5STP 80 Equivalent & Substitute Parts

Part Overview

The 5STP 80 is an 80 mA, 250 V AC/DC slow-blow glass cartridge fuse with a 5mm x 20mm axial form factor, manufactured by Bel Fuse Inc. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. Direct replacements and functionally equivalent alternatives are available from active product lines that maintain identical electrical and mechanical specifications.

Substiute Parts

5STP 80

Bel Fuse Inc.In Stock: 6805STP 80 Datasheet

Current PartRFQ

5STP 80-R

Bel Fuse Inc.In Stock: 20585STP 80-R Datasheet

DirectRFQ

0218.080MXEP

Littelfuse Inc.In Stock: 10080218.080MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 5STP 80 is determined by strict equivalence across the following critical parameters:

• Current Rating: 80 mA (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: 35 A (exact match required)

Two substitute parts meet these criteria: the 5STP 80-R from Bel Fuse Inc. (direct manufacturer alternative with active product status) and the 0218.080MXEP from Littelfuse Inc. (functionally equivalent from an alternative manufacturer).

Parameter Comparison

Engineering Selection Recommendations

The 5STP 80-R is the primary substitute for the obsolete 5STP 80. Both components are manufactured by Bel Fuse Inc., share identical electrical and mechanical specifications, and maintain the same series designation. The 5STP 80-R carries active product status and holds ROHS3 compliance, addressing regulatory requirements that the original part does not meet.

The 0218.080MXEP from Littelfuse Inc. provides a functionally equivalent alternative from a different manufacturer. This part maintains all critical electrical parameters and mechanical form factor compatibility. The 0218.080MXEP is also ROHS3 compliant and carries active product status. Both substitute parts are supported by comprehensive approval certifications suitable for industrial and consumer applications.

Frequently Asked Questions (FAQ)

Q: Can the 5STP 80-R be used as a direct replacement for the 5STP 80?

A: Yes. The 5STP 80-R maintains identical current rating (80 mA), voltage rating (250 V AC), fuse type (cartridge, glass), response time (slow blow), package dimensions (5mm x 20mm axial), and breaking capacity (35 A). Both components are through-hole mounted and operate across the same temperature range (-55°C ~ 125°C).

Q: What are the differences between the 5STP 80-R and 0218.080MXEP?

A: Both parts are electrically and mechanically equivalent. The primary differences are manufacturer (Bel Fuse Inc. versus Littelfuse Inc.) and minor variations in physical dimensions (5.50mm x 21.00mm for 5STP 80-R versus 6.00mm x 22.50mm for 0218.080MXEP) and DC cold resistance (15.7 Ohms versus 12.6 Ohms). Both are ROHS3 compliant and carry active product status.

Q: Is the 5STP 80 still available for purchase?

A: The 5STP 80 is classified as obsolete. The 5STP 80-R and 0218.080MXEP are active alternatives with current inventory availability.

Q: Are there any compliance differences between these parts?

A: The original 5STP 80 is RoHS non-compliant. Both substitute parts (5STP 80-R and 0218.080MXEP) are ROHS3 compliant. All three parts carry CE, CSA, SEMKO, and VDE certifications. The 5STP 80-R adds cULus certification, while the 0218.080MXEP adds K-MARK certification.

Q: Can these fuses be used interchangeably in the same circuit?

A: Yes, provided the circuit board layout accommodates the physical dimensions. The 5STP 80-R maintains the original 5mm x 20mm footprint. The 0218.080MXEP has slightly larger dimensions (6.00mm x 22.50mm) and should be evaluated for mechanical fit in existing designs.