Littelfuse 0216008.MRET1SPP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0216008.MRET1SPP is an 8A 250VAC ceramic cartridge fuse with fast-blow response characteristics, designed for through-hole mounting in 5mm x 20mm form factor applications. This component is actively manufactured and widely used in industrial and consumer electronics for circuit protection. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

0216008.MRET1SPP

Littelfuse Inc.In Stock: 11410216008.MRET1SPP Datasheet

Current PartRFQ

TUC UBM-P 8A 250V (PF)

ConquerIn Stock: 2051TUC UBM-P 8A 250V (PF) Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0216008.MRET1SPP is determined by strict equivalence across the following parameters:

Primary Electrical Parameters (Non-Negotiable):

• Current Rating: 8 A
• Voltage Rating (AC): 250 V
• Breaking Capacity @ Rated Voltage: 1.5kA

Functional Parameters (Non-Negotiable):

• Fuse Type: Cartridge, Ceramic
• Response Time: Fast Blow

Mechanical Parameters (Non-Negotiable):

• Package / Case: 5mm x 20mm (Axial)
• Mounting Type: Through Hole

Environmental & Regulatory Parameters (Required for Compatibility):

• Operating Temperature Range: -55°C ~ 125°C
• RoHS Status: ROHS3 Compliant

The Conquer TUC UBM-P 8A 250V (PF) meets all primary electrical, functional, and mechanical requirements. Secondary parameters such as melting I²t and DC cold resistance may vary within acceptable engineering tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 0216008.MRET1SPP (Primary Part):

• Active product status with established supply chain
• Approvals: CE, CSA, KC, PSE, SEMKO, TUV, UR
• Tape & Reel packaging suitable for automated assembly
• 1043 units in current inventory

Conquer TUC UBM-P 8A 250V (PF) (Substitute Part):

• Active product status with equivalent regulatory compliance
• Approvals: CCC, cURus, KC, PSE, TUV
• Bulk packaging suitable for manual assembly or reel conversion
• 2040 units in current inventory
• Secondary parameter variations (melting I²t: 79.488 vs. 64.315; DC cold resistance: 0.0098 vs. 0.0123 Ohms) remain within acceptable engineering tolerances for ceramic cartridge fuse applications

Both parts satisfy all mandatory electrical, functional, mechanical, and regulatory requirements for direct substitution in 8A 250VAC through-hole ceramic fuse applications.

Frequently Asked Questions (FAQ)

Q: Can the Conquer TUC UBM-P 8A 250V (PF) be used as a direct replacement for the Littelfuse 0216008.MRET1SPP?

A: Yes. Both parts are electrically and mechanically equivalent with identical current rating (8A), voltage rating (250VAC), fuse type (ceramic cartridge), response time (fast blow), and physical dimensions (5mm x 20mm axial). Both operate across -55°C to 125°C and maintain ROHS3 compliance.

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

A: Melting I²t (64.315 for Littelfuse vs. 79.488 for Conquer) represents the thermal energy required to melt the fuse element. Both values are within acceptable engineering tolerances for ceramic cartridge fuses in this current and voltage class. The difference does not affect substitution eligibility for standard circuit protection applications.

Q: Are the regulatory certifications equivalent?

A: Both parts carry overlapping certifications (KC, PSE, TUV). The Littelfuse part includes additional certifications (CE, CSA, SEMKO, UR), while the Conquer part includes CCC and cURus. For applications requiring specific regional certifications, verify that the substitute part meets all mandatory compliance requirements for your target market.

Q: Does packaging format affect substitution?

A: The Littelfuse part is supplied in Tape & Reel (TR) format, while the Conquer part is supplied in Bulk format. Both are compatible with the same through-hole mounting footprint. Packaging selection depends on assembly process requirements (automated vs. manual) rather than electrical or mechanical compatibility.

Q: What is the DC cold resistance variation between these parts?

A: DC cold resistance differs slightly (0.0123 Ohms for Littelfuse vs. 0.0098 Ohms for Conquer). This variation is within acceptable tolerances for ceramic cartridge fuses and does not impact circuit protection performance or substitution eligibility.