PTS645SL95 Equivalent & Substitute Parts Reference

Part Overview

The PTS645SL95 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 component features top actuation, through-hole mounting, and a 6.00mm × 6.00mm outline suitable for PCB integration. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain functional equivalence through matching electrical specifications, mechanical compatibility, and environmental operating ranges.

Substiute Parts

PTS645SL95

C&KIn Stock: 806PTS645SL95 Datasheet

Current PartRFQ

PTS645SL95-2 LFS

C&KIn Stock: 10701PTS645SL95-2 LFS Datasheet

DirectRFQ

TL1105BF100Q

E-SwitchIn Stock: 10221TL1105BF100Q Datasheet

SimilarRFQ

TL1105BF160Q

E-SwitchIn Stock: 10134TL1105BF160Q Datasheet

SimilarRFQ

TL1105BF250Q

E-SwitchIn Stock: 16087TL1105BF250Q Datasheet

SimilarRFQ

TL1105GF160Q

E-SwitchIn Stock: 1567TL1105GF160Q Datasheet

SimilarRFQ

TL1105GF250Q

E-SwitchIn Stock: 3870TL1105GF250Q Datasheet

SimilarRFQ

TL59BF160Q

E-SwitchIn Stock: 4592TL59BF160Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Primary Compatibility Criteria:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (Momentary)
• Contact rating: 0.05A @ 12VDC
• Mounting type: Through Hole
• Actuator orientation: Top Actuated
• Termination style: PC Pin
• Outline dimensions: 6.00mm × 6.00mm (with tolerance for minor variations)
• Mechanical life: 100,000 Cycles minimum

Secondary Compatibility Considerations:

• Actuator height: 9.50mm nominal (9.70mm acceptable for E-Switch TL1105 series)
• Operating force: 130gf baseline (100gf to 250gf range acceptable)
• Operating temperature: Must encompass or exceed -10°C ~ 60°C
• RoHS and REACH compliance status

Substitute parts are grouped into two categories: direct equivalents (same manufacturer, same series) and similar alternatives (different manufacturer, functionally equivalent).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute): PTS645SL95-2 LFS is the direct equivalent manufactured by C&K in the same PTS645 series. This part maintains identical mechanical and electrical specifications with improved product status (Active vs. Obsolete) and extended operating temperature range (-40°C ~ 85°C vs. -10°C ~ 60°C). RoHS3 compliance provides enhanced regulatory alignment. This part is the preferred substitute for direct replacement without design modification.

Alternative Substitutes (E-Switch TL1105 Series): The E-Switch TL1105 series provides functional equivalence across multiple operating force options (100gf, 160gf, 250gf). All variants maintain identical electrical ratings, through-hole mounting, and 6.00mm × 6.00mm outline. Operating temperature range (-20°C ~ 70°C) encompasses the original specification. The TL1105BF160Q provides the closest operating force match (160gf vs. 130gf). All E-Switch variants are Active products with ROHS3 compliance.

Alternative Substitute (E-Switch TL59 Series): The TL59BF160Q offers functional equivalence with a slightly larger outline (6.20mm × 6.20mm). This part is suitable only when PCB layout permits the minor dimensional increase. Operating force (160gf) and all electrical specifications remain compatible.

Compliance and Regulatory Status: All substitute parts maintain RoHS and REACH compliance equivalent to or exceeding the original PTS645SL95. Selection should prioritize Active product status to ensure long-term supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can PTS645SL95-2 LFS be used as a direct replacement for PTS645SL95? A: Yes. PTS645SL95-2 LFS is the direct equivalent from C&K with identical mechanical and electrical specifications. The extended operating temperature range (-40°C ~ 85°C) provides additional environmental margin. No design modification is required.

Q: What is the difference between E-Switch TL1105BF and TL1105GF variants? A: The primary difference is actuator height. BF variants measure 9.50mm (matching the original PTS645SL95), while GF variants measure 9.70mm. Both maintain identical electrical ratings and 6.00mm × 6.00mm outline. Selection depends on available PCB clearance above the switch.

Q: How do operating force variations (100gf, 160gf, 250gf) affect substitution? A: Operating force determines tactile feedback and actuation pressure. The original PTS645SL95 specifies 130gf. E-Switch TL1105BF160Q (160gf) provides the closest match. Lower force (100gf) reduces actuation pressure; higher force (250gf) increases it. Selection should be based on application requirements and user interface design.

Q: Is the TL59BF160Q suitable for direct PCB replacement? A: The TL59BF160Q is functionally equivalent but has a slightly larger outline (6.20mm × 6.20mm vs. 6.00mm × 6.00mm). It is suitable only if PCB layout permits this dimensional increase. Verify footprint clearance before selection.

Q: What packaging options are available for substitute parts? A: PTS645SL95-2 LFS is supplied in Bulk packaging. E-Switch TL1105 series parts are supplied in Bulk packaging. E-Switch TL59BF160Q is supplied in Cut Tape (CT) packaging. Packaging selection should align with procurement and assembly requirements.

Q: Do all substitute parts meet the same compliance standards? A: All substitute parts listed are RoHS3 compliant and REACH Unaffected, meeting or exceeding the regulatory requirements of the original PTS645SL95. Verify specific compliance documentation with the supplier for your application requirements.