MHP20S220F

Overview

The MHP20S220F is a high-power thick film resistor from the Welwyn MHP series, manufactured by TT Electronics. It features a resistance value of 22 ohms with a tolerance of ±1%. The component is rated for a power dissipation of 20W and utilizes a TO-220 package style designed for heatsink mounting. It operates within a temperature range of -55°C to +155°C and has a voltage rating of 350V. The device is RoHS compliant and suitable for through-hole PCB integration.

Feature Summary

• High power handling capability of 20W for demanding applications
• Heatsink mount design via TO-220 package for efficient thermal management
• Precision resistance tolerance of ±1% for accurate circuit performance
• Wide operating temperature range from -55°C to +155°C

Applications

• Industrial power supplies
• Motor control circuits
• Audio amplifier output stages

Procurement Notes

Verify the specific suffix (e.g., F for ±1%, J for ±5%) against the required tolerance. Confirm the TO-220 package compatibility with your heatsinking solution. Check for RoHS compliance status in the latest datasheet. Ensure the 350V rating meets your circuit's peak voltage requirements. Validate the 20W power derating curve for your ambient temperature conditions.

Selection Notes

Select this component when high power dissipation and precise resistance are required in a compact form factor. The TO-220 package allows direct mounting to heatsinks, simplifying thermal design compared to surface-mount alternatives. Consider the 350V voltage rating for medium-voltage applications. Ensure the PCB layout supports the through-hole leads and adequate spacing for high-power operation.

Part Context

The MHP20S series represents Welwyn's high-power thick film resistors, offering robust performance in industrial and automotive environments. These resistors are known for their stability and reliability under high stress conditions. The MHP20S220F specifically provides a 22-ohm value with tight tolerance, fitting into the E24 decade values available in the series.

Replacement Considerations

Direct substitutes may include other 20W, 22-ohm, ±1% TO-220 resistors from manufacturers like Vishay or Yageo. Verify that any replacement matches the 350V rating and -55°C to +155°C temperature range. Ensure the physical dimensions of the TO-220 package are compatible with existing heatsinks and PCB holes.