MSPM101CS104 Equivalent & Substitute Parts

Part Overview

The MSPM101CS104 is a pushbutton switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a Standard Panel Mount SPST-NO (Single Pole Single Throw - Normally Open) momentary switch. This component is rated for 100mA DC at 50V with an audible click feature and a circular 6.35mm panel cutout. The product is currently obsolete, making identification of equivalent substitute components necessary for ongoing maintenance, repair, and legacy system support applications.

Substiute Parts

MSPM101CS104

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1107MSPM101CS104 Datasheet

Current PartRFQ

KM1101RR05Q

C&KIn Stock: 1744KM1101RR05Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSPM101CS104 is based on the following critical parameters that must align across components:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST-NO (Single Pole Single Throw - Normally Open)
• Switch function: Off-Mom (Momentary operation)
• Mounting type: Panel Mount, Rear
• Actuator type: Plunger for Cap
• Panel cutout dimensions: Circular 6.35mm diameter
• Termination interface compatibility with circuit board or harness

Electrical Performance Parameters:

• Current rating must equal or exceed 100mA
• Voltage rating (DC) must equal or exceed 50V
• Electrical life cycle rating

The substitute part KM1101RR05Q from C&K meets the core functional and mechanical requirements for SPST-NO momentary panel-mount operation with identical panel cutout dimensions. However, differences in termination style, current/voltage ratings, and electrical life cycles must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

For MSPM101CS104 Replacement:

The KM1101RR05Q from C&K is functionally equivalent for SPST-NO momentary panel-mount pushbutton applications with identical mechanical interface (6.35mm circular panel cutout). The substitute part is currently in active production status, ensuring long-term availability compared to the obsolete MSPM101CS104.

Electrical Performance Considerations:

The KM1101RR05Q exceeds the electrical specifications of the original part, with current rating of 250mA (versus 100mA) and voltage rating of 125V DC (versus 50V DC). This provides enhanced electrical margin for the application.

Compliance and Certifications:

The KM1101RR05Q carries ROHS3 compliance and REACH Unaffected status, meeting modern regulatory requirements. The original MSPM101CS104 compliance status is not specified in available documentation.

Termination Interface Difference:

The primary design consideration is the termination style difference: the original part uses Solder Lug termination, while the substitute uses Quick Connect 0.110" (2.8mm) termination. Circuit board or harness modifications may be required to accommodate this interface change.

Electrical Life Cycle:

The original MSPM101CS104 specifies 50,000 electrical life cycles, while the KM1101RR05Q specifies 10,000 cycles. Applications requiring extended cycle life should account for this difference.

Frequently Asked Questions (FAQ)

Q: Can the KM1101RR05Q directly replace the MSPM101CS104 without circuit modifications?

A: The KM1101RR05Q is functionally equivalent for SPST-NO momentary operation and shares identical panel cutout dimensions. However, the termination style differs: the original uses Solder Lug while the substitute uses Quick Connect 0.110" (2.8mm). Circuit board or harness modifications are required to accommodate the different termination interface.

Q: Are the electrical ratings of the KM1101RR05Q compatible with applications designed for the MSPM101CS104?

A: Yes. The KM1101RR05Q exceeds the electrical specifications of the original part. It is rated for 250mA at 125V DC, compared to the original 100mA at 50V DC. This provides additional electrical margin and is suitable for applications originally designed for the lower-rated MSPM101CS104.

Q: What is the impact of the different electrical life cycle ratings?

A: The MSPM101CS104 specifies 50,000 electrical cycles, while the KM1101RR05Q specifies 10,000 cycles. For applications with high cycle count requirements, the reduced cycle life of the substitute should be evaluated against actual application duty cycles.

Q: Is the KM1101RR05Q available in the same packaging as the MSPM101CS104?

A: The KM1101RR05Q is supplied in Bulk packaging. Both parts share identical mechanical dimensions for panel mounting (6.35mm circular cutout) and are configured as Standard Panel Mount, Rear actuator switches.

Q: What regulatory compliance differences exist between these parts?

A: The KM1101RR05Q is ROHS3 Compliant and REACH Unaffected. The original MSPM101CS104 compliance status is not specified in available documentation. For applications subject to modern regulatory requirements, the KM1101RR05Q meets current standards.

Q: Can the KM1101RR05Q operate across the same temperature range as the original part?

A: The KM1101RR05Q operates across a wider temperature range (-30°C ~ 85°C) compared to the MSPM101CS104 (-10°C ~ 80°C). This provides additional thermal margin for the application.