Hold current and trip threshold
The 1206L110THYR is a Littelfuse POLY-FUSE polymeric PTC resettable fuse in the 1206L series. It holds 1.1 A continuously without tripping; once the fault current exceeds 2.2 A (the trip current), the polymer heats and the resistance jumps from a typical 40 mOhms initial to as high as 210 mOhms post-trip, limiting the current within 100 ms (typical).
Voltage and current limits
Rated for a maximum voltage of 8 V and a maximum fault current of 100 A — the device can interrupt a short-circuit up to that current without rupturing, as long as the supply rail stays at or below 8 V.
Temperature range and approvals
Approved by cURus and TUV, so it is accepted in North American and European safety-certified designs without additional agency review.
Supplied on tape and reel or cut tape — the concave body suits standard pick-and-place and reflow assembly.