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TTElectronics - Welwyn MFR43K9FI Metal Film Resistor

The Welwyn MFR series resistors are axial leaded, professional-grade metal film resistors utilizing thin film technology. They feature a resistance range from 1 ohm to 1 megohm, available in E24 and E96 decade values. The resistance element is a precisely controlled thin film of metal alloy sputtered onto a high-purity ceramic core, protected by a moisture-resistant, high dielectric strength coating that maintains clear terminations. These resistors are approved to BS CECC 40101-803 and 019 standards, and are available in 0.5% and 1% tolerance versions. They have a temperature coefficient of ±50 ppm/°C, a power rating of 500mW, and operate within a temperature range of -55°C to 155°C. Note: Due to market demand, lead times may be extended, and delivery dates may fluctuate. This product is exempt from discounts.

Authorized Distributors
Source:Newark
Part No:MFR4-3K9FI
Stock:4852
Inv Date:06-09-2026
Price: Unit price: $0.492
Buy/RFQ:
Part No:MFR4-3K9FI
Stock:13746
Inv Date:06-10-2026
Price: Unit price: $0.48
Buy/RFQ:

TTElectronics - Welwyn MFR43K9FI Metal Film Resistor Specifications:

  • Resistance range: 1Ω to 1MΩ
  • Tolerance: 0.5% and 1%
  • Temperature coefficient: ±50 ppm/°C
  • Power rating: 0.5W (500mW)
  • Operating temperature: -55°C to 155°C
  • Material: Metal alloy sputtered on ceramic core
  • Protection: Moisture-resistant, high dielectric coating
  • Terminations: Hot tin dipped copper wire
  • Dimensions: Length up to 37 mm, diameter 20 mm (varies by type)
  • Voltage: 250V to 350V depending on series
  • Compliance: BS CECC 40101-803 and 019 standards

Buy the Buy TT Electronics MFR Series Resistor Part Number MFR43K9FI Online

Purchase TT Electronics MFR Series metal film resistors online for high accuracy and reliable performance. These axial resistors feature precise resistance control, low temperature coefficient, and excellent stability. Perfect for professional and industrial applications, they are available in various resistance values, tolerances, and power ratings. Compatible with automated assembly, these resistors meet strict standards, ensuring long-term reliability in demanding environments. Order now to enhance your electronic projects with high-quality resistors that provide consistent results and quick delivery.

Get TT Electronics MFR43K9FI today—designed for precision, durability, and high-temperature stability in advanced electronic circuits.

Frequently Asked Questions

Where can I buy TTElectronics - Welwyn MFR43K9FI?

You can click on the BUY or RFQ button to purchase MFR43K9FI from an authorized TTElectronics - Welwyn distributor.

How do I troubleshoot issues or seek technical support for part MFR43K9FI?

You can download the MFR43K9FI datasheet or visit the TTElectronics - Welwyn website for support.

Who is the manufacturer of MFR43K9FI?

TTElectronics - Welwyn

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