SRP420F is out of stock and can be placed on backorder.
Available Substitutes:

Direct


Bourns Inc.
In Stock: 0
Unit Price: $0.71000
Datasheet

Similar


Bourns Inc.
In Stock: 0
Unit Price: $0.66000
Datasheet

Similar


Bourns Inc.
In Stock: 0
Unit Price: $0.69000
Datasheet
Polymeric PTC Resettable Fuse 30V 4.2 A Ih User Defined Strap
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Polymeric PTC Resettable Fuse 30V 4.2 A Ih User Defined Strap
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SRP420F

DigiKey Part Number
SRP420F-ND
Manufacturer
Manufacturer Product Number
SRP420F
Description
PTC RESET FUSE 30V 4.2A STRAP
Manufacturer Standard Lead Time
15 Weeks
Customer Reference
Detailed Description
Polymeric PTC Resettable Fuse 30V 4.2 A Ih User Defined Strap
Datasheet
 Datasheet
Product Attributes
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Category
Time to Trip
6 s
Manufacturer
Littelfuse Inc.
Resistance - Initial (Ri) (Min)
12 mOhms
Series
Resistance - Post Trip (R1) (Max)
40 mOhms
Packaging
Bulk
Operating Temperature
-40°C ~ 85°C
Part Status
Active
Mounting Type
User Defined
Type
Polymeric
Package / Case
Strap
Voltage - Max
30V
Size / Dimension
1.240" L x 0.522" W (31.50mm x 13.25mm)
Current - Hold (Ih) (Max)
4.2 A
Thickness (Max)
0.043" (1.10mm)
Current - Trip (It)
7.6 A
Approval Agency
CSA, TUV, UL
Current - Max
100 A
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (3)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
MF-S420Bourns Inc.0MF-S420-ND$0.71000Direct
MF-S200Bourns Inc.0MF-S200-ND$0.66000Similar
MF-S350Bourns Inc.0MF-S350-ND$0.69000Similar
In-Stock: 0
500 estimated in stock on 26-Apr-2027
Request Stock Notification
All prices are in USD
Bulk
QuantityUnit PriceExt Price
1$1.01000$1.01
5$0.84000$4.20
10$0.77500$7.75
50$0.64280$32.14
100$0.59310$59.31
250$0.53308$133.27
500$0.49158$245.79
1,000$0.45314$453.14
5,000$0.39325$1,966.25
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.