Equivalent & Substitute Parts for AA82AB0

Part Overview

The AA82AB0 is a Thermal Cutoff (TCO) breaker manufactured by Bourns Inc. in the Komatsulite™ AA series. This component functions as a nonstandard strap-soldered thermal protection device rated for 35 A at 82°C (180°F) operating temperature with a 40°C (104°F) reset threshold. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional and electrical compatibility for new designs and production continuity.

Substiute Parts

AA82AB0

Bourns Inc.In Stock: 757AA82AB0 Datasheet

Current PartRFQ

HC82AY-1

Bourns Inc.In Stock: 6047HC82AY-1 Datasheet

DirectRFQ

AC82ABD

Bourns Inc.In Stock: 837AC82ABD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for thermal cutoff breakers is determined by matching the following critical parameters:

• Thermal Trip Point: 82°C (180°F) — must be identical
• Reset Temperature: 40°C (104°F) — must be identical
• Voltage Rating: 28 V DC — must be equal or greater
• Current Rating: Must be equal to or greater than the application requirement
• Approval Certifications: cUL, TUV, UL compliance required
• RoHS Compliance: ROHS3 Compliant status required

Two substitute parts meet these criteria with variations in current capacity and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

AC82ABD is the primary recommended substitute for AA82AB0. Both parts maintain identical current rating (35 A), thermal trip point (82°C), and reset temperature (40°C). AC82ABD is active in production status and carries full regulatory approval (cUL, TUV, UL) with ROHS3 compliance. The package configuration differs (2SMD versus strap solder), requiring PCB layout verification during design transition.

HC82AY-1 is a secondary substitute suitable only for applications where current requirements do not exceed 25 A. This part shares identical thermal characteristics and regulatory compliance but provides reduced current capacity. HC82AY-1 maintains the strap-solder package configuration, minimizing mechanical redesign requirements.

Selection between AC82ABD and HC82AY-1 depends on circuit current demand. For circuits requiring the full 35 A rating, AC82ABD is mandatory. For circuits operating at 25 A or below, HC82AY-1 offers package compatibility with the obsolete AA82AB0.

Frequently Asked Questions (FAQ)

Q: Can HC82AY-1 replace AA82AB0 in all applications? A: No. HC82AY-1 is limited to 25 A current rating, while AA82AB0 is rated for 35 A. Use HC82AY-1 only in circuits where maximum current does not exceed 25 A.

Q: What is the difference between AC82ABD and AA82AB0 packages? A: AA82AB0 uses strap-solder mounting (nonstandard), while AC82ABD uses 2SMD (surface-mount device) configuration. PCB layout and assembly process modifications are required when transitioning to AC82ABD.

Q: Are all substitute parts RoHS compliant? A: Yes. Both AC82ABD and HC82AY-1 are ROHS3 compliant, matching the environmental compliance of AA82AB0.

Q: Do substitute parts carry the same regulatory certifications? A: Yes. AC82ABD and HC82AY-1 both hold cUL, TUV, and UL approvals, identical to AA82AB0.

Q: What thermal characteristics must remain constant during substitution? A: The 82°C (180°F) thermal trip point and 40°C (104°F) reset temperature must remain unchanged. These parameters are non-negotiable for thermal protection function.

Q: Is AC82ABD the manufacturer-recommended substitute? A: Yes. AC82ABD is designated as the manufacturer-recommended substitute for AA82AB0, maintaining full electrical and thermal equivalence at 35 A rating.