WSC, WSN
Vishay Dale
Wirewound Resistors,
Precision Power, Surface Mount
FEATURES
• All welded construction
• Molded encapsulation
• Wrap around terminations
• SnPb electro tin plated terminations
• Excellent stability at different environmental conditions
• High power ratings
• Superior surge capability
• Available in non-inductive styles with Aryton-Perry winding
(WSN in lieu of WSC, maximum resistance is one-half
WSC range)
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
SIZE
INCH
WSC-1/2
WSC-1
WSC2515
WSC-2
WSC4527
WSC6927
2012
2515
2515
4527
4527
6927
POWER RATING
P
70
°
C
W
0.5
1.0
1.0
2.0
2.0
3.0
TOLERANCE
RESISTANCE
RANGE
ENCAPSULATION
±
%
0.5, 1, 5
0.5, 1, 5
0.5, 1, 5
0.5, 1, 5
0.5, 1, 5
0.5, 1, 5
Ω
0.1 - 4.99
0.1 - 2.77k
0.1 - 2.77k
0.1 - 4.92k
0.1 - 4.92k
0.1 - 8k
Epoxy
Epoxy
Thermoplastic
Epoxy
Thermoplastic
Thermoplastic
• Part Marking: 1/2W - DALE, Value; 1W - Model, Value, Tolerance, Date Code; 2W & 3W - DALE, Model, Value, Tolerance, Date Code.
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature
Coefficient
UNIT
ppm/˚C
WSC-1/2
0.1Ω - 0.99Ω =
±
90
1.0Ω - 4.99Ω =
±
50
WSC-1
WSC2515
WSC-2
WSC4527/WSC6927
0.1Ω - 0.3Ω =
±
150
0.31Ω - 0.99Ω =
±
90
1.0Ω - 9.9Ω =
±
50
10Ω and above =
±
20
> 500
> 10
9
- 65/ + 275
(P x R)
1/2
760 / 1675
0.1Ω - 0.99Ω =
±
90
0.1Ω - 0.99Ω =
±
90
0.1Ω - 0.99Ω =
±
90
1.0Ω - 26.5Ω =
±
50
1.0Ω - 26.5Ω =
±
50
1.0Ω - 9.9Ω =
±
50
26.51Ω and above =
±
20 26.51Ω and above =
±
20 10.0Ω and above =
±
20
> 500
> 10
9
- 65/ + 175
(P x R)
1/2
165
> 500
> 10
9
- 65/ + 275
(P x R)
1/2
165
> 500
> 10
9
- 65/ + 175
(P x R)
1/2
760
Dielectric Withstanding
Voltage
Insulation Resistance
Operating Temperature
Range
Maximum Working Voltage
Weight/1000 pieces (typical)
V
AC
Ω
°C
V
g
> 500
> 10
9
- 65/ + 175
(P x R)
1/2
90
ORDERING INFORMATION
WSC2515
MODEL
10
Ω
RESISTANCE
Ω
1.0%
TOLERANCE
±
%
R86
PACKAGING
B43 = Bulk Pack
R86 = Tape and Reel
www.vishay.com
106
For technical questions, contact ww2aresistors@vishay.com
Document Number 30102
Revision 06-Sep-01
WSC, WSN
Wirewound Resistors, Precision Power, Surface Mount
DIMENSIONS
W
MODEL
L
WSC-1/2
H
WSC-1
WSC2515
WSC-2
T
L
WSC4527
l
b
WSC6927
Vishay Dale
W
W
1
DIMENSIONS
in inches [millimeters]
H
T
0.200
±
0.020 0.096
±
0.015 0.040
±
0.010 0.125
±
0.005 0.050
±
0.010
[5.08
±
0.508] [2.44
±
0.381] [1.02
±
0.254] [3.18
±
0.127] [1.27
±
0.254]
0.250
±
0.020
[6.35
±
0.508]
0.250
±
0.020
[6.35
±
0.508]
0.445
±
0.032
[11.30
±
0.813]
0.455
±
0.020
[11.56
±
0.508]
0.690
±
0.032
[17.53
±
0.813]
0.110
