PTS645SL70TR LFS Equivalent & Substitute Parts

Part Overview

The PTS645SL70TR LFS 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 component features top actuation with a 6.00mm x 6.00mm outline and 7.00mm actuator height. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

PTS645SL70TR LFS

C&KIn Stock: 857PTS645SL70TR LFS Datasheet

Current PartRFQ

TL59FF160Q

E-SwitchIn Stock: 12382TL59FF160Q Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PTS645SL70TR LFS is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO
• Contact Rating: Must support 0.05A @ 12VDC minimum
• Mounting Type: Must be Through Hole
• Actuator Orientation: Must be Top Actuated
• Termination Style: Must be PC Pin
• Mechanical Life: Must meet or exceed 100,000 cycles
• Outline Compatibility: Physical dimensions must accommodate PCB layout constraints
• Operating Temperature: Must cover the required application range or be suitable for the intended operating environment

The substitute part TL59FF160Q from E-Switch meets these core electrical and mechanical requirements while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The TL59FF160Q from E-Switch serves as a direct functional substitute for the obsolete PTS645SL70TR LFS. Both components share identical circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), mounting type (Through Hole), actuator orientation (Top Actuated), and mechanical life specification (100,000 cycles).

The TL59FF160Q offers the advantage of active product status, ensuring long-term availability and supply chain continuity. Both parts maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements.

Physical outline dimensions differ slightly (6.20mm x 6.20mm versus 6.00mm x 6.00mm), requiring PCB layout verification to confirm accommodation within existing footprint constraints. Operating force differs (160gf versus 130gf), which may affect user interface feel but does not impact electrical functionality. The operating temperature range of the substitute (-20°C ~ 70°C) is narrower than the original (-40°C ~ 85°C), requiring confirmation that the application environment falls within this range.

Frequently Asked Questions (FAQ)

Q: Can TL59FF160Q directly replace PTS645SL70TR LFS without PCB modifications?

A: Electrical and functional compatibility is confirmed. Physical footprint verification is required due to outline dimension differences (6.20mm x 6.20mm versus 6.00mm x 6.00mm). PCB layout must accommodate the slightly larger footprint.

Q: What are the key differences between these two parts?

A: The primary differences are outline dimensions (0.2mm larger on each side for TL59FF160Q), operating force (160gf versus 130gf), actuator material composition (PBT versus PA66/Nylon 6/6), and operating temperature range (-20°C ~ 70°C versus -40°C ~ 85°C). Electrical specifications and mechanical life are identical.

Q: Is the operating temperature range difference significant?

A: The substitute part operates within -20°C ~ 70°C. Applications requiring operation below -20°C or above 70°C must be evaluated against actual environmental conditions. The original part supports -40°C ~ 85°C.

Q: Does the higher operating force (160gf) affect circuit operation?

A: Operating force affects tactile feedback and user interface feel but does not impact electrical switching characteristics. Both parts maintain identical contact rating and circuit configuration.

Q: Are both parts RoHS compliant?

A: Yes. PTS645SL70TR LFS is RoHS Compliant. TL59FF160Q is ROHS3 Compliant. Both satisfy RoHS requirements and are REACH Unaffected.

Q: What packaging is available for the substitute part?

A: TL59FF160Q is supplied in Cut Tape (CT) packaging with 12,281 pieces currently in stock.