RH0251R000FE02 Vishay, RH0251R000FE02 Datasheet - Page 3
![RES 1.0 OHM 1%25W ALUM HOUSED WW](/photos/9/62/96221/rh_series_sml.jpg)
RH0251R000FE02
Manufacturer Part Number
RH0251R000FE02
Description
RES 1.0 OHM 1%25W ALUM HOUSED WW
Manufacturer
Vishay
Series
RHr
Specifications of RH0251R000FE02
Resistance
1 Ohms
Power Rating
25 Watts
Temperature Coefficient
±50ppm/°C
Resistance (ohms)
1
Power (watts)
25W
Composition
Wirewound
Tolerance
±1%
Coating, Housing Type
Aluminum Housed
Mounting Feature
Flanges
Size / Dimension
1.062" L x 1.080" W (26.97mm x 27.43mm)
Height
0.546" (13.87mm)
Lead Style
Solder Lugs
Package / Case
Axial, Box
Operating Temperature Range
- 55 C to + 250 C
Dimensions
27.43 mm W x 26.97 mm L x 13.87 mm H
Product
Power Resistors Wire Wound Aluminum Housed
Resistance Tolerance
± 1%
Resistor Element Material
Wirewound
Resistor Case Style
Axial Lugs
No. Of Pins
2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
RHRC-1.0
POWER RATING
Vishay RH resistor wattage ratings are based on mounting to the following heat sink:
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 = RH005 and RH010 size resistor, unmounted
B = RH025 size resistor, unmounted
C = RH050, RH100 and RH250 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 = RH005 and RH010 size resistor
B = RH025 size resistor
C = RH050, RH100 and RH250 size resistor
Document Number: 30201
Revision: 02-Mar-11
FREE AIR POWER RATING
GLOBAL
MODEL
W at 25 °C
RH005 and RH010:
RH025:
RH050:
RH100 and RH250:
NH005
RH005
3.75
4" x 6" x 2" x 0.040" thick aluminum chassis (129 sq. in. surface area)
5" x 7" x 2" x 0.040" thick aluminum chassis (167 sq. in. surface area)
12" x 12" x 0.059" thick aluminum panel (291 sq. in. surface area)
12" x 12" x 0.125" thick aluminum panel (294 sq. in. surface area)
120
100
100
80
60
40
20
90
80
70
60
50
40
30
20
10
- 55 - 50
0
0
0
For technical questions, contact:
Wirewound Resistors, Industrial Power,
C
A
B
Aluminum Housed, Chassis Mount
RH010
NH010
A
6.25
B
0
C
20
25
50
40
RH025
NH025
12.5
% OF RECOMMENDED HEAT SINK AREA
ww2bresistors@vishay.com
D
AMBIENT TEMPERATURE IN °C
60
150
RH050
NH050
20
80
250
100
RH100
NH100
40
Vishay Dale
www.vishay.com
RH, NH
RH250
NH250
100
3