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HomeProductsCircuit ProtectionPTC Resettable FusesTRF250-120-2
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TRF250-120-2 - Littelfuse Inc.

Manufacturer Part Number
TRF250-120-2
Manufacturer
Littelfuse
Allelco Part Number
32D-TRF250-120-2
ECAD Model
Parts Description
PTC RESET FUSE 60V 120MA RADIAL
Package
Radial, Disc
Data sheet
Telecom/Networking Devices Catalog.pdf
TRF250-120 Spec.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 105480

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Specifications

TRF250-120-2 Tech Specifications
Littelfuse Inc. - TRF250-120-2 technical specifications, attributes, parameters and parts with similar specifications to Littelfuse Inc. - TRF250-120-2

Product Attribute Attribute Value  
Manufacturer Littelfuse  
Voltage - Max 60V (250V Int)  
Type Polymeric  
Time to Trip 2.5 s  
Thickness (Max) -  
Size / Dimension 0.256' L x 0.181' W (6.50mm x 4.60mm)  
Series PolySwitch®, TRF250  
Resistance - Post Trip (R1) (Max) 16 Ohms  
Resistance - Initial (Ri) (Min) 4 Ohms  
Ratings -  
Product Attribute Attribute Value  
Package / Case Radial, Disc  
Package Tape & Reel (TR)  
Operating Temperature -40°C ~ 85°C  
Mounting Type Through Hole  
Lead Spacing 0.197' (5.00mm)  
Height - Seated (Max) 0.433' (11.00mm)  
Current - Trip (It) 240 mA  
Current - Max 3 A  
Current - Hold (Ih) (Max) 120 mA  
Approval Agency CSA, TUV, UL  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8533.40.8070

Parts Introduction

Manufacturer Part Number

TRF250-120-2

Manufacturer

littelfuse

Introduction

The littelfuse TRF250-120-2 is a compact, through-hole, polymeric resettable fuse designed for circuit protection applications. It offers reliable overcurrent and overtemperature protection, helping to safeguard sensitive electronic devices from damage caused by fault conditions.

Product Features and Performance

Polymeric positive temperature coefficient (PPTC) device

Holds up to 120mA of current

Trips at 240mA

Maximum current rating of 3A

Fast time-to-trip of 2.5 seconds

Wide operating temperature range of -40°C to 85°C

Initial resistance of 4 ohms, maximum post-trip resistance of 16 ohms

Compact radial disc package with 0.197" lead spacing

Product Advantages

Reliable overcurrent and overtemperature protection

Resettable design for easy recovery after fault conditions

Small size for space-constrained applications

Lead-free and RoHS compliant

Key Reasons to Choose This Product

Proven PolySwitch® technology for dependable circuit protection

Compact size and through-hole mounting for easy integration

Wide operating temperature range for use in diverse environments

Certified to industry safety standards, including CSA, TUV, and UL

Quality and Safety Features

Certified to CSA, TUV, and UL safety standards

RoHS compliant for environmental responsibility

Compatibility

The TRF250-120-2 is suitable for a variety of electronic applications, including:

Consumer electronics

Industrial equipment

Telecommunications devices

Automotive electronics

Application Areas

Circuit protection for overcurrent and overtemperature conditions

Safeguarding sensitive electronic components

Preventing damage from fault conditions

Product Lifecycle

The TRF250-120-2 is an active product, currently in production. Littelfuse offers several equivalent and alternative PolySwitch® resettable fuse models that may also be suitable for your application. We recommend contacting our website's sales team for the most up-to-date information on product availability and recommended alternatives.

Parts with Similar Specifications

The three parts on the right have similar specifications to Littelfuse Inc. TRF250-120-2

Product Attribute TRF250-120-2 TRF250-145T TRF250-180 TRF250-120
Part Number TRF250-120-2 TRF250-145T TRF250-180 TRF250-120
Manufacturer Littelfuse Inc. Littelfuse Inc. Littelfuse Inc. Littelfuse Inc.
Series PolySwitch®, TRF250 PolySwitch®, TRF250 PolySwitch®, TRF250 PolySwitch®, TRF250
Resistance - Initial (Ri) (Min) 4 Ohms 5.4 Ohms 800 mOhms 4 Ohms
Current - Max 3 A 3 A 10 A 3 A
Lead Spacing 0.197' (5.00mm) 0.197" (5.00mm) 0.197' (5.00mm) 0.197' (5.00mm)
Voltage - Max 60V (250V Int) 60V (250V Int) 100V (250V Int) 60V (250V Int)
Resistance - Post Trip (R1) (Max) 16 Ohms 14 Ohms 4 Ohms 16 Ohms
Ratings - - - -
Current - Trip (It) 240 mA 290 mA 650 mA 240 mA
Height - Seated (Max) 0.433' (11.00mm) 0.433" (11.00mm) 0.472' (12.00mm) 0.433' (11.00mm)
Package / Case Radial, Disc Radial, Disc Radial, Disc Radial, Disc
Time to Trip 2.5 s 2.5 s 2 s 2.5 s
Package Tape & Reel (TR) Bag Bulk Bag
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Type Polymeric Polymeric Polymeric Polymeric
Approval Agency CSA, TUV, UL CSA, TUV, UL CSA, TUV, UL CSA, TUV, UL
Mounting Type Through Hole Through Hole Through Hole Through Hole
Thickness (Max) - - - -
Size / Dimension 0.256' L x 0.181' W (6.50mm x 4.60mm) 0.256" L x 0.181" W (6.50mm x 4.60mm) 0.354' Dia x 0.150' T (9.00mm x 3.80mm) 0.256' L x 0.181' W (6.50mm x 4.60mm)
Current - Hold (Ih) (Max) 120 mA 145 mA 180 mA 120 mA

TRF250-120-2 Datasheet PDF

Download TRF250-120-2 pdf datasheets and Littelfuse Inc. documentation for TRF250-120-2 - Littelfuse Inc..

PCN Packaging
2.73KHz.pdf
HTML Datasheet
Telecom/Networking Devices Catalog.pdf TRF250-120 Spec.pdf

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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TRF250-120-2 Image

TRF250-120-2

Littelfuse Inc.
32D-TRF250-120-2

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