±
0.015
[2.79
±
0.381]
0.110
±
0.015
[2.79
±
0.381]
0.162
±
0.015
[4.11
±
0.381]
0.167
±
0.010
[4.24
±
0.254]
0.280
±
0.015
[7.11
±
0.381]
0.045
±
0.010
[1.14
±
0.254]
0.045
±
0.010
[1.14
±
0.254]
0.100
±
0.010
[2.54
±
0.254]
0.100
±
0.010
[2.54
±
0.254]
0.100
±
0.010
[2.54
±
0.254]
0.150
±
0.005
[3.81
±
0.127]
0.150
±
0.005
[3.81
±
0.127]
0.275
±
0.005
[6.98
±
0.127]
0.275
±
0.005
[6.98
±
0.127]
0.275
±
0.005
[6.98
±
0.127]
0.098
±
0.005
[2.49
±
0.127]
0.098
±0
.005
[2.49
±
0.127]
0.215
±
0.005
[5.46
±
0.127]
0.215
±
0.005
[5.46
±
0.127]
0.215
±
0.015
[5.46
±
0.381]
W
1
a
MODEL
WSC-1/2
WSC-1
WSC2515
WSC-2
WSC4527
WSC6927
SOLDER PAD DIMENSIONS
in inches [millimeters]
a
b
l
0.085 [2.16]
0.070 [1.78]
0.080 [2.03]
0.090 [2.29]
0.115 [2.92]
0.120 [3.05]
0.090 [2.29]
0.115 [2.92]
0.120 [3.05]
0.155 [3.94]
0.230 [5.84]
0.205 [5.21]
0.155 [3.94]
0.230 [5.84]
0.205 [5.21]
0.155 [3.94]
0.235 [5.97]
0.470 [11.94]
Temperature Rise in
°
C
150
WSC-2
WSC4527
WSC-1/2
WSC-1
WSC2515
WSC6927
Rated Power in %
200
120
100
80
60
40
WSC2515
WSC4527
WSC6927
100
50
20
0
0
0.5
1.0
1.5
2.0
2.5
3.0
Power in W
0
WSC-1/2
WSC-1
WSC-2
-65
-25
25
75
70
125
175
225
275
Ambient Temperature in
°
C
Temperature Rise
Derating
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Low Temperature Storage
High Temperature Exposure
Bias Humidity
Mechanical Shock
Vibration
Load Life
Resistance to Solder Heat
CONDITIONS OF TEST
- 55°C to + 150°C, 1000 cycles, 15 minutes at each extreme
5 x rated power for 5 seconds
- 65°C for 24 hours
1000 hours at + 275°C (+ 175°C for WSC-1/2, WSC-1 and WSC-2)
+ 85°C, 85% RH, 10% Bias, 1000 hours
100g’s for 11 milliseconds, 5 pulses
Frequency varied 10 to 500Hz in one minute, 3 directions, 9 hours
1000 hours at rated power, + 70°C, 1.5 hours “ON”, 0.5 hours “OFF”
+ 260°C Solder, 10 -12 second dwell, 25mm/second emergence
TEST LIMITS
±
(0.5% + 0.05Ω)
∆R
±
(0.2% + 0.05Ω)
∆R
±
(0.2% + 0.05Ω)
∆R
±
(0.5% + 0.05Ω)
∆R
±
(0.2% + 0.05Ω)
∆R
±
(0.1% + 0.05Ω)
∆R
±
(0.1% + 0.05Ω)
∆R
±
(1.0% + 0.05Ω)
∆R
±
(0.5% + 0.05Ω)
∆R
PACKAGING
MODEL
TAPE WIDTH
WSC-1/2
WSC-1/WSC2515
WSC-2/WSC4527
WSC6927
12mm/Embossed Plastic
16mm/Embossed Plastic
24mm/Embossed Plastic
32mm/Embossed Plastic
DIAMETER
330mm/13"
330mm/13"
330mm/13"
330mm/13”
REEL
PIECES/REEL
2000
2000
1200
725
CODE
R86
R86
R86
R86
Embossed Carrier Tape per EIA-481-1, 2, 3
Document Number 30102
Revision 06-Sep-01
For technical questions, contact ww2aresistors@vishay.com
www.vishay.com
107
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