RH0253R300FC02 - Vishay [Dale]

www.vishay.com For technical questions, contact: ww2bresistors@vishay.com Document Number: 30201

166 Revision: 11-Jul-07

RH, NH

Vishay Dale

Wirewound Resistors, Military, MIL-PRF-18546 Qualified,

Type RE, Aluminum Housed, Chassis Mount

FEATURES

•Molded construction for total environmental

protection

•Complete welded construction

•Meets applicable requirements of

MIL-PRF-18546

•Available in non-inductive styles (type NH) with

Aryton-Perry winding for lowest reactive

components

•Mounts on chassis to utilize heat-sink effect

•Excellent stability in operation (< 1 % change in resistance)

Note: Figures in parentheses on RH-5 and RH-10 indicate wattage printed on parts, new construction allows these resistors to be rated at

higher wattage but will only be printed with the higher wattage on customer request.

* Pb containing terminations are not RoHS compliant, exemptions may apply

Available

Pb-free

RoHS*

COMPLIANT

STANDARD ELECTRICAL SPECIFICATIONS

GLOBAL

MODEL HISTORICAL

MODEL

MIL-PRF-

18546

TYPE

POWER RATING

25 °C

RESISTANCE RANGE

MIL. RANGE SHOWN IN BOLD FACE

WEIGHT

(Typical)

DALE MILITARY ± 0.05 %, ± 0.1 % ± 0.25 % ± 0.5 % ± 1 %, ± 2 %, ± 5 %

RH005 RH-5

RE60G

7.5 (5)

0.5 - 6.75K

-0.1 - 8.6K

-0.05 - 8.6K

-0.02 - 24.5K

0.10 - 3.32K

NH005 NH-5

RE60N

7.5 (5)

0.5 - 2.32K

-0.1 - 3.27K

-0.05 - 3.27K

-0.05 - 12.75K

1.0 - 1.65K

3.3

RH010 RH-10

RE65G

12.5 (10)

0.5 - 12.7K

-0.1 - 16.69K

-0.05 - 16.69K

-0.01 - 47.1K

0.10 - 5.62K

NH010 NH-10

RE65N

12.5 (10)

0.5 - 4.45K

-0.1 - 5.54K

-0.05 - 5.54K

-0.05 - 23.5K

1.0 - 2.8K

8.8

RH025 RH-25

RE70G

0.5 - 25.7K

-0.1 - 32.99K

-0.05 - 32.99K

-0.01 - 95.2K

0.10 - 12.1K

NH025 NH-25

RE70N

0.5 - 9.09K

-0.1 - 12.8K

-0.05 - 12.8K

-0.05 - 47.6K

1.0 - 6.04K

16.5

RH050 RH-50

RE75G

0.5 - 73.4K

-0.1 - 96K

-0.05 - 96K

-0.01 - 273K

0 .10 - 39.2K

NH050 NH-50

RE75N

0.5 - 26K

-0.1 - 36.7K

-0.05 - 36.7K

-0.05 - 136K

1.0 - 19.6K

RH100 RH-100

RE77G

100

0.5 - 90K

-0.1 - 90K

-0.05 - 90K

0.05 - 29.4K

350

NH100 NH-100

RE77N

100

0.5 - 37.5K

-0.1 - 37.5K

-0.05 - 37.5K

1.0 - 14.7K

385

RH250 RH-250

RE80G

250

120

0.5 - 116K

-0.1 - 116K

-0.05 - 116K

0.10 - 35.7K

630

NH250 NH-250

RE80N

250

120

0.5 - 48.5K

-0.1 - 48.5K

-0.05 - 48.5K

1.0 - 17.4K

690

GLOBAL PART NUMBER INFORMATION

New Global Part Numbering: RH0054R125FC02 (preferred part number format)

GLOBAL MODEL RESISTANCE

VALUE

TOLERANCE

CODE PACKAGING SPECIAL

RH005

(See “Standard

Electrical

Specifications”

table above for

additional P/N’s)

L = Milliohm

R = Decimal

K = Thousand

8L000 = 0.008 Ω

15R00 = 15 Ω

A = 0.05 %

B = 0.1 %

C = 0.25 %

D = 0.5 %

F = 1.0 %

E02 = Lead (Pb)-free, Card Pack (RH005 - RH050)

