0216004.MRET1P Equivalent & Substitute Parts

Part Overview

The 0216004.MRET1P is a 4 A 250 V AC/DC ceramic cartridge fuse manufactured by Littelfuse Inc. in the 216 series. This through-hole fuse is designed for 5mm x 20mm axial mounting applications with fast-blow response characteristics. The part is active in production status and widely stocked, with 1179 pieces available in tape and reel packaging. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative packaging formats are required.

Substiute Parts

0216004.MRET1P

Littelfuse Inc.In Stock: 11940216004.MRET1P Datasheet

Current PartRFQ

0216004.MXEP

Littelfuse Inc.In Stock: 28460216004.MXEP Datasheet

DirectRFQ

5HFP 4-R

Bel Fuse Inc.In Stock: 28655HFP 4-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0216004.MRET1P is determined by strict equivalence across the following critical parameters:

• Current Rating: 4 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Response Time: Fast Blow (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)

Two substitute parts meet these criteria: 0216004.MXEP (Littelfuse Inc., bulk packaging) and 5HFP 4-R (Bel Fuse Inc., bulk packaging). Both parts are functionally equivalent to the main part number and differ only in packaging format and minor dimensional tolerances within acceptable mechanical limits.

Parameter Comparison

Engineering Selection Recommendations

All three parts—0216004.MRET1P, 0216004.MXEP, and 5HFP 4-R—are active production components with full regulatory compliance. Selection between these parts is based on packaging requirements and inventory availability rather than electrical performance.

0216004.MRET1P and 0216004.MXEP are both Littelfuse Inc. products within the same 216 series, differing only in packaging format (tape and reel versus bulk). These two parts are direct equivalents with identical electrical and thermal characteristics. The choice between them depends on assembly process requirements: tape and reel packaging is suitable for automated pick-and-place assembly, while bulk packaging is appropriate for manual assembly or reel consolidation.

5HFP 4-R is manufactured by Bel Fuse Inc. and meets all critical electrical and mechanical specifications. Minor dimensional variations (5.50mm x 21.00mm versus 5.80mm x 22.50mm) and differences in melting I²t (22 versus 14.995) and DC cold resistance (0.023 Ohms versus 0.0247 Ohms) remain within acceptable tolerances for through-hole cartridge fuse applications. All three parts carry equivalent regulatory approvals including UL, CE, CSA, and VDE certifications.

Frequently Asked Questions (FAQ)

Q: Can 0216004.MXEP be used as a direct replacement for 0216004.MRET1P?

A: Yes. Both parts are manufactured by Littelfuse Inc., belong to the same 216 series, and are electrically and mechanically identical. The only difference is packaging format: 0216004.MRET1P is supplied in tape and reel format, while 0216004.MXEP is supplied in bulk. Selection depends on your assembly process requirements.

Q: Is 5HFP 4-R from Bel Fuse Inc. compatible with applications designed for 0216004.MRET1P?

A: Yes. The 5HFP 4-R meets all critical electrical specifications: 4 A current rating, 250 V AC voltage rating, fast-blow response, 1.5 kA breaking capacity, and -55°C to 125°C operating temperature range. Physical dimensions are within acceptable mechanical tolerances for 5mm x 20mm axial through-hole mounting. All regulatory certifications are equivalent.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by exact equivalence in current rating (4 A), voltage rating (250 V AC), fuse type (cartridge ceramic), package dimensions (5mm x 20mm axial), response time (fast blow), mounting type (through hole), breaking capacity (1.5 kA), and operating temperature range (-55°C to 125°C).

Q: Does packaging format affect electrical performance?

A: No. Tape and reel packaging (0216004.MRET1P) and bulk packaging (0216004.MXEP and 5HFP 4-R) contain identical fuse elements with identical electrical characteristics. Packaging format is a logistics and assembly consideration only.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts—0216004.MRET1P, 0216004.MXEP, and 5HFP 4-R—are ROHS3 compliant and carry equivalent regulatory approvals including UL, CE, CSA, VDE, and other international certifications.

Q: What is the difference in melting I²t between the parts?

A: The 0216004.MRET1P and 0216004.MXEP have a melting I²t of 14.995, while the 5HFP 4-R has a melting I²t of 22. Both values are within acceptable ranges for 4 A fast-blow ceramic cartridge fuses and do not affect substitution eligibility for standard applications.