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Littelfuse Inc. 0603L200SLYR — Circuit Protection

Littelfuse 0603L200SLYR PTC Resettable Fuse, 2A Hold, 6V

MPN0603L200SLYR
Active

Littelfuse Inc., POLY-FUSE® LoRho series, Polymeric PTC Resettable Fuse, 0603L200SLYR, 2 A hold, 6 V max, 50 A max fault, 0603 SMD.

$0.9164Ref. price · indicative, final on quote
Littelfuse Inc. 0603L200SLYR datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

0603L200SLYR specifications
ParameterValue
TypePolymeric
SeriesPOLY-FUSE®, LoRho
MountingSurface Mount
Voltage - max6V
Current - max50 A
Current - trip4 A
Current - hold (Ih)2 A
Size (Dimension)0.063\" L x 0.032\" W (1.60mm x 0.80mm)
PackageTape & Reel (TR); Cut Tape (CT)
Time to trip1 s
Case0603 (1608 Metric), Concave
Thickness0.039\" (1.00mm)
Resistance - initial (Ri)5 mOhms
Resistance - post trip (R1)50 mOhms

Product details

Hold current and voltage ceiling

The 0603L200SLYR is a polymeric PTC resettable fuse from the POLY-FUSE® LoRho series, rated for a 2 A hold current at 6 V maximum.

Trip characteristics and resistance

At 4 A trip current (It), the device trips in 1 second typical — fast enough to protect a downstream regulator or connector from a hard short. The initial resistance (Ri) is 5 mOhms minimum, and the post-trip resistance (R1) rises to 50 mOhms maximum, which limits the fault current to a safe level and then resets when power is cycled. The 50 A maximum fault current rating means the fuse can interrupt a short-circuit current up to that level without rupturing — this is the interrupting rating, not the continuous current.

Frequently asked questions

What is the hold current and voltage rating for 0603L200SLYR?

The 0603L200SLYR has a 2 A hold current (Ih) and a 6 V maximum voltage rating.

What package does 0603L200SLYR come in?

It comes in a 0603 (1608 Metric) concave SMD package, 1.60 mm x 0.80 mm, 1.00 mm thick.