MHP-TA15-9-77 Equivalent & Substitute Parts

Part Overview

The MHP-TA15-9-77 is a thermal cutoff (TCO) breaker manufactured by Littelfuse Inc., rated for 12 A at 77°C (171°F) with a 9 V DC voltage rating. This component is classified as obsolete, which necessitates identification of active equivalent parts for continued system design and procurement. The part features nonstandard packaging with strap solder termination and maintains ROHS3 compliance with UL approval.

Substiute Parts

MHP-TA15-9-77

Littelfuse Inc.In Stock: 3700MHP-TA15-9-77 Datasheet

Current PartRFQ

MHP-TAM15-9-77

Littelfuse Inc.In Stock: 54502MHP-TAM15-9-77 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MHP-TA15-9-77 is based on electrical and functional equivalence across the following critical parameters:

• Rated functioning temperature: 77°C (171°F)
• Reset temperature: 40°C (104°F)
• Current rating: 12 A
• Voltage rating: 9 V DC
• Approval agency certification: UL
• RoHS compliance: ROHS3
• Thermal cutoff breaker type with nonstandard package configuration

The MHP-TAM15-9-77 meets all substitution criteria as an active product within the same manufacturer family, maintaining identical electrical specifications and thermal characteristics while offering improved availability.

Parameter Comparison

Engineering Selection Recommendations

The MHP-TAM15-9-77 is the direct substitute for the obsolete MHP-TA15-9-77. Both components share identical electrical specifications, thermal operating parameters, and regulatory certifications. The MHP-TAM15-9-77 carries active product status with expanded approval certifications (cUL in addition to UL), ensuring continued availability and manufacturing support. Selection of the MHP-TAM15-9-77 is appropriate for new designs and replacement applications requiring equivalent thermal protection at 77°C with 12 A current capacity.

Frequently Asked Questions (FAQ)

Q: Can the MHP-TAM15-9-77 be used as a direct replacement for the MHP-TA15-9-77?

A: Yes. Both parts are manufactured by Littelfuse Inc. and share identical electrical ratings (12 A, 9 V DC), thermal trip temperature (77°C), reset temperature (40°C), and regulatory compliance (UL, ROHS3). The MHP-TAM15-9-77 is the active equivalent.

Q: What is the difference between the MHP-TA and MHP-TAM series?

A: The MHP-TAM series represents the current production line for this thermal cutoff specification. The MHP-TA series is obsolete. Electrical and thermal performance are equivalent across both series for matching part numbers.

Q: Are there packaging differences between these parts?

A: Both the MHP-TA15-9-77 and MHP-TAM15-9-77 use nonstandard package configuration with strap solder termination. The MHP-TAM15-9-77 is supplied in bag packaging, while the original part number does not specify packaging format.

Q: Does the MHP-TAM15-9-77 meet the same regulatory requirements?

A: Yes. The MHP-TAM15-9-77 maintains UL approval and adds cUL certification. Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: What thermal characteristics must be matched for substitution?

A: Substitution requires matching the rated functioning temperature (77°C), reset temperature (40°C), and current rating (12 A). The MHP-TAM15-9-77 meets all these requirements.