Littelfuse 0315007.H Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0315007.H is a 7 A, 250 V AC/DC slow-blow glass cartridge fuse with 3AB/3AG package configuration (1/4" x 1-1/4" axial). This component is classified as obsolete, necessitating identification of active equivalent alternatives for continued circuit protection applications. Direct manufacturer substitutes from Littelfuse maintain identical electrical and mechanical specifications while offering current product status and enhanced compliance certifications.

Substiute Parts

0315007.H

Littelfuse Inc.In Stock: 7290315007.H Datasheet

Current PartRFQ

0315007.HXP

LittelfuseIn Stock: 8720315007.HXP Datasheet

DirectRFQ

0315007.MXP

Littelfuse Inc.In Stock: 8970315007.MXP Datasheet

Parametric EquivalentRFQ

0315007.VXP

Littelfuse Inc.In Stock: 9240315007.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 0315007.H is based on strict electrical and mechanical parameter equivalence. All substitute parts maintain identical current rating (7 A), voltage rating (250 V AC), response time (slow blow), package configuration (3AB/3AG), breaking capacity (200 A), melting I²t (347), operating temperature range (-55°C ~ 125°C), and physical dimensions (0.275" Dia x 1.275" L).

The three active Littelfuse equivalents—0315007.HXP, 0315007.MXP, and 0315007.VXP—are direct manufacturer substitutes that preserve all critical protection characteristics while offering active product status and improved regulatory compliance. DC cold resistance values across all parts remain within 0.0127–0.0128 Ohms, representing negligible variance in circuit behavior.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—0315007.HXP, 0315007.MXP, and 0315007.VXP—are electrically and mechanically equivalent to the obsolete 0315007.H. Selection among these active alternatives is determined by regulatory and compliance requirements:

0315007.HXP provides the broadest certification coverage with CE, CSA, K-MARK, PSE, and UL approvals, suitable for applications requiring international market compliance.

0315007.MXP and 0315007.VXP offer equivalent electrical performance with comparable certification profiles. 0315007.VXP includes KC certification in addition to CE, CSA, PSE, and UL, addressing Korean market requirements where applicable.

All three substitutes are ROHS3 compliant and REACH unaffected, addressing modern environmental and regulatory standards absent from the obsolete original part. DC cold resistance variance (0.0127 to 0.0128 Ohms) is negligible and does not affect circuit protection performance.

Frequently Asked Questions (FAQ)

Q: Can 0315007.HXP, 0315007.MXP, and 0315007.VXP be used interchangeably with 0315007.H?

A: Yes. All three parts maintain identical electrical specifications (7 A, 250 V AC, slow-blow response, 200 A breaking capacity, 347 melting I²t) and mechanical configuration (3AB/3AG package, 0.275" Dia x 1.275" L dimensions). They are direct functional equivalents suitable for direct replacement in through-hole applications.

Q: What is the difference between the three substitute parts?

A: The three substitutes are electrically and mechanically identical. Differences exist only in regulatory certifications and approval agencies. 0315007.HXP includes K-MARK certification; 0315007.VXP includes KC certification. Selection depends on target market compliance requirements.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three substitute parts (0315007.HXP, 0315007.MXP, 0315007.VXP) are ROHS3 compliant. The obsolete 0315007.H is RoHS non-compliant.

Q: Does the DC cold resistance difference (0.0127 vs 0.0128 Ohms) affect circuit performance?

A: No. The variance of 0.0001 Ohms between the original part and substitutes is negligible and does not impact circuit protection characteristics or thermal behavior in practical applications.

Q: Are the substitute parts available in the same packaging as the original?

A: The substitute parts are supplied in bulk packaging. The original 0315007.H packaging specification was not provided. Confirm packaging requirements with your procurement department if specific packaging formats are required.

Q: What certifications do the substitute parts carry?

A: 0315007.HXP carries CE, CSA, K-MARK, PSE, and UL certifications. 0315007.MXP carries CE, CSA, K-MARK, PSE, and UL certifications. 0315007.VXP carries CE, CSA, KC, PSE, and UL certifications. All meet international safety standards for circuit protection devices.