FSMCD Tactile Switch SPST-NO Equivalent & Substitute Parts

Part Overview

The FSMCD is a tactile switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole single-throw normally-open (SPST-NO) device with off-momentary switch function. This component is rated for 0.05A at 24VDC and features top-actuated through-hole mounting with a 6.00mm x 6.00mm outline and 7.50mm actuator height. The FSMCD is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to support ongoing design requirements, maintenance operations, and production continuity where original components are no longer available through standard distribution channels.

Substiute Parts

FSMCD

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1052FSMCD Datasheet

Current PartRFQ

1825967-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 423811825967-1 Datasheet

DirectRFQ

TL1105SPF160Q

E-SwitchIn Stock: 1427TL1105SPF160Q Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSMCD tactile switch are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are circuit configuration (SPST-NO), switch function (Off-Mom), contact rating voltage and current capacity, mounting type (through hole), actuator orientation (top actuated), outline dimensions (6.00mm x 6.00mm), actuator height (7.50mm), termination style (PC pin), switch travel (0.25mm), and mechanical life rating (100,000 cycles).

Substitute parts must maintain identical or superior electrical performance within the specified voltage and current parameters. Mechanical compatibility requires matching outline dimensions, actuator height, mounting type, and termination style to ensure direct PCB compatibility without redesign. Operating force and actuator material variations are permitted where the substitute part maintains functional equivalence within the application envelope.

The following parts satisfy these substitution criteria:

1825967-1 (TE Connectivity ALCOSWITCH Switches): Active product status, identical circuit configuration, voltage/current rating, mounting type, outline, actuator height, termination style, and mechanical life. Extended operating temperature range (-35°C ~ 85°C) and RoHS3 compliance provide enhanced environmental performance.

TL1105SPF160Q (E-Switch): Active product status, identical circuit configuration, mounting type, outline, actuator height, termination style, and mechanical life. Contact rating of 0.05A @ 12VDC represents reduced voltage specification; operating force of 160gf differs from 100gf baseline. RoHS3 compliance and unlimited moisture sensitivity level provided.

Parameter Comparison

Engineering Selection Recommendations

1825967-1 is the primary substitute for FSMCD applications. This part maintains identical electrical specifications (0.05A @ 24VDC), mechanical configuration, and operating force (100gf). The part is manufactured by the same supplier (TE Connectivity ALCOSWITCH Switches) and carries active product status with RoHS3 compliance. The extended operating temperature range (-35°C ~ 85°C) provides superior environmental performance compared to the original FSMCD specification (-20°C ~ 70°C). This substitute is suitable for direct replacement in existing designs without circuit or PCB modifications.

TL1105SPF160Q is a secondary substitute option for applications where voltage specification permits. This E-Switch component maintains mechanical compatibility and circuit configuration but operates at reduced voltage rating (0.05A @ 12VDC) and increased operating force (160gf). This substitute is applicable only in 12VDC circuit environments and where the higher actuator force (160gf versus 100gf) is compatible with user interface requirements. The part carries active product status and RoHS3 compliance.

Selection between substitute parts depends on circuit voltage requirements. For 24VDC applications, 1825967-1 is the appropriate selection. For 12VDC applications where increased actuator force is acceptable, TL1105SPF160Q provides an alternative. Both substitutes maintain through-hole mounting compatibility and identical outline dimensions with the original FSMCD component.

Frequently Asked Questions (FAQ)

Q: Can 1825967-1 be used as a direct replacement for FSMCD in all applications?

A: Yes. The 1825967-1 maintains identical electrical rating (0.05A @ 24VDC), circuit configuration (SPST-NO), mechanical dimensions (6.00mm x 6.00mm outline, 7.50mm actuator height), mounting type (through hole), and operating force (100gf). The part is mechanically and electrically compatible without PCB redesign or circuit modification.

Q: What is the key difference between 1825967-1 and TL1105SPF160Q?

A: The primary difference is contact rating voltage. The 1825967-1 is rated for 0.05A @ 24VDC, while TL1105SPF160Q is rated for 0.05A @ 12VDC. Additionally, TL1105SPF160Q has an operating force of 160gf compared to 100gf for both FSMCD and 1825967-1. Both parts share identical mechanical dimensions and circuit configuration.

Q: Is TL1105SPF160Q suitable for 24VDC applications?

A: No. The TL1105SPF160Q contact rating is specified at 12VDC. Use of this component in 24VDC circuits exceeds the rated voltage specification and is not supported.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both 1825967-1 and TL1105SPF160Q carry RoHS3 compliance certification. The original FSMCD does not specify RoHS status.

Q: What is the packaging format for substitute parts?

A: Both 1825967-1 and TL1105SPF160Q are supplied in bulk packaging format.

Q: Do the substitute parts maintain the same mechanical life rating?

A: Yes. All three parts (FSMCD, 1825967-1, and TL1105SPF160Q) are rated for 100,000 mechanical cycles.

Q: Can FSMCD be used interchangeably with 1825967-1 in new designs?

A: The 1825967-1 is the appropriate selection for new designs. The FSMCD is classified as obsolete product status and is not recommended for new development. The 1825967-1 provides active product status, extended operating temperature range, and RoHS3 compliance.

Q: What is the operating force difference between FSMCD and TL1105SPF160Q?

A: The FSMCD has an operating force of 100gf, while TL1105SPF160Q requires 160gf. This 60gf increase affects actuator feel and may impact user interface characteristics in applications where tactile feedback is critical.