www.vishay.com For technical questions, contact: ww2aresistors@vishay.com Document Number: 30102
310 Revision: 03-Aug-07
WSC, WSN
Vishay Dale
Wirewound Resistors,
Precision Power, Surface Mount
FEATURES
All welded construction
Molded encapsulation
Wraparound terminations
Excellent stability at different environmental
conditions
High power ratings (up to 3 W)
Superior surge capability
Available in non-inductive styles with Aryton-
Perry winding (WSN in lieu of WSC, maximum
resistance is one-half WSC range)
Note
Part Marking: 1/2 W - DALE, Value; 1 W - Model, Value, Tolerance, Date Code; 2 W & 3 W - DALE, Model, Value, Tolerance, Date Code
1) 0.1 % and 0.25 % is available on the WSC2515 for 0.499 Ω to 2.5 kΩ range.
Note
2) WSC2515 only
* Pb containing terminations are not RoHS compliant, exemptions may apply
Available
Pb-free
RoHS*
COMPLIANT
e3
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
HISTORICAL
MODEL
SIZE
INCH
POWER RATING P70 °C
W
TOLERANCE
± %
RESISTANCE RANGE
Ω
ENCAPSULATION
WSC01/2 WSC-1/2 2012 0.5 0.5, 1, 5 0.1 - 4.99 Epoxy
WSC0001 WSC-1 2515 1.0 0.5, 1, 5 0.1 - 2.77K Epoxy
WSC2515 WSC2515 2515 1.0 0.5, 1, 5 1) 0.1 - 2.77K Thermoplastic
WSC0002 WSC-2 4527 2.0 0.5, 1, 5 0.1 - 4.92K Epoxy
WSC4527 WSC4527 4527 2.0 0.5, 1, 5 0.1 - 4.92K Thermoplastic
WSC6927 WSC6927 6927 3.0 0.5, 1, 5 0.1 - 8K Thermoplastic
TECHNICAL SPECIFICATIONS
PARAMETER UNIT WSC01/2 WSC0001 WSC2515 WSC0002
WSC4527/WSC6927
Temperature
Coefficient
ppm/°C 0.1 Ω - 0.99 Ω = ± 90
1.0 Ω - 4.99 Ω = ± 50
0.1 Ω - 0.99 Ω = ± 90
1.0 Ω - 26.5 Ω = ± 50
26.51 Ω and above = ± 20
0.1 Ω - 0.3 Ω = ± 150
0.31 Ω - 0.99 Ω = ± 90
1.0 Ω - 26.5 Ω = ± 50
26.51 Ω and above = ± 20
0.1 Ω - 0.99 Ω = ± 90
1.0 Ω - 9.9 Ω = ± 50
10.0 Ω and above = ± 20
0.1 Ω - 0.3 Ω = ± 150
0.31 Ω - 0.99 Ω = ± 90
1.0 Ω - 9.9 Ω = ± 50
10 Ω and above = ± 20
Dielectric
Withstanding Voltage
VAC > 500 > 500 > 500 > 500 > 500
Insulation Resistance
Ω> 109> 109> 109> 109> 109
Operating
Temperature Range
°C - 65/+ 175 - 65/+ 175 - 65/+ 275 - 65/+ 175 - 65/+ 275
Maximum Working
Voltage
V(P x R)1/2 (P x R)1/2 (P x R)1/2 (P x R)1/2 (P x R)1/2
Weight/1000 pieces
(typical)
g 90 165 165 760 760/1675
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: WSC2515R7000FEA (preferred part numbering format)
WSC2 5 1 5R70 00
FEA
Historical Part Number example: WSC2515 0.7 Ω 1 %R86 (will continue to be accepted)
WSC2515 0.7 Ω 1 %R86
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE PACKAGING
CODE
VALUE
R = decimal
K = thousand
54R15 = 54.15 Ω
1K500 = 1.5 kΩ
SPECIAL
(Dash Number)
(up to 2 digits)
From 1-99 as
applicable
PACKAGING
EA = Lead (Pb)-free, tape/reel
EK = Lead (Pb)-free, bulk
TA = Tin/Lead, Tape/reel (R86)
BA = Tin/Lead, bulk (B43)
GLOBAL MODEL
WSC
WSN
SIZE
01/2
0001
2515
0002
4527
6927
TOLERANCE
B = ± 0.1 %
2)
C = ± 0.25 %
2)
D = ± 0.5 %
F = ± 1.0 %
G = ± 2.0 %
H = ± 3.0 %
J = ± 5.0 %
K = ± 10 %
Document Number: 30102 For technical questions, contact: ww2aresistors@vishay.com www.vishay.com
