.001 Ω)

Available

RoHS*

COMPLIANT

• All welded construction

• Solid metal Nickel-chrome or Manganese-copper alloy

resistive element with low TCR (< 20 ppm/°C)

• Solderable terminations

• Very low inductance 0.5 nH to 5 nH

• Excellent frequency response to 50 MHz

• Low thermal EMF (< 3 µV/ °C)

• Lead (Pb)-free version is RoHS compliant

STANDARD ELECTRICAL SPECIFICATIONS

POWER RATING

RESISTANCE RANGE

GLOBAL

MODEL

SIZE

P_{70 °C}

2.0

3.0¹⁾

0.ꢀ ꢁ

0.01 - 1.0

0.01 - 0.2

1.0 ꢁ

WSR2

WSR3

4527

0.001 - 1.0

0.001 - 0.2

Note

1. The WSR3 requires a minimum of 1050 sq. mil. circuit traces connecting to the recommended solder pad

• Part Marking: DALE, Model, Value, Tolerance, Date Code

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

WSR2 & WSR3

0.005 Ω - 0.0099 Ω = 110

0.010 Ω - 1.0 Ω = 75

Temperature Coefficient

ppm/°C

Dielectric Withstanding Voltage

Insulation Resistance

V_AC

> 500

> 10⁹

Operating Temperature Range

Maximum Working Voltage

Weight/1000 pieces (typical)

°C

- 65/+ 275

(P x R)^1/2

440

GLOBAL PART NUMBER INFORMATION

New Global Part Numbering: WSR2ꢀL000FTA (preferred part numbering format)

ꢀ

GLOBAL MODEL

WSR2

VALUE

L = Milliohm*

R = Decimal

ꢀL000 = 0.005 Ω

R0100 = 0.01 Ω

TOLERANCE

D = 0.5 %

F = 1.0 %

J = 5.0 %

PACKAGING

SPECIAL

EA = Lead (Pb)-free, Tape/Reel

EK = Lead (Pb)-free, Bulk

TA = Tin/Lead, Tape/Reel (R86)

BA = Tin/Lead, Bulk (B43)

(Dash Number)

(up to 2 digits)

From 1 - 99 as

applicable

WSR3

* use “L” for resistance

values < 0.01 Ω

Historical Part Number example: WSR2 0.00ꢀ Ω 1 % R86 (will continue to be accepted)

WSR2

0.00ꢀ Ω

1 %

R86

HISTORICAL MODEL

RESISTANCE VALUE

TOLERANCE CODE

PACKAGING

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

www.vishay.com

For technical questions, contact: ww2bresistors@vishay.com

Document Number: 30101

Revision: 26-Mar-07

WSR

Vishay Dale

Power Metal Strip^®Resistors,

Low Value (down to 0.001 Ω), Surface Mount

DIMENSIONS

DIMENSIONS in inches [millimeters]

MODEL

W₁

WSR2

WSR3

0.455 0.032 0.095 0.005 0.100 0.010 0.275 0.005 0.215 0.005

[11.56 0.813] [2.41 0.127] [2.54 0.254] [6.98 0.127] [5.46 0.127]

SOLDER PAD DIMENSIONS in inches [millimeters]

MODEL

WSR2

WSR3

0.155

[3.94]

0.230

[5.84]

0.205

[5.21]

120

100

- 65

- 25

125

175

225

275

Ambient Temperature °C

Derating

PERFORMANCE

TEST

TEST LIMITS

CONDITIONS OF TEST

WSR2

WSR3

Thermal Shock

- 55 °C to + 150 °C, 1000 cycles, 15 minutes at each extreme

(0.5 % + 0.0005

)

(0.5 % + 0.0005

)

WSR2: 5 x rated power for 5 seconds

WSR3: 4 x rated power for 5 seconds

Short Time Overload

(0.5 % + 0.0005

)

(2.0 % + 0.0005

Low Temperature Storage

High Temperature Exposure

Bias Humidity

- 65 °C for 24 hours

(0.5 % + 0.0005

(1.0 % + 0.0005

(0.5 % + 0.0005

(1.0 % + 0.0005

(0.5 % + 0.0005

)

ΔR

(0.5 % + 0.0005

(1.0 % + 0.0005

(0.5 % + 0.0005

(2.0 % + 0.0005

(0.5 % + 0.0005

Ω)

1000 hours at + 275 °C

+ 85 °C, 85 % RH, 10 % Bias, 1000 hours

Ω)

Mechanical Shock

Vibration

100 g’s for 6 milliseconds, 5 pulses

Ω)

Frequency varied 10 to 2000 Hz in one minute, 3 directions, 12 hours

1000 hours at rated power, + 70 °C, 1.5 hours “ON”, 0.5 hours “OFF”

+ 260 °C Solder, 10 - 12 second dwell, 25 mm/second emergence

MIL-STD-202 Method 106, 0 % power, 7a and 7b not required

Ω)

Load Life

Ω)

Resistance to Solder Heat

Moisture Resistance

PACKAGING

MODEL

REEL

TAPE WIDTH

DIAMETER

PIECES/REEL

1500

CODE

WSR2 & WSR3

24 mm/Embossed Plastic

330 mm/13"

Note

• Embossed Carrier Tape per EIA-481-2

Document Number: 30101

Revision: 26-Mar-07

For technical questions, contact: ww2bresistors@vishay.com

www.vishay.com

Legal Disclaimer Notice

Vishay

Notice

Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,

or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.

Information contained herein is intended to provide a product description only. No license, express or implied, by

estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's

terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express

or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness

for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.

Customers using or selling these products for use in such applications do so at their own risk and agree to fully

indemnify Vishay for any damages resulting from such improper use or sale.

Document Number: 91000

Revision: 08-Apr-05

www.vishay.com

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