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LR4-550RAF

Description
PTC RESET FUSE 20V 5.5A STRAP
CategoryCircuit protection   
File Size609KB,14 Pages
ManufacturerLittelfuse
Websitehttp://www.littelfuse.com
Environmental Compliance
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LR4-550RAF Overview

PTC RESET FUSE 20V 5.5A STRAP

LR4-550RAF Parametric

Parameter NameAttribute value
typepolymer
Voltage - maximum20V
Current - maximum100A
Current - Hold (Ih) (maximum)5.5A
Current - Trip (It)10.5A
Trip time5s
Resistance - Initial (Ri) (minimum value)9 mOhms
Resistor - after trip (R1) (maximum value)22 mOhms
Operating temperature-40°C ~ 85°C
grade-
Installation typeCustom
Package/casingbring
lead spacing-
ApprovalCSA,TUV,UL
POLYSWITCH RESETTABLE
DEVICES
Strap Battery Devices
Littelfuse PolySwitch, a pioneer of polymeric positive
temperature coefficient (PPTC) resettable devices, offers
several material platforms to help protect battery
applications. Each of these material platforms offers
different performance characteristics that allow the
engineer greater design flexibility. PolySwitch devices
for battery protection include SRP, LR4, VTP, VLP,
VLR, MXP and MGP series, disc and special application
strap devices.
BENEFITS
• Many material platforms and device form factors
help provide engineers more design flexibility
• Compatible with high-volume electronics assembly
• Assists in meeting regulatory requirements
• Low-resistance devices increase battery
operating time
APPLICATIONS
• Mobile phone and smart phone battery packs
• Tablet PC battery packs
• Mobile radio battery packs
• Computer battery packs
• Digital camera battery packs
• Portable media player battery packs
• Power tools (charge line)
FEATURES
• RoHS compliant
• Lead-free versions of all devices are available
• Broad range of resettable devices available
• Current ratings from 1.1A to 13A
• Voltage ratings from 6V to 30V
• Agency recognition: UL, CSA, TÜV
• Fast time-to-trip
• Low resistance
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
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