D6C40 LFS Equivalent & Substitute Parts

Part Overview

The D6C40 LFS is a pushbutton switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a keyswitch design for through-hole mounting. This component is rated for 0.1A at 32V DC and features tactile feedback with a red square button actuator. The D6C40 LFS is currently listed as obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this legacy component is specified.

Substiute Parts

D6C40 LFS

C&KIn Stock: 1006D6C40 LFS Datasheet

Current PartRFQ

D6C40 F1 LFS

C&KIn Stock: 2542D6C40 F1 LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The D6C40 LFS has one direct substitute within the C&K D6 series: the D6C40 F1 LFS. Substitution eligibility is determined by strict equivalence across the following critical parameters:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (momentary operation)
• Current rating: 100mA DC
• Voltage rating: 32V DC
• Mounting type: Through Hole
• Keyswitch type with square red button actuator
• PC Pin termination
• Operating temperature range: -20°C to 85°C
• Electrical life: 250,000 cycles
• Tactile feedback feature
• RoHS and REACH compliance status

The D6C40 F1 LFS maintains identical electrical and mechanical specifications to the D6C40 LFS, with the primary distinction being active product status and packaging format (Tray versus standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The D6C40 F1 LFS is the direct equivalent substitute for the D6C40 LFS. Selection of the D6C40 F1 LFS is supported by the following factors:

• Identical electrical specifications: 100mA DC at 32V with SPST-NO configuration
• Identical mechanical specifications: Through-hole mounting, keyswitch type, square red button actuator, PC Pin termination
• Identical operational characteristics: 250,000 cycle electrical life, -20°C to 85°C operating range, tactile feedback
• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance represents current regulatory alignment
• REACH Unaffected status maintains environmental compliance
• Tray packaging format supports volume production requirements

The D6C40 F1 LFS provides a direct functional replacement with no design modifications required at the circuit or mechanical assembly level.

Frequently Asked Questions (FAQ)

Q: Can the D6C40 F1 LFS be used as a direct replacement for the D6C40 LFS without circuit modifications?

A: Yes. The D6C40 F1 LFS is electrically and mechanically identical to the D6C40 LFS. No circuit modifications, PCB layout changes, or mechanical assembly adjustments are required. The component footprint, pin configuration, and electrical performance are equivalent.

Q: What is the difference between the D6C40 LFS and D6C40 F1 LFS?

A: The primary differences are product status and packaging format. The D6C40 LFS is obsolete with standard packaging, while the D6C40 F1 LFS is active with Tray packaging. All electrical and mechanical specifications are identical.

Q: Why is the D6C40 LFS listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support for this specific part number variant. The D6C40 F1 LFS remains in active production as the current equivalent.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS compliant and REACH Unaffected. The D6C40 F1 LFS carries ROHS3 certification, representing alignment with current regulatory standards, while the D6C40 LFS carries RoHS Compliant status.

Q: What packaging format should I specify for new production orders?

A: Specify the D6C40 F1 LFS with Tray packaging for new production runs. This ensures component availability, active manufacturer support, and compliance with current regulatory requirements.

Q: Are the electrical ratings identical between these parts?

A: Yes. Both parts are rated for 100mA DC at 32V maximum, with SPST-NO circuit configuration and 250,000 cycle electrical life.

Q: Can I mix D6C40 LFS and D6C40 F1 LFS components in the same production batch?

A: Yes. Since the parts are electrically and mechanically equivalent, they can be used interchangeably in the same assembly without functional impact. However, for supply chain consistency, using a single part number is recommended.