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Bourns MFRX375722 PTC Resettable Fuse
Bourns MF-RX375/72-2 is a resettable fuse designed to protect low voltage power supplies up to 72V. It utilizes a PTC (Positive Temperature Coefficient) element that increases resistance when an overcurrent or short circuit condition occurs, interrupting the circuit and then returning to a low resistance state once the fault is cleared. The device is constructed with a cured, flame retardant epoxy polymer insulating material meeting UL 94 V-0 requirements and is RoHS compliant. Typical applications include security and fire alarm systems, loudspeakers, and power transformers. Available in bulk packaging, tape and reel, and Ammo-Pak options.
Bourns MFRX375722 PTC Resettable Fuse Specifications:
- V max: 72 Volts
- I max: 40 Amps
- Ihold: 3.75 Amperes
- Itrip: 7.50 Amps
- Initial Resistance (Min): 0.03 Ohms
- Initial Resistance (Max): 0.05 Ohms
- 1 Hour (R1) Post-Trip Resistance: 0.08 Ohms
- Max Time to Trip: 18.75 Seconds
- Tripped Power Dissipation (Typ): 3.20 Watts
- Operating/Storage Temperature: -40 °C to +85 °C
- Max Device Surface Temperature in Tripped State: 125 °C
- Passive Aging: +85 °C, 1000 hours ±5 % typical resistance change
- Humidity Aging: +85 °C, 85 % R.H. 1000 hours ±5 % typical resistance change
- Thermal Shock: +85 °C to -55 °C, 10 times ±10 % typical resistance change
- Solvent Resistance: MIL-STD-202, Method 215 No change
- Vibration: MIL-STD-883C, Method 2007.1 No change
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Frequently Asked Questions
Where can I buy Bourns MFRX375722?
You can click on the BUY or RFQ button to purchase MFRX375722 from an authorized Bourns distributor.
How do I troubleshoot issues or seek technical support for part MFRX375722?
You can download the MFRX375722 datasheet or visit the Bourns website for support.
Who is the manufacturer of MFRX375722?
Bourns