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1206L350-12SLWR

Littelfuse 1206L350/12SLWR PTC Resettable Fuse, 3.5A Hold

MPN1206L350/12SLWR
Active

Littelfuse POLY-FUSE LoRho series, Polymeric PTC resettable fuse, 1206L350/12SLWR, 3.5A hold, 12V max, 50A max fault, 1206 concave surface mount.

$2.1900Ref. price · indicative, final on quote
Littelfuse Inc. 1206L350/12SLWR datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1206L350/12SLWR specifications
ParameterValue
TypePolymeric
SeriesPOLY-FUSE®, LoRho
MountingSurface Mount
Voltage - max12V
Current - max50 A
Current - trip7 A
Current - hold (Ih)3.5 A
Operating temperature-40°C~85°C
Size (Dimension)0.126\" L x 0.065\" W (3.20mm x 1.65mm)
Approval agencycURus, TUV
PackageTape & Reel (TR); Cut Tape (CT)
Time to trip5 s
Case1206 (3216 Metric), Concave
Thickness0.055\" (1.40mm)
Resistance - initial (Ri)3 mOhms
Resistance - post trip (R1)20 mOhms

Product details

Polymeric PTC resettable fuse, 3.5 A hold, 12 V

The Littelfuse 1206L350/12SLWR is a Polymeric PTC resettable fuse from the POLY-FUSE LoRho series, designed to protect circuits by tripping when current exceeds the hold rating and resetting after the fault clears. Rated for a hold current of 3.5 A (Ih) and a trip current of 7 A (It), it limits fault current up to 50 A at 12 V max, with a typical time to trip of 5 seconds at the trip threshold. The low initial resistance of 3 mOhms (Ri min) and post-trip resistance of 20 mOhms (R1 max) minimize power loss during normal operation, making it suitable for high-current battery or USB power paths.

Surface-mount 1206 concave package, -40 to 85°C

Carries cURus and TUV approvals, confirming compliance with North American and international safety standards for overcurrent protection devices.

Frequently asked questions

How can I order the 1206L350/12SLWR and check availability?

The 1206L350/12SLWR is an active Littelfuse part sourced through independent distribution. Submit an RFQ with your target quantity; we confirm current pricing and lead time at quote.

What is the hold current and trip current of the 1206L350/12SLWR?

The hold current (Ih) is 3.5 A, and the trip current (It) is 7 A. At the trip threshold, the device typically clears the fault in 5 seconds.

What approvals does the 1206L350/12SLWR carry?

It is approved by cURus and TUV, covering North American and international safety standards for polymeric PTC fuses.