View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsCircuit ProtectionFuses043703.5WR
043703.5WR Image
Image may be representation.
See specifications for product details.
EXPRESS OPTION
Payment method

043703.5WR - Littelfuse Inc.

Manufacturer Part Number
043703.5WR
Manufacturer
Littelfuse
Allelco Part Number
32D-043703.5WR
ECAD Model
Parts Description
FUSE BOARD MNT 3.5A 32VAC 35VDC
Package
1206 (3216 Metric)
Data sheet
Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 47060

Required fields are indicated by an asterisk (*)
Please send RFQ, we will respond immediately.

Quantity
EXPRESS OPTION
Payment method
Our certification

Specifications

043703.5WR Tech Specifications
Littelfuse Inc. - 043703.5WR technical specifications, attributes, parameters and parts with similar specifications to Littelfuse Inc. - 043703.5WR

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 0.576  
Fuse Type Board Mount (Cartridge Style Excluded)  
DC Cold Resistance 0.027 Ohms  
Current Rating (Amps) 3.5 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

5WR

Manufacturer

littelfuse

Introduction

The Littelfuse 043703.5WR is a high-performance surface mount fuse designed for circuit protection in a variety of electronic applications. This fast-acting fuse offers reliable overcurrent protection to safeguard sensitive electronic components and circuits.

Product Features and Performance

Current Rating: 3.5A

Voltage Rating: 32VAC, 35VDC

Fast-Blow Response Time

Surface Mount Packaging: 1206 (3216 Metric)

Breaking Capacity: 50A @ Rated Voltage

Melting I²t: 0.576

Operating Temperature Range: -55°C to 150°C

Low DC Cold Resistance: 0.027 Ohms

Product Advantages

Compact surface mount design for space-constrained applications

Reliable and fast-acting overcurrent protection

Excellent electrical performance and high breaking capacity

Approved by leading safety agencies (CSA, UR)

Wide operating temperature range

Key Reasons to Choose This Product

Robust circuit protection for sensitive electronics

Optimized for space-efficient board layouts

Proven reliability and safety certifications

Cost-effective solution for overcurrent protection

Quality and Safety Features

Compliant with leading safety standards (CSA, UR)

Rigorous quality control and testing procedures

Designed for long-term reliable performance

Compatibility

The Littelfuse 043703.5WR fuse is compatible with a wide range of electronic devices and equipment that require overcurrent protection, including:

Consumer electronics

Industrial automation and control systems

Telecommunications equipment

Automotive and transportation applications

Application Areas

General circuit protection

Overcurrent protection for electronic components

Safety-critical applications

Space-constrained designs

Product Lifecycle

The Littelfuse 043703.5WR is an active and widely available product. 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. 043703.5WR

Product Attribute 043703.5WR 043701.5WR 0438.250WR 04371.25WR
Part Number 043703.5WR 043701.5WR 0438.250WR 04371.25WR
Manufacturer Littelfuse Inc. Littelfuse Inc. Littelfuse Inc. Littelfuse Inc.
Voltage Rating - DC 35 V 63 V 63 V 63 V
Response Time Fast Blow Fast Blow Fast Blow Fast Blow
Color - - - -
Current Rating (Amps) 3.5 A 1.5 A 250 mA 1.25 A
Melting I²t 0.576 0.324 0.0017 0.256
Approval Agency CSA, UR CSA, UR CSA, UL CSA, UR
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 0.032' H (3.20mm x 1.63mm x 0.82mm) 0.061' L x 0.033' W x 0.020' H (1.54mm x 0.85mm x 0.50mm) 0.126' L x 0.064' W x 0.032' H (3.20mm x 1.63mm x 0.82mm)
Fuse Type Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded) Board Mount (Cartridge Style Excluded)
Series 437 437 438 437
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR)
Breaking Capacity @ Rated Voltage 50A 50A 50A 50A
Operating Temperature -55°C ~ 150°C -55°C ~ 150°C -55°C ~ 150°C -55°C ~ 150°C
DC Cold Resistance 0.027 Ohms 0.209 Ohms 2.024 Ohms 0.318 Ohms
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Voltage Rating - AC 32 V 63 V 32 V 63 V
Package / Case 1206 (3216 Metric) 1206 (3216 Metric) 0603 (1608 Metric) 1206 (3216 Metric)

043703.5WR Datasheet PDF

Download 043703.5WR pdf datasheets and Littelfuse Inc. documentation for 043703.5WR - 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

View More
043703.5WR Image

043703.5WR

Littelfuse Inc.
32D-043703.5WR

Want a better price? Please Add to Cart, we'll contact you immediately.

0 RFQ
Shopping cart (0 Items)
It is empty.
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB