MF-R040 is out of stock and can be placed on backorder.
Available Substitutes:

Direct


Littelfuse Inc.
In Stock: 106
Unit Price: $0.63000
Datasheet

Direct


Littelfuse Inc.
In Stock: 0
Unit Price: $0.55000
Datasheet

Direct


Eaton - Electronics Division
In Stock: 0
Unit Price: $0.64000
Datasheet

Similar


Bel Fuse Inc.
In Stock: 0
Unit Price: $0.32000
Datasheet
Polymeric PTC Resettable Fuse 60V 400 mA Ih Through Hole Radial, Disc
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Polymeric PTC Resettable Fuse 60V 400 mA Ih Through Hole Radial, Disc
Basics of NTC and PTC Thermistors - Another Teaching Moment

MF-R040

DigiKey Part Number
MF-R040-ND
Manufacturer
Manufacturer Part Number
MF-R040
Description
PTC RESET FUSE 60V 400MA RADIAL
Manufacturer Standard Lead Time
4 Weeks
Customer Reference
Detailed Description
Polymeric PTC Resettable Fuse 60V 400 mA Ih Through Hole Radial, Disc
Datasheet
 Datasheet
EDA/CAD Models
MF-R040 Models
Product Attributes
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Category
Resistance - Initial (Ri) (Min)
520 mOhms
Manufacturer
Bourns Inc.
Resistance - Post Trip (R1) (Max)
1.29 Ohms
Series
Operating Temperature
-40°C ~ 85°C
Packaging
Bulk
Mounting Type
Through Hole
Part Status
Active
Package / Case
Radial, Disc
Type
Polymeric
Size / Dimension
0.291" Dia x 0.122" T (7.40mm x 3.10mm)
Voltage - Max
60V
Height - Seated (Max)
0.539" (13.70mm)
Current - Hold (Ih) (Max)
400 mA
Lead Spacing
0.201" (5.10mm)
Current - Trip (It)
800 mA
Approval Agency
cURus, TUV
Current - Max
40 A
Base Product Number
Time to Trip
3.8 s
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (4)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
60R040XPRLittelfuse Inc.106F5560CT-ND$0.63000Direct
60R040XULittelfuse Inc.0F2005-ND$0.55000Direct
PTR060V0040-TREaton - Electronics Division0283-PTR060V0040-TR-ND$0.64000Direct
0ZRC0040FF1EBel Fuse Inc.05923-0ZRC0040FF1E-ND$0.32000Similar
In-Stock: 0
500 estimated in stock on 25-Jan-2027
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All prices are in USD
Bulk
QuantityUnit PriceExt Price
1$0.45000$0.45
5$0.37400$1.87
10$0.34500$3.45
50$0.28580$14.29
100$0.26380$26.38
250$0.23716$59.29
500$0.21878$109.39
1,000$0.20177$201.77
5,000$0.16692$834.60
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.