Littelfuse Inc.StrapRoHS
LR4-550F
PTC RESET FUSE 20V 5.5A STRAP
Category
Subcategory
Ptc Resettable Fuses
Package
Strap
Series
PolySwitch®, LR4
Status
Active
Datasheet
$1.23 / unit (market reference)
MOQ: 1 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | Littelfuse Inc. |
| Model | LR4-550F |
| Package / Case | Strap |
| Mounting Type | User Defined |
| Operating Temperature | -40°C ~ 85°C |
| Series | PolySwitch®, LR4 |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
LR4-550F by Littelfuse Inc. is a commonly used electronic component in the Ptc Resettable Fuses category. Available in Strap package with -40°C ~ 85°C operating temperature range. Contact us for datasheet, pricing, and availability.
📖 Technical Guides for LR4-550F
Alternatives & Replacements
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SRP420F
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MF-S200
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LR4-600F
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All Technical Specifications
| Type | Polymeric |
| Time to Trip | 5 s |
| Current - Max | 100 A |
| Voltage - Max | 20V |
| Thickness (Max) | 0.039" (1.00mm) |
| Size / Dimension | 1.417" L x 0.283" W (36.00mm x 7.20mm) |
| Current - Trip (It) | 10.5 A |
| Current - Hold (Ih) (Max) | 5.5 A |
| Resistance - Initial (Ri) (Min) | 9 mOhms |
| Resistance - Post Trip (R1) (Max) | 22 mOhms |
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