DistyParts Icon
MF-R300 PTC resettable fuse with 3A hold current, 6A trip current, 30V max voltage, and 40A max current in a radial through-hole package.
Mfr Part #:

MF-R300

Available from 2 distributors
Mfr Name: Bourns
Bourns
PTC resettable fuse with 3A hold current, 6A trip current, 30V max voltage, and 40A max current in a radial through-hole package.
✓ Total Stock: 38,002 pcs
$ Price Range: $0.22 - $0.48

MF-R300 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
AA2DE ✓
Non-Authorised Inventory information
37,002 pcs
On Request
37002 pcs On Request 1 On Request On Request On Request On Request On Request
Chanetech ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 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.

MF-R300 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Halogen Free
Height
Industrial Grade
Lead Spacing
Lead Style
Length
Military Grade
Mounting Type
Operating Temperature
Prop 65
Resistance
Tape & Reel
Termination Style
Time to Trip
Type
Voltage
Width
View Similar Products (0)

MF-R300 Description

Short technical summary and product information.

The Bourns MF-R300 is a polymeric PTC resettable fuse designed for overcurrent protection. It has a hold current of 3A and a trip current of 6A, with a maximum voltage rating of 30V and a maximum interrupt current of 40A. The device offers low initial resistance (0.020Ω to 0.050Ω) and a maximum post-trip resistance of 80mΩ. At 15A, the time to trip is typically 10.8 seconds maximum. The tripped power dissipation is 2.0W typical. The operating temperature range is -40°C to 85°C. The component is mounted through hole in a radial disc package with lead spacing of 5.10mm. Dimensions are 12.00mm x 3.00mm x 18.30mm. The MF-R300 is RoHS compliant, lead free, halogen free, and carries cUL and TÜV agency approvals. It is suitable for a variety of applications requiring resettable overcurrent protection.

MF-R300 Quick Information

Product Type: PTC Resettable Fuse
Series: MF-R
Canonical Name: PTC Resettable Fuse, 3A Hold Current, 30V, Radial Through-Hole
Subcategory: Polymeric PTC

MF-R300 Compliance

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

MF-R300 Estimated Pricing

Qty Low High
1+ $0.48 $0.48
10+ $0.39 $0.39
50+ $0.38 $0.38
100+ $0.34 $0.34
250+ $0.32 $0.32
500+ $0.29 $0.29
1,000+ $0.27 $0.27
3,000+ $0.22 $0.22

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

MF-R300 Features

  • Polymeric PTC resettable fuse design.
  • 3A hold current, 6A trip current.
  • 30V maximum voltage rating.
  • 40A maximum interrupt current.
  • RoHS compliant and halogen free.

MF-R300 Applications

  • Ideal for overcurrent protection in electronic circuits.
  • Used in power management and protection systems.
  • Suitable for resettable fuse applications.
  • Common in consumer electronics and industrial controls.

MF-R300 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the hold current of the MF-R300?

3A.

What is the maximum voltage rating of the MF-R300?

30V.

What is the maximum interrupt current of the MF-R300?

40A.

What is the time to trip at 15A for the MF-R300?

10.8 seconds maximum.

What is the package type of the MF-R300?

Radial, disc, through-hole with lead spacing 5.10mm.

What is the operating temperature range of the MF-R300?

-40°C to 85°C.

Is the MF-R300 RoHS compliant?

Yes, RoHS compliant, lead free, halogen free.

Home

Categories