PTS645SL70TR Equivalent & Substitute Parts

Part Overview

The PTS645SL70TR 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 compatible substitute parts essential for ongoing design support and procurement.

Substiute Parts

PTS645SL70TR

C&KIn Stock: 993PTS645SL70TR Datasheet

Current PartRFQ

TL59FF160Q

E-SwitchIn Stock: 12382TL59FF160Q Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PTS645SL70TR is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

• Circuit configuration must remain SPST-NO
• Contact rating must support minimum 0.05A @ 12VDC
• Switch function must be Off-Mom (momentary operation)

Mechanical Compatibility:

• Mounting type must be Through Hole
• Actuator orientation must be Top Actuated
• Termination style must be PC Pin
• Outline dimensions must accommodate PCB layout constraints
• Actuator height must be compatible with mechanical clearance requirements

Environmental & Compliance:

• Operating temperature range must encompass or exceed the original specification
• Mechanical life must meet or exceed 100,000 cycles
• RoHS and REACH compliance status must be maintained

The substitute part TL59FF160Q from E-Switch meets these criteria while offering an active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TL59FF160Q from E-Switch is a qualified substitute for the obsolete PTS645SL70TR. Selection is supported by:

Compliance & Availability:

• The substitute maintains RoHS3 compliance, meeting current regulatory requirements
• Active product status ensures ongoing availability and supply chain continuity
• REACH unaffected status is maintained

Functional Equivalence:

• Electrical specifications are identical across circuit configuration, contact rating, and switch function
• Mechanical interface compatibility is confirmed for through-hole mounting with PC pin termination
• Actuator height and orientation remain unchanged

Design Considerations:

• Outline dimensions increase from 6.00mm x 6.00mm to 6.20mm x 6.20mm; verify PCB layout accommodates this minor increase
• Operating force increases from 130gf to 160gf; confirm user interface and mechanical design accept this variance
• Operating temperature range extends from -10°C ~ 60°C to -20°C ~ 70°C, providing improved environmental performance

Frequently Asked Questions (FAQ)

Q: Can the TL59FF160Q be used as a direct replacement for the PTS645SL70TR?

A: Yes, with design verification. The substitute maintains electrical equivalence and mechanical interface compatibility. However, the 0.2mm increase in outline dimensions and 30gf increase in operating force require confirmation that PCB layout and user interface specifications accommodate these changes.

Q: What is the primary reason for substitution?

A: The PTS645SL70TR is obsolete. The TL59FF160Q provides functional and electrical equivalence while offering active manufacturing status and extended operating temperature range.

Q: Are there compliance differences between the two parts?

A: Both parts are RoHS compliant and REACH unaffected. The substitute meets ROHS3, the current standard revision, providing enhanced regulatory alignment.

Q: How do the operating force specifications affect compatibility?

A: The substitute requires 30gf additional actuation force (160gf vs. 130gf). This variance must be evaluated against user interface ergonomics and mechanical design constraints. If the original design operates near force limits, this difference may require user interface adjustment.

Q: Are there packaging differences?

A: The original part number does not specify packaging detail. The substitute is available in Cut Tape (CT) packaging. Confirm packaging format meets procurement and assembly requirements.

Q: What is the impact of the outline dimension increase?

A: The substitute outline increases from 6.00mm x 6.00mm to 6.20mm x 6.20mm. This 0.2mm variance on each side requires PCB layout verification to ensure adequate clearance and no interference with adjacent components.