Precision Mil-Qualified
Metal Glaze™ Resistor
RN Series
•
1/8 watt to 1/2 watt
•
10 ohms to 1M ohms
•
0.1% to 1% tolerance
•
MIL-R-10509 ±25 ppm/°C to ±100
High temperature
soldered termination-lead
assembly
Spiraled or laser
helixed to
resistance value,
tolerance
Digital marking per
MIL-R-10509
Tough molded jacket
Metal Glaze thick film
element fired at 1000°C to
solid ceramic core
Tin-lead electroplated copper leads
Electrical Data
MIL Type
RN50C*
RN55D
RN55C
RN55E
RN60D
RN60C
RN60E
Marking
Stamp
Stamp
Stamp
Stamp
Stamp
Stamp
Stamp
Tolerance
(±%)
1
1
0.1, 0.5, 1
0.1, 0.5, 1
1
0.1, 0.5, 1
0.1, 0.5, 1
T.C.
(ppm/°C)
50
100
50
25
100
50
25
Power Rating
(watts)
1/20 @ 125°C
1/8 @ 70°C
1/10 @ 125°C
1/10 @ 125°C
1/4 @ 70°C
1/8 @ 125°C
1/8 @ 125°C
Resistance
Range
(ohms)
10 to 100K
10 to 301M
49.9 to 100M
49.9 to 100M
10 to 1M
49.9 to 499K
49.9 to 499K
Nominal
Size
1/8W
1/4W
1/4W
1/4W
1/2W
1/2W
1/2W
Max Voltage
Rating
200
200
200
200
300
250
250
* Conformally coated construction on all 1/8 nominal sizes.
Environmental Data
Test Conditions
Temperature Coefficient (ppm/°C)
Low Temperature Operation
Temperature Cycling
Moisture Resistance
Short Time Overload
Load Life (70°C-1/2W, 125°C-1/100W) 1000 hours
Terminal Strength
Effect of Soldering
Shock
Vibration
High Temperature Exposure (150°C No Load)
2X Rated Power for 10,000 hours @ 70°C
Temperature Rise @ 1/4W Power Load
Dielectric Strength
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.
MIL-R-10509 Test
Limits Allowed
RN55 (D)
+200/-500
±0.50%
±0.50%
±1.50%
±0.50%
±1.00%
±0.20%
±0.50%
±0.50%
±0.50%
N/A
N/A
-
±0.50%
RN55 (C)
±50
±0.25%
±0.25%
±0.50%
±0.25%
±0.50%
±0.20%
±0.10%
±0.25%
±0.25%
N/A
N/A
-
±0.25%
T0-55
±100
RN55 Max.
%∆R (±3σ)
T2-55
±50
±0.10%
±0.10%
±0.50%
±0.10%
±0.20%
±0.05%
±0.10%
±0.05%
±0.05%
±0.50%
±0.50%
±0.10%
±0.10%
±0.50%
±0.10%
±0.30%
±0.05%
±0.10%
±0.05%
±0.05%
±0.50%
±0.50%
See Temperature Rise Chart
±0.05%
±0.05%
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
Precision Mil-Qualified
Metal Glaze™ Resistor
Physical Data
LL
BL
LD
BD
Dimensions (Inches and (mm))
Nominal
Size
1/8 watt
Body Length
BL
0.150 ±0.020
(3.8 ±0.5)
0.250 ±0.015
(6.4 ±0.4)
0.390 ±0.010
(9.9 ±0.3)
Body Diameter
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)
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)
Lead Diameter
LD
0.016 ±0.002
(0.41 ±0.05)
0.025 ±0.002
(0.64 ±0.05)
0.025 ±0.002
(0.64 ±0.05)
Clean Lead
0.225
(5.7)
0.310
(7.9)
0.450
(11.4)
1/4 watt
1/2 watt
MIL Spec. Power Derating Chart
% Of MIL Spec. Rated Power
100
80
60
40
20
0
0
125
150
165
175
RN55D, 60D
RN55C, 60C
& 50C, RN55E,
60E
Ordering Data
Sample Part No.
MIL Style
RN
55
D
1002
F
RL = Fixed Film Resistor
High stability
Power Rating
50 = 1/20 watt
55 = 1/10 watt
60 = 1/8 watt
T.C. Characteristics
D = ±100ppm/°C
C = ±50ppm/°C
E = ±25ppm/°C
Resistance
Ambient Temperature (°C)
First three digits represent significant figures;
fourth digit is number of zeros.
Tolerance
F = ±1%, D = ±0.5%, B = ±0.1%
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
RN Series Issue November 2008 Sheet 2 of 2
