Equivalent & Substitute Parts for C&K 8121SY9ALE

Part Overview

The C&K 8121SY9ALE is a pushbutton switch with Single Pole Double Throw (SPDT) configuration, designed for standard through-hole, right-angle mounting applications. This component features a round plunger actuator with on-momentary switch function, rated for 1A at 120V AC or 28V DC operation.

The 8121SY9ALE carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this component.

Substiute Parts

8121SY9ALE

C&KIn Stock: 9438121SY9ALE Datasheet

Current PartRFQ

8121SY9ARE

C&KIn Stock: 10228121SY9ARE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 8121SY9ALE is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Circuit configuration: SPDT
• Current rating: 1A (AC/DC)
• Voltage rating: 120V AC / 28V DC
• Switch function: On-Mom
• Electrical life: 60,000 cycles

Mechanical Parameters:

• Mounting type: Through Hole, Right Angle
• Actuator type: Round, Plunger
• Termination style: PC Pin
• Operating temperature range: -30°C to 75°C

Compliance Parameters:

• RoHS compliance status
• Moisture sensitivity level: MSL 1

The substitute part 8121SY9ARE maintains identical electrical and mechanical specifications while offering active product status and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 8121SY9ARE serves as a direct functional equivalent to the obsolete 8121SY9ALE. Both components share identical electrical ratings, mechanical specifications, and operating characteristics within the 8020 series.

Product Status Consideration: The 8121SY9ALE is classified as obsolete, while the 8121SY9ARE maintains active product status. This distinction ensures long-term component availability and continued manufacturer support for the 8121SY9ARE.

Compliance Enhancement: The 8121SY9ARE provides ROHS3 compliance certification, representing an updated regulatory standard compared to the RoHS compliance of the original part. Both components maintain MSL 1 moisture sensitivity classification and EAR99 export control status.

Packaging Difference: The main part is supplied in bulk packaging, while the substitute is provided in tray packaging. This packaging variation does not affect electrical or mechanical performance and accommodates different procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can the 8121SY9ARE directly replace the 8121SY9ALE in existing designs?

A: Yes. The 8121SY9ARE maintains identical electrical ratings (1A at 120V AC / 28V DC), circuit configuration (SPDT), switch function (On-Mom), mechanical mounting (through-hole right-angle), and operating temperature range (-30°C to 75°C). Pin configuration and termination style are equivalent.

Q: What is the primary reason for substitution?

A: The 8121SY9ALE is classified as obsolete. The 8121SY9ARE is an active product within the same 8020 series, ensuring continued availability and manufacturer support.

Q: Are there compliance differences between these parts?

A: Both components are RoHS compliant. The 8121SY9ARE carries ROHS3 certification, representing a more current regulatory standard. Both maintain MSL 1 moisture sensitivity classification.

Q: Does packaging affect component selection?

A: Packaging format (bulk versus tray) does not affect electrical or mechanical performance. Selection depends on procurement requirements and assembly processes. The 8121SY9ARE is supplied in tray packaging.

Q: Are the electrical life ratings identical?

A: Yes. Both the 8121SY9ALE and 8121SY9ARE are rated for 60,000 electrical cycles, ensuring equivalent operational longevity.

Q: What is the base product number for these components?

A: Both components are derived from the base product number 8121SY within the C&K 8020 series.