PTS645SL50SM Equivalent & Substitute Parts

Part Overview

The PTS645SL50SM 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

PTS645SL50SM

C&KIn Stock: 804PTS645SL50SM Datasheet

Current PartRFQ

PTS645SL50SMTR92 LFS

C&KIn Stock: 45978PTS645SL50SMTR92 LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PTS645SL50SM is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: SPST-NO topology must be maintained
• Contact Rating: 0.05A @ 12VDC electrical specification
• Mounting Type: Surface mount with gull wing termination
• Physical Dimensions: 6.00mm x 6.00mm outline and 5.00mm actuator height
• Actuator Characteristics: Top actuation with 130gf operating force
• Mechanical Durability: 100,000 cycle minimum life
• Material Composition: Polyamide (PA66) actuator material
• Environmental Compliance: RoHS and REACH compliance status

The substitute part PTS645SL50SMTR92 LFS maintains identical electrical and mechanical specifications while differing only in packaging format (Tape & Reel versus individual packaging) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The PTS645SL50SMTR92 LFS is a direct functional equivalent to the obsolete PTS645SL50SM. Both components share identical electrical specifications, mechanical characteristics, and physical dimensions. The substitute part carries Active product status and is available in high volume (45,947 pieces in stock versus 764 pieces for the original), ensuring supply chain continuity.

The primary distinction is packaging format: the substitute is supplied in Tape & Reel configuration, which is standard for high-volume production environments. The substitute also provides an extended operating temperature range (-40°C to 85°C versus -10°C to 60°C), offering greater thermal margin for demanding applications.

Both parts maintain equivalent RoHS and REACH compliance certifications, with the substitute meeting ROHS3 specifications. Selection between these parts should be based on packaging requirements and volume needs rather than functional or electrical considerations.

Frequently Asked Questions (FAQ)

Q: Can PTS645SL50SMTR92 LFS be used as a direct replacement for PTS645SL50SM?

A: Yes. Both parts are electrically and mechanically identical. They share the same SPST-NO circuit configuration, 0.05A @ 12VDC contact rating, 6.00mm x 6.00mm outline, 5.00mm actuator height, and 130gf operating force. The substitute is the recommended choice due to its Active product status and superior availability.

Q: What is the difference between the two part numbers?

A: The primary difference is packaging. PTS645SL50SM is supplied in individual packaging, while PTS645SL50SMTR92 LFS is supplied in Tape & Reel format. The substitute also features an extended operating temperature range (-40°C to 85°C versus -10°C to 60°C) and carries ROHS3 certification.

Q: Are there any compatibility concerns when switching from PTS645SL50SM to PTS645SL50SMTR92 LFS?

A: No compatibility concerns exist. Both parts have identical PCB footprints, termination styles (gull wing), and electrical characteristics. Tape & Reel packaging is compatible with standard pick-and-place assembly equipment.

Q: Which part should be specified for new designs?

A: PTS645SL50SMTR92 LFS should be specified for new designs. It is the active product with established supply chain support and higher inventory levels.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS and REACH compliant. The substitute meets ROHS3 specifications, providing enhanced compliance documentation for regulated applications.