E01 = Lead (Pb)-free, Skin Pack (RH100 & RH250)

Lead (Pb)-free is not available on RE military type

(Dash Number)

(up to 3 digits)

From 1 - 999

as applicable

C02 = Tin/Lead, Card Pack (RH005 - RH050)

J01 = Tin/Lead, Skin Pack (RH100 & RH250)

Historical Part Number example: RH-5 4.125 Ω1 % C02 (will continue to be accepted)

RH-5 4.125 Ω1 % C02

HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING

H0054R125RFC0 2

Document Number: 30201 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com

Revision: 11-Jul-07 167

RH, NH

Wirewound Resistors, Military, MIL-PRF-18546 Qualified,

Type RE, Aluminum Housed, Chassis Mount Vishay Dale

DIMENSIONS

RH-5, -10, -25, -50

NH-5, -10, -25, -50

MODEL

DIMENSIONS in millimeters [inches]

DEFGHJKLMNP

RH-5

NH-5

11.28

± 0.127

[0.444

± 0.005]

12.45

± 0.127

[0.490

± 0.005]

15.24

± 0.7871

[0.600

± 0.03]

28.58

± 1.57

[1.125

± 0.062]

8.48

± 0.381

[0.334

± 0.015]

16.41

± 0.381

[0.646

± 0.015]

8.13

± 0.381

[0.320

± 0.015]

1.65

± 0.254

[0.065

± 0.010]

3.38

± 0.254

[0.133

± 0.010]

1.98

± 0.254

[0.078

± 0.010]

2.36

± 0.127

[0.093

± 0.005]

1.98

± 0.381

[0.078

± 0.015]

1.27

± 0.127

[0.050

± 0.005]

6.76

± 1.57

[0.266

± 0.062]

RH-10

NH-10

14.27

± 0.127

[0.562

± 0.005]

15.88

± 0.127

[0.625

± 0.005]

19.05

± 0.787

[0.750

± 0.031]

34.93

± 1.57

[1.375

± 0.062]

10.67

± 0.381

[0.420

± 0.015]

20.32

± 0.381

[0.800

± 0.015]

9.91

± 0.381

[0.390

± 0.015]

1.91

± 0.254

[0.075

± 0.010]

4.19

± 0.254

[0.165

± 0.010]

2.36

± 0.254

[0.093

± 0.010]

2.39

± 0.127

[0.094

± 0.005]

2.59

± 0.381

[0.102

± 0.015]

2.16

± 0.127

[0.085

± 0.005]

7.92

± 1.57

[0.312

± 0.062]

RH-25

NH-25

18.26

± 0.127

[0.719

± 0.005]

19.84

± 0.127

[0.781

± 0.005]

26.97

± 0.787

[1.062

± 0.031]

49.23

± 1.57

[1.938

± 0.062]

13.97

± .381

[0.550

± 0.015]

27.43

± 0.381

[1.080

± 0.015]

13.87

± 0.381

[0.546

± 0.015]

1.91

± 0.254

[0.075

± 0.010]

5.87

± 0.254

[0.231

± 0.010]

4.37

± 0.254

[0.172

± 0.010]

3.18

± 0.127

[0.125

± 0.005]

2.92

± 0.381

[0.115

± 0.015]

2.16

± 0.127

[0.085

± 0.005]

11.13

± 1.57

[0.438

± 0.062]

RH-50

NH-50

39.67

± 0.127

[1.562

± 0.005]

21.44

± 0.127

[0.844

± 0.005]

49.99

± 0.787

[1.968

± 0.031]

70.64

± 1.57

[2.781

± 0.062]

16.00

± 0.381

[0.630

± 0.015]

28.96

± 0.381

[1.140

± 0.015]

15.49

± 0.381

[0.610

± 0.015]

2.24

± 0.254

[0.088

± 0.010]

6.60

± 0.254

[0.260

± 0.010]

4.98

± 0.254

[0.196

± 0.010]

3.18

± 0.127

[0.125

± 0.005]

2.72

± 0.381

[0.107

± 0.015]

2.16

± 0.127

[0.085

± 0.005]

11.13

± 1.57

[0.438

± 0.062]

RH-250, NH-250

RH-100, NH-100

57.15 ± 0.254

[2.25 ± 0.010]

25.12 ± 0.787

[0.989 ± 0.031]

71.42 ± 0.787

[2.812 ± 0.031]

88.90 ± 0.787

[3.50 ± 0.031]

Nickel Plated

Brass Nut

Stainless Steel Stud

28.58 ± 0.787

[1.125 ± 0.031]

4.78 ± 0.254

[0.188 ± 0.010]

Dia. Typ.

