PTS645VH39 Equivalent & Substitute Parts

Part Overview

The PTS645VH39 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 side actuation, through-hole right-angle mounting, and is designed for applications requiring momentary switching functionality. The part is currently listed as obsolete, necessitating identification of equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

PTS645VH39

C&KIn Stock: 972PTS645VH39 Datasheet

Current PartRFQ

PTS645VH39-2 LFS

C&KIn Stock: 6288PTS645VH39-2 LFS Datasheet

DirectRFQ

TL1105VF160Q

E-SwitchIn Stock: 19691TL1105VF160Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PTS645VH39 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (momentary operation)
• Contact rating: 0.05A @ 12VDC
• Mounting type: Through Hole, Right Angle
• Actuator orientation: Side Actuated
• Termination style: PC Pin
• Mechanical life: 100,000 Cycles minimum

Secondary Compatibility Parameters:

• Actuator length: 3.85mm (allows for minor dimensional variations in outline)
• Operating force: 200gf nominal (tolerance range acceptable)
• Actuator material: Polyamide (PA66/PA) construction
• Moisture sensitivity level: MSL 1 (Unlimited)

Two substitute parts meet these criteria: PTS645VH39-2 LFS (direct C&K series continuation) and TL1105VF160Q (cross-manufacturer equivalent from E-Switch). Both maintain electrical equivalence and mechanical compatibility within specified tolerances.

Parameter Comparison

Engineering Selection Recommendations

PTS645VH39-2 LFS is the primary substitute for direct replacement applications. This part maintains identical electrical specifications, mechanical dimensions, and actuator characteristics as the original PTS645VH39. The extended operating temperature range (-40°C ~ 85°C) and ROHS3 compliance provide enhanced environmental performance. Active product status ensures long-term availability and supply chain continuity.

TL1105VF160Q serves as a cross-manufacturer equivalent for applications where C&K series availability is constrained. This E-Switch component maintains electrical equivalence and core mechanical compatibility. The reduced operating force (160gf versus 200gf) and slightly smaller outline dimensions (7.10mm x 6.55mm versus 7.50mm x 7.10mm) represent minor parameter variations. The operating temperature range (-20°C ~ 70°C) is narrower than the original specification but covers standard industrial operating conditions. ROHS3 compliance and active product status support procurement reliability.

Frequently Asked Questions (FAQ)

Q: Can PTS645VH39-2 LFS be used as a direct drop-in replacement for PTS645VH39?

A: Yes. Both parts share identical circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), mounting type (Through Hole, Right Angle), actuator length (3.85mm), outline dimensions (7.50mm x 7.10mm), and mechanical life (100,000 cycles). The extended operating temperature range and ROHS3 compliance of the substitute provide equivalent or improved performance.

Q: What are the key differences between PTS645VH39-2 LFS and TL1105VF160Q?

A: Both parts maintain electrical equivalence and side-actuated through-hole right-angle mounting. The primary differences are: (1) Operating force: PTS645VH39-2 LFS operates at 200gf, while TL1105VF160Q operates at 160gf; (2) Outline dimensions: PTS645VH39-2 LFS measures 7.50mm x 7.10mm, while TL1105VF160Q measures 7.10mm x 6.55mm; (3) Operating temperature range: PTS645VH39-2 LFS supports -40°C ~ 85°C, while TL1105VF160Q supports -20°C ~ 70°C; (4) Manufacturer: C&K versus E-Switch.

Q: Is the 160gf operating force of TL1105VF160Q acceptable as a substitute for the 200gf specification?

A: The TL1105VF160Q operates at 160gf, which differs from the original 200gf specification. This parameter variation must be evaluated against specific application requirements. Applications sensitive to actuation force characteristics should prioritize PTS645VH39-2 LFS for parameter matching.

Q: Are both substitute parts RoHS compliant?

A: Yes. PTS645VH39-2 LFS carries ROHS3 compliance, and TL1105VF160Q carries ROHS3 compliance. Both parts meet current regulatory requirements for restricted substance elimination.

Q: What is the inventory status for these substitute parts?

A: PTS645VH39-2 LFS has 6,192 pieces in stock. TL1105VF160Q has 19,629 pieces in stock. Both parts are classified as Active products with established supply availability.

Q: Do the outline dimension differences between PTS645VH39-2 LFS and TL1105VF160Q affect PCB layout compatibility?

A: The outline dimensions differ: PTS645VH39-2 LFS measures 7.50mm x 7.10mm, while TL1105VF160Q measures 7.10mm x 6.55mm. PCB footprints designed for the original PTS645VH39 (7.50mm x 7.10mm) will accommodate PTS645VH39-2 LFS without modification. TL1105VF160Q's smaller footprint may require PCB layout verification to confirm clearance and mounting compatibility.