Precision Mil-Qualified
Metal Glaze™ Resistor
High temperature
soldered termination-lead
assembly
RN Series
Spiraled or laser
helixed to
resistance value,
tolerance
• 1/8 watt to 1/2 watt
Digital marking per
MIL-R-10509
• 10 ohms to 1M ohms
Tough molded jacket
• 0.1% to 1% tolerance
Metal Glaze thick film
element fired at 1000°C to
solid ceramic core
• MIL-R-10509 ±25 ppm/°C to ±100
Tin-lead electroplated copper leads
Electrical Data
Marking
Tolerance
(±%)
T.C.
(ppm/°C)
Power Rating
(watts)
Resistance
Range
(ohms)
Nominal
Size
Max Voltage
Rating
RN50C*
Stamp
1
50
1/20 @ 125°C
10 to 100K
1/8W
200
RN55D
Stamp
1
100
1/8 @ 70°C
10 to 301M
1/4W
200
RN55C
Stamp
0.1, 0.5, 1
50
1/10 @ 125°C
49.9 to 100M
1/4W
200
RN55E
Stamp
0.1, 0.5, 1
25
1/10 @ 125°C
49.9 to 100M
1/4W
200
RN60D
Stamp
1
100
1/4 @ 70°C
10 to 1M
1/2W
300
RN60C
Stamp
0.1, 0.5, 1
50
1/8 @ 125°C
49.9 to 499K
1/2W
250
RN60E
Stamp
0.1, 0.5, 1
25
1/8 @ 125°C
49.9 to 499K
1/2W
250
MIL Type
* Conformally coated construction on all 1/8 nominal sizes.
Environmental Data
Test Conditions
MIL-R-10509 Test
Limits Allowed
RN55 Max.
%∆R (±3σ)
RN55 (D)
RN55 (C)
T0-55
T2-55
+200/-500
±50
±100
±50
Low Temperature Operation
±0.50%
±0.25%
±0.10%
±0.10%
Temperature Cycling
±0.50%
±0.25%
±0.10%
±0.10%
Moisture Resistance
±1.50%
±0.50%
±0.50%
±0.50%
Short Time Overload
±0.50%
±0.25%
±0.10%
±0.10%
Load Life (70°C-1/2W, 125°C-1/100W) 1000 hours
±1.00%
±0.50%
±0.30%
±0.20%
Terminal Strength
±0.20%
±0.20%
±0.05%
±0.05%
Effect of Soldering
±0.50%
±0.10%
±0.10%
±0.10%
Shock
±0.50%
±0.25%
±0.05%
±0.05%
Vibration
±0.50%
±0.25%
±0.05%
±0.05%
High Temperature Exposure (150°C No Load)
N/A
N/A
±0.50%
±0.50%
2X Rated Power for 10,000 hours @ 70°C
N/A
N/A
±0.50%
±0.50%
-
-
±0.50%
±0.25%
Temperature Coefficient (ppm/°C)
Temperature Rise @ 1/4W Power Load
Dielectric Strength
See Temperature Rise Chart
±0.05%
±0.05%
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.
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
RN Series Issue November 2008 Sheet 1 of 2
