MF-LS190 Polymeric PTC resettable fuse with 1.9A hold current, 4.2A trip current, and 24V maximum voltage. Designed for overcurrent protection in battery packs and portable electronics.
Mfr Part #:

MF-LS190

Available from 1 distributors
Mfr Name: Bourns
Bourns
Polymeric PTC resettable fuse with 1.9A hold current, 4.2A trip current, and 24V maximum voltage. Designed for overcurrent protection in battery packs and portable electronics.
✓ Total Stock: 500 pcs
$ Price Range: $0.31

MF-LS190 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
500 pcs
500 pcs On Request 1 On Request On Request On Request On Request On Request

MF-LS190 Specifications Quick View

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

MF-LS190 Description

Short technical summary and product information.

The Bourns MF-LS190 is a polymeric PTC resettable fuse designed for overcurrent protection. It has a hold current of 1.9A and a trip current of 4.2A at 23°C, with a maximum voltage rating of 24V. The device can handle fault currents up to 100A. Initial resistance ranges from 0.030 to 0.057 ohms, and post-trip resistance after one hour is maximum 0.100 ohms. Time to trip at 23°C is 10 seconds maximum, with typical tripped power dissipation of 3.0W.

 

The operating temperature range is -40°C to 85°C, and the maximum device surface temperature when tripped is 125°C. The fuse is housed in a strap package measuring 22.35mm x 10.60mm x 1.10mm, with user-defined mounting. It is RoHS compliant. Common applications include rechargeable battery pack protection, cellular phones, and laptop computers, particularly in environments with elevated ambient temperatures.

MF-LS190 Quick Information

Product Type: PTC Resettable Fuse
Series: MF-LS
Canonical Name: Bourns MF-LS190 PTC Resettable Fuse
Subcategory: Polymeric PTC

MF-LS190 Compliance

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

MF-LS190 Estimated Pricing

Qty Low High
6,000+ $0.31 $0.31

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

MF-LS190 Features

  • Hold current of 1.9 amps at 23°C.
  • Trip current of 4.2 amps at 23°C.
  • Maximum voltage rating of 24 volts.
  • Can handle up to 100 amp fault current.
  • Very low initial resistance of 0.030 ohm.

MF-LS190 Applications

  • Rechargeable battery pack overcurrent protection.
  • Protection for cellular phone circuits.
  • Overcurrent protection in laptop computers.
  • Works at elevated ambient temperatures up to 85°C.

MF-LS190 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the hold current of the MF-LS190?

The hold current is 1.9A at 23°C.

What is the trip current?

The trip current is 4.2A at 23°C.

What is the maximum voltage rating?

The maximum voltage is 24V.

What is the time to trip?

The time to trip is 10 seconds maximum at specified current and 23°C.

What is the initial resistance range?

The initial resistance ranges from 0.030 to 0.057 ohms.

What is the operating temperature range?

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

What is the package type?

The package is a Strap with user-defined mounting.

Home
Account

Categories