RMB105931R0FS00 - Vishay Presicion Group

Molded Precision Wirewound Resistors

Axial Leads

www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 50010

44 Revision: 20-May-09

RMB, RMBS

Vishay Sfernice

FEATURES

•0.75 W to 3 W at 25 °C

•NF C 83-210

•CECC 40201-005

•Low temperature coefficient ≤ ± 50 ppm/°C

•Low ohmic values 15 mΩ available

•Excellent behavior against humidity

•Electrical insulation

•Mechanical strength

•Accurate sizes

•Termination = Sn/Ag/Cu or pure matte tin according to the

ohmic value

•Compliant to RoHS directive 2002/95/EC

High stability and low temperature coefficient are the main features of the precision wirewound resistors type RMB RMBS models

just as maintenance parts. Their performances can be compared with those of the best film resistors but they have in addition a

greater power rating. RMBS styles meet the more severe requirements of NF C 83-210 (all RMBS styles are approved) and

characteristic U of MIL-R-26 E (approximate size of RW 70 and 79 resistors) specifications. The two models RMB and RMBS

have a similar construction. RMBS are submitted, in addition to a process which further increases the stability. On request,

non-inductive resistors are available under the reference RMB NI.

DIMENSIONS in millimeters

Undergoes European Quality Insurance System (CECC)

25 min.25 min.

Ø B

Ø E

SERIES

AND STYLE

RMB 0.75

RMBS 0.5

RMB 1.5

RMBS 1

RMB 3

RMBS 2

A max. 7 10.2 16.2

Ø B max. 2.5 4 6.4

E ± 0.1 0.6 0.6 0.8

Weight in g 0.3 0.7 1.5

TECHNICAL SPECIFICATIONS

VISHAY SFERNICE SERIES AND STYLE RMB 0.75 RMB 1.5 RMB 3 RMBS 0.5 RMBS 1 RMBS 2

NF C 83-210 - - - RP1 RP2 RP3

CECC 40201-005 --- A BC

Power

Rating

at 25 °C 0.75 W 1.5 W 3 W 0.5 W 1 W 2 W

at 70 °C 0.6 W 1.2 W 2.4 W 0.4 W 0.8 W 1.6 W

Ohmic Range

in Relation

to Tolerance

± 5 % E24 0.1

2 k

0.1

6.81 k

0.051

13 k

0.1

2 k

0.1

6.81 k

0.015

13 k

± 2 % E48 0.1

2 k

0.1

6.81 k

0.08

12.3 k

0.1

2 k

0.1

6.81 k

0.078

12.4 k

± 1 % E96 0.1

2 k

0.1

6.81 k

0.1

12.4 k

0.1

2 k

0.1

6.81 k

0.1

12.4 k

± 0.5 % E96 0.4

2 k

0.4

6.81 k

0.3

12.4 k

0.4

2 k

0.4

6.81 k

0.3

12.4 k

± 0.1 % Please consult

VISHAY SFERNICE

Qualified Ohmic Range

NF C 83-210 ---

174

590

1.3 k

Limiting Element Voltage Not applicable 120 V 200 V Not applicable 120 V 200 V

Critical Resistance Out of nominal ohmic range

RMB, RMBS

Molded Precision Wirewound Resistors

Axial Leads Vishay Sfernice

Document Number: 50010 For technical questions, contact: sfer@vishay.com www.vishay.com

Revision: 20-May-09 45

STABILITY AND POWER RATING

Stability changes slightly according to power rating and ambient temperature. This fact is specially important for users needing

a life drift lower than the initial resistance tolerance. Typical drifts, after 2000 h life test made under the 90’/30’ conditions and at

a 25 °C ambient temperature are:

PERFORMANCE

TESTS CONDITIONS REQUIREMENTS TYPICAL VALUES AND DRIFTS

MIL-R-26 E NF C 83-210 RMB RMBS

Dielectric W/s Voltage 500 VRMS ± (0.1 % + 0.05 Ω) - ± (0.05 % + 0.01 Ω) ± (0.05 % + 0.01 Ω)

Short Time Overload 5 Pn at 25 °C/5 s ± (0.2 % + 0.05 Ω) ± 0.25 % + 0.05 Ω± (0.1 % + 0.01 Ω) ± (0.05 % + 0.01 Ω)

Climatic Sequence

NF C 83-210

- 55 °C/+ 200 °C

5 cycles

-± 0.25 % + 005 Ω

Insulation R > 100 MΩ

± (0.1 % + 0.01 Ω)

> 104 MΩ

± (0.05 % + 0.01 Ω)

