LS8J6M-T

Part Overview

The LS8J6M-T is a tactile switch manufactured by Citizen, classified as SPST-NO (Single Pole Single Throw, Normally Open) with a contact rating of 0.02A at 12VDC. This component is designed for surface mount applications with top actuated oval button actuation and 0.20mm switch travel. The product is currently in Obsolete status, necessitating identification of functionally equivalent alternatives for continued design support and procurement.

Substiute Parts

LS8J6M-T

CitizenIn Stock: 38370LS8J6M-T Datasheet

Current PartRFQ

EVQ-P9P02W

Panasonic Electronic ComponentsIn Stock: 6250EVQ-P9P02W Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LS8J6M-T is determined by strict electrical and mechanical compatibility criteria. The primary electrical parameter is the circuit type (SPST-NO) and switch function (Off-Mom), which must remain constant. The contact rating voltage tolerance allows substitution with parts rated for equal or higher voltage (the LS8J6M-T operates at 12VDC; alternatives may be rated for 15VDC or higher). Mechanical compatibility depends on matching or exceeding the following specifications: surface mount mounting type, top actuated orientation, actuator height of 2.50mm, switch travel of 0.20mm or less, and outline dimensions within acceptable PCB layout constraints. Operating force variance is acceptable within engineering tolerance ranges. The substitute part must maintain SPST-NO circuit functionality and be currently available (Active product status preferred, though obsolete parts with documented inventory may be considered).

Parameter Comparison

Engineering Selection Recommendations

The EVQ-P9P02W from Panasonic Electronic Components qualifies as a direct electrical substitute for the obsolete LS8J6M-T. Both parts maintain identical SPST-NO circuit topology and Off-Mom switch function with 0.02A contact rating. The EVQ-P9P02W provides higher voltage rating (15VDC vs 12VDC), ensuring compatibility in applications where the original 12VDC specification is used. The EVQ-P9P02W is currently Active in product status, eliminating supply chain constraints associated with obsolete components.

Mechanical substitution requires design verification. The outline dimensions differ (EVQ-P9P02W: 4.70mm x 3.50mm vs LS8J6M-T: 4.90mm x 3.20mm), and the actuator geometry differs (rectangular vs oval button). PCB footprint modification may be required. The EVQ-P9P02W switch travel is 0.25mm (vs 0.20mm), and operating force is 500gf (vs 530gf), representing minor variations within typical tactile switch tolerances. The EVQ-P9P02W demonstrates superior mechanical life (200,000 cycles vs 100,000 cycles) and meets ROHS3 compliance.

Termination style differs: LS8J6M-T uses SMD (SMT) Tab while EVQ-P9P02W uses J Lead. This difference requires soldering process evaluation and reflow profile adjustment.

Frequently Asked Questions (FAQ)

Q: Can the EVQ-P9P02W directly replace the LS8J6M-T without design changes?

A: Electrical substitution is direct; mechanical substitution requires PCB footprint layout verification. Outline dimension differences and termination style changes necessitate design review and potential PCB modification before implementation.

Q: What is the voltage compatibility between these parts?

A: The LS8J6M-T operates at 12VDC maximum. The EVQ-P9P02W is rated for 15VDC, providing compatibility margin. Both parts function identically in 12VDC applications.

Q: Are there differences in switch actuation feel or response?

A: Operating force differs marginally (500gf vs 530gf), and switch travel is slightly greater in the EVQ-P9P02W (0.25mm vs 0.20mm). These variations fall within standard tactile switch parameter ranges and do not affect functional switching performance in typical applications.

Q: How do the termination styles impact PCB assembly?

A: LS8J6M-T uses SMD (SMT) Tab termination; EVQ-P9P02W uses J Lead termination. J Lead termination requires different solder land geometry and reflow profiling. Assembly process and equipment compatibility must be confirmed before production transition.

Q: Is the EVQ-P9P02W suitable for high-cycle applications?

A: Yes. The EVQ-P9P02W demonstrates 200,000 mechanical cycle life, exceeding the LS8J6M-T specification of 100,000 cycles. This makes it suitable for high-cycle or critical switching applications.

Q: What compliance certifications apply to both parts?

A: Both parts are RoHS compliant (LS8J6M-T: RoHS Compliant; EVQ-P9P02W: ROHS3 Compliant) and REACH Unaffected. Both carry MSL Rating 1 (Unlimited moisture sensitivity), indicating unrestricted storage and handling.