RKEF300 Littelfuse RKEF300 is a polymeric PTC resettable fuse with 3A hold current and 60V max voltage. It features radial leaded through-hole mounting.
Mfr Part #:

RKEF300

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse RKEF300 is a polymeric PTC resettable fuse with 3A hold current and 60V max voltage. It features radial leaded through-hole mounting.
Total Stock: 75 pcs
$ Price Range: $0.32 - $0.69

RKEF300 Available from 1 distributor

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Non-Authorised
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75 pcs
75 pcs On Request 1 On Request On Request On Request On Request On Request

RKEF300 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Height
Lead Spacing
Lead Style
Length
Mounting Type
Operating Temperature
Resistance
Tape & Reel
Time to Trip
Type
Voltage
Width

RKEF300 Description

Short technical summary and product information.

The Littelfuse RKEF300 is a polymeric PTC resettable fuse designed for overcurrent protection. It features a hold current of 3A and a maximum voltage of 60V. The time to trip at 3A is 19.8 seconds, and the initial resistance is 80 mΩ. The fuse is mounted through hole in a radial disc package with lead spacing of 5.05mm. It operates over a temperature range of -40°C to 85°C. This component is suitable for applications requiring resettable overcurrent protection in low to medium voltage circuits.

RKEF300 Quick Information

Product Type: PTC Resettable Fuse
Series: RKEF
Canonical Name: Littelfuse RKEF300 PTC Resettable Fuse
Subcategory: Radial Leaded Polymeric PTC

RKEF300 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

RKEF300 Estimated Pricing

Qty Low High
1+ $0.69 $0.69
10+ $0.64 $0.64
50+ $0.53 $0.53
100+ $0.49 $0.49
250+ $0.44 $0.44
500+ $0.40 $0.40
1,000+ $0.37 $0.37
5,000+ $0.32 $0.32

Estimated market price range - modelled values for guidance only, not live distributor offers.

RKEF300 Features

  • 3 Amp hold current rating.
  • Rated for up to 60V maximum voltage.
  • Polymeric PTC resettable fuse technology.
  • Through hole radial disc package.
  • Operating temperature from -40°C to 85°C.

RKEF300 Applications

  • Used in overcurrent protection circuits.
  • Suitable for power supply protection.
  • Ideal for consumer electronics applications.
  • Applied in automotive and industrial systems.

RKEF300 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the hold current of the RKEF300?

The hold current is 3A.

What is the maximum voltage rating?

The maximum voltage is 60V.

What is the time to trip?

The time to trip at 3A is 19.8 seconds.

What package is this PTC available in?

Radial, Disc through hole package with 5.05mm lead spacing.

What is the initial resistance?

The initial resistance is 80 mΩ.

What is the operating temperature range?

-40°C to 85°C.

Is the RKEF300 RoHS compliant?

Listed as RoHS3 compliant, but this is unverified.

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