1
ISO-9001
Registered
PRECISION NON MILITARY
METAL GLAZE™ RESISTORS
RG SERIES
• •
• •
• 1/8 watt to 3 watts
• •
• •
• 0.4 ohm to 5.1 megohms
• •
• •
• 0.5% to 5% tolerance; 0.1% in selected ranges
• •
• •
• ±25 ppm/°C to ±200 ppm/°C
High temperature soldered
termination-lead assembly
Tough molded jacket. RG 1/8 types
have glass-filled conformal jacket
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
Digital or color
code marking
SPECIFICATIONS:
IRC TYPE
RG 1/81
RG 1/4
RG 1/2
TO-501
T2-501
T9-501
TF-051
TF-07
TF-20
GF-55
GF-07
GF-60
GF-20
GF-3
GS-3
RG-07
RG-20
TO-55
T2-55
T9-55
T0-60
T2-60
T9-60
MIL TYPE
-
-
-
-
-
-
-
-
-
Flame Resist2
Flame Resist2
Flame Resist2
Flame Resist2
Flame Resist2
-
-
-
-
-
-
-
-
-
Tol (±%)
2, 5
5
5
.5, 1
.5, 1
.5, 1
1, 2, 5
1, 2, 5
1, 2, 5
1
2, 5
1
2, 5
1, 2, 5
1, 2, 5
2, 5
2, 5
.1, .5, 13
.1, .5, 13
.1, .5, 13
.1, .5, 13
.1, .5, 13
.1, .5, 13
Marking
Band
Band
Band
Stamp
Stamp
Stamp
Band/Stamp
Band/Stamp
Band/Stamp
Stamp
Stamp
Stamp
Stamp
Stamp
Stamp
Band
Band
Band/Stamp
Stamp
Stamp
Band/Stamp
Stamp
Stamp
IRC
Resistance
Range (ΩΩ
ΩΩ
Ω)
4.3 to 1.5M
4.3 to 5.1M
4.3 to 5.1M
10 to 1M
10 to 1M
10 to 1M
.4 to 9.9
.4 to 9.9
.4 to 9.9
.4 to 2M
.4 to 2M
.4 to 2M
.4 to 2M
1 to 2M
1 to 3M
4.3 to 5.1M
4.3 to 5.1M
10 to 3.01M
10 to 3.01M
10 to 3.01M
10 to 3.01M
10 to 3.01M
10 to 3.01M
Nominal
Size
1/8W
1/4W
1/2W
1/8W
1/8W
1/8W
1/8W
1/4W
1/2W
1/4W
1/4W
1/2W
1/2W
3W
3W
1/4W
1/2W
1/4W
1/4W
1/4W
1/2W
1/2W
1/2W
Dimension
Code
1
2
3
1
1
1
1
2
3
2
2
4
4
5
5
2
3
2
2
2
4
4
4
IRC Power
Rating
(watts @ °C)
1/4 @ 70
1/2 @ 705
1 @ 70
1/4 @ 70
1/8 @ 70
1/8 @ 70
1/4 @ 70
1/2 @ 70
1 @ 70
1/2 @ 70
1/2 @ 70
3/4 @ 70
3/4 @ 70
2 @ 70
3 @ 70
2 @ 70
3 @ 70
1/2 @ 70
1 @ 70
1/2 @ 70
1/4 @ 70
1/4 @ 70
3/4 @ 70
1/2 @ 70
1/2 @ 70
Max.
Volt.
Rtg.
200
2506
350
200
200
200
200
250
250
250
250
350
350
750
1000
250
350
200
200
200
300
250
250
T.C.
(ppm/°C)
200
200
200
100
50
25
100
100
100
504, 100
100
504, 100
100
200
504, 100
200
200
100
50
25
100
50
25
1. Conformally coated constr uction on all 1/8W 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 @ 70°C available - see page 87.
6. Contact factory for details on higher voltage rating.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
2
ISO-9001
Registered
PERFORMANCE DATA:
0 25 50 75 100
0
50
100
150
200
GS-3 SURFACE TEMP. RISE
0 0.2 0.4 0.6 0.8 1.0 1.2
0
20
40
60
80
100
120
RG32***
RG20, RLR20**
TO-60*
RG 1/8W
RG07, TO-55
RG 'TO' FILM TEMP. RISE
Ambient Temperature (°C)% Of 25°C Power RatingApplied Power (watts)
Temperature (°C)
Temperature (°C)
% Of Commercial Rated Power
(in many cases, 2X MIL Spec. power rating)
COMMERCIAL POWER DERATING
HOW TO ORDER:
Sample Par t No.:
RG1/4 2203 (22K) 5%
IRC T ype
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
±0.1% to ±5%
See specification table for availability.
DIMENSIONS (Inches and (mm)):
Dim
Code
1
2
3
4
5
Nominal
Size
1/8
1/4
1/2W
1/2W
3W
Body
Length BL
0.150±0.020
(3.8±0.3)
0.250±0.015
(6.4±0.4)
0.390±0.010
(9.9±0.3)
0.390±0.010
(9.9±0.3)
0.515±0.010
(13.1±0.3)
Body Dia.
BD
0.066±0.008
(1.7±0.2)
0.090±0.008
(2.3±0.2)
0.140±0.008
(3.6±0.2)
0.140±0.008
(3.6±0.2)
0.225±0.008
(5.7±0.2)
Lead
Length LL
1.00±0.125
(25.4±3.2)
1.50±0.125
(38.1±3.2)
1.50±0.125
(38.1±3.2)
1.50±0.125
(38.1±3.2)
1.50±0.125
(38.1±3.2)
Lead Dia. LD
0.016±0.002
(0.41±0.05)
0.025±0.002
(0.64±0.05)
0.032±0.002
(0.81±0.05)
0.025±0.002
(0.64±0.05)
0.032±0.002
(0.81±0.05)
Clean
Lead
0.225
(5.7)
0.310
(7.9)
0.450
(11.4)
0.450
(11.4)
0.575
(14.6)
RG 1/4 HIGH-FREQUENCY
CHARACTERISTICS
50ΩΩ
ΩΩ
Ω
2KΩΩ
ΩΩ
Ω
10KΩΩ
ΩΩ
Ω
100KΩΩ
ΩΩ
Ω
% Of DC Resistance
Frequency (MHz)
100
50
20
1 10 100 1000
*0.025 inch leads **0.032 inch leads
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
Note: Use f or repetitiv e pulses where the a v erage pow er dissipation is not to exceed
the component rating at 70°C. Surge handling capacity for low-repetitive surges may
be significantly greater than shown above. Contact factory for recommendations.
100
80
60
40
20
070 125 150 175
TO/T2-55 & 60
RG1/8, RG1/4, RG07,
RG20, TF07, TF20