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RUE250

Description
PTC RESET FUSE 30V 2.5A RADIAL
CategoryCircuit protection   
File Size103KB,11 Pages
ManufacturerLittelfuse
Websitehttp://www.littelfuse.com
Download Datasheet Parametric View All

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RUE250 Overview

PTC RESET FUSE 30V 2.5A RADIAL

RUE250 Parametric

Parameter NameAttribute value
typepolymer
Voltage - maximum30V
Current - maximum40A
Current - Hold (Ih) (maximum)2.5A
Current - Trip (It)5A
Trip time10.3s
Resistance - Initial (Ri) (minimum value)20 mOhms
Resistor - after trip (R1) (maximum value)70 mOhms
Operating temperature-40°C ~ 85°C
grade-
Installation typeThrough hole
Package/casingRadial, disc type
size/dimensions0.449" long x 0.118" wide (11.40mm x 3.00mm)
Height - Installation (maximum)0.720"(18.30mm)
Thickness (maximum)-
lead spacing0.201"(5.10mm)
ApprovalCSA,TUV,UR
RUE
Selection Guide
and Product Data
This section has two parts:
• A Selection Guide that walks you through the process of
selecting the correct RUE device for a circuit.
• Product Data that outlines electrical characteristics,
physical characteristics, agency recognitions, environmental
specifications, component layouts, tape and reel specifications,
and ordering information for RUE devices.
RUE Selection Guide
Follow these seven steps to select a PolySwitch RUE device for
a circuit:
1. Define the operating parameters for the circuit.
These include:
• Maximum ambient operating temperature
• Normal operating current
• Maximum operating voltage (RUE is 30 V maximum)
• Maximum interrupt current
2. Select the RUE device that accommodates the circuit’s maximum
ambient operating temperature and normal operating current.
3. Compare the RUE device’s maximum operating voltage and maxi-
mum interrupt current with the circuit’s to be sure the circuit does not
exceed the device ratings.
4. Check the RUE device’s time-to-trip to be sure it will protect the
circuit.
5. Verify that the circuit’s ambient operating temperatures are within the
RUE device’s operating temperature range.
6. Verify that the RUE device’s dimensions fit the application’s space
considerations.
7. Independently evaluate and test the suitability and performance
of the RUE device in the application.
4
®
®
TUV Rheinland
Raychem Circuit Protection Devices
RUE Devices
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