Document Number: 31025

For technical questions, contact: ff2bresistors@vishay.com

www.vishay.com

Revision: 08-Jul-08

53

ERC (Military RNC/RNR)

Metal Film Resistors, Military/Established Reliability,

MIL-PRF-55182 Qualified, Type RNC, Characteristics J, H, K

Vishay Dale

DIMENSIONS in inches [millimeters]

A

D

B

C

(Max.)

Note:

VISHAY DALE

MODEL

MIL-PRF-55182

STYLE

AB

C

(Max.)

DE

ERC50

RNC50,

RNR50

0.150 ± 0.020

[3.81 ± 0.51]

0.070 ± 0.010

[1.78 ± 0.25]

0.187

[4.75]

0.016 ± 0.002

[0.41 ± 0.05]

1.25 ± 0.266

[31.75 ± 6.76]

ERC55

RNC55,

RNR55

0.250 + 0.031 - 0.046

[6.35 + 0.79 - 1.17]

0.094 ± 0.012

[2.39 ± 0.30]

0.300

[7.62]

0.025 ± 0.002

{0.64 ± 0.05]

1.50 ± 0.125

[38.1 ± 3.18]

ERC55..200

RNC60,

RNR60

0.280 ± 0.020

[7.11 ± 0.51]

0.097 ± 0.012

[2.46 ± 0.30]

0.350

[8.89]

0.025 ± 0.002

[0.64 ± 0.05]

1.50 ± 0.125

[38.1 ± 3.18]

ERC65

RNC65,

RNR65

0.562 ± 0.031

[14.27 ± 0.79]

0.180 ± 0.015

[4.57 ± 0.38]

0.687

[17.45]

0.025 ± 0.002

[0.64 ± 0.05]

1.50 ± 0.125

[38.1 ± 3.18]

ERC70

RNC70,

RNR70

0.562 ± 0.031

[14.27 ± 0.79]

0.180 ± 0.015

[4.57 ± 0.38]

0.687

[17.45]

0.032 ± 0.002

[0.81 ± 0.05]

1.50 ± 0.125

[38.1 ± 3.18]

MATERIAL SPECIFICATIONS

Element:

Vacuum-deposited nickel-chrome alloy

Encapsulation:

Specially formulated epoxy compound

Core:

Fire-cleaned high purity ceramic

Termination:

Standard lead material is solder-coated copper

Solderable and weldable per MIL-STD-1276, Type C.

POWER RATING

Power ratings are based on the following two conditions:

1. ± 2.0 % maximum

ΔR in 10 000 h load life

2. + 175 °C maximum operating temperature

APPLICABLE MIL-SPECIFICATIONS

MIL-PRF-55182:

The ERC series meets the electrical, environmental and

dimensional requirements of MIL-PRF-55182.

MIL-R-10509:

MIL-PRF-55182 supercedes MIL-R-10509 on new designs.

The

ERC

series

meets

or

exceeds

MIL-R-10509

requirements.

Documentation:

Qualification and failure rate verification test data is

maintained by Vishay Dale and is available upon request.

Lot traceability and identification data is maintained by

Vishay Dale for five years.

Vishay Dale ERC resistors have an operating temperature

range of - 65 °C to + 175 °C. They must be derated

according to the following curve:

CAGE CODE: 91637

0

25

50

75

100

150

175 200

125

AMBIENT TEMPERATURE IN °C

DERATING

0

20

40

60

80

100

120

- 65 - 50

- 25

MARKING

- Per MIL-PRF-55182