Owner manual

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Document Number: 30200
160 Revision: 29-May-08
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
POWER RATING
P
25 °C
W
MILITARY
RESISTANCE RANGE
± 1 %
Ω
WEIGHT
(typical)
g
MOUNTED FREE AIR
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
Temperature Coefficient ppm/°C ± 100 for 0.1 Ω to 0.99 Ω, ± 50 for 1 Ω to 19.9 Ω, ± 20 for 20 Ω and above
Dielectric Withstanding Voltage V
AC
1000 for ERH-5, ERH-10 and ERH-25, 2000 for ERH-50
Short Time Overload - 5 x rated power for 5 s
Maximum Working Voltage V
(P x R)
1/2
Insulation Resistance Ω 10 000 MΩ minimum dry, 1000 MΩ 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
Operating Temperature Range °C - 55 to + 250
GLOBAL PART NUMBER INFORMATION
Global/Military Part Numbering: RER65F1001RC02
MIL TYPE TOLERANCE CODE RESISTANCE VALUE FAILURE RATE PACKAGING CODE
RER40
RER45
RER50
RER55
RER60
RER65
RER70
RER75
F = ± 1.0 % 3 digit significant figure,
followed by a multiplier
49R9 = 49.9 Ω
1000 = 100 Ω
1001 = 1000 Ω
M = 1.0 %/1000 h
P = 0.1 %/1000 h
R = 0.01 %/1000 h
C02 = Tin/lead,
card pack
CSL = Tin/lead, card pack,
single lot date code
65F1 01R0ER C02R