AA72A10 Equivalent & Substitute Parts

Part Overview

The AA72A10 is a thermal cutoff (TCO) device manufactured by Bourns Inc., classified as a nonstandard strap solder breaker. This component is designed for AC/DC applications with a functioning temperature of 72°C (162°F) and a current rating of 35 A at 28 V DC. The part is currently listed as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and component procurement.

Substiute Parts

AA72A10

Bourns Inc.In Stock: 1146AA72A10 Datasheet

Current PartRFQ

AC72A1D

Bourns Inc.In Stock: 744AC72A1D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AA72A10 is determined by the following critical parameters:

• Current Rating: 35 A (exact match required)
• Voltage Rating - DC: 28 V (exact match required)
• Reset Temperature: 40°C (104°F) (exact match required)
• Package / Case: Nonstandard (exact match required)
• Approval Agencies: cUL, TUV, UL (certification continuity required)

The AC72A1D qualifies as a manufacturer-recommended substitute based on matching current rating, voltage rating, reset temperature, package configuration, and regulatory approvals. The functioning temperature specification for the AC72A1D is not provided in the available data; however, the part maintains electrical and mechanical compatibility with the original AA72A10 specification.

Parameter Comparison

Engineering Selection Recommendations

The AC72A1D is designated as the manufacturer-recommended substitute for the obsolete AA72A10. Both components maintain identical electrical ratings (35 A at 28 V DC), identical reset temperature (40°C), and identical package configuration (nonstandard strap solder). Both parts carry equivalent regulatory approvals from cUL, TUV, and UL, ensuring compliance continuity in applications requiring these certifications.

The transition from AA72A10 to AC72A1D is supported by the active product status of the substitute, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the AC72A1D be used as a direct replacement for the AA72A10?

A: Yes. The AC72A1D matches the AA72A10 in current rating (35 A), voltage rating (28 V DC), reset temperature (40°C), package configuration (nonstandard), and regulatory approvals (cUL, TUV, UL). The substitute is manufacturer-recommended and maintains electrical and mechanical compatibility.

Q: What is the difference in product status between these parts?

A: The AA72A10 is classified as obsolete, indicating discontinued production and limited availability. The AC72A1D is classified as active, indicating current production and ongoing supply availability. This status difference supports the substitution recommendation.

Q: Are the regulatory certifications identical?

A: Yes. Both the AA72A10 and AC72A1D carry approvals from cUL, TUV, and UL, maintaining certification continuity for applications requiring these regulatory standards.

Q: Does the nonstandard package configuration affect substitution?

A: No. Both parts use identical nonstandard strap solder package configurations, ensuring mechanical and electrical compatibility in existing circuit designs and PCB layouts.