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C1Q 4 Board mount fast-acting chip fuse rated 4A, 125VAC/63VDC. Features low resistance of 0.028Ω and 100A AC breaking capacity.
Mfr Part #:

C1Q 4

Available from 2 distributors
Mfr Name: Bel Fuse
Bel Fuse
Board mount fast-acting chip fuse rated 4A, 125VAC/63VDC. Features low resistance of 0.028Ω and 100A AC breaking capacity.
Total Stock: 52,004 pcs

C1Q 4 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
50,000 pcs
50000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Non-Authorised Inventory information
2,004 pcs
2004 pcs On Request 1 On Request On Request N/A On Request On Request

C1Q 4 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Breaking Capacity @ Rated Voltage
Current Rating
Current Rating (Amps)
Fuse Type
Halogen Free
Height
Length
Melting I²t
Mounting Type
Nominal Cold Resistance
Nominal Power Dissipation
Nominal Volt-drop
Operating Temperature
Package / Case
Response Time
Tape & Reel
Termination Finish
Voltage Rating
Voltage Rating AC
Voltage Rating DC
Width

C1Q 4 Description

Short technical summary and product information.

The C1Q 4 is a surface mount fast-acting chip fuse from Bel Fuse's C1Q series. Rated for 4A continuous current with voltage ratings of 125VAC and 63VDC, it features a fast blow response time suitable for protecting sensitive circuits. With an interrupting rating of 100A AC and 50A DC, it can safely clear fault currents. The fuse has a nominal cold resistance of 0.028Ω and a melting I²t of 0.038 A²s. It is housed in a 1206 (3216 metric) package, measuring 3.20mm x 1.58mm x 0.58mm, making it ideal for compact SMD designs. Operating temperature range is -55°C to 125°C. The C1Q 4 is RoHS, REACH, and halogen-free compliant, and approved by CE, CSA, and cULus. Typical applications include notebook computers, LCD monitors, power supplies, and DC-DC converters.

C1Q 4 Quick Information

Product Type: Board Mount Chip Fuse
Series: C1Q
Canonical Name: C1Q 4 Board Mount Fast-Acting Chip Fuse
Subcategory: Board Mount Chip Fuse

C1Q 4 Compliance

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

C1Q 4 Features

  • Fast-acting chip fuse for overcurrent protection.
  • Rated 4A with 125VAC and 63VDC voltage.
  • Breaking capacity of 100A AC and 50A DC.
  • Low resistance of 0.028Ω for minimal loss.
  • Surface mount 1206 package for compact designs.

C1Q 4 Applications

  • Used in notebook and LCD monitor power circuits.
  • Ideal for power supply and DC-DC converter protection.
  • Suitable for industrial and medical equipment.
  • Applied in POE and POE+ systems.

C1Q 4 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the C1Q 4 fuse?

4 A.

What is the voltage rating of the C1Q 4?

125 VAC and 63 VDC.

What is the breaking capacity of this fuse?

100 A AC and 50 A DC at rated voltage.

Is the C1Q 4 a fast-acting fuse?

Yes, it is a fast blow fuse.

What package does the C1Q 4 come in?

1206 (3216 Metric) surface mount package.

What is the operating temperature range?

-55°C to 125°C.

What is the melting I²t value?

0.038 A²s at 10 In.

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