C&H Technology SR - Manual (Page 3)

Document Number: 31067 For technical questions, contact: [email protected] www.vishay.com
Revision: 27-Nov-06 2
SR
Wirewound Resistors, Open Air,
Current Sense, Low Value
Vishay Dale
DIMENSIONS in inches [millimeters]
MATERIAL SPECIFICATIONS
Element: Nickel-chrome or copper-nickel alloy depending
on resistance value
Terminals: Tinned Copper
Encapsulation: None
Marking: None
E
F
A
C
B
MODEL DIMENSIONS in inches [millimeters]
A B C E F
SR5 0.800 + 0.040/- 0.020
[20.32 + 1.020/- 0.508]
1.0 Maximum
[25.4 Maximum]
0.125 ± 0.030
[3.18 ± 0.762] 0.065 + 0.010/- 0.005
[1.65 + 0.254/- 0.127] 0.040 ± 0.002
[1.02 ± 0.051]
Derating
- 65 - 25 25 75 125 175 225 275
Ambient Temperature °C
0
20
40
60
80
100
120
70
Rated Power in
%
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) Δ
R
Low Temperature Storage - 65 °C for 24 hours ± (0.5 % + 0.0005 Ω) Δ
R
High Temperature Exposure 1000 hours at + 275 °C ± (2.0 % + 0.0005
Ω) Δ
R
Bias Humidity + 85 °C, 85 % RH, 10 % Bias, 1000 hours ± (1.0 % + 0.0005
Ω) Δ
R
Mechanical Shock 100 g’s for 11 milliseconds, 5 pulses ± (0.2 % + 0.0005 Ω) Δ
R
Vibration Frequency varied 10 to 2000 Hz in one minute, 3 directions, 12 hours ± (0.2 % + 0.0005
Ω) Δ
R
Load Life 1000 hours at rated power, + 70 °C, 1.5 hours “ON”, 0.5 hours “OFF” ± (2.0 % + 0.0005
Ω) Δ
R
Resistance to Solder Heat + 260 °C Solder, 10 -12 second dwell, 25 mm/second emergence ± (0.5 % + 0.0005 Ω) Δ
R
Moisture Resistance MIL-STD-202 Method 106, 0 % power, 7a and 7b not required ± (0.5 % + 0.0005 Ω) Δ
R