YA-2RV196-D63 Equivalent & Substitute Parts

Part Overview

The YA-2RV196-D63 is a snap-action switch manufactured by Honeywell Sensing and Productivity Solutions, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device with chassis mount installation. This switch is rated for 20A AC at 125V and features a straight lever actuator with quick connect termination. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing applications and new designs requiring similar switching characteristics.

Substiute Parts

YA-2RV196-D63

Honeywell Sensing and Productivity SolutionsIn Stock: 937YA-2RV196-D63 Datasheet

Current PartRFQ

TFCJL3ST154AY

C&KIn Stock: 877TFCJL3ST154AY Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the YA-2RV196-D63 is determined by strict equivalence across the following critical parameters:

Circuit and Function Compatibility: The substitute must maintain SPST-NO circuit configuration with Off-Mom (momentary) switching function to preserve electrical behavior in the application.

Current and Voltage Ratings: The substitute must support minimum 20A AC current rating. AC voltage rating of the substitute must equal or exceed 125V. DC ratings are secondary considerations for AC-primary applications.

Mechanical Interface: Chassis mount installation and quick connect 0.250" (6.3mm) termination are mandatory for physical compatibility without redesign.

Actuator Configuration: Straight lever actuator type ensures consistent operator interface and mounting envelope compatibility.

Environmental and Compliance Requirements: Operating temperature range, RoHS compliance status, and moisture sensitivity classification must align with application requirements.

The TFCJL3ST154AY from C&K meets these substitution criteria through equivalent circuit configuration, matching current rating, compatible mounting and termination, and identical actuator type.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution: TFCJL3ST154AY is the designated equivalent for YA-2RV196-D63 applications based on matching circuit configuration, current rating, mounting interface, and termination style.

Compliance Advantage: The TFCJL3ST154AY carries Active product status with ROHS3 compliance, ensuring long-term availability and alignment with current regulatory standards. The obsolete YA-2RV196-D63 presents supply chain risk for new production.

Voltage Rating Consideration: The TFCJL3ST154AY is rated for 250V AC, exceeding the 125V requirement of the original part. This higher rating provides design margin and is acceptable for direct substitution in 125V applications.

Mechanical Travel Differences: The TFCJL3ST154AY exhibits shorter operating position (0.600" vs. 0.785"), reduced differential travel (0.030" vs. 0.075"), and reduced overtravel (0.065" vs. 0.090"). These differences require verification that mechanical clearances and actuator engagement points remain compatible within the application enclosure.

Operating Force Profile: The TFCJL3ST154AY operating force is 80gf compared to 85gf for the original part, representing a 5.9% reduction. Release force is 8gf versus 14gf, a 42.9% reduction. Applications sensitive to actuation force characteristics must evaluate whether this difference affects operator feel or unintended activation risk.

Temperature Range: The TFCJL3ST154AY minimum operating temperature is -40°C, compared to -55°C for the original part. Applications requiring operation below -40°C must retain the YA-2RV196-D63 or identify alternative sources.

Frequently Asked Questions (FAQ)

Q: Can TFCJL3ST154AY directly replace YA-2RV196-D63 without circuit modification?

A: Yes, for applications operating at 125V AC with 20A current requirements. Both parts share identical SPST-NO circuit configuration, momentary function, and quick connect termination. No electrical circuit changes are required. Mechanical mounting verification is necessary due to differences in travel distances.

Q: Why is the TFCJL3ST154AY voltage rating 250V when the application only requires 125V?

A: Higher voltage rating indicates the component can safely operate at voltages up to 250V AC. Operating at 125V is well within this capability and presents no compatibility issue. The higher rating provides design margin and does not affect performance at lower voltages.

Q: What is the significance of the reduced operating force in TFCJL3ST154AY?

A: The TFCJL3ST154AY requires 80gf actuation force versus 85gf for the original part. This 5gf difference is within typical manufacturing tolerance bands for snap-action switches. Applications where operator actuation force is critical should evaluate whether this reduction affects usability or introduces unintended activation risk.

Q: Does the shorter operating position of TFCJL3ST154AY affect mechanical compatibility?

A: The TFCJL3ST154AY operating position is 0.600" compared to 0.785" for YA-2RV196-D63. This 0.185" difference requires verification that the application enclosure provides adequate clearance for the lever actuator throughout its travel range. Mechanical redesign may be necessary if clearance is insufficient.

Q: Is TFCJL3ST154AY suitable for applications requiring -55°C operation?

A: No. The TFCJL3ST154AY minimum operating temperature is -40°C. Applications requiring operation at -55°C must retain the YA-2RV196-D63 or identify alternative components with extended low-temperature ratings.

Q: What is the packaging difference between these parts?

A: YA-2RV196-D63 is supplied in standard packaging format. TFCJL3ST154AY is supplied in Bulk packaging. Bulk packaging is suitable for production assembly and does not affect component functionality or performance.

Q: Are both parts RoHS compliant?

A: Yes. YA-2RV196-D63 is RoHS Compliant. TFCJL3ST154AY is ROHS3 Compliant, meeting the current regulatory standard. Both parts are suitable for applications with RoHS compliance requirements.

Q: What is the mechanical life expectancy of TFCJL3ST154AY?

A: Mechanical life data for TFCJL3ST154AY is not provided in the available specifications. The original YA-2RV196-D63 specifies 20,000,000 cycles. Contact the manufacturer for detailed mechanical life information if cycle count is a critical application parameter.