Honeywell AML21JBA2AB Pushbutton Switch - Equivalent & Substitute Parts

Part Overview

The Honeywell AML21JBA2AB is a Single Pole Double Throw (SPDT) illuminated pushbutton switch rated for 3A at 125V AC and 2A at 24V DC. This component is designed for panel-mount, snap-in installation with incandescent illumination and a square 19.05mm x 19.05mm panel cutout. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

AML21JBA2AB

Honeywell Sensing and Productivity SolutionsIn Stock: 843AML21JBA2AB Datasheet

Current PartRFQ

AML21CBE2AB

Honeywell Sensing and Productivity SolutionsIn Stock: 832AML21CBE2AB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AML21JBA2AB 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), panel cutout dimensions (Square - 19.05mm x 19.05mm), and termination style (Solder, Quick Connect - 0.110") must match exactly.

Functional Parameters: Illumination type (Incandescent), mechanical life (25,000 cycles), and electrical life (25,000 cycles) must be maintained.

Compliance Parameters: RoHS compliance status and Moisture Sensitivity Level (MSL 1) must be equivalent or superior.

The AML21CBE2AB meets all these criteria and is classified as an equivalent substitute within the AML21 series.

Parameter Comparison

Engineering Selection Recommendations

The AML21CBE2AB is the direct equivalent substitute for the obsolete AML21JBA2AB. Both components share identical electrical ratings, mechanical specifications, and functional characteristics within the AML21 series.

The AML21CBE2AB offers the advantage of active product status, ensuring continued availability and supply chain reliability. The ROHS3 compliance designation of the substitute represents an updated regulatory standard compared to the RoHS compliance of the original part, indicating enhanced environmental compliance.

For applications requiring the AML21JBA2AB, the AML21CBE2AB provides full functional and mechanical compatibility without design modification. The identical panel cutout dimensions, termination style, and electrical ratings enable direct replacement in existing panel assemblies and circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the AML21CBE2AB replace the AML21JBA2AB in existing installations?

A: Yes. Both parts share identical electrical ratings (3A at 125V AC, 2A at 24V DC), mechanical specifications (panel mount, snap-in, 19.05mm square cutout), and functional characteristics (SPDT, On-On, incandescent illumination). Direct substitution is possible without circuit or panel modification.

Q: What is the difference between RoHS and ROHS3 compliance?

A: ROHS3 represents the current regulatory standard for Restriction of Hazardous Substances, incorporating updated substance restrictions. The AML21CBE2AB meets this more recent standard, while the AML21JBA2AB meets the earlier RoHS standard. Both are compliant with their respective regulatory frameworks.

Q: Are the illumination specifications identical between these parts?

A: Both parts use incandescent illumination. The AML21CBE2AB specifies an illumination voltage of 28 VAC, while the AML21JBA2AB does not provide this specification in the available data. Both operate within the 24V DC system voltage rating.

Q: What is the packaging difference between these parts?

A: The AML21JBA2AB is supplied in standard packaging, while the AML21CBE2AB is supplied in bulk packaging. This difference affects order quantities and handling but does not impact component functionality or performance.

Q: Are both parts available for procurement?

A: The AML21JBA2AB is classified as obsolete with 775 pieces in current inventory. The AML21CBE2AB is classified as active with 735 pieces in current inventory, providing ongoing supply availability.