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0034.4221 This is a 1A Fast-Blow fuse rated for 125VAC/VDC with a 100A breaking capacity. It comes in a radial lead through-hole package.
Mfr Part #:

0034.4221

Available from 2 distributors
Mfr Name: Schurter Inc.
Schurter Inc.
This is a 1A Fast-Blow fuse rated for 125VAC/VDC with a 100A breaking capacity. It comes in a radial lead through-hole package.
Total Stock: 1,337 pcs

0034.4221 Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,332 pcs
1332 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
5 pcs
5 pcs On Request 1 On Request On Request On Request On Request On Request

0034.4221 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Breaking Capacity
Breaking Capacity @ Rated Voltage
Climatic Category
Current Rating
Current Rating (Amps)
Diameter
Flammability Rating
Fuse Type
Height
Housing Material
Insulation Resistance
Lead Spacing
Lead Style
Mechanical Shock
Melting I²t
Mounting Type
Operating Temperature
Operating Temperature Range
Operational Life
Package / Case
Product Standards
Response Time
Solderability
Soldering Heat Resistance
Soldering Method
Solvent Resistance
Storage Conditions
Tape & Reel
Terminal Material
Terminal Strength
Termination Style
Vibration Resistance
Voltage Rating
Voltage Rating AC
Voltage Rating DC
Weight

0034.4221 Description

Short technical summary and product information.

The Schurter 0034.4221 is a subminiature fast-acting (quick-acting) fuse designed for board mounting with through-hole terminals. It is part of the MSF 125 series and is rated for 1A at 125VAC and 125VDC.

 

The fuse has a breaking capacity of 100A at rated voltage and a melting I²t of 0.07 A²s. Its fast-blow characteristic provides rapid overcurrent protection for sensitive circuits. The insulation resistance exceeds 100 MΩ, and operational life is tested for 1000 hours at 0.60 times rated current at 70°C.

 

The fuse features a thermoplastic housing with UL 94V-0 flammability rating and tin-plated copper terminals. It is designed for wave soldering with solderability at 235°C for 2 seconds and heat resistance up to 260°C for 10 seconds. Operating temperature range is -25°C to 85°C. It complies with MIL-STD-202 for vibration, shock, and solvent resistance.

 

The fuse is approved to UL 248-14, CSA22.2 No. 248.14, and IEC/UL 62368-1, with cURus agency approval. It is RoHS3 compliant and has MSL 1 (unlimited) moisture sensitivity. The package is a radial, can style with a diameter of 6.4 mm and height of 8.8 mm.

0034.4221 Quick Information

Product Type: Board Mount Fuse
Series: MSF 125
Canonical Name: Schurter MSF 125 1A Fast-Blow Board Mount Fuse
Subcategory: Radial Lead Fuse

0034.4221 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

0034.4221 Features

  • Rated 1A at 125VAC and 125VDC.
  • Fast-blow response for sensitive circuits.
  • 100A breaking capacity at rated voltage.
  • Radial through-hole board mount package.
  • cURus approved and UL 248-14 compliant.

0034.4221 Applications

  • Overcurrent protection in power supply circuits.
  • Protection of industrial control electronics.
  • Used in consumer electronics and appliances.
  • Ideal for PCB applications requiring fast acting.

0034.4221 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the 0034.4221 fuse?

The current rating is 1 A.

What is the voltage rating of this fuse?

It is rated for 125 VAC and 125 VDC.

What is the breaking capacity of the 0034.4221?

The breaking capacity is 100 A at 125VAC/VDC.

What is the response time characteristic?

It has a fast-blow (quick-acting) characteristic.

What package type is this fuse available in?

It comes in a radial, can package with through-hole mounting.

What is the operating temperature range?

-25°C to 85°C.

What approvals does this fuse have?

It is cURus approved and complies with UL 248-14, CSA22.2, and IEC/UL 62368-1.

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