PTS645SL70 Equivalent & Substitute Parts

Part Overview

The PTS645SL70 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 x 6.00mm outline with 7.00mm actuator height. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

PTS645SL70

C&KIn Stock: 1077PTS645SL70 Datasheet

Current PartRFQ

PTS645SL702 LFS

C&KIn Stock: 48883PTS645SL702 LFS Datasheet

DirectRFQ

TL1105FF100Q

E-SwitchIn Stock: 5367TL1105FF100Q Datasheet

SimilarRFQ

TL59FF160Q

E-SwitchIn Stock: 12382TL59FF160Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PTS645SL70 is determined by strict alignment with the following electrical and mechanical parameters:

• Circuit configuration must be SPST-NO
• Contact rating must support 0.05A @ 12VDC minimum
• Mounting type must be through-hole with PC pin termination
• Actuator height must be 7.00mm (±tolerance acceptable within standard PCB design margins)
• Outline footprint must be compatible with 6.00mm x 6.00mm spacing
• Actuator orientation must be top-actuated
• Mechanical life must meet or exceed 100,000 cycles
• Operating temperature range must encompass the application environment

The substitute parts identified below meet these core criteria while maintaining functional equivalence for standard tactile switch applications.

Parameter Comparison

Engineering Selection Recommendations

PTS645SL702 LFS is the primary direct substitute. This C&K component maintains identical electrical specifications and mechanical dimensions while offering extended operating temperature range (-40°C ~ 85°C versus -10°C ~ 60°C) and active product status. ROHS3 compliance provides enhanced regulatory alignment compared to the original RoHS Compliant designation.

TL1105FF100Q and TL59FF160Q are functionally equivalent alternatives from E-Switch. Both maintain SPST-NO configuration, 0.05A @ 12VDC contact rating, and 7.00mm actuator height. Operating force differs (100gf and 160gf respectively versus 130gf), which affects tactile feedback characteristics but does not impact electrical function. Both are ROHS3 compliant with active product status.

TL59FF160Q exhibits a 6.20mm x 6.20mm outline, representing a minor dimensional variance from the 6.00mm x 6.00mm specification. This difference requires PCB layout verification to confirm footprint compatibility in existing designs.

Frequently Asked Questions (FAQ)

Q: Can PTS645SL702 LFS directly replace PTS645SL70 without PCB modification?

A: Yes. PTS645SL702 LFS maintains identical mechanical dimensions (6.00mm x 6.00mm outline, 7.00mm actuator height), electrical specifications (0.05A @ 12VDC, SPST-NO), and through-hole PC pin termination. No PCB layout changes are required.

Q: What is the significance of the operating force difference in TL1105FF100Q (100gf) and TL59FF160Q (160gf)?

A: Operating force determines the tactile feedback and actuation pressure required. The original PTS645SL70 specifies 130gf. TL1105FF100Q requires less force (100gf), while TL59FF160Q requires more (160gf). Selection depends on user interface requirements and mechanical design constraints. Electrical function remains unchanged across all variants.

Q: Is the 6.20mm x 6.20mm outline of TL59FF160Q compatible with PTS645SL70 PCB footprints?

A: The 0.20mm dimensional increase requires verification against PCB layout tolerances and adjacent component spacing. While functionally equivalent, physical footprint compatibility must be confirmed for each specific application before implementation.

Q: What compliance advantages does the active product status of substitute parts provide?

A: Active product status ensures ongoing manufacturing availability, supply chain continuity, and manufacturer support. The obsolete status of PTS645SL70 creates long-term sourcing risk. Substitute parts with active status provide production security and access to current manufacturing revisions.

Q: Are all substitute parts suitable for the full operating temperature range of -10°C ~ 60°C?

A: Yes. PTS645SL702 LFS (-40°C ~ 85°C), TL1105FF100Q (-20°C ~ 70°C), and TL59FF160Q (-20°C ~ 70°C) all encompass the original -10°C ~ 60°C range. Extended temperature ratings provide additional operational margin.