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HomeProductsCircuit ProtectionFuses0437.250WR
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0437.250WR - Littelfuse Inc.

Manufacturer Part Number
0437.250WR
Manufacturer
Littelfuse
Allelco Part Number
32D-0437.250WR
ECAD Model
Parts Description
FUSE BOARD MNT 250MA 125VAC/VDC
Package
1206 (3216 Metric)
Data sheet
437 Series.pdf
437 Series.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 92010

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Our certification

Specifications

0437.250WR Tech Specifications
Littelfuse Inc. - 0437.250WR technical specifications, attributes, parameters and parts with similar specifications to Littelfuse Inc. - 0437.250WR

Product Attribute Attribute Value  
Manufacturer Littelfuse  
Voltage Rating - DC 125 V  
Voltage Rating - AC 125 V  
Size / Dimension 0.126" L x 0.064" W x 0.032" H (3.20mm x 1.63mm x 0.82mm)  
Series 437  
Response Time Fast Blow  
Package / Case 1206 (3216 Metric)  
Package Tape & Reel (TR)  
Operating Temperature -55°C ~ 150°C  
Product Attribute Attribute Value  
Mounting Type Surface Mount  
Melting I²t 0.003  
Fuse Type Board Mount (Cartridge Style Excluded)  
DC Cold Resistance 2.29 Ohms  
Current Rating (Amps) 250 mA  
Color -  
Breaking Capacity @ Rated Voltage 50A  
Approval Agency CSA, UR  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.10.0040

Parts Introduction

Manufacturer Part Number

250WR

Manufacturer

littelfuse

Introduction

The 0437.250WR is a high-performance, surface-mount fuse from Littelfuse that provides reliable circuit protection in a compact 1206 (3216 metric) package. Designed for a wide range of applications, this fuse offers robust performance and safety features to safeguard sensitive electronic devices.

Product Features and Performance

Rated for 250 mA current capacity

125 VAC and 125 VDC voltage ratings

Fast-blow response time for rapid overcurrent protection

50A breaking capacity at rated voltage

003 melting I²t value for precise and consistent operation

Operates across a wide temperature range of -55°C to 150°C

Product Advantages

Compact and space-saving 1206 (3216 metric) package

Reliable circuit protection in a small form factor

Suitable for a variety of electronic applications

Compliant with CSA and UL safety standards

Key Reasons to Choose This Product

Robust and reliable circuit protection

Compact size for efficient board layout

Wide operating temperature range

Fast-acting response to overcurrent conditions

Comprehensive safety certifications for peace of mind

Quality and Safety Features

CSA and UL safety approvals

Strict quality control and manufacturing processes

Designed for long-lasting performance and reliability

Compatibility

This fuse is compatible with a wide range of electronic devices and circuits, making it a versatile choice for various applications.

Application Areas

Consumer electronics

Industrial equipment

Telecommunications systems

Automotive electronics

Power supplies

Medical devices

Product Lifecycle

The 0437.250WR is an active and currently available product. There are no direct equivalent or alternative models available at this time. If you require further information or assistance, please contact our website's sales team.

Parts with Similar Specifications

The three parts on the right have similar specifications to Littelfuse Inc. 0437.250WR

Product Attribute 0437.250WR 0437001.WRA 04351.25KRHF 0437001.WR
Part Number 0437.250WR 0437001.WRA 04351.25KRHF 0437001.WR
Manufacturer Littelfuse Inc. Littelfuse Inc. Littelfuse Inc. Littelfuse Inc.
Voltage Rating - AC 125 V 63 V - 63 V
Size / Dimension 0.126" L x 0.064" W x 0.032" H (3.20mm x 1.63mm x 0.82mm) 0.126" L x 0.064" W x 0.033" H (3.20mm x 1.63mm x 0.84mm) 0.039' L x 0.020' W x 0.013' H (1.00mm x 0.51mm x 0.33mm) 0.126' L x 0.064' W x 0.032' H (3.20mm x 1.63mm x 0.82mm)
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR)
Color - - - -
Approval Agency CSA, UR CSA, cURus CSA, UL CSA, UR
Operating Temperature -55°C ~ 150°C -55°C ~ 150°C -55°C ~ 90°C -55°C ~ 150°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 1206 (3216 Metric) 1206 (3216 Metric) 0402 (1005 Metric) 1206 (3216 Metric)
Breaking Capacity @ Rated Voltage 50A 50A 35A 50A
Series 437 437A 435 437
DC Cold Resistance 2.29 Ohms - 0.06 Ohms 0.36 Ohms
Voltage Rating - DC 125 V 63 V 32 V 63 V
Current Rating (Amps) 250 mA 1 A 1.25 A 1 A
Response Time Fast Blow Fast Blow Fast Blow Fast Blow
Melting I²t 0.003 0.1 0.035 0.1
Fuse Type Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded)

0437.250WR Datasheet PDF

Download 0437.250WR pdf datasheets and Littelfuse Inc. documentation for 0437.250WR - Littelfuse Inc..

Datasheets
437 Series.pdf
HTML Datasheet
437 Series.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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0437.250WR Image

0437.250WR

Littelfuse Inc.
32D-0437.250WR

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