MJTP1138E Tactile Switch SPST-NO Equivalent & Substitute Parts

Part Overview

The MJTP1138E is an active-status tactile switch manufactured by APEM Inc., configured as a SPST-NO (Single Pole Single Throw - Normally Open) momentary contact switch. This surface-mount component is rated for 0.05A at 12VDC with top actuation and gull wing termination. Substitute parts are identified to provide design flexibility when the primary part is unavailable or when alternative packaging, actuator heights, or operating force specifications better suit application requirements.

Key Parameters

Parameter	MJTP1138E
Manufacturer	APEM Inc.
Circuit Configuration	SPST-NO
Contact Rating	0.05A @ 12VDC
Mounting Type	Surface Mount
Actuator Orientation	Top Actuated
Actuator Height	7.30mm
Outline Dimensions	6.00mm x 6.00mm
Operating Force	160gf
Switch Travel	0.25mm
Mechanical Life	100,000 Cycles
Operating Temperature	-20°C ~ 70°C
RoHS Status	ROHS3 Compliant
Termination Style	Gull Wing

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following electrical and mechanical parameters:

Primary Substitution Criteria:

Circuit configuration: SPST-NO
Switch function: Off-Mom (momentary)
Mounting type: Surface Mount
Actuator orientation: Top Actuated
Termination style: Gull Wing
Contact rating compatibility: 0.05A @ 12VDC or higher voltage/current rating

Secondary Compatibility Factors:

Outline dimensions (tolerance for minor variations)
Actuator height (application-dependent; affects PCB clearance)
Operating force (application-dependent; affects tactile feedback)
Mechanical life rating (100,000 cycles minimum)
Operating temperature range (must encompass application requirements)
RoHS and regulatory compliance status

Substitute parts are grouped by manufacturer and packaging type. Parts with identical electrical specifications but different actuator heights or operating forces are listed separately to enable selection based on specific design constraints.

Parameter Comparison

Part Number	Manufacturer	Circuit	Contact Rating	Actuator Height (mm)	Outline (mm)	Operating Force (gf)	Mechanical Life	Operating Temp (°C)	Packaging	RoHS Status
MJTP1138E	APEM Inc.	SPST-NO	0.05A @ 12VDC	7.30	6.00 x 6.00	160	100,000	-20 ~ 70	Bulk	ROHS3
7914G-1-032E	Bourns Inc.	SPST-NO	0.1A @ 16VAC/DC	3.43	5.00 x 5.00	300	100,000	-55 ~ 125	Cut Tape & Digi-Reel	ROHS3
7914G-1-000	Bourns Inc.	SPST-NO	0.1A @ 16VAC/DC	4.19	5.00 x 5.00	300	100,000	-55 ~ 125	Tube	ROHS3
7914G-1-000E	Bourns Inc.	SPST-NO	0.1A @ 16VAC/DC	4.19	5.00 x 5.00	300	100,000	-55 ~ 125	Cut Tape & Digi-Reel	ROHS3
7914G-1-024E	Bourns Inc.	SPST-NO	0.1A @ 16VAC/DC	2.62	5.00 x 5.00	300	100,000	-55 ~ 125	Tape & Reel	ROHS3
FSM1JELGTR	TE Connectivity ALCOSWITCH	SPST-NO	0.05A @ 12VDC	2.00	6.20 x 6.20	160	1,000,000	-35 ~ 85	Tape & Reel	ROHS3
FSM2JELGLTR	TE Connectivity ALCOSWITCH	SPST-NO	0.05A @ 12VDC	2.50	6.20 x 6.20	100	1,000,000	-35 ~ 85	Tape & Reel	RoHS
FSM2JELGXLTR	TE Connectivity ALCOSWITCH	SPST-NO	0.05A @ 12VDC	2.50	6.20 x 6.20	50	1,000,000	-35 ~ 85	Tape & Reel	RoHS
TL3301FF160QG	E-Switch	SPST-NO	0.05A @ 12VDC	7.00	6.00 x 6.00	160	100,000	-20 ~ 70	Cut Tape & Digi-Reel	ROHS3

Engineering Selection Recommendations

Direct Electrical Equivalents (0.05A @ 12VDC, 160gf Operating Force):

FSM1JELGTR and TL3301FF160QG are electrically and functionally equivalent to MJTP1138E. Both maintain identical contact ratings, operating force, and switch travel specifications. FSM1JELGTR offers extended mechanical life (1,000,000 cycles versus 100,000 cycles) and is ROHS3 compliant. TL3301FF160QG maintains the same mechanical life rating and operating temperature range as the primary part. Both are available in tape and reel packaging suitable for automated assembly.

