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HomeProductsCircuit ProtectionPTC Resettable FusesTR250-145U
TR250-145U Image
Image may be representation.
See specifications for product details.

TR250-145U - Littelfuse Inc.

Manufacturer Part Number
TR250-145U
Manufacturer
Littelfuse
Allelco Part Number
32D-TR250-145U
ECAD Model
Parts Description
PTC RESET FUSE 250V 145MA RADIAL
Detailed Description
Package
Radial, Disc
Data sheet
TR250-145U.pdf
In stock: 3930

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Quantity

Specifications

TR250-145U Tech Specifications
Littelfuse Inc. - TR250-145U technical specifications, attributes, parameters and parts with similar specifications to Littelfuse Inc. - TR250-145U

Product Attribute Attribute Value  
Manufacturer Littelfuse  
Voltage - Max 250V (60V Int)  
Type Polymeric  
Time to Trip 2 s  
Thickness (Max) -  
Size / Dimension 0.236' L x 0.150' W (6.00mm x 3.80mm)  
Series PolySwitch®  
Resistance - Post Trip (R1) (Max) 12 Ohms  
Resistance - Initial (Ri) (Min) 3.5 Ohms  
Ratings -  
Product Attribute Attribute Value  
Package / Case Radial, Disc  
Package Bulk  
Operating Temperature -40°C ~ 85°C  
Mounting Type Through Hole  
Lead Spacing 0.197' (5.00mm)  
Height - Seated (Max) 0.394' (10.00mm)  
Current - Max 3 A  
Current - Hold (Ih) (Max) 145 mA  
Approval Agency -  

Parts Introduction

Manufacturer Part Number

TR250-145U

Manufacturer

littelfuse

Introduction

The TR250-145U is a PolySwitch® polymeric resettable fuse from Littelfuse. It provides reliable circuit protection against overcurrent and overtemperature conditions, automatically resetting once the fault is removed. This compact and cost-effective solution is designed for a wide range of applications.

Product Features and Performance

Voltage rating up to 250V (60V internal)

Hold current of 145mA

Maximum current rating of 3A

Time to trip: 2 seconds

Initial resistance of 3.5 ohms

Post-trip resistance of up to 12 ohms

Operating temperature range of -40°C to 85°C

Product Advantages

Automatic resetting for easy circuit restoration

Compact and space-saving design

Cost-effective circuit protection solution

Reliable performance in a wide range of applications

Key Reasons to Choose This Product

Proven PolySwitch® technology for reliable circuit protection

Versatile design suitable for various application requirements

Easy integration and installation

Robust performance in challenging environments

Quality and Safety Features

Compliant with relevant safety and quality standards

Durable construction for long-lasting performance

Compatibility

Suitable for a wide range of electronic devices and circuits

Application Areas

Consumer electronics

Household appliances

Industrial equipment

Telecommunications equipment

Automotive electronics

Product Lifecycle

The TR250-145U is an obsolete product, meaning it is no longer in active production. However, Littelfuse offers alternative PolySwitch® models that may be suitable replacements. Customers are advised to contact our website's sales team for more information on available options and compatibility.

Parts with Similar Specifications

The three parts on the right have similar specifications to Littelfuse Inc. TR250-145U

Product Attribute TR250-145U TR2/TCP1.25A TR250-145-2 TR2/6125FF5-R
Part Number TR250-145U TR2/TCP1.25A TR250-145-2 TR2/6125FF5-R
Manufacturer Littelfuse Inc. COOPER TYCO/RAYCHEM Eaton - Electronics Division
Resistance - Post Trip (R1) (Max) 12 Ohms - - -
Time to Trip 2 s - - -
Approval Agency - - - cULus
Current - Max 3 A - - -
Thickness (Max) - - - -
Package Bulk - - Tape & Reel (TR)
Height - Seated (Max) 0.394' (10.00mm) - - -
Resistance - Initial (Ri) (Min) 3.5 Ohms - - -
Operating Temperature -40°C ~ 85°C - - -55°C ~ 125°C
Size / Dimension 0.236' L x 0.150' W (6.00mm x 3.80mm) - - 0.240' L x 0.107' W x 0.107' H (6.10mm x 2.72mm x 2.72mm)
Type Polymeric - - -
Ratings - - - -
Current - Hold (Ih) (Max) 145 mA - - -
Voltage - Max 250V (60V Int) - - -
Package / Case Radial, Disc - - 2410 (6125 Metric)
Mounting Type Through Hole - - Surface Mount
Series PolySwitch® - - 6125FF
Lead Spacing 0.197' (5.00mm) - - -

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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TR250-145U Image

TR250-145U

Littelfuse Inc.
32D-TR250-145U

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