LS38J2-T Tactile Switch: Equivalent & Substitute Parts

Part Overview

The LS38J2-T is a tactile switch manufactured by Citizen, classified as SPST-NO (Single Pole Single Throw - Normally Open) with top actuated surface mount design. This component is rated for 0.02A at 12VDC and features a 2.50mm actuator height with 0.15mm switch travel. The LS38J2-T is currently listed as obsolete, necessitating identification of equivalent substitute components to maintain design continuity and ensure procurement availability for new production runs and field replacements.

Substiute Parts

LS38J2-T

CitizenIn Stock: 2126LS38J2-T Datasheet

Current PartRFQ

LS38J2F

CitizenIn Stock: 700LS38J2F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LS38J2-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: SPST-NO
• Contact rating: 0.02A @ 12VDC
• Actuator type: Round Button
• Mounting type: Surface Mount (SMD)
• Actuator height: 2.50mm
• Actuator orientation: Top Actuated
• Outline dimensions: 3.30mm x 3.10mm
• Switch travel: 0.15mm
• Operating force: 180gf
• Mechanical life: 100,000 Cycles
• Termination style: SMD (SMT) Tab
• RoHS compliance: Required
• MSL rating: 1 (Unlimited)

The LS38J2F qualifies as a direct substitute based on complete alignment with all mandatory parameters. The LS38J2F maintains identical electrical and mechanical specifications while offering enhanced ingress protection (IP67) and active product status.

Parameter Comparison

Engineering Selection Recommendations

LS38J2F as Primary Substitute:

The LS38J2F is the direct equivalent for LS38J2-T applications. Both components share identical electrical performance (0.02A @ 12VDC), mechanical specifications (2.50mm height, 0.15mm travel, 180gf operating force), and physical footprint (3.30mm x 3.10mm). The LS38J2F is currently in active production status, ensuring long-term availability and supply chain stability.

The LS38J2F provides additional value through IP67 ingress protection rating, offering enhanced environmental sealing compared to the LS38J2-T. This enhanced protection does not compromise PCB footprint compatibility or electrical performance.

Both components maintain RoHS compliance and MSL 1 rating, supporting lead-free assembly processes and unlimited shelf life storage conditions. ECCN classification (EAR99) and HTSUS code (8536.50.9031) remain consistent, simplifying regulatory documentation and procurement procedures.

Frequently Asked Questions (FAQ)

Q: Can LS38J2F be used as a direct replacement for LS38J2-T in existing designs?

A: Yes. The LS38J2F maintains identical PCB footprint, electrical ratings, and mechanical actuation characteristics. No design modifications are required for component substitution.

Q: What is the significance of the IP67 rating on LS38J2F?

A: IP67 classification indicates dust-tight and waterproof performance. This enhanced ingress protection does not affect electrical or mechanical compatibility with LS38J2-T applications. The rating provides additional environmental robustness for applications exposed to moisture or particulate contamination.

Q: Are there packaging differences between LS38J2-T and LS38J2F?

A: The LS38J2-T is specified as Cut Tape (CT) & Digi-Reel® packaging. Packaging information for LS38J2F is not provided in the available data. Confirm packaging requirements with your procurement department prior to ordering.

Q: Do both parts meet RoHS and REACH compliance requirements?

A: Yes. Both LS38J2-T and LS38J2F are RoHS Compliant and REACH Unaffected, supporting lead-free manufacturing processes and regulatory compliance across EU and international markets.

Q: What is the mechanical life expectancy for both components?

A: Both LS38J2-T and LS38J2F are rated for 100,000 mechanical cycles, providing equivalent operational durability for momentary switch applications.

Q: Are there any differences in moisture sensitivity between the two parts?

A: No. Both components carry MSL 1 (Unlimited) rating, indicating unlimited shelf life storage without moisture bake-out requirements prior to assembly.