Revision: 03-Aug-07 311
WSC, WSN
Wirewound Resistors,
Precision Power, Surface Mount Vishay Dale
DIMENSIONS
Note
Embossed Carrier Tape per EIA-481-1, 2, 3
MODEL DIMENSIONS in inches [millimeters] SOLDER PAD DIMENSIONS in inches [millimeters]
LHTWW
1ab l
WSC01/2
0.200 ± 0.020
[5.08 ± 0.508]
0.096 ± 0.015
[2.44 ± 0.381]
0.040 ± 0.010
[1.02 ± 0.254]
0.125 ± 0.005
[3.18 ± 0.127]
0.050 ± 0.010
[1.27 ± 0.254]
0.085 [2.16] 0.070 [1.78] 0.080 [2.03]
WSC0001
0.250 ± 0.020
[6.35 ± 0.508]
0.110 ± 0.015
[2.79 ± 0.381]
0.045 ± 0.010
[1.14 ± 0.254]
0.150 ± 0.005
[3.81 ± 0.127]
0.098 ± 0.005
[2.49 ± 0.127]
0.090 [2.29] 0.115 [2.92] 0.120 [3.05]
WSC2515
0.250 ± 0.020
[6.35 ± 0.508]
0.110 ± 0.015
[2.79 ± 0.381]
0.045 ± 0.010
[1.14 ± 0.254]
0.150 ± 0.005
[3.81 ± 0.127]
0.098 ± 0.005
[2.49 ± 0.127]
0.090 [2.29] 0.115 [2.92] 0.120 [3.05]
WSC0002
0.445 ± 0.032
[11.30 ± 0.813]
0.162 ± 0.015
[4.11 ± 0.381]
0.100 ± 0.010
[2.54 ± 0.254]
0.275 ± 0.005
[6.98 ± 0.127]
0.215 ± 0.005
[5.46 ± 0.127]
0.155 [3.94] 0.230 [5.84] 0.205 [5.21]
WSC4527
0.455 ± 0.020
[11.56 ± 0.508]
0.167 ± 0.010
[4.24 ± 0.254]
0.100 ± 0.010
[2.54 ± 0.254]
0.275 ± 0.005
[6.98 ± 0.127]
0.215 ± 0.005
[5.46 ± 0.127]
0.155 [3.94] 0.230 [5.84] 0.205 [5.21]
WSC6927
0.690 ± 0.032
[17.53 ± 0.813]
0.280 ± 0.015
[7.11 ± 0.381]
0.100 ± 0.010
[2.54 ± 0.254]
0.275 ± 0.005
[6.98 ± 0.127]
0.215 ± 0.015
[5.46 ± 0.381]
0.155 [3.94] 0.235 [5.97] 0.470 [11.94]
W
L
T
W1
H
l
a
b
PERFORMANCE
TEST CONDITIONS OF TEST TEST LIMITS
Thermal Shock - 55 °C to + 150 °C, 1000 cycles, 15 minutes at each extreme ± (0.5 % + 0.05 Ω)
Δ
R
Short Time Overload 5 x rated power for 5 seconds ± (0.2 % + 0.05 Ω)
Δ
R
Low Temperature Storage - 65 °C for 24 hours ± (0.2 % + 0.05 Ω)
Δ
R
High Temperature Exposure 1000 hours at + 275 °C (+ 175 °C for WSC01/2, WSC0001 and WSC0002) ± (0.5 % + 0.05 Ω)
Δ
R
Bias Humidity + 85 °C, 85 % RH, 10 % Bias, 1000 hours ± (0.2 % + 0.05 Ω)
Δ
R
Mechanical Shock 100 g’s for 11 milliseconds, 5 pulses ± (0.1 % + 0.05 Ω)
Δ
R
Vibration Frequency varied 10 to 500 Hz in one minute, 3 directions, 9 hours ± (0.1 % + 0.05 Ω)
Δ
R
Load Life 1000 hours at rated power, + 70 °C, 1.5 hours “ON”, 0.5 hours “OFF” ± (1.0 % + 0.05 Ω)
Δ
R
Resistance to Solder Heat + 260 °C Solder, 10 - 12 second dwell, 25 mm/second emergence ± (0.5 % + 0.05 Ω)
Δ
R
PACKAGING
MODEL REEL
TAPE WIDTH DIAMETER PIECES/REEL CODE
WSC01/2 12 mm/Embossed Plastic 330 mm/13" 2000 EA/TA
WSC0001/WSC2515 16 mm/Embossed Plastic 330 mm/13" 2000 EA/TA
WSC0002/WSC4527 24 mm/Embossed Plastic 330 mm/13" 1200 EA/TA
WSC6927 32 mm/Embossed Plastic 330 mm/13” 725 EA/TA
Temperature Rise
0 0.5 1.0 1.5 2.0 2.5 3.0
Power in W
200
150
100
50
0
WSC0001
WSC2515
WSC01/2
WSC6927
WSC0002
WSC4527
Temperature Rise in °C
Derating
- 65 - 25 25 75 125 175 225 275
Ambient Temperature in °C
120
100
80
60
40
20
0
70
WSC2515
WSC4527
WSC6927
WSC01/2
WSC0001
WSC0002
Rated Power in %
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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