Bourns UALH Al-Housed High-Power Wirewound Resistors
Bourns UALH Aluminum-Housed High-Power Wirewound Resistors deliver high stability and reliability under demanding electrical and thermal conditions. These Bourns fixed resistors feature advanced wirewound construction and are protected by a silicone molding compound. The UALH series is enclosed in a rugged aluminum shell to optimize heat dissipation and is ideal for power supply adapters and industrial machinery applications. These wirewound resistors feature a resistance range of 0.5Ω to 22kΩ with a ±5% tolerance and operate over a robust temperature range of -55°C to +275°C. A thin, lightweight body profile delivers a high 100W power rating on a standard heatsink.
Features
- 100W power rating with heatsink
- 0.5Ω to 22kΩ resistance range
- -55°C to +275°C operating temperature range
- RoHS compliant and halogen-free
Applications
- Industrial motor controls
- Industrial power supplies
- High-power machinery
Specifications
- 30W power rating without heat sink
- 1483V maximum working voltage
- 4500V dielectric withstanding voltage
- 14.14A maximum rated current
- ±5% tolerance
- ±350ppm/°C temperature coefficient of resistance (TCR)
Dimensions
Derating Curve
Published: 2026-10-02
| Updated: 2026-10-09