PTS645SH50 Equivalent & Substitute Parts

Part Overview

The PTS645SH50 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. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

PTS645SH50

C&KIn Stock: 895PTS645SH50 Datasheet

Current PartRFQ

PTS645SH50-2 LFS

C&KIn Stock: 46857PTS645SH50-2 LFS Datasheet

DirectRFQ

TL1105AF160Q

E-SwitchIn Stock: 20688TL1105AF160Q Datasheet

SimilarRFQ

TL59AF260Q-KR

E-SwitchIn Stock: 17541TL59AF260Q-KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PTS645SH50 is determined by strict alignment across the following critical parameters:

• Circuit Configuration: Must be SPST-NO
• Contact Rating: Must be 0.05A @ 12VDC
• Mounting Type: Must be Through Hole
• Actuator Orientation: Must be Top Actuated
• Actuator Height: Must be 5.00mm
• Outline Dimensions: Must be 6.00mm x 6.00mm (or within mechanical tolerance)
• Termination Style: Must be PC Pin
• Mechanical Life: Must be 100,000 Cycles minimum

All identified substitute parts meet these core electrical and mechanical criteria. Variations in operating force, operating temperature range, actuator material composition, and switch travel are secondary parameters that do not prevent functional substitution but must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

PTS645SH50-2 LFS (C&K): This is the direct successor from the same manufacturer. It maintains identical electrical and mechanical specifications to the PTS645SH50 while offering an extended operating temperature range (-40°C to 85°C versus -10°C to 60°C) and upgraded RoHS3 compliance. This part is the preferred substitute for direct replacement applications and is currently in active production with substantial inventory availability.

TL1105AF160Q (E-Switch): This cross-manufacturer substitute meets all core substitution criteria with identical circuit configuration, contact rating, mounting type, and actuator geometry. The operating force is reduced to 160gf (compared to 200gf), and the operating temperature range is -20°C to 70°C. This part is suitable for applications where the lower actuation force is acceptable and the temperature range is adequate.

TL59AF260Q-KR (E-Switch): This alternative meets all core electrical and mechanical requirements with a slightly larger outline (6.20mm x 6.20mm versus 6.00mm x 6.00mm). The operating force is increased to 260gf, and the actuator material is PBT rather than polyamide. This part is suitable for applications requiring higher actuation force and can accommodate the minor dimensional variation. Packaging is provided in cut tape format.

Frequently Asked Questions (FAQ)

Q: Can PTS645SH50-2 LFS be used as a direct replacement for PTS645SH50?

A: Yes. The PTS645SH50-2 LFS maintains identical electrical specifications (0.05A @ 12VDC), circuit configuration (SPST-NO), mounting type (through hole), actuator height (5.00mm), and outline dimensions (6.00mm x 6.00mm). The extended operating temperature range and improved RoHS3 compliance make it a superior direct replacement.

Q: What is the difference between the operating force values across these parts?

A: Operating force is the pressure required to actuate the switch. PTS645SH50 and PTS645SH50-2 LFS require 200gf, TL1105AF160Q requires 160gf, and TL59AF260Q-KR requires 260gf. Selection depends on the tactile feedback and actuation pressure requirements of the specific application.

Q: Are there dimensional compatibility concerns with TL59AF260Q-KR?

A: The TL59AF260Q-KR has a slightly larger outline (6.20mm x 6.20mm) compared to the original 6.00mm x 6.00mm specification. PCB layout and mechanical clearance must be verified before substitution.

Q: What is the significance of the different packaging options?

A: Packaging affects handling, storage, and assembly processes. PTS645SH50-2 LFS is supplied in bags, TL1105AF160Q in bulk, and TL59AF260Q-KR in cut tape. Selection depends on production volume, automated assembly capabilities, and inventory management requirements.

Q: Do all substitute parts meet the same compliance standards?

A: All substitute parts are RoHS3 compliant, REACH unaffected, and classified as EAR99 with identical HTSUS codes. Moisture sensitivity level is 1 (unlimited) for all parts, indicating no special storage or handling requirements.

Q: Can TL1105AF160Q be used if the application requires 200gf operating force?

A: No. The TL1105AF160Q has a 160gf operating force, which is 40gf lower than the original specification. If the application design requires 200gf actuation force, either PTS645SH50-2 LFS or TL59AF260Q-KR must be used.