Littelfuse 0218008.MXE Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218008.MXE is an 8 A, 250 V AC/DC slow-blow glass cartridge fuse with a 5mm x 20mm axial form factor and through-hole mounting. This part is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within the same application category.

Substiute Parts

0218008.MXE

Littelfuse Inc.In Stock: 11450218008.MXE Datasheet

Current PartRFQ

0218008.MXEP

Littelfuse Inc.In Stock: 17440218008.MXEP Datasheet

Parametric EquivalentRFQ

0034.3126.PT

SCHURTER Inc.In Stock: 46930034.3126.PT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0218008.MXE is determined by strict equivalence across the following parameters:

• Current Rating: 8 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (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: 80 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All identified substitute parts meet these criteria. Variations in melting I²t, physical dimensions within tolerance, and approval agency certifications do not disqualify substitution but are documented for engineering review.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0218008.MXEP is the primary parametric equivalent, offering identical electrical and mechanical specifications with active product status and expanded regulatory compliance (CE, K-MARK, PSE, VDE in addition to CSA and UL). This part is ROHS3 compliant and carries REACH Unaffected status, addressing modern regulatory requirements absent from the obsolete 0218008.MXE.

The SCHURTER 0034.3126.PT provides an alternative from a different manufacturer while maintaining all critical electrical parameters. This part is also ROHS3 compliant and carries cURus certification. The melting I²t value of 275 is lower than both Littelfuse options, which may affect response characteristics in specific circuit conditions but does not disqualify substitution within the defined parameter set.

For new designs or procurement of the obsolete 0218008.MXE, the Littelfuse 0218008.MXEP is recommended as the primary choice due to product status and certification breadth. The SCHURTER 0034.3126.PT serves as a secondary option where multi-source qualification is required.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0218008.MXEP directly replace the obsolete 0218008.MXE?

A: Yes. Both parts share identical current rating (8 A), voltage rating (250 V AC), fuse type (cartridge, glass), response time (slow blow), package dimensions (5mm x 20mm axial), mounting type (through hole), breaking capacity (80 A), and operating temperature range (-55°C ~ 125°C). The primary difference is product status and regulatory compliance.

Q: What is the significance of the melting I²t difference between these parts?

A: Melting I²t values (350.5 for 0218008.MXE, 341.5 for 0218008.MXEP, and 275 for 0034.3126.PT) indicate the thermal energy required to melt the fuse element. These variations fall within the tolerance band for 8 A slow-blow fuses and do not alter the fundamental substitution relationship. All three parts meet the 80 A breaking capacity specification.

Q: Are there packaging differences between these parts?

A: The Littelfuse 0218008.MXE is packaged in tape and reel format, while both 0218008.MXEP and 0034.3126.PT are supplied in bulk packaging. Physical dimensions are nominally identical (5mm x 20mm), with the SCHURTER part specified at 0.213" diameter versus 0.228" for Littelfuse parts, representing minor manufacturing tolerance variation.

Q: Which part should be selected for new designs requiring RoHS compliance?

A: Both the Littelfuse 0218008.MXEP and SCHURTER 0034.3126.PT are ROHS3 compliant. The obsolete 0218008.MXE is RoHS non-compliant and should not be used in new designs subject to RoHS requirements.

Q: What regulatory certifications apply to each part?

A: The 0218008.MXE carries CSA and UL approvals. The 0218008.MXEP carries CE, CSA, K-MARK, PSE, UL, and VDE approvals. The 0034.3126.PT carries cURus certification. Selection should align with regional regulatory requirements for the end application.