Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount
www.vishay.com For technical questions, contact: ww2bresistors@vishay.com Document Number: 30282
1Revision: 23-Feb-11
RE Military
Vishay Dale
FEATURES
• Molded construction for total environmental protection
• Complete welded construction
• Qualified to MIL-PRF-18546
• Available in non-inductive styles (type N) with
Aryton-Perry winding for lowest reactive components
• Mounts on chassis to utilize heat-sink effect
• Excellent stability in operation (< 1 % change in
resistance)
Note
• Only tolerance available for RE type is ± 1 %
STANDARD ELECTRICAL SPECIFICATIONS
MILITARY
MODEL
VISHAY
REFERENCE
MODEL
POWER RATING
P25 °C
W
RESISTANCE RANGE
TOLERANCE
± %
WEIGHT
(typical)
g
RE60G RH005 5 0.10 to 3.32K 1 3
RE60N NH005 5 1.0 to 1.65K 1 3.3
RE65G RH010 10 0.10 to 5.62K 1 6
RE65N NH010 10 1.0 to 2.8K 1 8.8
RE70G RH025 20 0.10 to 12.1K 1 13
RE70N NH025 20 1.0 to 6.04K 1 16.5
RE75G RH050 30 0.10 to 39.2K 1 28
RE75N NH050 30 1.0 to 19.6K 1 35
RE77G RH100 75 0.05 to 29.4K 1 350
RE77N NH100 75 1.0 to 14.7K 1 385
RE80G RH250 120 0.10 to 35.7K 1 630
RE80N NH250 120 1.0 to 17.4K 1 690
TECHNICAL SPECIFICATIONS
PARAMETER UNIT RE RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C ± 20 for 10 and above; ± 50 for 1 to 9.9 ; ± 100 for 0.1 to 0.99
Maximum Working Voltage V (P x R)1/2
Insulation Resistance 10 000 M minimum dry, 1000 M minimum after moisture test
Solderability - MIL-PRF-18546 type - meets requirements of ANSI J-STD-002
Operating Temperature Range °C - 55 to + 250
MILITARY PART NUMBER INFORMATION
Military Part Numbering example: RE77N1302J01
MIL TYPE CHARACTERISTIC RESISTANCE VALUE PACKAGING CODE
RE60
RE65
RE70
RE75
RE77
RE80
G = Inductive
N = Non-inductive
3 digit significant figure,
followed by a multiplier
49R9 = 49.9
1000 = 100
1001 = 1000
1302 = 13 000
C02 = Card pack
J01 = Skin pack
R E 7 7 N 1 03 2 0J 1
Document Number: 30282 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com
Revision: 23-Feb-11 2
RE Military
Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount Vishay Dale
DIMENSIONS in inches [millimeters]
DIMENSIONS in inches [millimeters]
MILITARY
MODEL
DIMENSIONS
in inches [millimeters]
ABCDEFGHJKLMNP
RE60
0.444
± 0.005
[11.28
± 0.127]
0.490
± 0.005
[12.45
± 0.127]
0.600
± 0.030
[15.24
± 0.787]
1.125
± 0.062
[28.58
± 1.57]
0.334
± 0.015
[8.48
± 0.381]
0.646
± 0.015
[16.41
± 0.381]
0.320
± 0.015
[8.13
± 0.381]
0.065
± 0.010
[1.65
± 0.254]
0.133
± 0.010
[3.38
± 0.254]
0.078
± 0.010
[1.98
± 0.254]
0.093
± 0.005
[2.36
± 0.127]
0.078
± 0.015
[1.98
± 0.381]
0.050
± 0.005
[1.27
± 0.127]
0.266
± 0.062
[6.76
± 1.57]
RE65
0.562
± 0.005
[14.27
± 0.127]
0.625
± 0.005
[15.88
± 0.127]
0.750
± 0.031
[19.05
± 0.787]
1.375
± 0.062
[34.93
± 1.57]
0.420
± 0.015
[10.67
± 0.381]
0.800
± 0.015
[20.32
± 0.381]
0.390
± 0.015
[9.91
± 0.381]
0.075
± 0.010
[1.91
± 0.254]
0.165
± 0.010
[4.19
± 0.254]
0.093
± 0.010
[2.36
± 0.254]
0.094
± 0.005
[2.39
± 0.127]
0.102
± 0.015
[2.59
± 0.381]
0.085
± 0.005
[2.16
± 0.127]
0.312
± 0.062
[7.92
± 1.57]
RE70
0.719
± 0.005
[18.26
± 0.127]
0.781
± 0.005
[19.84
± 0.127]
1.062
± 0.031
[26.97
± 0.787]
1.938
± 0.062
[49.23
± 1.57]
0.550
± 0.015
[13.97
± 0.381]
1.080
± 0.015
[27.43
± 0.381]
0.546
± 0.015
[13.87
± 0.381]
0.075
± 0.010
[1.91
± 0.254]
0.231
± 0.010
[5.87
± 0.254]
0.172
± 0.010
[4.37
± 0.254]
0.125
± 0.005
[3.18
± 0.127]
0.115
± 0.015
[2.92
± 0.381]
0.085
± 0.005
[2.16
± 0.127]
0.438
± 0.062
[11.13
± 1.57]
RE75
1.562
± 0.005
[39.67
± 0.127]
0.844
± 0.005
[21.44
± 0.127]
1.968
± 0.031
[49.99
± 0.787]
2.781
± 0.062
[70.64
± 1.57]
0.630
± 0.015
[16.00
± 0.381]
1.140
± 0.015
[28.96
± 0.381]
0.610
± 0.015
[15.49
± 0.381]
0.088
± 0.010
[2.24
± 0.254]
0.260
± 0.010
[6.60
± 0.254]
0.196
± 0.010
[4.98
± 0.254]
0.125
± 0.005
[3.18
± 0.127]
0.107
± 0.015
[2.72
± 0.381]
0.085
± 0.005
[2.16
± 0.127]
0.438
± 0.062
[11.13
± 1.57]
RE60, RE65
RE70, RE75
P
D
C
A
L
M
N
J
F
E
H
G
K
B
RE80
RE77
2.25 ± 0.010
[57.15 ± 0.254]
0.989 ± 0.031
[25.12 ± 0.787]
2.812 ± 0.031
[71.42 ± 0.787]
3.50 ± 0.031
[88.90 ± 0.787]
Nickel plated
brass nut
stainless steel stud
1.125 ± 0.031
[28.58 ± 0.787]
0.188 ± 0.010
[4.78 ± 0.254]
Dia. typ.
