Equivalent & Substitute Parts for 021506.3MXEP

Part Overview

The 021506.3MXEP is a 6.3 A ceramic cartridge fuse rated for 250 V AC, manufactured by Littelfuse Inc. in the 215 series. This through-hole component is designed for applications requiring slow-blow fuse protection in a 5mm x 20mm form factor. The part is active in production with full RoHS3 compliance and multiple international approvals. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and functional characteristics align with the original specification, enabling direct replacement in circuit designs.

Substiute Parts

021506.3MXEP

Littelfuse Inc.In Stock: 12245021506.3MXEP Datasheet

Current PartRFQ

021506.3MXESPP

Littelfuse Inc.In Stock: 2133021506.3MXESPP Datasheet

DirectRFQ

0001.2512.PT

SCHURTER Inc.In Stock: 41570001.2512.PT Datasheet

DirectRFQ

0001.2512.TR

SCHURTER Inc.In Stock: 30570001.2512.TR Datasheet

DirectRFQ

5HTP 6.3-R

Bel Fuse Inc.In Stock: 31645HTP 6.3-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following parameters:

• Current Rating: 6.3 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 1.5 kA (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All identified substitute parts meet these criteria. Variations in physical dimensions (diameter and length within tolerance), DC voltage ratings (where specified), melting I²t values, and approval agency certifications do not preclude substitution when the primary electrical and mechanical parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are active products with full RoHS3 compliance and international regulatory approvals. Selection between the main part and substitutes is based on availability, packaging format, and certification requirements specific to the application.

021506.3MXESPP (Littelfuse 215SP series) maintains identical electrical specifications and melting I²t characteristics to the main part, differing only in physical dimensions and approval agency certifications. This part is suitable for direct replacement where Littelfuse series continuity is preferred.

0001.2512.PT and 0001.2512.TR (SCHURTER SPT 5x20 series) provide equivalent electrical performance with additional DC voltage rating specification (150 V DC). These parts feature higher melting I²t values (171 versus 128.75) and cURus certification. The TR variant is supplied in cut tape packaging, while the PT variant is supplied in bulk. Both are suitable for applications requiring documented DC voltage capability.

5HTP 6.3-R (Bel Fuse 5HTP series) delivers equivalent AC performance with the highest melting I²t value (181) among all options and comprehensive multi-agency certifications including CCC, CE, CSA, cULus, PSE, SEMKO, and VDE. This part is suitable for applications requiring maximum certification coverage.

Frequently Asked Questions (FAQ)

Q: Can 021506.3MXESPP replace 021506.3MXEP directly?

A: Yes. Both parts share identical current rating (6.3 A), AC voltage rating (250 V), fuse type (ceramic cartridge), response time (slow blow), package dimensions (5mm x 20mm axial), and breaking capacity (1.5 kA). Physical dimension variations and series designation differences do not affect functional compatibility.

Q: What is the difference between SCHURTER 0001.2512.PT and 0001.2512.TR?

A: Both parts are electrically and mechanically identical. The primary difference is packaging format: PT is supplied in bulk, while TR is supplied in cut tape. Selection depends on procurement and assembly process requirements.

Q: Can SCHURTER parts (0001.2512.PT / 0001.2512.TR) be used in applications designed for Littelfuse 021506.3MXEP?

A: Yes. All electrical and mechanical parameters are equivalent. SCHURTER parts include specified DC voltage rating (150 V) not listed for the Littelfuse part, providing additional capability. Melting I²t values differ (171 versus 128.75), reflecting different thermal response characteristics within the slow-blow classification.

Q: What certifications apply to each substitute part?

A: 021506.3MXEP carries CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE approvals. 021506.3MXESPP carries CE, CQC, CSA, KC, PSE, UR, and VDE approvals. SCHURTER parts (0001.2512.PT and 0001.2512.TR) carry cURus certification. Bel Fuse 5HTP 6.3-R carries CCC, CE, CSA, cULus, PSE, SEMKO, and VDE approvals. Application-specific certification requirements determine appropriate part selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed—021506.3MXEP, 021506.3MXESPP, 0001.2512.PT, 0001.2512.TR, and 5HTP 6.3-R—are ROHS3 compliant and REACH unaffected.