Higher Contact Rating Alternatives (Bourns 7914G Series):

The Bourns 7914G series (7914G-1-032E, 7914G-1-000, 7914G-1-000E, 7914G-1-024E) provides 0.1A @ 16VAC/DC contact rating, exceeding the MJTP1138E specification. These parts are ROHS3 compliant and rated for 100,000 mechanical cycles. Selection among these variants depends on actuator height requirements: 7914G-1-024E (2.62mm flush actuator), 7914G-1-032E (3.43mm standard actuator), or 7914G-1-000/7914G-1-000E (4.19mm standard actuator). Packaging options include tube, cut tape with digi-reel, and tape & reel formats.

Lower Operating Force Alternatives (TE Connectivity FSM2 Series):

FSM2JELGLTR (100gf) and FSM2JELGXLTR (50gf) provide reduced operating force compared to the MJTP1138E (160gf). Both maintain 0.05A @ 12VDC contact rating and offer 1,000,000 mechanical cycle life. These parts are suitable for applications requiring lighter tactile feedback. Operating temperature range is -35°C ~ 85°C, which encompasses the MJTP1138E range.

All substitute parts maintain SPST-NO circuit configuration, top actuation, gull wing termination, and surface-mount compatibility with the primary part.

Frequently Asked Questions (FAQ)

Q: Can I substitute a Bourns 7914G series part for the MJTP1138E in a 0.05A @ 12VDC circuit?

A: Yes. The Bourns 7914G series is rated for 0.1A @ 16VAC/DC, which exceeds the 0.05A @ 12VDC requirement. The higher contact rating provides margin for the specified application. All 7914G variants maintain SPST-NO configuration, top actuation, and gull wing termination. Verify actuator height compatibility with your PCB layout, as 7914G variants range from 2.62mm to 4.19mm.

Q: What is the difference between FSM1JELGTR and FSM2JELGLTR?

A: Both parts share identical electrical specifications (0.05A @ 12VDC) and mechanical life (1,000,000 cycles). FSM1JELGTR has 160gf operating force and 2.00mm actuator height. FSM2JELGLTR has 100gf operating force and 2.50mm actuator height. Selection depends on required tactile feedback and available PCB clearance.

Q: Are all substitute parts RoHS compliant?

A: All listed substitutes are RoHS compliant. MJTP1138E, 7914G series, FSM1JELGTR, and TL3301FF160QG are ROHS3 compliant. FSM2JELGLTR and FSM2JELGXLTR are RoHS compliant. Compliance status meets regulatory requirements for the specified applications.

Q: How do packaging options affect part selection?

A: Packaging type determines handling and assembly method. Bulk packaging (MJTP1138E) suits manual assembly or small-volume production. Tube packaging (7914G-1-000) is suitable for manual pick-and-place operations. Cut tape with digi-reel and tape & reel formats are optimized for automated assembly equipment. Select packaging based on production volume and assembly process capability.

Q: Can I use TL3301FF160QG as a direct replacement for MJTP1138E?

A: Yes. TL3301FF160QG matches the MJTP1138E in electrical rating (0.05A @ 12VDC), operating force (160gf), switch travel (0.25mm), mechanical life (100,000 cycles), and operating temperature range (-20°C ~ 70°C). Outline dimensions are identical (6.00mm x 6.00mm). Both are ROHS3 compliant with gull wing termination and top actuation. Packaging differs (cut tape & digi-reel versus bulk), which may affect procurement and assembly processes.

Q: What is the mechanical life difference between MJTP1138E and FSM1JELGTR?

A: MJTP1138E is rated for 100,000 mechanical cycles. FSM1JELGTR is rated for 1,000,000 mechanical cycles, providing tenfold extended life. Both maintain identical electrical specifications and operating force. FSM1JELGTR is suitable for applications requiring higher cycle durability.

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