Vishay Dale Wirewound Resistors, Industrial Power, Aluminum Housed, Chassis Mount
These industrial power wirewound resistors are designed for chassis mounting, utilizing the heat-sink effect for efficient thermal management. Featuring a molded construction for total environmental protection and complete welded construction, they offer excellent stability in operation with less than 1% change in resistance. Available in standard (RH) and non-inductive (NH) styles, they meet applicable requirements of MIL-PRF-18546 and are suitable for demanding industrial applications.
Product Attributes
- Brand: Vishay Dale
- Construction: Molded, Welded
- Certifications: Meets applicable requirements of MIL-PRF-18546
- Non-Inductive Option: Available (Type NH) with Ayrton-Perry winding
- Mounting: Chassis Mount
- Material Compliance: Refer to www.vishay.com/doc?99912 for definitions
Technical Specifications
| Global Model | Historical Model | Power Rating (P25C) W | Resistance Range ( 0.05 %, 0.1 %) | Resistance Range ( 0.25 %) | Resistance Range ( 0.5 %) | Resistance Range ( 1 %, 3 %, 5 %) | Weight (typical) g | Temperature Coefficient ppm/C | Maximum Working Voltage V (P x R)1/2 | Insulation Resistance | Solderability |
| RH005 | RH-5 | 7.5 | 0.5 to 6.75K | 0.1 to 8.6K | 0.05 to 8.6K | 0.02 to 24.5K | 3 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| NH005 | NH-5 | 7.5 | 0.5 to 2.32K | 0.1 to 3.27K | 0.05 to 3.27K | 0.05 to 12.75K | 3 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| RH010 | RH-10 | 12.5 | 0.5 to 12.7K | 0.1 to 16.69K | 0.05 to 16.69K | 0.01 to 47.1K | 5 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| NH010 | NH-10 | 12.5 | 0.5 to 4.45K | 0.1 to 5.54K | 0.05 to 5.54K | 0.05 to 23.5K | 5 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| RH025 | RH-25 | 25 | 0.5 to 25.7K | 0.1 to 32.99K | 0.05 to 32.99K | 0.01 to 95.2K | 12 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| NH025 | NH-25 | 25 | 0.5 to 9.09K | 0.1 to 12.8K | 0.05 to 12.8K | 0.05 to 47.6K | 12 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| RH050 | RH-50 | 50 | 0.5 to 73.4K | 0.1 to 96K | 0.05 to 96K | 0.01 to 273K | 28 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| NH050 | NH-50 | 50 | 0.5 to 26K | 0.1 to 36.7K | 0.05 to 36.7K | 0.05 to 136K | 28 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| RH100 | RH-100 | 100 | 0.5 to 90K | 0.1 to 90K | 0.05 to 90K | 0.05 to 90K | 353 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| NH100 | NH-100 | 100 | 0.5 to 37.5K | 0.1 to 37.5K | 0.05 to 37.5K | 0.05 to 37.5K | 353 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| RH250 | RH-250 | 250 | 0.5 to 116K | 0.1 to 116K | 0.05 to 116K | 0.05 to 116K | 637 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
| NH250 | NH-250 | 250 | 0.5 to 48.5K | 0.1 to 48.5K | 0.05 to 48.5K | 0.05 to 48.5K | 637 | 20 for 10 and above; 50 for 1 to 9.9 , 100 for 0.1 to 0.99 | (P x R)1/2 | 10 000 M minimum dry, 1000 M minimum after moisture test | Meets requirements of ANSI J-STD-002 |
Dimensions
| Global Model | A [mm] | B [mm] | C [mm] | D [mm] | E [mm] | F [mm] | G [mm] | H [mm] | J [mm] | K [mm] | L [mm] | M [mm] | N [mm] | P [mm] |
| RH005 NH005 | 11.28 0.127 | 12.45 0.127 | 15.24 0.787 | 28.58 1.57 | 8.48 0.381 | 16.41 0.381 | 8.13 0.381 | 1.65 0.254 | 3.38 0.254 | 1.98 0.254 | 2.36 0.127 | 1.98 0.381 | 1.27 0.127 | 6.76 1.57 |
| RH010 NH010 | 14.27 0.127 | 15.88 0.127 | 19.05 0.787 | 34.93 1.57 | 10.67 0.381 | 20.32 0.381 | 9.91 0.381 | 1.91 0.254 | 4.19 0.254 | 2.36 0.254 | 2.39 0.127 | 2.59 0.381 | 2.16 0.127 | 7.92 1.57 |
| RH025 NH025 | 18.26 0.127 | 19.84 0.127 | 26.97 0.787 | 49.23 1.57 | 13.97 0.381 | 27.43 0.381 | 13.87 0.381 | 1.91 0.254 | 5.87 0.254 | 4.37 0.254 | 3.18 0.127 | 2.92 0.381 | 2.16 0.127 | 11.13 1.57 |
| RH050 NH050 | 39.67 0.127 | 21.44 0.127 | 49.99 0.787 | 70.64 1.57 | 16.00 0.381 | 28.96 0.381 | 15.49 0.381 | 2.24 0.254 | 6.60 0.254 | 4.98 0.254 | 3.18 0.127 | 2.72 0.381 | 2.16 0.127 | 11.13 1.57 |
| RH100 NH100 | 57.15 0.254 | 25.12 0.787 | 71.42 0.787 | 88.90 0.787 | 28.58 0.787 | 4.78 0.254 | 25.12 0.787 | 2.36 0.254 | 7.92 0.787 | 4.78 0.254 | 3.18 0.127 | 7.92 0.787 | 2.16 0.127 | 76.20 0.787 |
| RH250 NH250 | 57.15 0.254 | 25.12 0.787 | 71.42 0.787 | 88.90 0.787 | 28.58 0.787 | 4.78 0.254 | 25.12 0.787 | 2.36 0.254 | 7.92 0.787 | 4.78 0.254 | 3.18 0.127 | 7.92 0.787 | 2.16 0.127 | 76.20 0.787 |
Power Rating and Derating
Vishay RH resistor wattage ratings are based on mounting to specified heat sinks. Derating is required for ambient temperatures above 25 C and when the recommended heat sink area is reduced. Free air power ratings are also provided.
| Global Model | Free Air Power Rating (W at 25 C) |
| RH005 NH005 | 4.5 / 7.5 |
| RH010 NH010 | 12.5 |
| RH025 NH025 | 20 |
| RH050 NH050 | 40 |
| RH100 NH100 | 100 |
| RH250 NH250 | 100 |
2410121714_VISHAY-RH02510R00FE02_C3009712.pdf
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