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HomeProductsCircuit ProtectionFuses0437004.WR
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0437004.WR - Littelfuse Inc.

Manufacturer Part Number
0437004.WR
Manufacturer
Littelfuse
Allelco Part Number
32D-0437004.WR
ECAD Model
Parts Description
FUSE BRD MNT 4A 32VAC 35VDC 1206
Package
1206 (3216 Metric)
Data sheet
Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 74230

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Specifications

0437004.WR Tech Specifications
Littelfuse Inc. - 0437004.WR technical specifications, attributes, parameters and parts with similar specifications to Littelfuse Inc. - 0437004.WR

Product Attribute Attribute Value  
Manufacturer Littelfuse  
Voltage Rating - DC 35 V  
Voltage Rating - AC 32 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 1.024  
Fuse Type Board Mount (Cartridge Style Excluded)  
DC Cold Resistance 0.022 Ohms  
Current Rating (Amps) 4 A  
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

WR

Manufacturer

littelfuse

Introduction

The 0437004.WR is a high-performance, fast-acting surface mount fuse from Littelfuse. It is designed to provide reliable overcurrent protection for a wide range of electronic applications, ensuring the safety and reliable operation of your devices.

Product Features and Performance

Current Rating: 4A

Voltage Rating: 32V AC, 35V DC

Fast Blow Response Time

1206 (3216 Metric) Package Size

50A Breaking Capacity at Rated Voltage

024 Melting I²t

-55°C to 150°C Operating Temperature Range

Product Advantages

Compact surface mount design for space-saving installation

Reliable overcurrent protection to safeguard sensitive electronic components

Fast response time to quickly interrupt fault conditions and prevent damage

Approved for use in CSA and UL listed applications

Key Reasons to Choose This Product

Exceptional reliability and performance in a small, space-efficient package

Versatile design suitable for a wide range of electronic applications

Rigorous safety and quality standards ensure long-term dependability

Trusted Littelfuse brand reputation for industry-leading circuit protection solutions

Quality and Safety Features

CSA and UL safety agency approvals

Robust construction and materials for reliable operation

Stringent manufacturing processes to ensure consistent quality

Compatibility

The 0437004.WR fuse is compatible with a wide range of electronic devices and applications requiring fast-acting overcurrent protection, including:

Consumer electronics

Industrial equipment

Automotive electronics

Telecommunications equipment

Medical devices

Application Areas

Circuit protection for sensitive electronic components

Overcurrent protection for power supplies, motors, and other electrical loads

Safety critical applications requiring reliable fault interruption

Product Lifecycle

The 0437004.WR is an active, in-production product from Littelfuse. There are no plans for discontinuation at this time. If you require information about equivalent or alternative models, please contact our website's sales team.

Parts with Similar Specifications

The three parts on the right have similar specifications to Littelfuse Inc. 0437004.WR

Product Attribute 0437004.WR 0437001.WRA 0437005.WR 0437003.WR
Part Number 0437004.WR 0437001.WRA 0437005.WR 0437003.WR
Manufacturer Littelfuse Inc. Littelfuse Inc. Littelfuse Inc. Littelfuse Inc.
Response Time Fast Blow Fast Blow Fast Blow Fast Blow
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) 0.126" 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 0.032' H (3.20mm x 1.63mm x 0.82mm)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Melting I²t 1.024 0.1 1.936 0.4
Package / Case 1206 (3216 Metric) 1206 (3216 Metric) 1206 (3216 Metric) 1206 (3216 Metric)
Color - - - -
Current Rating (Amps) 4 A 1 A 5 A 3 A
Voltage Rating - DC 35 V 63 V 35 V 35 V
Breaking Capacity @ Rated Voltage 50A 50A 50A 50A
Fuse Type Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded)
Voltage Rating - AC 32 V 63 V 32 V 32 V
DC Cold Resistance 0.022 Ohms - 0.016 Ohms 0.033 Ohms
Approval Agency CSA, UR CSA, cURus CSA, UR CSA, UR
Series 437 437A 437 437
Operating Temperature -55°C ~ 150°C -55°C ~ 150°C -55°C ~ 150°C -55°C ~ 150°C
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR)

0437004.WR Datasheet PDF

Download 0437004.WR pdf datasheets and Littelfuse Inc. documentation for 0437004.WR - Littelfuse Inc..

HTML Datasheet
Cylindrical Battery Holders.pdf
PCN Design/Specification
TF 437/ 501 Series Marking Chg 16/Jul/2015.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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0437004.WR

Littelfuse Inc.
32D-0437004.WR

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