E121SD1AV3LE Equivalent & Substitute Parts

Part Overview

The E121SD1AV3LE is a pushbutton switch manufactured by C&K, classified as SPDT (Single Pole Double Throw) with a standard through-hole, right-angle vertical mounting configuration. This component is rated for 1A at 120V AC and 28V DC, featuring a round plunger actuator with white coloring and PC pin termination.

The E121SD1AV3LE carries an obsolete product status. 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

E121SD1AV3LE

C&KIn Stock: 1009E121SD1AV3LE Datasheet

Current PartRFQ

E121SD1AV3RE

C&KIn Stock: 1035E121SD1AV3RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the E121SD1AV3LE is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPDT
• Switch function: On-Mom (momentary operation)
• Current rating: 1A (AC/DC)
• Voltage ratings: 120V AC and 28V DC
• Mounting type: Through hole, right angle, vertical orientation
• Actuator type: Round plunger with white coloring
• Termination style: PC pin
• Operating temperature range: -30°C to 75°C
• Electrical life: 60,000 cycles
• RoHS compliance status

The E121SD1AV3RE qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction is product status: E121SD1AV3RE is active, whereas E121SD1AV3LE is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The E121SD1AV3RE is the direct equivalent for the obsolete E121SD1AV3LE. Both components share identical electrical specifications, mechanical configuration, and environmental ratings. The E121SD1AV3RE maintains active product status with current manufacturing support and availability.

Both parts satisfy RoHS compliance requirements and REACH regulatory status. The E121SD1AV3RE is classified under the same HTSUS code and ECCN designation, confirming functional and regulatory equivalence.

For applications currently utilizing the E121SD1AV3LE, transition to the E121SD1AV3RE provides continuity of electrical performance, mechanical fit, and compliance posture without design modification.

Frequently Asked Questions (FAQ)

Q: Can the E121SD1AV3RE directly replace the E121SD1AV3LE in existing designs?

A: Yes. The E121SD1AV3RE is electrically and mechanically equivalent. Both components feature identical SPDT circuit configuration, 1A current rating at 120V AC and 28V DC, through-hole right-angle vertical mounting, round white plunger actuator, and PC pin termination. No design changes are required.

Q: What is the primary difference between these two parts?

A: Product status. The E121SD1AV3LE is obsolete, while the E121SD1AV3RE is active. The E121SD1AV3RE is the current production equivalent with ongoing manufacturer support.

Q: Are there packaging differences between the E121SD1AV3LE and E121SD1AV3RE?

A: The E121SD1AV3LE is supplied with standard packaging, while the E121SD1AV3RE is supplied in bulk packaging. Both configurations contain the identical component.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS compliant and REACH unaffected. Both carry EAR99 ECCN classification and the same HTSUS code (8536.50.9031), confirming regulatory equivalence.

Q: What is the electrical life specification for these switches?

A: Both the E121SD1AV3LE and E121SD1AV3RE are rated for 60,000 electrical cycles under specified operating conditions.

Q: Are there temperature or environmental limitations for these components?

A: Both parts operate within the range of -30°C to 75°C. Both carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.