Littelfuse 0274.200V Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0274.200V is a 200 mA, 125 V AC/DC board mount fuse designed for through-hole radial, can, vertical mounting applications. This fast-blow fuse is part of the MICRO™ 274 series and carries active product status with full compliance to CSA, QPL, and UL approval agencies. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component procurement, inventory management, or design flexibility while maintaining identical functional performance in circuit protection applications.

Substiute Parts

0274.200V

Littelfuse Inc.In Stock: 8170274.200V Datasheet

Current PartRFQ

0273.200V

Littelfuse Inc.In Stock: 16130273.200V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0274.200V are identified based on strict equivalence across the following critical parameters:

• Current Rating: 200 mA (exact match required)
• Voltage Rating: 125 V AC and 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Breaking Capacity: 10 kA @ Rated Voltage (exact match required)
• Physical Dimensions: 0.250" Dia x 0.350" H (exact match required)
• DC Cold Resistance: 2.3 Ohms (exact match required)
• Melting I²t: 0.00409 (exact match required)
• Approval Agencies: CSA, QPL, UL (exact match required)
• Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The 0273.200V meets all substitution criteria and is classified as a parametric equivalent. Both parts are manufactured by Littelfuse Inc. and belong to the same product category of board mount fuses with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 0274.200V and 0273.200V are active products manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability, lead time, or procurement source. The 0273.200V is part of the MICRO™ 273 series, while the 0274.200V belongs to the MICRO™ 274 series; however, this series designation does not affect functional equivalence or circuit performance.

Both parts carry full compliance with CSA, QPL, and UL approval agencies, ROHS3 compliance, and REACH unaffected status, ensuring regulatory and environmental compliance for applications requiring these certifications.

Frequently Asked Questions (FAQ)

Q: Can the 0273.200V be used as a direct replacement for the 0274.200V?

A: Yes. The 0273.200V is a parametric equivalent with identical current rating (200 mA), voltage ratings (125 V AC/DC), response time (Fast Blow), mounting type (Through Hole), package configuration (Radial, Can, Vertical), breaking capacity (10 kA), physical dimensions (0.250" Dia x 0.350" H), DC cold resistance (2.3 Ohms), and melting I²t (0.00409). Both parts meet CSA, QPL, and UL approval requirements.

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

A: The 0274.200V does not specify an operating temperature range in the provided data. The 0273.200V specifies -55°C ~ 85°C. This difference does not affect substitution eligibility based on the electrical and mechanical parameters that determine functional equivalence.

Q: Do both parts have the same physical footprint?

A: Yes. Both the 0274.200V and 0273.200V have identical dimensions of 0.250" Dia x 0.350" H (6.35 mm x 8.89 mm) and use the same through-hole radial, can, vertical mounting configuration. PCB layout and mounting hole spacing are identical.

Q: What is the difference between the MICRO™ 274 and MICRO™ 273 series?

A: Both series are manufactured by Littelfuse Inc. and contain fuses with identical electrical and mechanical specifications for this particular part number combination. The series designation reflects product line organization but does not indicate functional differences for the 0274.200V and 0273.200V equivalents.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 0274.200V and 0273.200V are ROHS3 Compliant and REACH Unaffected, meeting environmental and regulatory requirements for applications requiring these certifications.