PTS645SH50SM Equivalent & Substitute Parts

Part Overview

The PTS645SH50SM is a tactile switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a contact rating of 0.05A at 12VDC. This surface mount component features top actuation with a 6.00mm x 6.00mm outline and 5.00mm actuator height. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications.

Substiute Parts

PTS645SH50SM

C&KIn Stock: 834PTS645SH50SM Datasheet

Current PartRFQ

PTS645SH50SMTR92 LFS

C&KIn Stock: 37149PTS645SH50SMTR92 LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PTS645SH50SM has one direct substitute within the same product family: PTS645SH50SMTR92 LFS. Substitution eligibility is determined by the following critical parameters that must remain identical:

• Circuit configuration (SPST-NO)
• Contact rating (0.05A @ 12VDC)
• Mounting type (Surface Mount)
• Actuator height (5.00mm)
• Outline dimensions (6.00mm x 6.00mm)
• Actuator orientation (Top Actuated)
• Termination style (Gull Wing)
• Operating force (200gf)
• Mechanical life (100,000 Cycles)
• Actuator material (Polyamide PA66, Nylon 6/6)

The substitute part differs only in packaging format (Tape & Reel versus bulk), product status (Active versus Obsolete), operating temperature range, and RoHS certification level. These differences do not affect functional compatibility in the application.

Parameter Comparison

Engineering Selection Recommendations

The PTS645SH50SMTR92 LFS is a direct functional equivalent to the obsolete PTS645SH50SM. Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin and footprint compatibility. The substitute part is currently in active production status, providing supply continuity for applications requiring this tactile switch configuration.

The primary distinction is packaging format: the original part is supplied in bulk, while the substitute is supplied in Tape & Reel format. This packaging difference does not affect component performance or PCB assembly compatibility when using standard pick-and-place equipment.

The substitute part offers an extended operating temperature range (-40°C to 85°C versus -10°C to 60°C), which provides additional thermal margin for demanding environments. Both parts maintain RoHS compliance, with the substitute meeting ROHS3 specifications.

Frequently Asked Questions (FAQ)

Q: Can PTS645SH50SMTR92 LFS be used as a direct replacement for PTS645SH50SM?

A: Yes. Both parts are electrically and mechanically identical. They share the same circuit configuration, contact rating, actuator specifications, and mechanical life rating. PCB footprints and solder pad layouts are identical, enabling direct substitution without design modification.

Q: What is the difference between the bulk and Tape & Reel packaging?

A: Bulk packaging supplies individual components, while Tape & Reel packaging supplies components on continuous carrier tape wound on reels. Tape & Reel format is optimized for automated assembly processes. Both formats contain the same component; the difference is in delivery and handling method.

Q: Does the extended operating temperature range of the substitute part affect compatibility?

A: No. The substitute part's wider operating temperature range (-40°C to 85°C) is a superset of the original part's range (-10°C to 60°C). This provides additional thermal capability without compromising compatibility in applications operating within the original temperature specification.

Q: Are there any compliance differences between the two parts?

A: Both parts are RoHS compliant. The substitute meets ROHS3 specifications, which represents a current compliance standard. Both parts are REACH Unaffected and carry the same ECCN and HTSUS classifications.

Q: Why is the original part listed as obsolete?

A: Product obsolescence typically reflects manufacturing discontinuation. The substitute part, being in active production status, ensures continued availability for new designs and replacement requirements.