General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print. A subsidiary of
TT electronics plc
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Wire and Film Technologies Division
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Precision Non Military
Metal Glaze™ Resistors
RG Series
• Surge Capabilities
• 1/8 watt to 3 watts
• 0.4 ohm to 5.1 megohms
• ±25 ppm/°C to ±200 ppm/°C
• 0.5% to 5% tolerance; 0.1% in selected ranges
Electrical Data
IRC
Type
MIL
Type Marking Tolerance
(ppm/°C)
T.C.
(ppm/°C)
IRC Power
Rating
(watts @ °C)
Maximum
Voltage
Rating
IRC
Resistance
Range (Ω)
Nominal
Size
Dimension
Code
RG 1/8¹
RG 1/4
RG 1/2
-
-
-
Band
Band
Band
2, 5
5
5
200
200
200
1/4 @ 70
1/2 @ 705
1 @ 70
200
2506
350
4.3 to 1.5M
4.3 to 5.1M
4.3 to 5.1M
1/8W
1/4W
1/2W
1
2
3
TO-50¹
T2-50¹
T9-50¹
-
-
-
Stamp
Stamp
Stamp
.5, 1
.5, 1
.5, 1
100
50
25
1/4 @ 70
1/8 @ 70
1/8 @ 70
200
200
200
10 to 1M
10 to 1M
10 to 1M
1/8W
1/8W
1/8W
1
1
1
TF-05¹
TF-07
TF-20
-
-
-
Band/Stamp
Band/Stamp
Band/Stamp
1, 2, 5
1, 2, 5
1, 2, 5
100
100
100
1/4 @ 70
1/2 @ 70
1 @ 70
200
250
250
.4 to 9.9
.4 to 9.9
.4 to 9.9
1/8W
1/4W
1/2W
1
2
3
GF-55
GF-07
Flame-Resist2
Flame-Resist2
Stamp
Stamp
1
2, 5
504, 100
100
1/2 @ 70
1/2 @ 70
250
250
.4 to 2M
.4 to 2M
1/4W
1/4W
2
2
GF-60
GF-20
Flame-Resist2
Flame-Resist2
Stamp
Stamp
1
2, 5
504, 100
100
3/4 @ 70
3/4 @ 70
350
350
.4 to 2M
.4 to 2M
1/2W
1/2W
4
4
GF-3
GS-3
Flame-Resist2
-
Stamp
Stamp
1, 2, 5
1, 2, 5
200
504, 100
2 @ 70
3 @ 70
2 @ 70
3 @ 70
750
1000
1 to 2M
1 to 3M
3W
3W
5
5
RG-07
RG-20
-
-
Band
Band
2, 5
2, 5
200
200
1/2 @ 70
1 @ 70
250
350
4.3 to 5.1M
4.3 to 5.1M
1/4W
1/2W
2
3
TO-55
T2-55
T9-55
T0-60
T2-60
T9-60
-
-
-
-
-
-
Band/Stamp
Stamp
Stamp
Band/Stamp
Stamp
Stamp
.1, .5, 1³
.1, .5, 1³
.1, .5, 1³
.1, .5, 1³
.1, .5, 1³
.1, .5, 1³
100
50
25
100
50
25
1/2 @ 70
1/4 @ 70
1/4 @ 70
3/4 @ 70
1/2 @ 70
1/2 @ 70
200
200
200
300
250
250
10 to 3.01M
10 to 3.01M
10 to 3.01M
10 to 3.01M
10 to 3.01M
10 to 3.01M
1/4W
1/4W
1/4W
1/2W
1/2W
1/2W
2
2
2
4
4
4
Notes:
1. Conformally coated construction on all 1/8 nominal size resistors.
2. Contact factory for details on flame-resistant specifications.
3. Only available in F tolerance above 2M ohm.
4. Below 10 ohms only available in 100 ppm.
5. 1 Watt @ 70C available - see page 87.
6. Contact factory for details on higher voltage rating.
Tough molded jacket.
RG 1/8 types
have glass-filled
conformal jacket
Digital or color
code marking
Metal Glaze thick film element fired
at 1000°C to solid ceramic core
30-70 Electroplated copper leads
Spiraled or laser
helixed to
resistance value,
tolerance
High temperature
soldered termination-lead
assembly
RG Series Issue December 2008 Sheet 1 of 3
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Wire and Film Technologies Division
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Dimensions
Dim
Code
Nominal
Size
Body Length
BL
Body Diameter
BD
Lead Length
LL
Lead Diameter
LD Clean Lead
1 1/8 0.150 ± 0.020
(3.8 ± 0.3)
0.066 ± 0.008
(1.7 ± 0.2)
1.00 ± 0.125
(25.4 ± 3.2)
0.016 ± 0.002
(0.41 ± 0.05)
0.225
(5.7)
2 1/4 0.250 ± 0.015
(6.4 ± 0.4)
0.090 ± 0.008
(2.3 ± 0.2)
0.150 ± 0.125
(38.1 ± 3.2)
0.025 ± 0.002
(0.64 ± 0.05)
0.310
(7.9)
3 1/2W 0.390 ± 0.010
(9.9 ± 0.3)
0.140 ± 0.008
(3.6 ± 0.2)
0.150 ± 0.125
(38.1 ± 3.2)
0.032 ± 0.002
(0.81 ± 0.05)
0.450
(11.4)
4 1/2W 0.390 ± 0.010
(9.9 ± 0.3)
0.140 ± 0.008
(3.6 ± 0.2)
0.150 ± 0.125
(38.1 ± 3.2)
0.025 ± 0.002
(0.64 ± 0.05)
0.450
(11.4)
5 3W 0.515 ± 0.010
(13.1 ± 0.3)
0.225 ± 0.008
(5.7 ± 0.2)
0.150 ± 0.125
(38.1 ± 3.2)
0.032 ± 0.002
(0.81 ± 0.05)
0.575
(14.6)
LL
LD
BL
BD
Physical Data
Precision Non Military
Metal Glaze™ Resistors
RG ‘TO’ Temperature Rise
120
100
80
0
00.2
Temperature (°C)
Applied Power (watts)
RG 1/8W
0.4 0.6 0.8 1.0 1.2
60
40
20
*0.025 inch leads **0.032 inch leads
RG07, TO-55
TO-60*
RG20, RLR20**
GS-3 Surface Temperature Rise
0
% of 25°C Power Rating
25 50 75 100
150
0
Temperature (°C)
100
50
200
RG Series Issue December 2008 Sheet 2 of 3
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Wire and Film Technologies Division
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Sample Part No.
IRC Type
See specification table for types available.
Resistance
Standard EIA/MIL resistance values for metal film resistors.
See specification table for range on inside back cover.
Tolerance
J = ±5%
G = ±2%
F = ±1%
See specification table for availability.
Ordering Data
RG1/4 2203 J
Precision Non Military
Metal Glaze™ Resistors
Commercial Power
Derating Curve
100
80
60
40
70 125 150 175
% Of Commercial Rated Power
(in many cases,
2X MIL Spec. power rating)
Ambient Temperature (°C)
RG1/8, RG1/4, RG07,
RG20, TF07, TF20
20
0
TO/T2-55 & 60
1 10 100 1000
20
50
100
Frequency (MHz)
% Of DC Resistance
50Ω
2KΩ
10KΩ
100KΩ
RG 1/4 High-Frequency
Characteristics
Repetitive Surge Curve
Note: Use for Repetitive pulses where the average power dissipation is not to exceed the component rating at 70°C.
Please consult factory for applications subject to non-repetitive or low repetition rate surges.
RG Series Issue December 2008 Sheet 3 of 3
