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Series: USF 0402

Free Sample Request

Surface Mount Fuse, 1.05 x 0.55 mm, Super-Quick-Acting FF, 32 VDC

14 Variants

Description USF 0402


  • UL characteristic
  • Low melting I²t-values, fast interruption
  • Marking optional
  • Impermeable to potting compound

Unique Selling Proposition

  • Space constrained applications


  • Secondary Protection
  • Circuits without inrush
  • Semiconductor protection
  • Digital Consumer Electronics
Date Category Subcategory Title Download
18/10/2016 Products
Packaging Details
18/07/2016 Products
PCB Library Fuses
19/12/2017 Products
USF 0402 PCN new design

Rated Voltage

32 VDC

Rated current

0.25 - 5 A

Breaking Capacity

35 A


Super-Quick-Acting FF



Admissible Ambient Air Temp.

-55 °C to 90 °C

Climatic Category

55/125/21 acc. to IEC 60068-1

Material: Housing


Material: Terminals

Gold-Plated Copper Alloy

Unit Weight

0.004 g

Storage Conditions

0 °C to 60 °C, max. 70% r.h.

Product Marking

see table of variants

Soldering Methods

Soldering Profile


245 °C / 3 sec acc. to IEC 60068-2-58, Test Td

Resistance to Soldering Heat

260 +0/-5 °C / 30 sec acc. to IPC/JEDEC J-STD-020D, Level 1

Moisture Resistance Test

MIL-STD-202, Method 106E
(50 cycles in a temp./mister chamber)

Terminal Strength

MIL-STD-202, Method 211A
(Deflection of board 1 mm for 1 minute)

Case Resistance

acc. to EIA/IS-722, Test 4.7
>100 MΩ (between leeds and body)

Resistance to Solvents

MIL-STD-202, Method 215A


min. UL 94V-1
(acc. to EIA/IS-722, Test 4.12)

Detailed information on product approvals, code requirements, usage instructions and detailed test conditions can be looked up in  
Details about Approvals


The approval mark is used by the testing authorities to certify compliance with the safety requirements placed on electronic products.

Approval Reference Type: USF 0402

Approval Logo Certificates Certification Body Description
Approval marks UR UL UL File Number: E41599
Approval marks CSA CSA CSA Certification Record: 248899

Product standards

Product standards that are referenced

Organization Design Standard Description
Partners UL_Certification_Body Designed according to UL 248-14 Low voltage fuses - Part 14: Additional fuses
Partners CSA_Certification_Body Designed according to CSA22.2 No. 248.14 Low-Voltage Fuses - Part 14: Supplemental Fuses

Application standards

Application standards where the product can be used

Organization Design Standard Description
Partners IEC_Certification_Body Designed for applications acc. IEC/UL 60950 IEC 60950-1 includes the basic requirements for the safety of information technologyequipment.


The product complies with following Guide Lines

Identification Details Initiator Description
Environment_Safety RoHS_Logo_color_CMYK_tif SCHURTER AG EU Directive RoHS 2011/65/EU
Environment_Safety Halogenfrei_Logo_Farbig SCHURTER AG SCHURTER strives to offer our customers halogen free products.
Environment_Safety REACH SCHURTER AG On 1 June 2007, Regulation (EC) No 1907/2006 on the Registration, Evaluation, Authorization and Restriction of Chemicals 1 (abbreviated as "REACH") entered into force.


Picture(s) Selection of product pictures to display a specific variant of the type


Type Corresponds to a product series and includes various distinct variants. On the type of descriptive data are summarized, eg in the data sheet

Order Number

Order Number Unique part number for placing an order

Configuration key

Configuration key The configuration key of a product consists of the composite key values, which describe the different kinds of attribut distinction.

Model Description

Model Description Abbreviated description of the CAD model


IGS Also mentioned as IGES ( Initial Graphics Exchange Specification). Common program indipendent interchange format for 3D CAD data.


Step Also mentioned as STEP ( Standard for the Exchange of Product Model Data). Common program indipendent interchange format for 3D CAD data standardized according ISO standard.


Parasolid Parasolid modeling kernel is a 3D CAD systems. It is developed by a separate business unit within the Unigraphics Solutions (UGS), now Siemens PLM Software.


DXF (Drawing Interchange Format) is a specified by the Autodesk file format for CAD data exchange, and was developed for the 2D-CAD program AutoCAD. A DXF file describes a CAD model as plain text to the ASCII standard.

USF 0402
3414.0111.26 3414.0112.26 3414.0113.26 3414.0114.26 3414.0115.26 3414.0116.26 3414.0117.26 3414.0118.26 3414.0119.26 3414.0120.26 3414.0121.26 3414.0122.26 3414.0123.26 3414.0124.26
3414.01xx.xx The CAD-Model shows only ine fuse.

Dimension [mm]

Soldering pads

Derating Curves

Percentage of Rated Values [%]
Ambient Temperature [°C]

Pre-Arcing Time

Rated Current In 1.0 x In min 2.0 x In max
0.25 A - 5 A 4 h 60 s


Time in Seconds
Current in Amperes

Short Table of Variants USF 0402

Rated Current [A] Rated Voltage [VDC] Marking Order Number

Variant Details

The link on the respective order number refers to a separat tab with specific detailed information .

This assures better readable information of the selected product.
Change to the tab All Products in order to show details of another variant.

This approach offers to use generic alias link to the product details:

www.schurter.xx/art/ [Order Number]

where the following variables are used:
- xx is the country specific domain
- [Order Number]

A=Most Popular

A=Most Popular

Most popular products have the following customer benefits:

- previously ordered by multiple customers
- generally in stock for immediate delivery
- early adoption or mature life cycle

Contact us for availability on other product variants, lead-times vary:

Availability for all products can be searched real-time. Enter part number and required quantity:

Stock Check SCHURTER

Free Sample

Free Sample

Please ask for free sample in order to check if the products meets your requirement for your application. Send your delivery adress and your specific requirements.

Distributor Stock Check

Distributor Stock Check

The following links reffers to the inquiry form for distributors stock information of the selected products. It allows checking for the available amount and optionally to place an order at your selected partner.

Distributor Stock Check

Stock Check Distributor

0.25 32 Components Logo 3414.0111.26 ...
0.375 32 Components Logo 3414.0112.26 ...
0.5 32 Components Logo 3414.0113.26 ...
0.75 32 Components Logo 3414.0114.26 ...
1 32 Components Logo 3414.0115.26 ...
1.25 32 Components Logo 3414.0116.26 ...
1.5 32 Components Logo 3414.0117.26 ...
1.75 32 Components Logo 3414.0118.26 ...
2 32 Components Logo 3414.0119.26 ...
2.5 32 Components Logo 3414.0120.26 ...
3 32 Components Logo 3414.0121.26 ...
3.5 32 Components Logo 3414.0122.26 ...
4 32 Components Logo 3414.0123.26 ...
5 32 Components Logo 3414.0124.26 ...
1) 35 A @ 32 VDC

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