PTS645TL50 Equivalent & Substitute Parts

Part Overview

The PTS645TL50 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 through-hole mounted switch features a top-actuated standard actuator with a 6.00mm x 6.00mm outline and grounding pin functionality. The product is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and component procurement.

Substiute Parts

PTS645TL50

C&KIn Stock: 1064PTS645TL50 Datasheet

Current PartRFQ

PTS645TL50-2 LFS

C&KIn Stock: 4519PTS645TL50-2 LFS Datasheet

DirectRFQ

TLE1105AF160Q

E-SwitchIn Stock: 7526TLE1105AF160Q Datasheet

SimilarRFQ

TLE1105F100Q

E-SwitchIn Stock: 775TLE1105F100Q Datasheet

SimilarRFQ

TLE1105F160Q

E-SwitchIn Stock: 3942TLE1105F160Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PTS645TL50 is determined by strict equivalence across the following critical parameters: circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), mounting type (through hole), actuator orientation (top actuated), outline dimensions (6.00mm x 6.00mm), termination style (PC pin), and grounding pin feature. Variations in operating force, actuator height, operating temperature range, and product status are documented but do not disqualify a part from functional substitution within the specified electrical and mechanical constraints.

The substitute parts are grouped as follows:

Direct Equivalent (Same Manufacturer): PTS645TL50-2 LFS maintains identical electrical specifications and mechanical form factor with improved product status (active vs. obsolete) and extended operating temperature range.

Cross-Manufacturer Alternatives (E-Switch TLE1105 Series): TLE1105F100Q, TLE1105AF160Q, and TLE1105F160Q provide functional equivalence with identical circuit configuration, contact rating, mounting type, and outline dimensions. These parts differ in operating force (100gf or 160gf vs. 130gf), actuator height (4.30mm vs. 5.00mm), and operating temperature range (-20°C ~ 70°C vs. -10°C ~ 60°C).

Parameter Comparison

Engineering Selection Recommendations

PTS645TL50-2 LFS is the primary recommended substitute. As an active product from the same manufacturer (C&K), it maintains identical electrical and mechanical specifications to the obsolete PTS645TL50 while offering improved product status and extended operating temperature range (-40°C ~ 85°C vs. -10°C ~ 60°C). Both parts carry ROHS3 compliance and unlimited MSL rating, ensuring regulatory alignment and environmental stability.

E-Switch TLE1105 Series (TLE1105F100Q, TLE1105AF160Q, TLE1105F160Q) provides cross-manufacturer substitution for applications where C&K parts are unavailable. All three variants maintain identical circuit configuration, contact rating, mounting type, outline dimensions, and grounding pin feature. Selection within this series depends on operating force requirements and actuator height constraints:

• TLE1105F100Q: 100gf operating force, 4.30mm actuator height
• TLE1105AF160Q: 160gf operating force, 5.00mm actuator height (closest match to original 130gf specification)
• TLE1105F160Q: 160gf operating force, 4.30mm actuator height

All E-Switch alternatives are active products with ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can PTS645TL50-2 LFS be used as a direct replacement for PTS645TL50?

A: Yes. Both parts share identical electrical specifications (0.05A @ 12VDC, SPST-NO), mechanical form factor (6.00mm x 6.00mm outline, 5.00mm actuator height), and operating force (130gf). The primary difference is product status (active vs. obsolete) and operating temperature range extension.

Q: What are the key differences between C&K PTS645TL50-2 LFS and E-Switch TLE1105 series?

A: Both maintain identical circuit configuration, contact rating, mounting type, and outline dimensions. Differences include manufacturer, operating force (130gf vs. 100gf or 160gf), actuator height (5.00mm vs. 4.30mm for some variants), and operating temperature range (-40°C ~ 85°C for C&K vs. -20°C ~ 70°C for E-Switch).

Q: Which E-Switch TLE1105 variant is closest to the original PTS645TL50?

A: TLE1105AF160Q most closely matches the original specification, offering 5.00mm actuator height identical to PTS645TL50. However, its 160gf operating force differs from the original 130gf. TLE1105F100Q provides lower operating force (100gf) but with reduced actuator height (4.30mm).

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. PTS645TL50-2 LFS and all E-Switch TLE1105 variants carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

Q: What is the impact of operating force variation on substitution?

A: Operating force (100gf, 130gf, or 160gf) affects actuator tactile feedback and activation pressure. Selection should align with application requirements. Variations within this range do not affect electrical performance or circuit compatibility.

Q: Can actuator height differences affect PCB layout?

A: Yes. PTS645TL50 and TLE1105AF160Q feature 5.00mm actuator height, while TLE1105F100Q and TLE1105F160Q feature 4.30mm height. Verify clearance requirements in enclosure design before substitution.