Resistors
OBSOLETE
Make Possible
Precision Mil-Qualified
Metal Glaze™ Resistor
Precision Mil-Qualified
RN Series
Metal Glaze™ Resistor
1/8 watt to 1/2 watt
10 ohms to 1M ohms
0.5% to 1% tolerance
RN
MIL-R-10509 ±25 ppm/°C to ±100
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
Spiraled or laser
helixed to
resistance
value,
tolerance
High temperature
soldered termination-lead
assembly
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
* Conformally coated construction on all 1/8 nominal sizes.
Marking
Stamp
Stamp
Tolerance
(±%)
1
1
T.C.
(ppm/°C)
50
100
Power Rating
(watts)
1/20 @ 125°C
1/8 @ 70°C
Resistance
Range
(ohms)
10 to 100K
10 to 301K
Nominal
Size
1/8W
1/4W
Max Voltage
Rating
200
200
Stamp
1
100
1/4 @ 70°C
10 to 1M
1/2W
300
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.
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%
All information is subject
General Note
to IRC’s own data and is considered accurate at time of going to print.
TT Electronics reserves the right to make changes in
South Staples Street • Corpus Christi
notice or liability.
Wire and Film Technologies Division
• 4222
product specification without
Texas 78411 USA
Telephone: 361 992
subject to TT Electronics’
Website: www.irctt.com
All information is
7900 • Facsimile: 361 992 3377 •
own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
RN Series Issue March 2009 Sheet 1 of 2
www.ttelectronicsresistors.com
© TT Electronics plc
10.14
Precision Mil-Qualified
Metal Glaze™ Resistor
Precision Mil-Qualified
Metal Glaze™ Resistor
RN Series
Make Possible
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%
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 March 2009 Sheet 2 of 2
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
www.ttelectronicsresistors.com
© TT Electronics plc
10.14
