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Ohmite 81F40R2 Wirewound Resistor
Ohmite’s 81F40R2 resistor is a high-quality conformal axial terminal wirewound resistor, part of the 80 Series. Designed for precision power applications, it boasts an all-welded construction and a silicone-ceramic conformal coating, ensuring exceptional stability and performance under demanding conditions. The resistor’s low temperature coefficient and tight tolerance make it suitable for critical circuits where precision and reliability are paramount. It is ideal for applications requiring high stability and accuracy, such as power supplies, instrumentation, and control systems. The resistor is available in various ohmic values and wattage ratings to meet diverse application requirements.
Ohmite 81F40R2 Wirewound Resistor Specifications:
- Coating: Silicone-ceramic
- Core: Ceramic
- Terminals: Solder-coated copper clad axial
- Derating: Linearly from 100% @ +25°C to 0% @ +275°C
- Tolerance: ±1%
- Power rating: Based on 25°C free air rating
- Maximum ohmic values: See chart
- Overload: Under 5 watts: 5 times rated wattage for 5 seconds. 5 watts and over: 10 times rated wattage for 5 seconds
- Temperature coefficient: Under 1Ω: ±90 ppm/°C, 1 to 9.99Ω: ±50 ppm/°C, 10Ω and over: ±20 ppm/°C
- Dielectric withstanding voltage: 500 VAC: 1 watt rating; 1000 VAC: 2, 3, 5, 7, and 10 watt rating
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Frequently Asked Questions
Where can I buy Ohmite 81F40R2?
You can click on the BUY or RFQ button to purchase 81F40R2 from an authorized Ohmite distributor.
How do I troubleshoot issues or seek technical support for part 81F40R2?
You can download the 81F40R2 datasheet or visit the Ohmite website for support.
Who is the manufacturer of 81F40R2?
Ohmite