AML21KBA2AB Pushbutton Switch SPDT Equivalent & Substitute Parts

Part Overview

The AML21KBA2AB is a pushbutton switch manufactured by Honeywell Sensing and Productivity Solutions, configured as a Single Pole Double Throw (SPDT) device with On-On switching function. This component is rated for 3A AC at 125V and 2A DC at 24V, designed for standard panel mount snap-in installation with solder and quick connect termination.

The AML21KBA2AB is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

AML21KBA2AB

Honeywell Sensing and Productivity SolutionsIn Stock: 944AML21KBA2AB Datasheet

Current PartRFQ

AML21EBA2AB

Honeywell Sensing and Productivity SolutionsIn Stock: 1165AML21EBA2AB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AML21KBA2AB is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Circuit configuration (SPDT), switch function (On-On), current ratings (3A AC / 2A DC), and voltage ratings (125V AC / 24V DC) must remain identical.

Mechanical Parameters: Mounting type (Panel Mount, Snap-In), termination style (Solder, Quick Connect - 0.110"), and panel cutout dimensions (Rectangular - 28.98mm x 19.05mm) must be maintained for physical and electrical compatibility.

Operational Parameters: Mechanical life (25,000 cycles) and electrical life (25,000 cycles) establish the performance baseline.

Compliance Parameters: RoHS compliance and Moisture Sensitivity Level (MSL 1) must be preserved.

The substitute part AML21EBA2AB belongs to the same AML21 series and maintains all critical electrical, mechanical, and operational parameters, differing only in product status (Active vs. Obsolete) and packaging designation.

Parameter Comparison

Engineering Selection Recommendations

The AML21EBA2AB is a direct functional equivalent to the AML21KBA2AB. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the AML21 series and maintain identical electrical, mechanical, and operational specifications.

The primary distinction is product status: AML21KBA2AB is obsolete, while AML21EBA2AB is active. For new designs, ongoing production, or component replenishment, AML21EBA2AB is the appropriate selection due to its active status and confirmed availability.

Both parts maintain RoHS compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and environmental standards. The identical panel cutout dimensions (28.98mm x 19.05mm) and termination style (Solder, Quick Connect - 0.110") ensure direct mechanical and electrical interchangeability in existing panel installations.

Frequently Asked Questions (FAQ)

Q: Can AML21EBA2AB be used as a direct replacement for AML21KBA2AB?

A: Yes. Both components are electrically and mechanically identical. They share the same SPDT circuit configuration, On-On switching function, 3A AC / 2A DC current ratings, 125V AC / 24V DC voltage ratings, panel mount snap-in mounting type, and solder/quick connect termination. Panel cutout dimensions are identical at 28.98mm x 19.05mm rectangular.

Q: What is the difference between AML21KBA2AB and AML21EBA2AB?

A: The components are functionally equivalent. AML21KBA2AB is classified as obsolete, while AML21EBA2AB is active. Packaging designation differs (AML21KBA2AB listed as "-" versus AML21EBA2AB as "Bulk"), but all electrical and mechanical parameters are identical.

Q: Are there any compatibility concerns when substituting AML21EBA2AB for AML21KBA2AB?

A: No compatibility concerns exist. Both components maintain identical specifications for circuit configuration, current and voltage ratings, mounting type, termination style, and panel cutout dimensions. RoHS compliance and MSL ratings are also identical.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by equivalence in circuit configuration (SPDT), switch function (On-On), current ratings (3A AC / 2A DC), voltage ratings (125V AC / 24V DC), mounting type (Panel Mount, Snap-In), termination style (Solder, Quick Connect - 0.110"), panel cutout dimensions (28.98mm x 19.05mm), mechanical life (25,000 cycles), electrical life (25,000 cycles), and compliance certifications (RoHS, MSL 1).

Q: Is AML21EBA2AB available in stock?

A: According to current inventory data, AML21EBA2AB has 1,075 pieces in stock as new original components, confirming availability for immediate procurement.