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Bourns PSD227x Riedon™ Thick Film Power Resistors

Bourns PSD227x Riedon™ Thick Film Power Resistors are a former Riedon product with a resistance range of 0.05Ω to 5MΩ. The Bourns PSD227x features resistance tolerances of ±1% and a temperature coefficient of resistance (TCR) of ±50PPM/°C. These high-reliability thick-film power resistors offer a power rating up to 200W and come in a TO-227 (TO-238) housing. Applications include power supplies, motor drives, snubber circuits, test and measurement, capacitor discharging, and current limiting.

Features

  • Formerly a Riedon product
  • 0.05Ω to 5MΩ resistance range
  • ±1% to ±10% resistance tolerance
  • TCR to ±50PPM/°C
  • 200W maximum power rating
  • TO-227 (TO-238) housing
  • High reliability
  • RoHS compliant

Applications

  • Power supplies
  • Motor drives
  • Test and measurement
  • Capacitor discharging
  • Snubber circuits
  • Current limiting

Specifications

  • 100W or 200W power rating
  • 0.35K/W or 0.7K/W thermal resistance
  • 1500VDC dielectric withstanding voltage
  • -40°C to +155°C operating temperature range
  • ≤50nH inductivity

Dimensions

Mechanical Drawing - Bourns PSD227x Riedon™ Thick Film Power Resistors
Published: 2025-12-02 | Updated: 2025-12-08