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20LR730U PTC resettable fuse with 7.3A hold current, 14.1A trip current, 20V max voltage, and 100A max fault current in a Strap package.
Mfr Part #:

20LR730U

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
PTC resettable fuse with 7.3A hold current, 14.1A trip current, 20V max voltage, and 100A max fault current in a Strap package.
✓ Total Stock: 17,875 pcs

20LR730U Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
17,875 pcs
On Request
17875 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

20LR730U Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Length
Mounting Type
Operating Temperature
Package / Case
Power Dissipation (Max)
Resistance
SVHC Present
Tape & Reel
Thickness (Max)
Time to Trip
Type
Voltage
Width
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20LR730U Description

Short technical summary and product information.

The Littelfuse 20LR730U is a polymeric PTC resettable fuse from the LR Series, designed for overcurrent and short-circuit protection in rechargeable battery applications. It features a hold current of 7.3 A and a trip current of 14.1 A at 20°C still air, with a maximum voltage rating of 20 V and a maximum fault current capability of 100 A.

 

This device offers a fast trip time of 5 seconds at 30 A, with initial resistance as low as 6 mΩ (typical 12 mΩ) and a maximum post-trip resistance of 15 mΩ. Power dissipation in the tripped state is 3.3 W maximum. The operating temperature range spans -40°C to 85°C.

 

The 20LR730U comes in a Strap package with user-defined mounting, measuring 28.10 mm in length, 14.20 mm in width, and 1.00 mm in thickness. It features weldable nickel terminals and a slim, low-profile design suitable for space-constrained battery packs.

20LR730U Quick Information

Product Type: PTC Resettable Fuse
Series: LR
Canonical Name: Littelfuse 20LR730U PTC Resettable Fuse
Subcategory: Polymeric PTC

20LR730U Compliance

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

20LR730U Features

  • 7.3A hold current at 20°C still air.
  • 14.1A trip current at 20°C still air.
  • 20V maximum voltage rating.
  • 100A maximum fault current capability.
  • Fast 5 second trip time at 30A.

20LR730U Applications

  • Rechargeable battery cell overcurrent protection.
  • Portable computer battery pack protection.
  • Camcorder battery protection circuits.
  • Low resistance battery strap applications.

20LR730U FAQs

7 frequently asked questions generated from this part’s specifications.
What is the hold current of the 20LR730U?

The hold current is 7.3 A at 20°C still air.

What is the trip current of the 20LR730U?

The trip current is 14.1 A at 20°C still air.

What is the maximum voltage rating?

The maximum voltage is 20 V.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

What package does the 20LR730U come in?

It comes in a Strap package with user-defined mounting.

What is the time to trip?

The time to trip is 5 seconds at 30 A.

What is the maximum fault current?

The maximum fault current is 100 A.

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