12 - 24

UNC-2A

Thd. Typ.

69.85 ± 0.254

[2.75 ± 0.010]

9.52 ± 0.787

[0.375 ± 0.031]

139.14 ± 2.36

[5.478 ± 0.093]

44.45

± 0.787

[1.75 ± 0.031]

55.58

± 0.787

[2.188 ± 0.031]

53.98

± 0.787

[2.125 ± 0.031]

6.35

± 0.787

[0.250 ± 0.031

Typ.]

114.30 ± 0.787

[4.50 ± 0.031]

63.50 ± 0.254

[2.50 ± 0.010]

177.80 ± 2.36 [7.0 ± 0.093]

22.23 ± 0.254

[0.875 ± 0.010]

76.20 ± 0.254

[3.0 ± 0.010]

98.42 ± 0.254

[3.875 ± 0.010]

19.56

± 0.381

[0.770 ± 0.015]

4.78

± 0.787

[0.188 ± 0.031]

Typ.

46.02

± 0.787

[1.812 ± 0.031]

7.92 ± 0.787

[0.312 ± 0.031]

31.75 ± 1.575

[1.25 ± 0.062]

31.75 ± 1.575

[1.25 ± 0.062]

1/4 - 20

UNC-2A Thd. Typ.

24.26

± 0.381

[0.955 ± 0.015]

76.20 ± 0.787

[3.0 ± 0.031]

Nickel Plated

Brass Nut

Stainless Steel Stud

4.78 ± 0.254

[0.188 ± 0.010]

Dia. Typ.

www.vishay.com For technical questions, contact: ww2bresistors@vishay.com Document Number: 30201

168 Revision: 11-Jul-07

RH, NH

Vishay Dale Wirewound Resistors, Military, MIL-PRF-18546 Qualified,

Type RE, Aluminum Housed, Chassis Mount

POWER RATING

Vishay RH resistor wattage ratings are based on mounting to the following heat sink:

RH-5 and RH-10: 4" × 6" × 2" × 0.040" thick aluminum chassis (129 sq. in. surface area)

RH-25: 5" × 7" × 2" × 0.040" thick aluminum chassis (167 sq. in. surface area)

RH-50: 12" × 12" × 0.059" thick aluminum panel (291 sq. in. surface area)

RH-100 and RH-250: 12" × 12" × 0.125" thick aluminum panel (294 sq. in. surface area)

AMBIENT TEMPERATURE DERATING

Derating is required for ambient temperatures above 25 °C, see the following graph.

Curves A, B, C apply to operation of unmounted resistors. Curve D applies to all types when mounted to specified heat sink.

A = RH-5 and RH-10 size resistor, unmounted

B = RH-25 size resistor, unmounted

C = RH-50, RH-100 and RH-250 size resistor, unmounted

D = All types mounted to recommended aluminum heat sink

REDUCED HEAT SINK DERATING:

Derating is also required when recommended heat sink

area is reduced.

A = RH-5 and RH-10 size resistor

B = RH-25 size resistor

C = RH-50, RH-100 and RH-250 size resistor

TECHNICAL SPECIFICATIONS

PARAMETER UNIT RH RESISTOR CHARACTERISTICS

Temperature Coefficient ppm/°C ± 100 for 0.1 Ω to 0.99 Ω, ± 50 for 1 Ω to 9.9 Ω, ± 20 for 10 Ω and above

Dielectric Withstanding Voltage VAC 1000 for RH/5, RH-10 and RH/25, 2000 for RH/50, 4500 for RH/100 and RH/250

Short Time Overload - 5 × rated power for 5 seconds

Maximum Working Voltage V (P x R)1/2

Insulation Resistance Ω10 000 MΩ minimum dry, 1000 MΩ minimum after moisture test

