Resettable Fuse 30V PTC Polymer

30 V Resettable Polymer PTC Fuse – Smart Overcurrent Protection

The 30 V Resettable Fuse is a polymer Positive Temperature Coefficient (PTC) device that automatically isolates over‑current conditions and returns to normal operation once the fault subsides. Designed for low‑voltage dc applications, it offers fast trip times, high withstand voltage, and a compact 0805/1206 surface‑mount form factor, making it ideal for modern electronics that demand reliability without the bulk of conventional fuses.

Its key features include a low cold‑resistance baseline for minimal power loss, a rapid self‑reset capability that negates the need for replacement, and excellent isolation characteristics both in the conducted and radiated domains. The polymer construction ensures long cycle life and resistance to temperature cycling, while the stamped body provides a flush, low profile footprint suitable for space‑constrained boards.

• Voltage Rating: 30 V DC
• Hold Current (Ihold): 2 A @ 30 V
• Trip Current (Itrip): 4 A @ 30 V (typ)
• Common Use Case: Protecting USB chargers, mobile phone circuits, data loggers, and other 5 V / 12 V systems from transient surges and short‑circuit faults.

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