MSP103B Equivalent & Substitute Parts

Part Overview

The MSP103B is a pushbutton switch manufactured by TE Connectivity ALCOSWITCH Switches, classified as a SPST-NC (Single Pole Single Throw - Normally Closed) momentary contact switch. This component is rated for 3A at 125V AC and features a panel-mount rear configuration with a circular 6.35mm diameter cutout. The MSP103B is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement requirements.

Substiute Parts

MSP103B

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1096MSP103B Datasheet

Current PartRFQ

MSP103B04

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1269MSP103B04 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSP103B is based on electrical and mechanical parameter equivalence within the MSP3 series. The substitute part MSP103B04 maintains identical functional specifications across all critical parameters: circuit configuration (SPST-NC), current rating (3A AC), voltage rating (125V AC), mounting configuration (Panel Mount, Rear), panel cutout dimensions (Circular - 6.35mm Dia), actuator type (Plunger for Cap), termination style (Solder Lug), operating temperature range (-20°C ~ 80°C), and electrical life (5,000 Cycles).

The primary distinction between these parts is product status and packaging. The MSP103B is obsolete, while MSP103B04 maintains active product status. The MSP103B04 is supplied in bulk packaging, whereas the original part number does not specify packaging designation.

Parameter Comparison

Engineering Selection Recommendations

The MSP103B04 is the direct functional equivalent for the obsolete MSP103B. Both components are manufactured by TE Connectivity ALCOSWITCH Switches within the MSP3 series and share identical electrical and mechanical specifications. The MSP103B04 is the recommended selection for new designs and replacement applications due to its active product status, ensuring continued availability and manufacturing support.

Both parts maintain RoHS non-compliant status. The MSP103B04 carries REACH Affected designation, whereas the MSP103B is REACH Unaffected. This distinction should be evaluated within the context of end-application regulatory requirements and supply chain compliance protocols.

The MSP103B04 is supplied in bulk packaging, which may require evaluation against specific procurement and inventory management requirements for individual applications.

Frequently Asked Questions (FAQ)

Q: Can MSP103B04 be used as a direct replacement for MSP103B?

A: Yes. The MSP103B04 maintains identical electrical ratings (3A at 125V AC), circuit configuration (SPST-NC), mechanical mounting (Panel Mount, Rear with 6.35mm circular cutout), actuator type (Plunger for Cap), termination style (Solder Lug), operating temperature range (-20°C ~ 80°C), and electrical life (5,000 Cycles). The primary difference is product status: MSP103B04 is active while MSP103B is obsolete.

Q: What is the significance of the packaging difference?

A: The MSP103B04 is supplied in bulk packaging. Packaging designation affects procurement quantities, storage requirements, and handling procedures. Verify bulk packaging specifications align with your supply chain and inventory management protocols.

Q: Are there compliance differences between these parts?

A: Both parts are RoHS non-compliant and carry identical ECCN (EAR99) and HTSUS (8536.50.9031) classifications. The MSP103B04 is REACH Affected while the MSP103B is REACH Unaffected. Evaluate REACH compliance requirements based on your end-application and geographic distribution.

Q: What electrical life expectancy should be anticipated?

A: Both parts are rated for 5,000 electrical cycles. This specification defines the expected operational life under normal switching conditions within the specified voltage and current parameters.

Q: Are there temperature operating constraints?

A: Both parts operate within the range of -20°C to 80°C. Applications requiring operation outside this range require alternative component selection.

Q: What termination method is used for circuit integration?

A: Both parts utilize solder lug termination, enabling direct soldering to printed circuit boards or wiring harnesses. Ensure soldering procedures comply with IPC standards appropriate for the application.