Document Number: 30176

www.vishay.com

Revision: 18-Nov-10

2

WSLP3921, WSLP5931

Low Value (Down to 0.0003

Ω), Surface Mount

Vishay Dale

DIMENSIONS

DERATING

Note

• Embossed Carrier Tape per EIA-481.

MODEL

DIMENSIONS in inches (millimeters)

SOLDER PAD DIMENSIONS in inches (millimeters)

LW

H

T

d

b

l

WSLP3921

0.394 ± 0.010

(10.0 ± 0.254)

0.205 ± 0.010

(5.20 ± 0.254)

0.020

(0.5)

0.080 ± 0.010

(2.00 ± 0.254)

0.106 ± 0.010

(2.70 ± 0.254)

0.244 ± 0.010

(6.20 ± 0.254)

0.220 ± 0.005

(5.60 ± 0.13)

WSLP5931

0.591 ± 0.010

(15.0 ± 0.254)

0.305 ± 0.010

(7.75 ± 0.254)

0.020

(0.5)

0.157 ± 0.010

(4.00 ± 0.254)

0.205 ± 0.010

(5.20 ± 0.254)

0.344 ± 0.010

(8.75 ± 0.254)

0.220 ± 0.005

(5.60 ± 0.13)

H

L

T

W

D

I

d

b

GLOBAL

MODEL

RESISTANCE

VALUE

(m

Ω)

“D”

THICKNESS

(inches)

ELEMENT

MATERIAL

WSLP3921

0.5

0.0300

Mn-Cu

WSLP3921

1.0

0.0150

Mn-Cu

WSLP3921

2.0

0.0270

Fe-Cr

WSLP3921

3.0

0.0170

Fe-Cr

WSLP3921

4.0

0.0130

Fe-Cr

WSLP5931

0.3

0.0300

Mn-Cu

WSLP5931

0.5

0.0180

Mn-Cu

WSLP5931

1.0

0.0330

Fe-Cr

WSLP5931

2.0

0.0155

Fe-Cr

WSLP5931

3.0

0.0105

Fe-Cr

70

120

100

80

60

40

20

0

170

150

125

100

75

50

25

0

- 25

- 50

- 65

Ambient Temperature in °C

PERFORMANCE

TEST

CONDITIONS OF TEST

TEST LIMITS

Thermal shock

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

± 0.5 %

ΔR

Short time overload

5 x rated power for 5 s

± 0.5 %

ΔR

Low temperature operation

- 65 °C for 45 min

± 0.5 %

ΔR

High temperature storage

1000 h at + 170 °C

± 1.0 %

ΔR

Bias humidity

+ 85 °C, 85 % RH, 10 % bias, 1000 h

± 0.5 %

ΔR

Mechanical shock

100 g’s for 6 ms, 5 pulses

± 0.5 %

ΔR

Vibration

Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h

± 0.5 %

ΔR

Load life at 70 °C

1000 h, 1.5 h “ON”, 0.5 h “OFF”

± 1.0 %

ΔR

Resistance to solder heat

260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence

± 0.5 %

ΔR

Moisture resistance

MIL-STD-202, method 106, 0 % power, 7b not required

± 1.0 %

ΔR

PACKAGING

MODEL

REEL

TAPE WIDTH

DIAMETER

PIECES/REEL

CODE

WSLP3921

16 mm/embossed plastic

330 mm/13"

3000

EA

WSLP5931

24 mm/embossed plastic

330 mm/13"

1500

EA