> 104 MΩ

Humidity (Steady State) NF C 83-210

56 days 95 % RH -± 0.25 % + 0.05 Ω

Insulation R > 100 MΩ

± (0.1 % + 0.01 Ω)

> 104 MΩ

± (0.05 % + 0.01 Ω)

> 104 MΩ

Thermal Shock

Load at 100 % P followed

by cold temp. exposure

at - 55 °C

± (0.2 % + 0.05 Ω) - ± (0.2 % + 0.01 Ω) (0.1 % + 0.01 Ω)

Vibration

MIL-STD-202

Method 204 - Test D: 20 g

10/2000 Hz

± (0.2 % + 0.05 Ω) ± 0.25 % + 0.05 Ω± (0.01 % + 0.01 Ω) ± (0.01 % + 0.01 Ω)

Load Life MIL-STD-202

Method 108 Pr 2000 h ± (0.5 % + 0.05 Ω)± 0.25 % + 0.05 Ω

1000 h at 25 °C ± (1 % + 0.01 Ω) ± (0.15 % + 0.01 Ω)

Moisture Resistance MIL-STD-202

Method 106

± (0.2 % + 0.05 Ω)

Insulation resistance

> 100 MΩ

-± (0.1 % + 0.01 Ω)

> 103 MΩ

± (0.05 % + 0.01 Ω)

> 103 MΩ

High Temperature 1000 h at + 200 °C ± (0.5 % + 0.05 Ω)± 0.5 % + 0.05 Ω

Insulation R > 1 GΩ± 1 % ± 0.3 %

Shock MIL-STD-202

100 g Method 205 Test C ± (0.1 % + 0.05 Ω) ± 0.25 % + 0.05 Ω ± 0.05 % ± 0.05 %

TEMPERATURE COEFFICIENT IN THE RANGE - 55 °C TO + 200 °C

OHMIC RANGE REQUIREMENTS

NF C 83-210 MIL-R-26E

TYPICAL VALUES

SFERNICE

MIL

Rn < 1

≤

± 100 ppm/°C ± 50 ppm/°C

≤

Rn < 10

≤

± 50 ppm/°C

≥

≤

± 25 ppm/°C + 0 °C to - 20 ppm/°C

MODEL

STYLE

RMBS

0.5

RMBS

2R %/R % MODEL

STYLE

RMB

0.75

RMB

1.5

RMB

3R %/R %

Pn 0.5 W 1 W 2 W 0.15 % P max. 1 W 2 W 3.5 W 1 %

1/2 Pn 0.25 W 0.5 W 1 W 0.075 % Pn 0.75 W 1.5 W 3 W 0.5 %

1/3 Pn 0.4 W 0.75 W 1.5 W 0.3 %

www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 50010

46 Revision: 20-May-09

RMB, RMBS

Vishay Sfernice Molded Precision Wirewound Resistors

Axial Leads

POWER RATING CHART

TEMPERATURE RISE

MARKING

SFERNICE trademark, model, style, CECC style (if applicable) nominal resistance (in Ω), tolerance (in %), manufacturing date.

ORDERING INFORMATION

RMB 105 R5000 J S00

RMBS 05 22R00 J S14

MODEL STYLE OHMIC VALUE TOLERANCE PACKAGING

GLOBAL PART NUMBER INFORMATION

GLOBAL

MODEL SIZE OPTION OHMIC VALUE TOLERANCE PACKAGING SPECIAL

RMB

RMBS

RMB:

075

105

300

RMBS:

N = Non

inductive

winding

The first four digits are

significant figures and the

last digit specifies the

number of zeros to follow.

R designates decimal point.

300R0 = 300 Ω

680R0 = 680 Ω

20302 = 20.3 kΩ

88R88 = 88.88 Ω

...

F = 1 %

J = 5 %

Standard Packaging:

RMB:

Size 075 and 105: S14 = Bag, 100 pieces

Size 300: S09 = Bag, 50 pieces

RMBS:

Size 05 and 10: S14 = Bag, 100 pieces

Size 20: S09 = Bag, 50 pieces

Other packagings available

As applicable

Ex = MEX

AMBIENT TEMPERATURE IN DEGREES CELSIUS

REWOP DETAR %

125

100

0 50 100 150 200 250 275 300 350

RATED POWER IN WATTS

N I E

R U T A R E P M E T

T O

P S T O

H ° C

250

200

150

100

0 1 2 3

M R B 5 7

0 M R

0 S B .

M R M R

5 . 1 1 S B

M R

B M R

05300R0 SB 1M J00R

Document Number: 91000 www.vishay.com

Revision: 18-Jul-08 1

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