MSPM101C104 Equivalent & Substitute Parts

Part Overview

The MSPM101C104 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 and features a red round button actuator with solder lug termination. The product is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing system maintenance, repair, and redesign applications where continued sourcing of the original component is not feasible.

Substiute Parts

MSPM101C104

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1008MSPM101C104 Datasheet

Current PartRFQ

KM1101RR05Q

C&KIn Stock: 1744KM1101RR05Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSPM101C104 is determined by strict alignment of the following core parameters:

Mandatory Compatibility Parameters:

• Circuit Configuration: SPST-NO
• Switch Function: Off-Mom (Momentary)
• Mounting Type: Panel Mount, Rear
• Panel Cutout Dimensions: Circular - 6.35mm Dia
• Actuator Type: Round button or plunger-based design compatible with standard panel mounting

Electrical Performance Parameters:

• Current Rating: Substitute must equal or exceed 100mA
• Voltage Rating (DC): Substitute must equal or exceed 50V DC
• Operating Temperature Range: Substitute must encompass or exceed -10°C ~ 80°C

Termination Compatibility:

• Solder Lug termination in the original part requires substitutes with equivalent or adaptable termination methods for circuit integration

The substitute part KM1101RR05Q (C&K manufacturer) meets these core substitution criteria through equivalent circuit topology, matching panel mount configuration, compatible panel cutout dimensions, and electrical ratings that exceed the original specification.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MSPM101C104 is classified as obsolete. The KM1101RR05Q substitute is classified as active, ensuring continued availability and supply chain reliability for future procurement requirements.

Compliance and Certification: The original MSPM101C104 is RoHS non-compliant and REACH affected. The substitute KM1101RR05Q is ROHS3 compliant and REACH unaffected, providing superior environmental and regulatory compliance for applications subject to modern electronic equipment directives.

Electrical Performance: The KM1101RR05Q provides electrical ratings that exceed the original specification (250mA vs. 100mA current rating; 125V vs. 50V DC voltage rating), ensuring adequate performance margin in the target application. The substitute operates across an extended temperature range (-30°C ~ 85°C vs. -10°C ~ 80°C), supporting broader environmental deployment scenarios.

Mechanical and Functional Compatibility: Both components share identical panel mount configuration and panel cutout dimensions (6.35mm circular), enabling direct mechanical substitution in existing panel assemblies. Both maintain SPST-NO circuit topology and momentary switch function.

Termination Consideration: The original component uses solder lug termination while the substitute employs quick connect 0.110" (2.8mm) termination. Circuit integration requires appropriate connector adaptation or rework to accommodate the different termination interface.

Electrical Life Trade-off: The original MSPM101C104 specifies 50,000 electrical cycles while the KM1101RR05Q specifies 10,000 cycles. Applications requiring extended cycle life should evaluate this parameter against actual duty cycle requirements.

Frequently Asked Questions (FAQ)

Q: Can the KM1101RR05Q directly replace the MSPM101C104 without circuit modification?

A: Mechanical panel mounting is direct due to identical 6.35mm circular cutout dimensions. Electrical circuit integration requires termination adaptation because the original uses solder lugs while the substitute uses quick connect 0.110" (2.8mm) terminals. Circuit redesign or connector interface modification is necessary.

Q: What is the primary reason for substitution?

A: The MSPM101C104 is obsolete. The KM1101RR05Q is an active product with confirmed ongoing availability, ensuring supply chain continuity for maintenance and redesign applications.

Q: Are the electrical ratings of the substitute adequate?

A: Yes. The KM1101RR05Q current rating (250mA AC/DC) exceeds the original requirement (100mA DC), and the voltage rating (125V DC) exceeds the original specification (50V DC). The substitute operates within the original application's electrical envelope with performance margin.

Q: Does the substitute meet modern compliance requirements?

A: Yes. The KM1101RR05Q is ROHS3 compliant and REACH unaffected, whereas the original MSPM101C104 is RoHS non-compliant and REACH affected. The substitute satisfies current environmental and regulatory standards for electronic equipment.

Q: What is the difference in electrical life between these components?

A: The original MSPM101C104 specifies 50,000 electrical cycles while the KM1101RR05Q specifies 10,000 cycles. Applications with high-frequency switching duty cycles should evaluate whether the reduced cycle rating of the substitute aligns with actual operational requirements.

Q: Are the operating temperature ranges compatible?

A: The substitute KM1101RR05Q operates across -30°C ~ 85°C, which encompasses and exceeds the original range of -10°C ~ 80°C. The substitute supports broader environmental deployment without thermal limitation.

Q: What packaging is available for the substitute?

A: The KM1101RR05Q is supplied in bulk packaging with 1,733 pieces available in new original stock condition.