12 - 24
UNC-2A
Thd. typ. 2.75 ± 0.010
[69.85 ± 0.254]
0.375 ± 0.031
[9.52 ± 0.787]
5.478 ± 0.093
[139.14 ± 2.36]
1.75 ± 0.031
[44.45 ± 0.787]
55.58 ± 0.787
[2.188 ± 0.031]
2.125 ± 0.031
[53.98 ± 0.787]
0.250 ± 0.031
[6.35 ± 0.787]
typ.
4.50 ± 0.031
[114.30 ± 0.787]
2.50 ± 0.010
[63.50 ± 0.254]
7.0 ± 0.093 [177.80 ± 2.36]
0.875 ± 0.010
[22.23 ± 0.254]
3.0 ± 0.010
[76.20 ± 0.254]
3.875 ± 0.010
[98.42 ± 0.254]
0.770 ± 0.015
[19.56 ± 0.381]
0.188 ± 0.031
[4.78 ± 0.787]
typ.
1.812 ± 0.031
[46.02 ± 0.787]
0.312 ± 0.031
[7.92 ± 0.787]
1.25 ± 0.062
[31.75 ± 1.575]
1.25 ± 0.062
[31.75 ± 1.575]
1/4 - 20
UNC-2A thd. typ.
0.955 ± 0.015
[24.26 ± 0.381]
3.0 ± 0.031
[76.20 ± 0.787]
Nickel plated
brass nut
stainless steel stud
0.188 ± 0.010
[4.78 ± 0.254]
Dia. typ.
www.vishay.com For technical questions, contact: ww2bresistors@vishay.com Document Number: 30282
3Revision: 23-Feb-11
RE Military
Vishay Dale Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount
POWER RATING
Vishay RE resistor wattage ratings are based on mounting to the following heat sink:
RE60 and RE65: 4" x 6" x 2" x 0.040" thick aluminum chassis
RE70 and RE75: 5" x 7" x 2" x 0.040" thick aluminum chassis
RE77 and RE80: 7" x 9" x 2" x 0.060" thick aluminum chassis
AMBIENT TEMPERATURE DERATING
Derating is required for ambient temperatures above 25 °C when mounted to specified heat sink, see the following graph.
REDUCED HEAT SINK DERATING
Derating is also required when recommended heat sink area is reduced.
FREE AIR POWER RATING
MILITARY
MODEL RE60 RE65 RE70 RE75 RE77 RE80
W at 25 °C
368103075
RATED POWER IN %
- 55 - 50 0 50 150 250
AMBIENT TEMPERATURE IN °C
25
120
0
20
40
60
80
100
1 100010010
0
35
30
25
20
15
10
5
CHASSIS AREA IN SQUARE INCHES
POWER IN W
RE75
RE70
RE65
RE60
1 100010010
0
140
120
100
80
60
40
20
CHASSIS AREA IN SQUARE INCHES
POWER IN W
RE80
RE77
Document Number: 30282 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com
Revision: 23-Feb-11 4
RE Military
Wirewound Resistors, Military, MIL-PRF-18546 Qualified,
Type RE, Aluminum Housed, Chassis Mount Vishay Dale
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: For RH100 and RH250 terminals are
threaded stainless steel. All others are 60/40 tin/lead (Sn/Pb)
w/Nickel underplate on copper clad steel core terminal.
Part Marking: Dale, model, wattage, value, tolerance, date
code
NON-INDUCTIVE (TYPE N)
Models of equivalent physical and electrical specifications
are available with non-inductive (Aryton-Perry) winding.
They are identified by substituting the letter N for G in the
model number (RE60N, for example).
PERFORMANCE
TEST CONDITIONS OF TEST TEST LIMITS
Thermal Shock Rated power applied until thermally stable,
then a minimum of 15 min at - 55 °C ± (0.5 % + 0.05 ) R
Short Time Overload 5 x rated power for 5 s ± (0.5 % + 0.05 ) R
Dielectric Withstanding Voltage 1000 Vrms for RE60, RE65 and RE70; 2000 Vrms for RE75;
4500 Vrms for RE77 and RE80; duration 1 min ± (0.2 % + 0.05 ) R
Temperature 250 °C for 2 h ± (0.5 % + 0.05 ) R
Moisture Resistance MIL-STD-202 Method 106, 7b not applicable ± (1.0 % + 0.05 ) R
Shock, Specified Pulse MIL-STD-202 Method 213, 100 g’s for 6 ms, 10 shocks ± (0.2 % + 0.05 ) R
Vibration, High Frequency Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each ± (0.2 % + 0.05 ) R
Load Life 1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (1.0 % + 0.05 ) R
Terminal Strength
30 s, 5 pound pull test for RE60 and RE65,
10 pound pull test for other sizes;
torque test - 24 pound inch for RE77 and 32 pound inch for RE80
± (0.2 % + 0.05 ) R
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www.vishay.com Vishay
Revision: 12-Mar-12 1Document Number: 91000
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