G, GN
Wirewound Resistors, Military, MIL-PRF-26 Qualified,
Vishay Dale
1.5ꢀ
L
DIMENSIONS
DIMENSIONS in inches [millimeters]
[38.1ꢀ]*
GLOBAL
MODEL
Min.
L1**
L
C
D
(Max.)
D
G-1-8ꢀ
0.250 0.031 0.281
[6.35 0.787] [7.14]
0.085 0.020
[2.16 0.508]
0.020 0.002
[0.508 0.051]
L1
C
* On some standard reel pack methods, the leads may be trimmed
to a shorter length than shown.
G-1-38ꢀ
0.312 0.016 0.328 0.078 + 0.016 - 0.031 0.020 0.002
[7.92 0.406] [8.33] [1.98 + 0.406 - 0.787] [0.508 0.051]
G2
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
G-3-8ꢀ
0.406 0.031 0.437
[10.31 0.787] [11.10]
0.562 0.062 0.622
[14.27 1.57] [15.80]
0.500 0.062 0.593
[12.70 1.57] [15.06]
0.094 0.031
[2.39 0.787]
0.188 0.032
[4.78 0.813]
0.218 0.032
[5.54 0.813]
0.312 0.032
[7.92 0.813]
0.020 0.002
[0.508 0.051]
0.032 0.002
[0.813 0.051]
0.040 0.002
[1.02 0.051]
0.040 0.002
[1.02 0.051]
Core: Ceramic, Beryllium oxide or alumina, depending on
resistor model
G-3-38ꢀ
Coating: Special high temperature silicone
G-5
Standard Terminals: 100 % Sn, or 60/40 Sn/Pb coated
Copperweld®
G-5C
G-1ꢀ
NOTE: Military (RW) parts are only available with 60/40
Sn/Pb finish
0.875 0.062
1.0
End Caps: Stainless steel
[22.23 1.57] [25.4]
Part Marking: DALE, Model, Wattage*, Value, Tolerance,
Date Code
** L1 (Max.) dimension is clean lead to clean lead.
* Wattage marked on part will be "U" characteristic
GN NON-INDUCTIVE
120
100
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:
80
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"
60
CHAR. V
40
TERMINATION
20
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 inch from end of resistor body.
CHAR. U
0
- 65 - 50
0
50
150
250
350
25
AMBIENT TEMPERATURE IN °C
Derating
PERFORMANCE
TEST LIMITS
TEST
CONDITIONS OF TEST
(CHARACTERISTIC U)
(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
Thermal Shock
Rated power applied until thermally stable, then a min. of 15 minutes at - 55 °C
5 x power (G-1-80 thru G-5C), 10 x power (G-10) for 5 sec.
1000 Vrms, one minute
Short Time Overload
Dielectric Withstanding Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
- 65 °C for 24 hours
250 hours at + 250 °C (Characteristic U)
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100 g's for 6 milliseconds, 10 shocks
Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 hours each
2000 hours at rated power, + 25 °C, 1.5 hours “ON”, 0.5 hours “OFF”
5 to 10 sec., 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
129
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