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 ArytonPerry winding for lowest reactive components
• Mounts on chassis to utilize heat-sink effect
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
POWER RATING
P25°C
W
MIL-PRF-39009
MILITARY
RESISTANCE RANGE
± 1%
TYPE
WEIGHT
(Typical)
MOUNTED
FREE AIR
Ω
g
ENH-5
RER40
5
3
1 - 1.65k
3.3
ENH-10
RER45
10
6
1 - 2.8k
8.8
ENH-25
RER50
20
8
1 - 6.04k
16.5
ENH-50
RER55
30
10
1 - 4.99k
35
ERH-5
RER60
5
3
0.10 - 3.32k
3
ERH-10
RER65
10
6
0.10 - 5.62k
6
ERH-25
RER70
20
8
0.10 - 12.1k
13
ERH-50
RER75
30
10
0.10 - 39.2k
28
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
ERH, ENH RESISTOR CHARACTERISTICS
ppm/°C
± 100 for 0.1Ω to 0.99Ω, ± 50 for 1Ω to 19.9Ω, ± 20 for 20Ω and above
VAC
1000 for ERH-5 ERH-10 and ERH-25, 2000 for ERH-50
Short Time Overload
-
5 x rated power for 5 seconds
Maximum Working Voltage
V
(P x R)1/2
Insulation Resistance
Ω
10,000 Megohm minimum dry, 1000 Megohm minimum after moisture test
Terminal Strength
lb
5 pull for ERH-5 and ERH-10, 10 pull for ERH-25 and ERH-50
Solderability
-
Meets requirements of ANSI J-STD-002
°C
- 55/+ 250
Temperature Coefficient
Dielectric Withstanding Voltage
Operating Temperature Range
ORDERING INFORMATION
RER50
MILITARY
TYPE
www.vishay.com
138
F
TOLERANCE
49R9
RESISTANCE
For technical questions, contact ww2bresistors@vishay.com
R
FAILURE
RATE
Document Number 30200
Revision 18-Oct-00
