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Littelfuse Inc. 0603L010YR — Circuit Protection

Littelfuse 0603L010YR PTC Resettable Fuse, 100 mA, 15V

MPN0603L010YR
Active

Littelfuse Inc. POLY-FUSE® 0603L series, PTC Resettable Fuse, polymeric, surface mount, 0603 (1608 Metric) concave package, 100 mA hold, 15 V max, 40 A max interrupt, 1 s trip time.

$1.0200Ref. price · indicative, final on quote
Littelfuse Inc. 0603L010YR datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

0603L010YR specifications
ParameterValue
TypePolymeric
SeriesPOLY-FUSE®, 0603L
MountingSurface Mount
Voltage - max15V
Current - max40 A
Current - trip300 mA
Current - hold (Ih)100 mA
Operating temperature-40°C~85°C
Size (Dimension)0.063\" L x 0.032\" W (1.60mm x 0.80mm)
Approval agencycURus, TUV
PackageTape & Reel (TR); Cut Tape (CT)
Time to trip1 s
Case0603 (1608 Metric), Concave
Thickness0.030\" (0.75mm)
Resistance - initial (Ri)900 mOhms
Resistance - post trip (R1)6 Ohms

Product details

Device identity and key parametrics

The 0603L010YR is a Littelfuse POLY-FUSE® series polymeric PTC resettable fuse in a standard 0603 (1608 Metric) concave surface-mount package. Rated for a hold current (Ih) of 100 mA maximum at 15 V, with a maximum interrupt current of 40 A — the device trips in 1 second at the specified fault condition. The initial cold resistance is 900 mOhms minimum, rising to 6 Ohms maximum after a trip event, which defines the series resistance added to the protected circuit.

Occupies a 1.60 mm x 0.80 mm footprint with a maximum seated height of 0.75 mm — the concave termination style is compatible with standard reflow solder profiles for 0603 chip components.

Temperature grade and compliance

Carries cURus and TUV agency approvals, confirming the device meets North American and European safety standards for overcurrent protection components.

Frequently asked questions

What is the hold current and trip current for the 0603L010YR?

The hold current (Ih) is 100 mA maximum, and the trip current (It) is 300 mA. The device will begin to trip when the sustained current exceeds the trip threshold.

What compliance documentation does Littelfuse provide for the 0603L010YR?

The device is cURus and TUV approved, indicating compliance with UL/CSA and IEC/EN safety standards for polymeric PTC fuses. RoHS and REACH compliance documentation is typically available from the manufacturer.