1
ISO-9001
Registered
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
Spiralled or laser
helixed to resistance
value, tolerance
Digital
marking per
MIL-R-10509
Tin-lead electroplated
copper leads
Tough molded jacket
Metal Glaze thick film
element fired at 1000°C to
solid ceramic core
SPECIFICATIONS: MIL 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
T.C.
(ppm/°C)
50
100
50
25
100
50
25
Marking
Stamp
Stamp
Stamp
Stamp
Stamp
Stamp
Stamp
MIL T ype
RN50C*
RN55D
RN55C
RN55E
RN60D
RN60C
RN60E
MIL Resistance
Range (ohms)
10 to 100K
10 to 301K
49.9 to 100K
49.9 to 100K
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
Nominal
Size
1/8 watt
1/4 watt
1/2 watt
Body
Length BL
0.150±0.020
(3.8±0.5)
0.250±.015
(6.4±.4)
0.390±.010
(9.9±.3)
Body
Diameter BD
0.066±0.008
(1.7±0.2)
0.090±.008
(2.3±.2)
0.140±.008
(3.6±.2)
Lead
Length LL
1.00±0.125
(25.4±3.2)
1.50±.125
(38.1±3.2)
1.50±.125
(38.1±3.2)
Lead
Diameter LD
0.016±0.002
(0.41±0.05)
0.025±.002
(0.64±0.05)
0.025±.002
(0.64±0.05)
Clean Lead
0.225
(5.7)
0.310
(7.9)
0.450
(11.4)
DIMENSIONS (Inches and (mm)):
Tolerance
(±%)
1
1
0.1, 0.5, 1
0.1, 0.5, 1
1
0.1, 0.5, 1
0.1, 0.5, 1
100
80
60
40
20
070 125 150 165 175
RN55C, 60C
& 50C, RN55E,
60E
Ambient Temperature (°C)
% Of MIL Spec. Rated Power
MIL SPEC PO WER DERATING:
HOW TO ORDER:
Sample Part No.:
RN - 55 - D - 1002 - F
MIL Style
RL=Fixed film resistor
High stability
Power Rating
50=1/20 watt
55=1/10 watt
60=1/8 watt
T.C. Characteristics
D=±100 ppm/°C
C=±50 ppm/°C
E=±25 ppm/°C
Resistance
First three digits represent significant
figures; fourth digit is number of zeros.
Tolerance
F=±1%, D=±0.5%, B=±0.1%
RN55D, 60D
Note: *Conformal coating construction on 1/8 nominal size resistors.
RN55 PERFORMANCE:
Test Conditions
Temperature Coefficient ppm/°C
Low T emperature Operation
Temperature Cycling
Moisture Resistance
Short Time Overload
Load Life (70°C-1/2W, 125°C-1/100W) 1000 hrs.
Terminal Strength
Effect of Soldering
Shock
Vibration
High Temperature Exposure ( 150°C No Load)
2X Rated Power for 10,000 hrs. at 70°C
Temperature Rise at 1/4W Power Load
Dielectric Strength
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
±0.10%
±0.10%
±0.50%
±0.10%
±0.30%
±0.05%
±0.10%
±0.05%
±0.05%
±0.50%
±0.50%
±0.05%
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%
±0.05%
See Temp. Rise Chart
RN55
Max. %∆∆
∆∆
∆R(±3σσ
σσ
σ)
MIL-R-10509 Test
Limits Allowed
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, Nor th Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
