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.

A subsidiary of

TT electronics plc

• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Wire and Film Technologies Division

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

RN Series

Precision Mil-Qualified

Metal Glaze™ Resistor

Electrical Data

MIL Type

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 301K

1/4W

200

RN55C

Stamp

0.1, 0.5, 1

50

1/10 @ 125°C

49.9 to 100K

1/4W

200

RN55E

Stamp

0.1, 0.5, 1

25

1/10 @ 125°C

49.9 to 100K

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

* Conformally coated construction on all 1/8 nominal sizes.

Test Conditions

MIL-R-10509 Test

Limits Allowed

RN55 Max.

%

ΔR (±3σ)

RN55 (D)

RN55 (C)

T0-55

T2-55

Temperature Coefficient (ppm/°C)

+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%

Temperature Rise @ 1/4W Power Load

-

-

See Temperature Rise Chart

Dielectric Strength

±0.50%

±0.25%

±0.05%

±0.05%

Environmental Data

Tough molded jacket

Metal Glaze thick film

element fired at 1000°C to

solid ceramic core

Tin-lead electroplated copper leads

Spiraled or laser

helixed to

resistance value,

tolerance

High temperature

soldered termination-lead

assembly

Digital marking per

MIL-R-10509

RN Series Issue March 2009 Sheet 1 of 2