LS71C2D-T Equivalent & Substitute Parts

Part Overview

The LS71C2D-T is a tactile switch manufactured by Citizen, classified as SPST-NO (Single Pole Single Throw - Normally Open) with off-momentary switch function. This surface mount component is rated for 0.02A at 12VDC and features a 0.55mm actuator height with 0.15mm switch travel. The LS71C2D-T is designated as obsolete product status, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and repair applications.

Substiute Parts

LS71C2D-T

CitizenIn Stock: 858LS71C2D-T Datasheet

Current PartRFQ

LS71C2D1

CitizenIn Stock: 849LS71C2D1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LS71C2D-T is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom
• Contact rating: 0.02A @ 12VDC

Mechanical Compatibility:

• Mounting type: Surface Mount (SMD)
• Actuator orientation: Top Actuated
• Actuator height: 0.55mm
• Outline dimensions: 3.00mm x 2.60mm
• Switch travel: 0.15mm
• Operating force: 160gf
• Termination style: SMD (SMT) Tab

Environmental & Regulatory:

• Moisture Sensitivity Level: MSL 1 (Unlimited)
• Mechanical life: 100,000 Cycles

The LS71C2D1 substitute part maintains identical electrical, mechanical, and environmental specifications while offering active product status and RoHS compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LS71C2D1 is a direct functional equivalent to the LS71C2D-T with the following engineering considerations:

Product Status Advantage: The LS71C2D1 maintains active product status, ensuring continued availability and supply chain support. The LS71C2D-T is obsolete and subject to discontinuation without alternative sourcing.

Regulatory Compliance: The LS71C2D1 carries RoHS Compliant certification, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution. Both parts share identical ECCN (EAR99) and HTSUS (8536.50.9031) classifications.

Electrical and Mechanical Equivalence: All critical parameters—circuit configuration, contact rating, mounting type, actuator specifications, and mechanical life—are identical between the two parts. Direct substitution is supported without design modification or PCB layout changes.

Moisture Sensitivity: Both parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity constraints during storage, handling, or assembly.

Frequently Asked Questions (FAQ)

Q: Can the LS71C2D1 be used as a direct replacement for the LS71C2D-T without PCB modifications?

A: Yes. The LS71C2D1 is mechanically and electrically identical to the LS71C2D-T. Both components share the same 3.00mm x 2.60mm outline, 0.55mm actuator height, SMD (SMT) Tab termination, and contact rating of 0.02A @ 12VDC. No PCB layout changes are required.

Q: What is the primary reason for substituting the LS71C2D-T?

A: The LS71C2D-T is designated as obsolete product status. The LS71C2D1 is an active product offering continued supply chain availability and support.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts are SPST-NO switches with identical contact ratings (0.02A @ 12VDC), switch function (Off-Mom), operating force (160gf), switch travel (0.15mm), and mechanical life (100,000 cycles).

Q: Does the LS71C2D1 meet current regulatory requirements?

A: Yes. The LS71C2D1 is RoHS Compliant. Both parts share identical ECCN (EAR99) and HTSUS (8536.50.9031) classifications.

Q: What is the moisture sensitivity level for the LS71C2D1?

A: The LS71C2D1 is classified as MSL 1 (Unlimited), indicating no moisture sensitivity constraints during storage, handling, or assembly operations.

Q: Are both parts from the same manufacturer?

A: Yes. Both the LS71C2D-T and LS71C2D1 are manufactured by Citizen and belong to the LS71 series.

Q: What is the mechanical life expectancy for the LS71C2D1?

A: The LS71C2D1 is rated for 100,000 mechanical cycles, identical to the LS71C2D-T.