ERH, ENH
Vishay Dale
Wirewound Resistors, Military/Established Reliability
MIL-PRF-39009 Qualified, Type RER, R Level
FEATURES
•
Aluminum heat sink housing
•
Molded construction for total environmental protection
•
Qualified to MIL-PRF-39009
•
Complete welded construction
•
Available in non-inductive styles (type ENH) with Aryton-
Perry winding for lowest reactive components
•
Mounts on chassis to utilize heat-sink effect
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
MIL-PRF-39009
TYPE
RER40
RER45
RER50
RER55
RER60
RER65
RER70
RER75
5
10
20
30
5
10
20
30
POWER RATING
P
25 °C
W
MOUNTED
ENH-5
ENH-10
ENH-25
ENH-50
ERH-5
ERH-10
ERH-25
ERH-50
FREE AIR
3
6
8
10
3
6
8
10
MILITARY
RESISTANCE RANGE
±1%
Ω
1 - 1.65K
1 - 2.8K
1 - 6.04K
1 - 4.99K
0.10 - 3.32K
0.10 - 5.62K
0.10 - 12.1K
0.10 - 39.2K
WEIGHT
(typical)
g
3.3
8.8
16.5
35
3
6
13
28
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Dielectric Withstanding Voltage
Short Time Overload
Maximum Working Voltage
Insulation Resistance
Terminal Strength
Solderability
Operating Temperature Range
UNIT
ppm/°C
V
AC
-
V
Ω
lb
-
°C
ERH, ENH RESISTOR CHARACTERISTICS
± 100 for 0.1
Ω
to 0.99
Ω,
± 50 for 1
Ω
to 19.9
Ω,
± 20 for 20
Ω
and above
1000 for ERH-5, ERH-10 and ERH-25, 2000 for ERH-50
5 x rated power for 5 s
(P x
R)
1/2
10 000 MΩ minimum dry, 1000 MΩ minimum after moisture test
5 pull for ERH-5 and ERH-10, 10 pull for ERH-25 and ERH-50
Meets requirements of ANSI J-STD-002
- 55 to + 250
GLOBAL PART NUMBER INFORMATION
Global/Military Part Numbering: RER65F1001RC02
R
MIL TYPE
RER40
RER45
RER50
RER55
RER60
RER65
RER70
RER75
www.vishay.com
160
E
R
6
5
F
1
0
0
1
R
C
0
2
PACKAGING CODE
C02
= Tin/lead,
card pack
CSL
= Tin/lead, card pack,
single lot date code
TOLERANCE CODE
F
= ± 1.0 %
RESISTANCE VALUE
3 digit significant figure,
followed by a multiplier
49R9
= 49.9
Ω
1000
= 100
Ω
1001
= 1000
Ω
FAILURE RATE
M
= 1.0 %/1000 h
P
= 0.1 %/1000 h
R
= 0.01 %/1000 h
For technical questions, contact: ww2bresistors@vishay.com
Document Number: 30200
Revision: 29-May-08
ERH, ENH
Wirewound Resistors, Military/Established Reliability
MIL-PRF-39009 Qualified, Type RER, R Level
DIMENSIONS
D
C
A
F
M
N
E
H
J
P
K
L
G
Vishay Dale
B
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
0.490
± 0.005
[12.450
± 0.127]
0.625
± 0.005
[15.880
± 0.127]
0.781
± 0.005
[19.840
± 0.127]
0.844
± 0.005
[21.440
± 0.127]
C
0.600
± 0.031
[15.240
± 0.787]
0.750
± 0.031
[19.050
± 0.787]
1.062
± 0.031
[26.970
± 0.787]
1.968
± 0.031
[49.990
± 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]
E
0.334
± 0.015
[8.480
± 0.381]
0.420
± 0.015
[10.670
± 0.381]
0.550
± 0.015
[13.970
± 0.381]
0.630
± 0.015
[16.000
± 0.381]
DIMENSIONS
in inches [millimeters]
F
G
H
J
0.133
0.065
0.320
0.646
± 0.015 ± 0.015 ± 0.010 ± 0.010
[3.380
[1.650
[16.410 [8.130
± 0.381] ± 0.381] ± 0.254] ± 0.254]
0.800
0.390
0.075
0.165
± 0.015 ± 0.015 ± 0.010 ± 0.010
[20.320 [9.910
[1.900
[4.190
± 0.381] ± 0.381] ± 0.254] ± 0.254]
0.231
0.075
0.546
1.080
± 0.015 ± 0.015 ± 0.010 ± 0.010
[5.870
[27.430 [13.870 [1.900
± 0.381] ± 0.381] ± 0.254] ± 0.254]
0.260
0.088
0.610
1.140
± 0.015 ± 0.015 ± 0.010 ± 0.010
[6.600
[28.960 [15.490 [2.240
± 0.381] ± 0.381] ± 0.254] ± 0.254]
RATED POWER IN
%
120
100
80
60
40
20
0
- 55 - 50
0
K
0.078
± 0.010
[1.980
± 0.254]
0.093
± 0.010
[2.360
± 0.254]
0.172
± 0.010
[4.370
± 0.254]
0.196
± 0.010
[4.980
± 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
50
25
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
Derating
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
Document Number: 30200
Revision: 29-May-08
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)
For technical questions, contact: ww2bresistors@vishay.com
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
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Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
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Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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