BDS4B2501R0K - 

With less than 40 nH inductance and a 250 W or 400 W power rating (100°C/70°C heatsink) in a 67 mm × 60 mm casing, the BDS250/BDS400 offers high power density over a wide range of ohmic values (0.47 Ohms to 1 Megohms) and benefits from 10 years experience in the field. Available in 5 resistor configurations with 2 or 4 easy to connect terminals, the resistors are made from quality materials for optimum reliability and stability with very low partial discharge.
Tyco can test resistors to conform to relevant customer specifications, and will advise on the use of resistors for pulse energy and high voltage applications (HV designs available). Resistors with 1% tolerance, alternative terminations or flying leads are available, and custom designs are welcome. This product is available via distribution.

Features:

400 W in a 40.2 cm² Footprint; Gives an Impressive Power Density of 10 W/cm²

Virtually Inductance-Free; Inductance <40 nH

Wide Resistance Range: 0.47Ω to 1 MΩ

Coupled with 1% Tolerance Gives Ultimate Design Flexibility

Multiple Terminal Configurations and Multi-Resistor Packages; The Space Saving Solution

Partial Discharge <10 pC at 7.5 kV; Guaranteeing Quality,Reliability and Long Life