PTC Resettable Fuse (Polymeric) EB1055001519 2A 0.81×7.6 mm

PTC Resettable Fuse (Polymeric) EB1055001519 2A 0.81×7.6 mm is a compact, polymeric positive temperature coefficient (PTC) device designed to provide automatic overcurrent protection for small electronic circuits. The component increases its resistance rapidly when the current exceeds the rated level, limiting fault current and protecting downstream components. After the fault condition is removed and the device cools, it resets to its low-resistance state without needing replacement, enabling reliable and maintenance-free circuit protection in confined spaces.

Advantages

This polymeric PTC fuse offers automatic reset behavior, eliminating the need to replace fuses after an overcurrent event. Its small dimensions and leaded form factor with Ø0.81 mm leads and 7.6 mm lead length simplify through-hole mounting on printed circuit boards and in wire-to-board assemblies. The device provides stable overcurrent trip characteristics at the rated 2A level, fast response to fault currents, and long-term reliability when used within specified electrical and thermal limits.

Suitable for

• Consumer electronics protection (chargers, adapters, portable devices)
• Power supply input and output protection
• PCB assemblies requiring compact, resettable overcurrent protection
• Small appliances and low-voltage control circuits

Key specifications

• Device type: Polymeric PTC resettable fuse
• Rated hold current: 2 A
• Lead diameter: 0.81 mm
• Lead length: 7.6 mm
• Mounting style: Through-hole / leaded
• Reset behavior: Automatic reset after cooling
• Typical application temperature range: suitable for standard consumer electronics ambient conditions

How to use

Install the PTC resettable fuse in series with the circuit supply line that requires overcurrent protection, observing polarity-independent placement since the device is non-polar. Use standard through-hole soldering techniques compatible with the lead diameter and length; avoid prolonged exposure to elevated soldering temperatures beyond manufacturer guidance. Ensure the fuse is placed where it can dissipate heat and is not enclosed with heat-sensitive components that could affect performance. Verify circuit current profiles to confirm the 2 A rating matches hold and trip requirements for normal operation and fault conditions.

Usage recommendations

For reliable operation, select the PTC fuse based on expected steady-state current and inrush conditions; if inrush currents approach the hold value, choose a device with a higher hold rating or implement additional inrush-limiting measures. Allow adequate spacing around the device for cooling and avoid repeated or prolonged trips in rapid succession to prevent thermal stress on nearby components.