Littelfuse 0318007.VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0318007.VXP is a 7 A, 250 V AC/DC fast-blow glass cartridge fuse designed for through-hole mounting in 3AB and 3AG package configurations. This fuse is classified as Active product status and carries multiple international approvals including CE, CSA, KC, PSE, and UL certifications. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product series, ensuring direct interchangeability without circuit redesign or performance compromise.

Substiute Parts

0318007.VXP

Littelfuse Inc.In Stock: 6810318007.VXP Datasheet

Current PartRFQ

0318007.HXP

Littelfuse Inc.In Stock: 10640318007.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0318007.VXP are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution criteria are:

• Current Rating: 7 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 200 A (exact match required)
• Melting I²t: 118 (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• DC Cold Resistance: 0.0146 Ohms (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Approval Agencies: CE, CSA, KC, PSE, UL (exact match required)

Only parts meeting all these criteria are classified as direct substitutes within the same product series.

Parameter Comparison

Engineering Selection Recommendations

Both the 0318007.VXP and 0318007.HXP are Active product status components manufactured by Littelfuse Inc. within the 318 series. Both parts carry identical international regulatory approvals (CE, CSA, KC, PSE, UL) and maintain ROHS3 compliance. The parts are electrically and mechanically equivalent across all specified parameters, including current rating, voltage rating, response time, package configuration, breaking capacity, and thermal characteristics. Selection between these parts may be based on inventory availability or supply chain considerations, as no technical differentiation exists between them.

Frequently Asked Questions (FAQ)

Q: Can 0318007.HXP be used as a direct replacement for 0318007.VXP?

A: Yes. Both parts are identical across all electrical and mechanical parameters, including current rating (7 A), voltage rating (250 V AC), response time (Fast Blow), package configuration (3AB, 3AG, 1/4" x 1-1/4"), breaking capacity (200 A), and thermal operating range (-55°C ~ 125°C). Direct substitution is permissible without circuit modification.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical regulatory approvals (CE, CSA, KC, PSE, UL) and maintain ROHS3 compliance status. REACH status is identical (REACH Unaffected) for both parts.

Q: What determines whether a fuse can substitute for the 0318007.VXP?

A: Substitution requires exact equivalence across current rating, voltage rating, response time, package type, fuse construction (glass cartridge), mounting method (through hole), breaking capacity, melting I²t value, operating temperature range, and DC cold resistance. Any deviation in these parameters disqualifies a part from direct substitution.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts share identical dimensions of 0.275" diameter by 1.288" length (6.99mm x 32.72mm) and are configured for 3AB and 3AG package standards with 1/4" x 1-1/4" axial mounting.

Q: What is the significance of the melting I²t value in fuse selection?

A: The melting I²t value (118 for both parts) defines the thermal energy required to melt the fuse element. Identical I²t values ensure identical response characteristics and protection performance in the circuit. This parameter must match exactly for proper substitution.