Littelfuse 0312.175VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0312.175VXP is a 175 mA, 250 V AC/DC fast-blow glass cartridge fuse designed for 3AB and 3AG holder applications. This component provides overcurrent protection in electrical circuits requiring fast response characteristics. The part is currently active in production with full inventory availability. Substitute parts may be required due to supply chain constraints, regional availability, or specific procurement requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

0312.175VXP

Littelfuse Inc.In Stock: 11350312.175VXP Datasheet

Current PartRFQ

0312.175HXP

Littelfuse Inc.In Stock: 7700312.175HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0312.175HXP qualifies as a parametric equivalent to the 0312.175VXP based on the following critical substitution criteria:

Electrical Parameters (Must Match Exactly):

• Current Rating: 175 mA
• Voltage Rating (AC): 250 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 35 A
• Melting I²t: 0.0096
• DC Cold Resistance: 3.875 Ohms

Mechanical Parameters (Must Match Exactly):

• Fuse Type: Cartridge, Glass
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)
• Mounting Type: Requires Holder

Compliance & Environmental (Must Match Exactly):

• Approval Agencies: CE, CSA, UL
• Operating Temperature Range: -55°C to 125°C
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Both parts are manufactured by Littelfuse Inc., belong to the 312 series, and maintain active product status. The substitute part meets all specified parameters without deviation.

Parameter Comparison

Engineering Selection Recommendations

Both the 0312.175VXP and 0312.175HXP are active production components from Littelfuse Inc. with identical electrical, mechanical, and compliance specifications. Selection between these parts should be based on:

Availability: The 0312.175VXP maintains 1112 pieces in stock, while the 0312.175HXP has 723 pieces available. Either part can be selected based on procurement lead time and inventory requirements.

Regulatory Compliance: Both parts carry CE, CSA, and UL approvals, meeting international safety standards. Both are ROHS3 compliant and REACH unaffected, suitable for applications requiring environmental compliance.

Thermal Performance: Both parts operate across the identical temperature range of -55°C to 125°C, ensuring equivalent thermal performance in all specified operating conditions.

Electrical Characteristics: Identical current rating, voltage rating, breaking capacity, and melting I²t values ensure equivalent circuit protection performance.

Frequently Asked Questions (FAQ)

Q: Can the 0312.175HXP be used as a direct replacement for the 0312.175VXP?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (175 mA, 250 V AC), response characteristics (fast blow), mechanical dimensions (0.250" Dia x 1.250" L), and holder compatibility (3AB, 3AG). No circuit modifications are required.

Q: Are there any differences in holder compatibility?

A: No. Both parts use the same package specification (3AB, 3AG, 1/4" x 1-1/4") and require identical holder types. Physical installation is identical.

Q: Do both parts meet the same safety certifications?

A: Yes. Both parts carry CE, CSA, and UL approvals. Both are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: What is the difference between the part numbers VXP and HXP?

A: The part numbers differ only in the suffix designation (VXP versus HXP). All specified electrical, mechanical, and compliance parameters are identical. The suffix variation reflects internal Littelfuse manufacturing or distribution coding.

Q: Are the thermal operating ranges the same?

A: Yes. Both parts operate across -55°C to 125°C, providing identical thermal performance in all specified conditions.

Q: Can I mix these parts in the same application?

A: Yes. Since all electrical and mechanical parameters are identical, both parts can be used interchangeably within the same circuit or system without performance variation.