ERH Datasheet, PDF (2/3 Pages) Vishay Siliconix – Wirewound Resistors, Military/Established Reliability MIL-PRF-39009 Qualified, Type RER, R Level

Wirewound Resistors, Military/Established Reliability
MIL-PRF-39009 Qualified, Type RER, R Level
ERH, ENH
Vishay Dale
DIMENSIONS
B
D
C
A
F
M
N
E
HG
J
P
K
L
MODEL
ERH-5
ENH-5
ERH-10
ENH-10
ERH-25
ENH-25
ERH-50
ENH-50
A
0.444
± 0.005
[11.280
± 0.127]
0.562
± 0.005
[14.270
± 0.127]
0.719
± 0.005
[18.260
± 0.127]
1.562
± 0.005
[39.670
± 0.127]
B
C
0.490 0.600
± 0.005 ± 0.031
[12.450 [15.240
± 0.127] ± 0.787]
0.625 0.750
± 0.005 ± 0.031
[15.880 [19.050
± 0.127] ± 0.787]
0.781 1.062
± 0.005 ± 0.031
[19.840 [26.970
± 0.127] ± 0.787]
0.844 1.968
± 0.005 ± 0.031
[21.440 [49.990
± 0.127] ± 0.787]
D
1.125
± 0.062
[28.580
± 1.570]
1.375
± 0.062
[34.930
± 1.570]
1.938
± 0.062
[49.230
± 1.570]
2.781
± 0.062
[70.640
± 1.570]
DIMENSIONS in inches [millimeters]
E
F
G
H
J
K
0.334 0.646 0.320 0.065 0.133 0.078
± 0.015 ± 0.015 ± 0.015 ± 0.010 ± 0.010 ± 0.010
[8.480 [16.410 [8.130 [1.650 [3.380 [1.980
± 0.381] ± 0.381] ± 0.381] ± 0.254] ± 0.254] ± 0.254]
0.420 0.800 0.390 0.075 0.165 0.093
± 0.015 ± 0.015 ± 0.015 ± 0.010 ± 0.010 ± 0.010
[10.670 [20.320 [9.910 [1.900 [4.190 [2.360
± 0.381] ± 0.381] ± 0.381] ± 0.254] ± 0.254] ± 0.254]
0.550 1.080 0.546 0.075 0.231 0.172
± 0.015 ± 0.015 ± 0.015 ± 0.010 ± 0.010 ± 0.010
[13.970 [27.430 [13.870 [1.900 [5.870 [4.370
± 0.381] ± 0.381] ± 0.381] ± 0.254] ± 0.254] ± 0.254]
0.630 1.140 0.610 0.088 0.260 0.196
± 0.015 ± 0.015 ± 0.015 ± 0.010 ± 0.010 ± 0.010
[16.000 [28.960 [15.490 [2.240 [6.600 [4.980
± 0.381] ± 0.381] ± 0.381] ± 0.254] ± 0.254] ± 0.254]
L
0.093
± 0.005
[2.360
± 0.127]
0.094
± 0.005
[2.390
± 0.127]
0.125
± 0.005
[3.180
± 0.127]
0.125
± 0.005
[3.180
± 0.127]
M
0.078
± 0.015
[1.980
± 0.381]
0.102
± 0.015
[2.590
± 0.381]
0.115
± 0.015
[2.920
± 0.381]
0.107
± 0.015
[2.720
± 0.381]
N
0.050
± 0.005
[1.270
± 0.127]
0.085
± 0.005
[2.160
± 0.127]
0.085
± 0.005
[2.160
± 0.127]
0.085
± 0.005
[2.160
± 0.127]
P
0.266
± 0.062
[6.760
± 1.570]
0.312
± 0.062
[7.920
± 1.570]
0.438
± 0.062
[11.130
± 1.570]
0.438
± 0.062
[11.130
± 1.570]
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core: Ceramic, steatite or alumina, depending on physical
size
Encapsulant: Silicone molded construction
Housing: Aluminum with hard anodic coating
End Caps: Stainless steel
Standard Terminals: Tinned Copperweld^®
Part Marking: Source code, JAN, military PIN, date/lot code
POWER RATING
Vishay ERH and ENH resistor wattage ratings are based on
mounting to the proper heat sink.
ERH-5 and ERH-10: 4" x 6" x 2" x 0.040" thick aluminum
chassis
ERH-25 and ERH-50: 5" x 7" x 2" x 0.040" thick aluminum
chassis
120
100
80
60
40
20
0
- 55 - 50 0
Derating
50
25
100
150
200
250
AMBIENT TEMPERATURE IN °C
APPLICABLE MIL SPECIFICATION
MIL-PRF-39009: This is the military specification covering
housed chassis mount established reliability power
wirewound resistors. Vishay ERH and ENH resistors are
listed as qualified on the MIL-PRF-39009 QPL.
PERFORMANCE
TEST
Low Temperature Operation
Short Time Overload
Dielectric Withstanding Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Extended Life
Terminal Strength
CONDITIONS OF TEST
Apply rated power until thermal stability, remove power subject to air
temperature of - 55 °C for 15 to 30 min
5 x rated power for 5 s
1000 V_rms (RER 40, 45, 50, 60, 65, 70), 2000 V_rms (RER55 and 75),
1 min duration
- 55 °C for 24 h
250 °C for 2000 h
MIL-STD-202, Method 106
MIL-STD-202, Method 213, condition 1
MIL-STD-202, Method 204, condition D
2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
10 000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
MIL-STD-202, Method 211, condition A
5 pound (RER40, 45, 60, 65), 10 pound (RER50, 55, 70, 75)
TEST LIMITS
± (0.5 % + 0.01 Ω) ΔR
± (0.3 % + 0.01 Ω) ΔR
± (0.2 % + 0.01 Ω) ΔR
± (0.3 % + 0.01 Ω) ΔR
± (1.0 % + 0.01 Ω) ΔR
± (0.5 % + 0.01 Ω) ΔR
± (0.2 % + 0.01 Ω) ΔR
± (0.2 % + 0.01 Ω) ΔR
± (1.0 % + 0.01 Ω) ΔR
± (2.0 % + 0.01 Ω) ΔR
± (0.2 % + 0.01 Ω) ΔR
Document Number: 30200
Revision: 29-May-08
For technical questions, contact: [e-mail]
www.vishay.com
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