Littelfuse 0274.010V Equivalent & Substitute Parts

Part Overview

The Littelfuse 0274.010V is a 10 mA, 125 V AC/DC board mount fuse with fast blow response time, designed for through-hole radial mounting in electronic circuits requiring overcurrent protection. This component is part of the MICRO™ 274 series and maintains active product status with full regulatory compliance. Equivalent substitute parts from the same manufacturer are available to support supply chain flexibility and design continuity across multiple production batches and inventory sources.

Substiute Parts

0274.010V

Littelfuse Inc.In Stock: 7590274.010V Datasheet

Current PartRFQ

0273.010V

Littelfuse Inc.In Stock: 12500273.010V Datasheet

Parametric EquivalentRFQ

0279.010V

Littelfuse Inc.In Stock: 9490279.010V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0274.010V are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Current Rating: 10 mA (exact match required)
• Voltage Rating (AC/DC): 125 V / 125 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Fuse Type: Board Mount, Cartridge Style Excluded (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Breaking Capacity: 10 kA @ Rated Voltage (exact match required)
• Size / Dimension: 0.250" Dia x 0.350" H (exact match required)
• DC Cold Resistance: 80 Ohms (exact match required)
• Melting I²t: 4.62E-07 (exact match required)
• Regulatory Compliance: CSA, QPL, UL (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The substitute parts 0273.010V and 0279.010V meet all critical electrical and mechanical parameters, differing only in series designation (MICRO™ 273 and MICRO™ 279 respectively) while maintaining identical functional specifications and regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—0274.010V, 0273.010V, and 0279.010V—are functionally equivalent and maintain active product status with identical regulatory certifications (CSA, QPL, UL) and ROHS3 compliance. Selection between these parts is based on inventory availability and supply chain requirements rather than technical performance differences. Each part carries full approval agency endorsement and is suitable for direct substitution in applications requiring 10 mA, 125 V AC/DC board mount fuses with fast blow response characteristics.

Frequently Asked Questions (FAQ)

Q: Can 0273.010V and 0279.010V be used interchangeably with 0274.010V?

A: Yes. All three parts share identical electrical specifications (10 mA, 125 V AC/DC, fast blow response), mechanical dimensions (0.250" Dia x 0.350" H), mounting configuration (through-hole radial), and regulatory certifications. The series designation difference (MICRO™ 274, 273, and 279) does not affect functional performance or compatibility.

Q: Are there any operating temperature differences between these substitute parts?

A: The 0274.010V does not specify an operating temperature range in the provided data. The 0273.010V and 0279.010V both specify -55°C ~ 85°C operating temperature. This difference does not affect substitution eligibility for applications within this temperature range.

Q: Do all three parts have the same breaking capacity?

A: Yes. All three parts have a breaking capacity of 10 kA at rated voltage, ensuring equivalent fault protection performance.

Q: Are there packaging or inventory considerations for selection?

A: All three parts are supplied in bulk packaging. Current inventory levels are: 0274.010V (733 pcs), 0273.010V (1164 pcs), and 0279.010V (883 pcs). Selection may be based on availability and supply chain logistics.

Q: Do these parts meet the same regulatory standards?

A: Yes. All three parts carry identical approvals: CSA, QPL, and UL certifications, with ROHS3 compliance and REACH unaffected status.