LR4-550F is out of stock and can be placed on backorder.
Available Substitutes:

Direct


Bourns Inc.
In Stock: 2,056
Unit Price: $8.57000
Datasheet

Similar


Bel Fuse Inc.
In Stock: 411
Unit Price: $6.45000
Datasheet

Similar


Bourns Inc.
In Stock: 2,789
Unit Price: $14.77000
Datasheet

Similar


Bourns Inc.
In Stock: 503
Unit Price: $17.54000
Datasheet
RF1545-000
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
RF1545-000
Building Automation – Protect/Sense/Control
Basics of NTC and PTC Thermistors - Another Teaching Moment

LR4-550F

DigiKey Part Number
LR4-550F-ND
Manufacturer
Manufacturer Product Number
LR4-550F
Description
PTC RESET FUSE 20V 5.5A STRAP
Manufacturer Standard Lead Time
15 Weeks
Customer Reference
Detailed Description
Polymeric PTC Resettable Fuse 20V 5.5 A Ih User Defined Strap
Datasheet
 Datasheet
Product Attributes
Type
Description
Select All
Category
Manufacturer
Littelfuse Inc.
Series
Packaging
Bag
Part Status
Active
Type
Polymeric
Voltage - Max
20V
Current - Hold (Ih) (Max)
5.5 A
Current - Trip (It)
10.5 A
Current - Max
100 A
Time to Trip
5 s
Resistance - Initial (Ri) (Min)
9 mOhms
Resistance - Post Trip (R1) (Max)
22 mOhms
Operating Temperature
-40°C ~ 85°C
Ratings
-
Mounting Type
User Defined
Package / Case
Strap
Size / Dimension
1.417" L x 0.283" W (36.00mm x 7.20mm)
Height - Seated (Max)
-
Thickness (Max)
0.039" (1.00mm)
Lead Spacing
-
Approval Agency
CSA, TUV, UL
Product Questions and Answers

See what engineers are asking, ask your own questions, or help out a member of the DigiKey engineering community

0 In Stock
Check Lead Time
Request Stock Notification
All prices are in HKD
Bag
QuantityUnit PriceExt Price
1$9.87000$9.87
5$8.17400$40.87
10$7.53800$75.38
50$6.25760$312.88
100$5.77300$577.30
250$5.18848$1,297.12
500$4.78430$2,392.15
1,000$4.40983$4,409.83
5,000$3.89568$19,478.40
Manufacturers Standard Package