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Littelfuse Inc. RUSBF250 Series

2 variants · Littelfuse Inc.

About the Littelfuse Inc. RUSBF250 Series

The Littelfuse Inc. RUSBF250 Series series groups 2 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common approval agency of CSA, TUV, UL, case of Radial, Disc and current - hold (Ih) of 2.5 A. Variants differ by lead spacing and package, so you can match the exact lead spacing your application requires using the selection guide below. The range mixes active and legacy part numbers, so you can source both current Littelfuse Inc. RUSBF250 Series variants and discontinued ones from a single page.

Select a variant by

Lead spacing
0.118\" (3.00mm) · 0.199\" (5.05mm)
Package
Tape & Box (TB) · Tape & Reel (TR) Tape & Reel (TR) Cut Tape (CT) Cut Tape (CT)

Shared specifications

Approval agency
CSA, TUV, UL
Case
Radial, Disc
Current - hold (Ih)
2.5 A
Current - max
40 A
Current - trip
5 A
Height - seated
0.720\" (18.30mm)
Mounting
Through Hole
Operating temperature
-40°C ~ 85°C
Ratings
-
Resistance - initial (Ri)
20 mOhms
Resistance - post trip (R1)
60 mOhms
Size (Dimension)
0.449\" L x 0.118\" W (11.40mm x 3.00mm)

Variant comparison

ParameterRUSBF250-2RUSBF250-AP
Lead spacing0.118\" (3.00mm)0.199\" (5.05mm)
PackageTape & Reel (TR) Tape & Reel (TR) Cut Tape (CT) Cut Tape (CT)Tape & Box (TB)

Request a quote on any Littelfuse Inc. RUSBF250 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

All variants