MF-SM125-2 The Bourns MF-SM125-2 is a PTC resettable fuse rated for 15V with a hold current of 1.25A. It features a surface mount 2-SMD package and is AEC-Q200 qualified.
Mfr Part #:

MF-SM125-2

Available from 2 distributors
Mfr Name: Bourns
Bourns
The Bourns MF-SM125-2 is a PTC resettable fuse rated for 15V with a hold current of 1.25A. It features a surface mount 2-SMD package and is AEC-Q200 qualified.
Total Stock: 800 pcs
$ Price Range: $0.17 - $0.38

MF-SM125-2 Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
755 pcs
755 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
45 pcs
45 pcs On Request 1 On Request On Request On Request On Request On Request

MF-SM125-2 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
California Proposition 65
Current
ESD Classification
Halogen Free
Length
Maximum Current
Mounting Type
Operating Temperature
Power Dissipation (Tripped)
Ratings
Resistance
Storage Temperature
Tape & Reel
Thickness (Max)
Time to Trip
Time to Trip (Nominal)
Trip Current (Itrip)
Type
Voltage
Width

MF-SM125-2 Description

Short technical summary and product information.

The Bourns MF-SM125-2 is a polymeric PTC resettable fuse designed for overcurrent protection in electronic circuits. It has a hold current of 1.25A at 23°C and a trip current of 2.5A. The maximum voltage rating is 15V, and it can handle fault currents up to 100A. Initial resistance is 0.07Ω (minimum) and maximum resistance in tripped state is 0.25Ω. Time to trip is 8.0 seconds at 2.0A and 23°C. Power dissipation in tripped state is 1.7W typical.

 

The device operates over a temperature range of -40°C to 85°C and is AEC-Q200 qualified, making it suitable for automotive applications. It is RoHS compliant, lead-free, and halogen-free. The package is a 2-SMD surface mount type with dimensions 7.31mm x 5.44mm x 3.00mm. The MF-SM125-2 is compatible with standard reflow soldering processes and is available in tape and reel packaging.

MF-SM125-2 Quick Information

Product Type: PTC Resettable Fuse
Canonical Name: Bourns MF-SM125-2 PTC Resettable Fuse, 15V, 1.25A, 2-SMD
Subcategory: Surface Mount PTC Resettable Fuse

MF-SM125-2 Compliance

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

MF-SM125-2 Estimated Pricing

Qty Low High
1+ $0.38 $0.38
10+ $0.35 $0.35
50+ $0.29 $0.29
100+ $0.26 $0.26
200+ $0.24 $0.24
500+ $0.22 $0.22
1,000+ $0.20 $0.20
2,000+ $0.19 $0.19
4,000+ $0.17 $0.17

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

MF-SM125-2 Features

  • Hold current of 1.25 A at 23°C.
  • Maximum voltage rating of 15 V.
  • Surface mount 2-SMD package.
  • AEC-Q200 qualified for automotive.
  • Low resistance: 0.07 Ω minimum.

MF-SM125-2 Applications

  • Overcurrent protection in automotive electronics.
  • Used in power supply output circuits.
  • Ideal for battery charging circuits.
  • Suitable for USB port protection.

MF-SM125-2 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the hold current of the MF-SM125-2?

1.25 A at 23°C.

What is the maximum voltage rating?

15 V.

What is the maximum fault current it can handle?

100 A.

What is the time to trip?

8.0 seconds at 2.0 A (23°C).

What package is the MF-SM125-2 available in?

2-SMD surface mount package.

What is the operating temperature range?

-40°C to 85°C.

Is the MF-SM125-2 RoHS compliant?

Yes, RoHS3 compliant and lead-free.

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