PTS645SH95 Equivalent & Substitute Parts

Part Overview

The PTS645SH95 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 design with a 9.50mm actuator height and 6.00mm x 6.00mm outline. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain the same electrical circuit configuration and mechanical mounting characteristics while offering improved availability and extended product lifecycle status.

Substiute Parts

PTS645SH95

C&KIn Stock: 963PTS645SH95 Datasheet

Current PartRFQ

PTS645SH95-2 LFS

C&KIn Stock: 9909PTS645SH95-2 LFS Datasheet

DirectRFQ

TL1105BF250Q

E-SwitchIn Stock: 16087TL1105BF250Q Datasheet

DirectRFQ

TL1105BF160Q

E-SwitchIn Stock: 10134TL1105BF160Q Datasheet

SimilarRFQ

TL59BF160Q

E-SwitchIn Stock: 4592TL59BF160Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

• Electrical Compatibility: Circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), and switch function (Off-Mom) must be identical
• Mechanical Compatibility: Mounting type (Through Hole), actuator orientation (Top Actuated), termination style (PC Pin), and actuator height (9.50mm) must match
• Physical Footprint: Outline dimensions must accommodate PCB layout constraints
• Reliability: Mechanical life rating of 100,000 cycles minimum
• Regulatory Compliance: RoHS3 compliance and REACH unaffected status

The substitute parts are grouped into two categories:

Direct Equivalent: PTS645SH95-2 LFS maintains identical specifications with extended operating temperature range and active product status.

Compatible Alternatives: TL1105BF250Q, TL1105BF160Q, and TL59BF160Q are functionally equivalent with variations in operating force, actuator material, and outline dimensions within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: PTS645SH95-2 LFS

This C&K part is the direct equivalent with active product status. It maintains identical electrical and mechanical specifications to the PTS645SH95 while offering extended operating temperature range (-40°C to 85°C versus -10°C to 60°C). ROHS3 compliance provides enhanced regulatory alignment. This part is preferred for direct replacement in existing designs.

Secondary Recommendations: E-Switch TL1105 Series

The TL1105BF250Q and TL1105BF160Q are functionally compatible alternatives from E-Switch with active product status and ROHS3 compliance. These parts maintain identical electrical ratings, mounting configuration, and mechanical life. Operating force variations (250gf and 160gf respectively, compared to 200gf) represent minor tactile feedback differences within acceptable engineering tolerances for SPST-NO applications. Operating temperature range (-20°C to 70°C) is suitable for most industrial and commercial applications.

Tertiary Recommendation: E-Switch TL59BF160Q

This part offers functional compatibility with identical electrical specifications and mechanical life. The outline dimension of 6.20mm x 6.20mm represents a 0.20mm increase in both axes, requiring PCB layout verification. Actuator material composition (PBT versus PA66) provides alternative material properties. This option is suitable when PCB space permits the slightly larger footprint.

Frequently Asked Questions (FAQ)

Q: Can PTS645SH95-2 LFS be used as a direct drop-in replacement for PTS645SH95?

A: Yes. PTS645SH95-2 LFS maintains identical electrical circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), mounting type (Through Hole), actuator height (9.50mm), outline dimensions (6.00mm x 6.00mm), and termination style (PC Pin). The extended operating temperature range and active product status make it the preferred direct equivalent.

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

A: Operating force (measured in grams-force) determines the tactile feedback and actuation pressure required. The PTS645SH95 specifies 200gf. Substitute parts offer 160gf (TL1105BF160Q, TL59BF160Q) or 250gf (TL1105BF250Q). These variations affect user perception of switch actuation but do not impact electrical performance for SPST-NO applications. Selection depends on application-specific tactile requirements.

Q: Are there PCB layout considerations when substituting with TL59BF160Q?

A: Yes. The TL59BF160Q outline dimension is 6.20mm x 6.20mm compared to 6.00mm x 6.00mm for the main part and other substitutes. PCB footprint and component spacing must accommodate this 0.20mm increase in both axes. All other mechanical parameters (actuator height, termination style, mounting type) remain compatible.

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

A: All substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The original PTS645SH95 carries RoHS compliance (earlier standard). All parts maintain MSL 1 (Unlimited) moisture sensitivity level and identical ECCN and HTSUS classifications.

Q: What is the significance of product status (Obsolete vs. Active)?

A: Product status indicates manufacturer support and availability. The PTS645SH95 is obsolete, meaning C&K no longer manufactures or supports this part. All substitute parts carry active status, ensuring ongoing availability, manufacturing support, and compliance with current standards. Active status is essential for long-term production continuity.

Q: Can TL1105BF250Q and TL1105BF160Q be used interchangeably?

A: Both parts are mechanically and electrically compatible with identical outline dimensions, mounting configuration, and electrical specifications. The primary difference is operating force (250gf versus 160gf). Selection between these two depends on the specific tactile feedback requirement for the application. They cannot be used interchangeably if operating force is a critical design parameter.