G, GN
Wirewound Resistors, Military, MIL-PRF-26 Qualified,
Type RW, Precision Power, Silicone Coated
Vishay Dale
DIMENSIONS in inches [millimeters]
1.5ꢀ
L
[38.1ꢀ] (1)
min.
D
L1
C
DIMENSIONS in inches [millimeters]
GLOBAL
MODEL
(2)
L
L1 max.
C
D
G-1-8ꢀ
G-1-38ꢀ
0.250 0.031
[6.35 0.787]
0.281
[7.14]
0.085 0.020
[2.16 0.508]
0.020 0.002
[0.508 0.051]
0.312 0.016
[7.92 0.406]
0.328
[8.33]
0.078 + 0.016 - 0.031
[1.98 + 0.406 - 0.787]
0.020 0.002
[0.508 0.051]
G2
G-3-8ꢀ
G-3-38ꢀ
0.406 0.031
[10.31 0.787]
0.437
[11.10]
0.094 0.031
[2.39 0.787]
0.020 0.002
[0.508 0.051]
0.562 0.062
[14.27 1.57]
0.622
[15.80]
0.188 0.032
[4.78 0.813]
0.032 0.002
[0.813 0.051]
G-5
G-5C
0.500 0.062
[12.70 1.57]
0.593
[15.06]
0.218 0.032
[5.54 0.813]
0.040 0.002
[1.02 0.051]
0.875 0.062
[22.23 1.57]
1.0
[25.4]
0.312 0.032
[7.92 0.813]
0.040 0.002
[1.02 0.051]
G-1ꢀ
Notes
(1) On some standard reel pack methods, the leads may be trimmed to a shorter length than shown
(2)
L1 max. dimension is clean lead to clean lead
MATERIAL SPECIFICATIONS
120
Element: Copper-nickel alloy or nickel-chrome alloy,
100
depending on resistance value
Core: Ceramic, beryllium oxide or alumina, depending on
resistor model
80
Coating: Special high temperature silicone
60
Standard Terminals: 100 % Sn, or 60/40 Sn/Pb coated
Copperweld®
CHAR. V
40
End Caps: Stainless steel
Part Marking: DALE, model, wattage (1), value, tolerance,
20
date code
CHAR. U
Notes
0
(1) Wattage marked on part will be “U” characteristic
- 65 - 50
0
50
150
250
350
25
•
Military (RW) parts are only available with 60/40 Sn/Pb finishc
AMBIENT TEMPERATURE IN °C
Derating
GN NON-INDUCTIVE
TERMINATION
Models of equivalent physical and electrical specifications
are available with non-inductive (Aryton-Perry) winding.
They are identified by inserting the letter N after G in the
model number (GN-5, for example). Two conditions apply:
1. For GN models, divide maximum resistance values by two
2. Body O.D. on GN-5C may exceed that of the G-5C by 0.010"
When G resistors will be operated at full rated power,
resistance welding or high temperature solder are the
recommended termination methods. Termination should be
made within 1/2" from end of resistor body.
PERFORMANCE
TEST LIMITS
(CHARACTERISTIC U)
TEST
CONDITIONS OF TEST
Thermal Shock
Rated power applied until thermally stable, then a min. of 15 min at - 55 °C
5 x power (G-1-80 thru G-5C), 10 x power (G-10) for 5 s
1000 Vrms, 1 min
- 65 °C for 24 h
250 h at + 250 °C (Characteristic U)
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100 g's for 6 ms, 10 shocks
Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 h each
2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
(0.2 % + 0.05 Ω) ΔR
(0.2 % + 0.05 Ω) ΔR
(0.1 % + 0.05 Ω) ΔR
(0.2 % + 0.05 Ω) ΔR
(0.5 % + 0.05 Ω) ΔR
(0.2 % + 0.05 Ω) ΔR
(0.1 % + 0.05 Ω) ΔR
(0.1 % + 0.05 Ω) ΔR
(0.5 % + 0.05 Ω) ΔR
Short Time Overload
Dielectric Withstanding Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
5 to 10 s, 5 or 10 lb pull test (depending on size), torsion test - 3 alternating
directions, 360° each
Terminal Strength
(0.1 % + 0.05 Ω) ΔR
Document Number: 30205
Revision: 22-Mar-06
For technical questions, contact: ww2bresistors@vishay.com
www.vishay.com
151