Grayhill 88AC2-182 Keypad Switch Equivalent & Substitute Parts

Part Overview

The Grayhill 88AC2-182 is a 12-key snap dome keypad switch designed for panel-mount applications requiring low-current switching at 24VDC. This non-illuminated keypad features a polyester overlay with telephone format legend, common bus output architecture, and operates across industrial temperature ranges. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and operational specifications can be maintained while accommodating different output configurations or aesthetic variations within the same product series.

Substiute Parts

88AC2-182

Grayhill Inc.In Stock: 106488AC2-182 Datasheet

Current PartRFQ

88AB2-172

Grayhill Inc.In Stock: 102788AB2-172 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Grayhill 88AC2-182 keypad switch can be substituted with the 88AB2-172 based on the following equivalence criteria:

Electrical Equivalence: Both parts maintain identical contact ratings of 0.01A @ 24VDC, ensuring compatible circuit performance in low-current switching applications.

Mechanical Compatibility: Both parts feature 12 snap dome keys in a 3 x 4 matrix configuration with identical panel-mount, front or rear installation capability and pin header termination.

Environmental Performance: Both parts operate across the same temperature range (-40°C to 80°C), maintain IP42 ingress protection, and deliver 3,000,000 operational cycles.

Compliance Alignment: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating.

Functional Difference: The primary distinction between these parts is the output architecture: the 88AC2-182 uses common bus output, while the 88AB2-172 uses matrix output. This difference affects circuit integration requirements but does not impact electrical performance specifications.

Aesthetic Variation: The 88AC2-182 features red keys, while the 88AB2-172 features blue keys. Both maintain identical white legend color and telephone format labeling.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (88AC2-182): The 88AC2-182 is the specified part for applications requiring common bus output architecture. This configuration simplifies circuit design by consolidating all key returns to a single bus line, reducing interconnect complexity in systems with centralized scanning logic.

Substitute Selection (88AB2-172): The 88AB2-172 is suitable for applications requiring matrix output architecture. This configuration is appropriate for systems implementing row-column scanning methodology, where individual key identification occurs through discrete row and column line monitoring.

Compliance Basis: Both parts maintain identical ROHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating, ensuring regulatory equivalence across industrial and commercial applications.

Product Status: Both parts are active in production with confirmed inventory availability, supporting long-term supply chain stability.

Selection Criteria: Component selection between these parts must be based on circuit architecture requirements (common bus versus matrix output) rather than electrical performance, as both parts deliver identical contact ratings, temperature performance, and operational life specifications.

Frequently Asked Questions (FAQ)

Q: Can the 88AB2-172 directly replace the 88AC2-182 in existing designs?

A: Direct replacement requires circuit redesign. The 88AC2-182 uses common bus output, while the 88AB2-172 uses matrix output. These architectures require different scanning and signal processing logic. Mechanical and electrical specifications are equivalent, but output signal routing differs fundamentally.

Q: What is the functional difference between common bus and matrix output?

A: Common bus output consolidates all key return signals to a single line, with individual key identification occurring through column scanning. Matrix output provides discrete row and column lines, requiring row-column scanning methodology for key identification.

Q: Are the operating temperature ranges identical?

A: Yes. Both the 88AC2-182 and 88AB2-172 operate across -40°C to 80°C, ensuring equivalent thermal performance in industrial applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating.

Q: What is the difference in key color between these parts?

A: The 88AC2-182 features red keys, while the 88AB2-172 features blue keys. Both maintain white legend color and identical telephone format labeling. This is an aesthetic variation with no impact on electrical or mechanical performance.

Q: Are the contact ratings identical?

A: Yes. Both parts are rated for 0.01A @ 24VDC, ensuring equivalent electrical performance in low-current switching applications.

Q: What is the operational life specification for both parts?

A: Both parts deliver 3,000,000 operational cycles, providing equivalent durability across industrial applications.

Q: Is the ingress protection rating the same?

A: Yes. Both parts maintain IP42 ingress protection, ensuring equivalent environmental sealing performance.

Q: Can these parts be used interchangeably in panel-mount applications?

A: Both parts support identical panel-mount installation (front or rear) with pin header termination. Mechanical interchangeability is confirmed. Circuit integration compatibility depends on output architecture requirements.