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

Direct


Bourns Inc.
In Stock: 2,056
Unit Price: £0.81000
Datasheet

Similar


Bel Fuse Inc.
In Stock: 411
Unit Price: £0.61000
Datasheet

Similar


Bourns Inc.
In Stock: 3,289
Unit Price: £1.39000
Datasheet

Similar


Bourns Inc.
In Stock: 503
Unit Price: £1.65000
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 GBP
Bag
QuantityUnit PriceExt Price
1£0.93000£0.93
5£0.76800£3.84
10£0.70900£7.09
50£0.58860£29.43
100£0.54290£54.29
250£0.48796£121.99
500£0.44996£224.98
1,000£0.41474£414.74
5,000£0.36639£1,831.95
Manufacturers Standard Package
Unit Price without VAT:£0.93000
Unit Price with VAT:£1.11600