G, GN
Wirewound Resistors, Military, MIL-PRF-26 Qualified,
Type RW, Precision Power, Silicone Coated
Vishay Dale
DIMENSIONS
1.50
[38.10]*
MODEL
DIMENSIONS in inches [millimeters]
L
Min.
L
L1
C
D
(Max.)**
G-1-80
G-1-380
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]
D
L1
C
G-2
0.312 ± 0.016
[7.92 ± 0.406]
0.328
[8.33]
0.078 + 0.016 - 0.031 0.020 ± 0.002
[1.98 + 0.406 - 0.787] [0.508 ± 0.051]
*On some standard reel pack methods, the leads may be trimmed to
a shorter length than shown.
G-3-80
G-3-380
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]
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
G-5
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]
Core: Ceramic, Beryllium oxide or alumina, depending on
resistor model
Coating: Special high temperature silicone
Standard Terminals: Tinned Copperweld®
End Caps: Stainless steel
G-5C
G-10
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]
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
120
GN NON-INDUCTIVE
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:
100
80
60
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"
CHAR. V
40
TERMINATION
20
CHAR. U
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.
0
-65 -50
0
50
150
250
350
25
AMBIENT TEMPERATURE IN °C
Derating
PERFORMANCE
TEST
CONDITIONS OF TEST
TEST LIMITS
(CHARACTERISTIC U)
Thermal Shock
Rated power applied until thermally stable, then a minimum of 15 minutes at - 55°C
5 x power (G-1-80 thru G-5C), 10 x power (G-10) for 5 seconds
1000V rms, one minute
± (0.2% + 0.05Ω) ∆R
± (0.2% + 0.05Ω) ∆R
± (0.1% + 0.05Ω) ∆R
± (0.2% + 0.05Ω) ∆R
± (0.5% + 0.05Ω) ∆R
± (0.2% + 0.05Ω) ∆R
± (0.1% + 0.05Ω) ∆R
± (0.1% + 0.05Ω) ∆R
± (0.5% + 0.05Ω) ∆R
± (0.1% + 0.05Ω) ∆R
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° (Characteristic U)
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100g's for 6 milliseconds, 10 shocks
Frequency varied 10 to 2000Hz, 20g 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°C each
Terminal Strength
Document Number 30205
Revision 06-Apr-01
For technical questions, contact ww2bresistors@vishay.com
www.vishay.com
119