Andrew
Andrew Content Marketer
On Jun 8, 2025

3403.0166.24 Surface Mount Fuses by Schurter – Compact Protection for High-Density Circuits

The Surface Mount Fuses 3403.0166.24  by Schurter are precision-engineered, time-lag fuses designed for PCB-level overcurrent protection in compact electronics. These 125V-rated, 250mA fuses deliver stable and dependable circuit protection with fast installation via surface-mount technology (SMT). Designed for use in power supplies, telecom equipment, and portable devices, they offer exceptional performance in space-limited environments.

In this blog, we’ll explore the specifications, benefits, wiring layout, and where to download datasheets or purchase the product from Xon Electronics. If you’re building compact electronics that require certified circuit protection, these fuses are an excellent choice.


Technical Specifications of 3403.0166.24

  • Manufacturer: Schurter

  • Part Number: 3403.0166.24

  • Type: Time-Lag Surface Mount Fuse

  • Rated Current: 250mA

  • Rated Voltage: 125V AC/DC

  • Breaking Capacity: 35A @ 125V AC / 50A @ 125V DC

  • Fuse Characteristic: Time-Lag (T)

  • Mounting Type: Surface Mount (SMD)

  • Approval Agencies: UL, CSA, VDE

  • Operating Temperature: -55°C to +90°C

  • Dimensions: 6.1 x 2.5 x 2.5 mm

  • Category: Circuit Protection, Fuses, Surface Mount Fuses

These fuses are ideal for demanding circuit designs requiring stable operation and certification compliance.


Key Features of 3403.0166.24 Fuse

  • Compact 0603 Package – Perfect for high-density PCBs

  • Time-Lag Response – Handles inrush currents with reliability

  • High Breaking Capacity – Up to 50A for robust protection

  • Global Certifications – UL, CSA, VDE approved

  • Easy SMT Integration – Reduces assembly time and improves reliability

These characteristics make the 3403.0166.24 Surface Mount Fuses by Schurter a go-to solution for engineers developing next-gen electronics.


Applications of 3403.0166.24 Fuse

The 3403.0166.24 Surface Mount Fuses by Schurter are widely used in:

  • AC-DC Power Supplies

  • Telecommunication Equipment

  • Industrial Control Modules

  • Portable and Wearable Devices

  • Consumer Electronics

  • Embedded System Designs

For compact and power-sensitive applications, these fuses offer dependable protection with minimal footprint.


Wiring and Connection Overview

[Input] — Connect fuse in series with the load path on PCB trace

[Output] — Fuse opens upon exceeding rated current, preventing circuit damage

Being SMT-compatible, these fuses are soldered directly onto the PCB during reflow soldering, streamlining your production line.


Use Case Scenario: Embedded Sensor Device

Scenario: An IoT manufacturer required a miniature fuse for their sensor node powered by a small battery pack.

Problem: Previous fuses lacked proper inrush current tolerance and failed prematurely.

Solution: The 3403.0166.24 Surface Mount Fuses by Schurter provided time-lag protection with high breaking capacity and compact size.

Result: Fewer field failures, longer device uptime, and simplified manufacturing using SMT.


Download Datasheet for 3403.0166.24

Need electrical curves, compliance information, or installation specs?

Download 3403.0166.24 Datasheet from Xon Electronics


Why Buy from Xon Electronics?

At Xon Electronics, we provide access to premium components like the 3403.0166.24 Surface Mount Fuses by Schurter with:

  • 100% Original Schurter Devices
  • Global Shipping – USA, India, Australia, Europe & more
  • OEM Pricing & Bulk Discounts
  • Expert Tech Support
  • Secure Online Checkout

Shop with confidence at www.xonelec.com.


Conclusion

The 3403.0166.24 Surface Mount Fuses by Schurter combine compact size, high breaking capacity, and reliable time-lag response in a globally certified package. Whether you're designing consumer electronics or industrial equipment, these fuses ensure safe, long-lasting circuit protection. Available now at Xon Electronics with international shipping options.


FAQs – 3403.0166.24 SMT Fuse

Q1. What is the rated voltage and current of this fuse?
125V and 250mA.

Q2. Is this a time-lag fuse?
Yes, it features time-lag characteristics (slow blow).

Q3. Can I use it in portable devices?
Absolutely, its compact size is ideal for wearables and handheld electronics.

Q4. Does it support surface mounting?
Yes, it is designed for reflow soldering on SMT PCB layouts.

Q5. Where can I buy this fuse with international delivery?
Purchase from www.xonelec.com with shipping to USA, India, Australia, Europe, and other countries.




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