MJTP1122 Equivalent & Substitute Parts

Part Overview

The MJTP1122 is an active SPST-NO tactile switch manufactured by APEM Inc., rated for 0.05A at 12VDC with surface mount gull wing termination. This component features tactile feedback, a 3.10mm actuator height, and is specified for operating temperatures from -20°C to 70°C. The part is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating. Substitute parts are necessary when addressing voltage rating requirements, packaging format constraints, or extended temperature operating ranges in system designs.

Substiute Parts

MJTP1122

APEM Inc.In Stock: 1119MJTP1122 Datasheet

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FSM1LP

TE Connectivity ALCOSWITCH SwitchesIn Stock: 16335FSM1LP Datasheet

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FSM1LPA

TE Connectivity ALCOSWITCH SwitchesIn Stock: 18393FSM1LPA Datasheet

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FSM1LPATR

TE Connectivity ALCOSWITCH SwitchesIn Stock: 19423FSM1LPATR Datasheet

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FSM1LPTR

TE Connectivity ALCOSWITCH SwitchesIn Stock: 4983FSM1LPTR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MJTP1122 is determined by the following critical parameters: circuit configuration (SPST-NO), switch function (Off-Mom), mounting type (Surface Mount), actuator orientation (Top Actuated), termination style (Gull Wing), switch travel (0.25mm), and mechanical life (100,000 cycles). All substitute parts maintain these core electrical and mechanical characteristics.

The FSM1LP series from TE Connectivity ALCOSWITCH Switches meets these substitution criteria across four packaging variants: FSM1LP (Bulk), FSM1LPA (Bulk), FSM1LPATR (Cut Tape), and FSM1LPTR (Tape & Reel). These parts share identical circuit topology, actuator height (3.10mm), outline dimensions (6.00mm x 6.00mm), switch travel, and mechanical life specifications.

Primary differences among substitutes relate to voltage rating (24VDC versus 12VDC), operating force (160gf or 260gf), actuator material composition, packaging format, and operating temperature range extension (-35°C to 85°C). These variations allow selection based on specific application requirements while maintaining functional compatibility at the circuit level.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, qualifying them for equivalent circuit-level substitution. Selection among FSM1LP series variants depends on application-specific requirements:

FSM1LP and FSM1LPTR are suitable for applications requiring 160gf operating force with polyphthalamide (PPA) actuator material. FSM1LP provides bulk packaging for prototype and low-volume applications, while FSM1LPTR offers tape and reel packaging for automated assembly processes.

FSM1LPA and FSM1LPATR feature increased 260gf operating force with polyphenylene sulfide (PPS) actuator material, providing enhanced durability for high-cycle applications. FSM1LPA is available in bulk packaging, and FSM1LPATR in cut tape format.

The 24VDC voltage rating of all FSM1LP series parts accommodates higher voltage system designs compared to the MJTP1122's 12VDC specification. Extended operating temperature range (-35°C to 85°C) supports applications requiring broader thermal performance.

Frequently Asked Questions (FAQ)

Q: Can FSM1LP series parts directly replace MJTP1122 in 12VDC circuits?

A: FSM1LP series parts are rated for 24VDC operation. While the 0.05A contact rating remains constant, the higher voltage specification does not prevent functional operation in 12VDC applications. Circuit design must account for the different voltage rating during component selection validation.

Q: What is the primary difference between FSM1LP and FSM1LPA?

A: Operating force and actuator material differ. FSM1LP features 160gf operating force with PPA actuator material, while FSM1LPA provides 260gf operating force with PPS actuator material. Both maintain identical electrical specifications and mechanical life ratings.

Q: Are packaging format differences significant for substitution?

A: Packaging format affects procurement and assembly processes but does not impact electrical or mechanical performance. FSM1LP (Bulk) suits manual assembly and prototyping. FSM1LPATR (Cut Tape) and FSM1LPTR (Tape & Reel) support automated pick-and-place assembly. Select based on manufacturing process requirements.

Q: Does the outline dimension difference (6.20mm versus 6.00mm) affect PCB layout compatibility?

A: Outline dimensions differ slightly between MJTP1122 (6.20mm x 6.20mm) and FSM1LP series (6.00mm x 6.00mm). PCB footprint design must accommodate the specific part selected. The smaller FSM1LP footprint may provide layout advantages in space-constrained designs.

Q: What compliance certifications apply to all substitute parts?

A: All parts listed maintain ROHS3 compliance and EAR99 ECCN classification. REACH status varies: MJTP1122 and FSM1LPATR are REACH Unaffected, while FSM1LP is REACH Unaffected, FSM1LPA and FSM1LPTR show Vendor Undefined status. Verify REACH compliance requirements with component suppliers for specific applications.