RXEF185K The Littelfuse Inc. RXEF185K is a polymeric PTC resettable fuse designed for overcurrent protection. It offers a 72V voltage rating and 1.85A current rating.
Mfr Part #:

RXEF185K

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. RXEF185K is a polymeric PTC resettable fuse designed for overcurrent protection. It offers a 72V voltage rating and 1.85A current rating.
✓ Total Stock: 144 pcs
$ Price Range: $0.99

RXEF185K Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
144 pcs
144 pcs On Request 1 On Request On Request 1640+ On Request On Request

RXEF185K Specifications Quick View

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

RXEF185K Description

Short technical summary and product information.

The Littelfuse Inc. RXEF185K is a radial-leaded, polymeric Positive Temperature Coefficient (PTC) resettable fuse. It is designed to provide overcurrent protection in electronic circuits.

 

Key electrical specifications include a maximum continuous voltage rating of 72VDC and a current rating of 1.85A. The device has a hold current of 0.185A and a trip current of 0.37A. It features a maximum resistance of 2.75mΩ and a resistance of 1.83mΩ at 20°C. The maximum resistance after one hour post trip is 4.40mΩ. The time to trip is a maximum of 2.2 seconds.

 

This PTC fuse is suitable for through-hole mounting and comes in a radial, disc package. The lead spacing is 5.05mm. The operating temperature range is -40°C to 85°C.

 

Applications for this series include satellite video receivers, industrial controls, transformers, computer motherboards, modems, USB hubs, and battery packs.

RXEF185K Quick Information

Product Type: PTC Resettable Fuse
Series: RXEF
Canonical Name: Littelfuse Inc. RXEF185K Polymeric PTC Resettable Fuse, 72V, 1.85A
Subcategory: PPTC

RXEF185K Compliance

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

RXEF185K Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

RXEF185K Features

  • Resettable overcurrent protection device.
  • 72V maximum continuous voltage rating.
  • 1.85A current rating.
  • Through-hole mounting package.
  • Low resistance post-trip.

RXEF185K Applications

  • Used in satellite video receivers.
  • Suitable for industrial controls.
  • Protects transformers and motherboards.
  • Supports USB hubs and peripherals.
  • Applicable to battery pack protection.

RXEF185K FAQs

7 frequently asked questions generated from this part’s specifications.
What is the hold current of the RXEF185K?

The hold current is 1.85A at 20°C still air.

What is the maximum continuous voltage rating?

72V DC.

What is the maximum fault current the RXEF185K can handle?

40A.

What is the time to trip for the RXEF185K?

2.2 seconds maximum.

What package type is the RXEF185K available in?

Radial disc, through-hole mounting, lead spacing 5.05mm.

What is the operating temperature range?

-40°C to 85°C.

What is the resistance range of the RXEF185K?

Minimum 1.83mΩ, maximum 2.75mΩ at 20°C.

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