Terminal Strength lb 5 minimum for RH-5 and RH-10, 10 minimum for all others

Solderability - MIL-PRF-18546 Type - Meets requirements of ANSI J-STD-002

Operating Temperature Range °C - 55/+ 250

% NI R

Derating

- 55 - 50 0 50 150 250

AMBIENT TEMPERATURE IN °C

120

100

0020406080100

% OF RECOMMENDED HEAT SINK AREA

% NI REWOP DETAR

Heat Sink Derating

Document Number: 30201 For technical questions, contact: ww2bresistors@vishay.com www.vishay.com

Revision: 11-Jul-07 169

RH, NH

Wirewound Resistors, Military, MIL-PRF-18546 Qualified,

Type RE, Aluminum Housed, Chassis Mount Vishay Dale

MATERIAL SPECIFICATIONS

Element: Copper-nickel alloy or nickel-chrome alloy,

depending on resistance value

Core: Ceramic, steatite or alumina, depending on physical

size

Encapsulant: Silicone molded construction

Housing: Aluminum with hard anodic coating

End Caps: Stainless steel

Standard Terminals: For RH-5 through RH-50 size terminal

finish - Tin/lead is 60/40 Sn/Pb w/Nickel underplate & Lead

(Pb)-free is Ni/Pd/Au, finish is on copper clad steel core

terminal. For RH-100 & RH-250 terminals are threaded

stainless steel.

Note: Military (RE) parts are only available with tin/lead finish

Part Marking: DALE, Model, Wattage, Value, Tolerance,

Date Code

NH NON-INDUCTIVE

Models of equivalent physical and electrical specifications

are available with non-inductive (Aryton-Perry) winding.

They are identified by substituting the letter N for R in the

model number (NH-5, for example).

SPECIAL MODIFICATIONS

A number of special modifications to the aluminum housed

resistor style are available upon request. Special

modifications include:

•Terminal configurations and materials

•Resistance values and tolerances

•Low resistance temperature coefficient (RTC)

•Housing configuration

•Threaded mounting holes

•Preconditioning and other additional testing

APPLICABLE MIL SPECIFICATIONS

MIL-PRF-18546 is the military specification covering

aluminum housed, chassis mount, power resistors. VISHAY

RH and NH resistors are listed as qualified on the

MIL-PRF-18546 QPL.

PERFORMANCE

TEST CONDITIONS OF TEST TEST LIMITS

Thermal Shock Rated power applied until thermally stable, then a minimum of 15 minutes at - 55 °C ± (0.5 % + 0.05 Ω) ΔR

Short Time Overload 5 × rated power for 5 seconds ± (0.5 % + 0.05 Ω) ΔR

Dielectric Withstanding Voltage 1000 Vrms for RH-5, RH-10 and RH-25; 2000 Vrms for RH-50

4500 Vrms for RH-100 and RH-250; duration one minute ± (0.2 % + 0.05 Ω) ΔR

Temperature 250 °C for 2 hours ± (0.5 % + 0.05 Ω) ΔR

Moisture Resistance MIL-STD-202 Method 106, 7b not applicable ± (1.0 % + 0.05 Ω) ΔR

Shock, Specified Pulse MIL-STD-202 Method 213, 100 g's for 6 ms, 10 shocks ± (0.2 % + 0.05 Ω) ΔR

Vibration, High Frequency Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 hours each ± (0.2 % + 0.05 Ω) ΔR

Load Life 1000 hours at rated power, + 25 °C, 1.5 hours “ON”, 0.5 hours “OFF” ± (1.0 % + 0.05 Ω) ΔR

Terminal Strength 30 second, 5 pound pull test for RH-5 and RH-10, 10 pound pull test for other sizes,

torque test - 24 pound inch for RH-100 and 32 pound inch for RH-250 ± (0.2 % + 0.05 Ω) ΔR

Document Number: 91000 www.vishay.com

Revision: 18-Jul-08 1

Disclaimer

Legal Disclaimer Notice

Vishay

All product specifications and data are subject to change without notice.

Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf

(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein

or in any other disclosure relating to any product.

Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any

information provided herein to the maximum extent permitted by law. The product specifications do not expand or

otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed

therein, which apply to these products.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this

document or by any conduct of Vishay.

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless

otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such

applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting

from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding

products designed for such applications.

Product names and markings noted herein may be trademarks of their respective owners.