Obsolete — sourcing through independent channels
The 1206L160PR: No official successor order code is recorded for this part. For a new design, a parametric search within the POLY-FUSE® 1206L series for the required hold current and voltage rating is the practical path.
What the ratings mean for your circuit
1.6 A hold current (Ih) means the PTC stays in its low-resistance state below that current at 25 °C ambient — your circuit's normal operating current should be at or under this figure to avoid nuisance trips. The device trips at 3.2 A (It) minimum, with a typical trip time of 400 ms at that current level — fast enough to protect downstream components from sustained overcurrent events without false-triggering on inrush. Rated for a maximum fault current of 100 A at 6 V — this is the interrupting rating; the PTC will switch to its high-resistance state and limit current for faults up to that level, then reset when power is removed and the device cools. Initial resistance is 25 mOhms minimum, rising to 110 mOhms maximum after tripping (post-trip R1). The low initial resistance minimizes voltage drop and power loss during normal operation.
Surface-mount in a 1206 (3216 Metric) concave package — 3.25 mm x 1.65 mm footprint, 1.60 mm max thickness. The concave termination style suits standard reflow soldering profiles and allows visual inspection of the solder joint. Operating temperature range is -40 °C to 85 °C, covering most indoor and outdoor equipment environments.
Compliance and approvals
Carries cURus and TUV approvals — recognized for use in North American and European equipment without additional component-level certification.