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Bourns MFRX135722 PTC Resettable Fuse

Bourns MF-RX135/72 series PTC resettable fuses provide resettable circuit protection for low voltage power supplies up to 72V. These fuses are designed for applications such as security and fire alarm systems, loudspeakers, and power transformers. They feature a cured, flame retardant epoxy polymer insulating material meeting UL 94 V-0 requirements and are RoHS compliant and halogen free. Available in various current ratings and package options, these fuses offer a reliable and convenient solution for overcurrent protection.

Authorized Distributors
Source:Newark
Part No:MF-RX135/72-2
Stock:2920
Inv Date:05-28-2026
Price: Unit price: $0.521
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Source:DigiKey
Part No:MF-RX135/72-2
Stock:687
Inv Date:05-28-2026
Price: Unit price: $0.53
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Part No:MF-RX135/72-2
Stock:10358
Inv Date:05-29-2026
Price: Unit price: $0.44
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Part No:MF-RX135/72-2
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.64
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Part No:MF-RX135/72-2
Stock:11120
Inv Date:05-28-2026
Price: Unit price: $0.516
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Part No:MF-RX135/72-2
Stock:11120
Inv Date:05-28-2026
Price: Unit price: $0.516
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Source:Arrow EU
Part No:MF-RX135/72-2
Stock:6000
Inv Date:05-29-2026
Price: N/A
Buy/RFQ:
Part No:MF-RX135/72-2
Stock:91
Inv Date:05-29-2026
Price: N/A
Buy/RFQ:

Bourns MFRX135722 PTC Resettable Fuse Specifications:

  • V max. (Volts): 72
  • I max. (Amps): 40
  • Ihold (Amperes): 1.35
  • Itrip (Amperes): 2.70
  • Initial Resistance (Ohms): 0.12
  • 1 Hour (R1) Post-Trip Resistance (Ohms): 0.30
  • Max. Time To Trip (Seconds): 6.75
  • Tripped Power Dissipation (Watts): 1.70
  • Operating/Storage Temperature: -40 °C to +85 °C
  • Device Surface Temperature in Tripped State: ≤ 125 °C

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Frequently Asked Questions

Where can I buy Bourns MFRX135722?

You can click on the BUY or RFQ button to purchase MFRX135722 from an authorized Bourns distributor.

How do I troubleshoot issues or seek technical support for part MFRX135722?

You can download the MFRX135722 datasheet or visit the Bourns website for support.

Who is the manufacturer of MFRX135722?

Bourns

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