Resettable Fuse PTC

Item number 59643 Brand Sparkfun Model COM-08357 Share Write a review
Resettable Fuse PTC

Description Attachments

The Sparkfun Resettable Fuse PTC is a valuable addition to your electronic system, designed to prevent potential damage from excessive current. This unique resistor, also known as a Positive Temperature Coefficient (PTC), has the ability to trip when your circuit attempts to draw more than 250mA of current, such as in the event of a short circuit.

Upon tripping, the PTC heats up, increasing its resistance and effectively breaking the circuit. This allows only a minimal leakage current to pass through, significantly less than the 3A that could potentially be allowed by a short. Once the short is removed, the PTC resets, allowing the regular flow of current up to 250mA. This makes the PTC an effective resettable fuse that can protect your system, particularly beneficial for battery-powered devices that require protection against high-current accidental discharges.

The effectiveness of the PTC can be visually demonstrated through thermal imaging. In a normal state, a voltage regulating circuit maintains a regular temperature. However, when shorted, the PTC significantly heats up as it works to limit the damaging current flowing through the circuit. This visual representation clearly shows the protective function of the PTC in action, effectively preventing potential harm to your electronic system.

For more detailed information, consult the PTC RXE025 document provided by Sparkfun.


Brand information
Brand Sparkfun
Size info
Length7 mm
Width21 mm
Height3 mm
Weight0,3 g
€ 1,60€ 1,35 Excl. VAT (NL)
Out of stock In stock with supplier
Delivered in 5 to 10 days
Shipped from € 3,50 (NL) 30 days cooling-off Excellent service

Customer questions

Customer Reviews

Resettable Fuse PTC Click a star to leave your review

Recently viewed items

Webwinkelkeur Kiyoh Trustpilot Opencircuit