D6C90 LFS Equivalent & Substitute Parts

Part Overview

The D6C90 LFS is a pushbutton switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a keyswitch design. This component is rated for 0.1A at 32V DC and features tactile feedback with a square black button actuator. The part is currently listed as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

D6C90 LFS

C&KIn Stock: 854D6C90 LFS Datasheet

Current PartRFQ

D6C90 F1 LFS

C&KIn Stock: 4939D6C90 F1 LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The D6C90 F1 LFS qualifies as a direct substitute for the D6C90 LFS based on the following critical parameters:

• Electrical Specifications: Identical circuit configuration (SPST-NO), current rating (100mA DC), and voltage rating (32V DC)
• Mechanical Compatibility: Matching mounting type (Through Hole), actuator type (Square Button), and termination style (PC Pin)
• Environmental Performance: Identical operating temperature range (-20°C to 85°C) and electrical life rating (250,000 cycles)
• Functional Characteristics: Same switch function (Off-Mom momentary operation) and tactile feedback feature
• Compliance & Certification: Both parts maintain RoHS compliance and MSL Level 1 rating

The primary distinction is product status: D6C90 LFS is obsolete, while D6C90 F1 LFS is active with significantly higher inventory availability (4929 pcs vs. 792 pcs).

Parameter Comparison

Engineering Selection Recommendations

The D6C90 F1 LFS is the appropriate selection for applications currently specified with D6C90 LFS. This substitute maintains full electrical and mechanical compatibility across all critical parameters. The D6C90 F1 LFS offers the additional advantage of active product status with enhanced RoHS3 compliance certification, ensuring long-term supply chain stability and regulatory alignment. The transition from bulk to tray packaging does not affect functional performance and may provide improved handling and inventory management benefits.

Frequently Asked Questions (FAQ)

Q: Are D6C90 LFS and D6C90 F1 LFS electrically interchangeable?

A: Yes. Both parts share identical electrical specifications: SPST-NO circuit, 100mA DC current rating, and 32V DC voltage rating. They operate within the same temperature range and deliver equivalent electrical life performance.

Q: What is the difference between these two part numbers?

A: The primary differences are product status (obsolete vs. active) and packaging format (bulk vs. tray). All functional and electrical parameters are identical.

Q: Can I use D6C90 F1 LFS as a direct replacement on existing PCBs designed for D6C90 LFS?

A: Yes. The D6C90 F1 LFS maintains identical mounting type (Through Hole), actuator type (Square Button), and PC Pin termination, ensuring direct PCB compatibility without design modification.

Q: Does the packaging change from bulk to tray affect performance?

A: No. Packaging format does not affect electrical performance, mechanical operation, or environmental ratings. The change is logistical only.

Q: Are both parts RoHS compliant?

A: Yes. D6C90 LFS is RoHS Compliant, and D6C90 F1 LFS is ROHS3 Compliant, both meeting regulatory requirements for restricted substance elimination.