G, GN
Vishay Dale
Wirewound Resistors, Military, MIL-PRF-26 Qualified,
Type RW, Precision Power, Silicone Coated
FEATURES
• From 1.4 to 4 times higher power ratings than conventional
resistors of equivalent size
• High temperature coating
• Complete welded construction
• Meets applicable requirements of MIL-PRF-26
• Available in non-inductive styles (type GN) with Aryton-
Perry winding for lowest reactive components
• Excellent stability in operation
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
MIL-PRF-26
POWER RATING*
P
25
°
C
W
U
V
±
0.05% thru
±
5%
±
3% &
±
5%
1.0
1.0
1.5
2.0
2.0
4.0
5.0
—
—
—
—
—
5.0
7.0
RESISTANCE RANGE
MIL. RANGE SHOWN IN BOLD FACE
Ω
WEIGHT
(Typical)
g
0.20
0.20
0.21
0.34
0.34
0.80
1.20
3.60
TYPE
G-1-80
G-1-380
G-2
G-3-80
G-3-380
G-5
G-5C
—
RW81
—
—
RW80
—
—
±
0.05%
1.0 - 1k
—
1.0 - 1.3k
1.0 - 2.74k
—
0.499 - 6.5k
0.499 - 8.6k
±
0.1%
0.499 - 1k
0.499 - 1k
0.499 - 1.3k
0.499 - 2.74k
0.499 - 2.74k
0.499 - 6.5k
0.499 - 8.6k
±
0.25%
0.499 - 3.4k
0.499 - 1k
0.499 - 4.9k
0.499 - 10.4k
0.499 - 2.74k
0.1 - 24.5k
0.1 - 32.3k
±
0.5%,
±
1%
±
3%,
±
5%
0.1 - 3.4k
0.1 - 1k
0.1 - 4.9k
0.1 - 10.4k
0.1 - 2.74k
0.1 - 24.5k
0.1 - 32.3k
0.1 - 95.2k
G-10
—
7.0
10.0
0.499 - 25.7k
0.499 - 25.7k
0.1 - 95.2k
*Vishay Dale G models have two power ratings, depending on operation temperature and stability requirements.
NOTE:
Shaded area indicates most popular models.
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Dielectric Withstanding Voltage
Short Time Overload
Maximum Working Voltage
Insulation Resistance
Terminal Strength
Solderability
Operating Temperature Range
Power Rating
UNIT
ppm/˚C
V
AC
–
V
Ω
lb
–
°C
–
G RESISTOR CHARACTERISTICS
±
90 for below 1Ω,
±
50 for 1Ω to 9.9Ω,
±
20 for 10Ω and above
500 minimum for G-1-80 thru G-3-380, 1000 minimum for all others
5 x rated power for 5 seconds for G-1-80 thru G-5C (Characteristic U),
10 x rated power for 5 seconds for G-10
(P x R)
1/2
1000 Megohm minimum dry, 100 Megohm minimum after moisture test
5 minimum for G-1-80 thru G-3-380, 10 minimum for all others
MIL-PRF-26 type - Meets requirements of ANSI J-STD-002
Non Mil type - Terminals are 60/40 electro tin plated to facilitate soldering
Characteristic U = - 65/+ 250, Characteristic V = - 65/+ 350
Characteristic U - + 250°C max. hot spot temperature,
±
0.5% max.
∆R
in 2000 hr. load life
Characteristic V - + 350°C max. hot spot temperature,
±
3.0% max.
∆R
in 2000 hr. load life
ORDERING INFORMATION
G-3-80
MODEL
10
Ω
RESISTANCE
Ω
1.0%
TOLERANCE
±
%
www.vishay.com
118
For technical questions, contact ww2bresistors@vishay.com
Document Number 30205
Revision 06-Apr-01
G, GN
Wirewound Resistors, Military, MIL-PRF-26 Qualified,
Type RW, Precision Power, Silicone Coated
DIMENSIONS
L
1.50
[38.10]*
Min.
Vishay Dale
MODEL
L
G-1-80
G-1-380
G-2
G-3-80
G-3-380
G-5
G-5C
G-10
DIMENSIONS
in inches [millimeters]
L
1
(Max.)**
0.281
[7.14]
0.328
[8.33]
0.437
[11.10]
0.622
[15.80]
0.593
[15.06]
1.0
[25.4]
C
0.085
±
0.020
[2.16
±
0.508]
D
0.020
±
0.002
[0.508
±
0.051]
L
1
D
C
0.250
±
0.031
[6.35
±
0.787]
0.312
±
0.016
[7.92
±
0.406]
0.406
±
0.031
[10.31
±
0.787]
0.562
±
0.062
[14.27
±
1.57]
0.500
±
0.062
[12.70
±
1.57]
0.875
±
0.062
[22.23
±
1.57]
*On some standard reel pack methods, the leads may be trimmed to
a shorter length than shown.
0.078 + 0.016 - 0.031 0.020
±
0.002
[1.98 + 0.406 - 0.787] [0.508
±
0.051]
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]
MATERIAL SPECIFICATIONS
Element:
Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core:
Ceramic, Beryllium oxide or alumina, depending on
resistor model
Coating:
Special high temperature silicone
Standard Terminals:
Tinned Copperweld
®
End Caps:
Stainless steel
Part Marking:
DALE, Model, Wattage*, Value, Tolerance,
Date Code
*Wattage marked on part will be "U" characteristic
RATED POWER IN %
120
100
80
60
CHAR. V
40
20
0-65 -50
**L
1
(Max.) dimension is clean lead to clean lead.
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:
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. U
0
25
50
150
250
350
TERMINATION
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.
Derating
AMBIENT TEMPERATURE IN
°
C
PERFORMANCE
TEST
CONDITIONS OF TEST
TEST LIMITS
(CHARACTERISTIC U)
±
(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
Thermal Shock
Short Time Overload
Dielectric Withstanding Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Terminal Strength
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
- 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
Document Number 30205
Revision 06-Apr-01
For technical questions, contact ww2bresistors@vishay.com
www.vishay.com
119
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