MJTP1138B Equivalent & Substitute Parts

Part Overview

The MJTP1138B is an active SPST-NO tactile switch manufactured by APEM Inc., designed for surface mount applications with a 0.05A contact rating at 12VDC. This component is commonly used in control panels, user interface applications, and low-power switching circuits. Substitute parts may be required due to inventory constraints, lead time considerations, or specific application requirements such as extended operating temperature ranges or enhanced ingress protection.

Substiute Parts

MJTP1138B

APEM Inc.In Stock: 1010MJTP1138B Datasheet

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1571563-9

TE Connectivity ALCOSWITCH SwitchesIn Stock: 25071571563-9 Datasheet

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7914G-1-000

Bourns Inc.In Stock: 9157914G-1-000 Datasheet

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7914G-1-000E

Bourns Inc.In Stock: 14407914G-1-000E Datasheet

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FSM8JSMA

TE Connectivity ALCOSWITCH SwitchesIn Stock: 23187FSM8JSMA Datasheet

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TL3301BF160QGTUBE

E-SwitchIn Stock: 32756TL3301BF160QGTUBE Datasheet

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TL3301BF260QGTUBE

E-SwitchIn Stock: 29887TL3301BF260QGTUBE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MJTP1138B are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Circuit configuration (SPST-NO)
• Switch function (Off-Mom)
• Contact rating voltage compatibility (12VDC nominal)
• Mounting type (Surface Mount)
• Actuator orientation (Top Actuated)
• Termination style (Gull Wing)
• Outline dimensions (6.00mm x 6.00mm)
• Switch travel (0.25mm)
• Mechanical life (100,000 Cycles)

Acceptable Variations:

• Contact current rating: 0.05A to 0.1A (higher ratings provide margin)
• Operating force: 160gf to 300gf (within tactile feedback range)
• Actuator height: 9.50mm (primary) to 4.19mm (compact alternative)
• Operating temperature range: Extended ranges acceptable
• Actuator material: Polyamide (PA46), Polyphenylene Sulfide (PPS), or Silicone Rubber
• Packaging format: Bulk, Cut Tape, or Tube

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Same Voltage Rating):

TL3301BF160QGTUBE and TL3301BF260QGTUBE (E-Switch) are direct functional equivalents to the MJTP1138B. Both maintain the 0.05A @ 12VDC contact rating, identical outline dimensions (6.00mm x 6.00mm), 9.50mm actuator height, and 0.25mm switch travel. All three parts are ROHS3 compliant with MSL 1 rating. The TL3301BF160QGTUBE matches the 160gf operating force exactly, while TL3301BF260QGTUBE provides increased tactile feedback at 260gf. Both are available in Tube packaging with substantial inventory.

Higher Voltage Rated Alternatives:

1571563-9 (TE Connectivity FSMJSMA series) and FSM8JSMA (TE Connectivity FSMJSMA series) are rated for 0.05A @ 24VDC, providing higher voltage margin. Both maintain 6.00mm x 6.00mm outline, 9.50mm actuator height, 160gf operating force, and 0.25mm switch travel. These parts are suitable for applications requiring extended voltage headroom. FSM8JSMA offers higher inventory availability (23,089 pcs) in Bulk packaging.

Compact Profile Alternative:

7914G-1-000 and 7914G-1-000E (Bourns 7914 series) provide a compact 4.19mm actuator height with 5.00mm x 5.00mm outline. These parts are rated for 0.1A @ 16VAC/DC with 300gf operating force and include IP67 ingress protection. The reduced actuator height makes these suitable for space-constrained applications. Available in both Tube (7914G-1-000, 858 pcs) and Cut Tape (7914G-1-000E, 1,419 pcs) packaging. Operating temperature range extends to -55°C ~ 125°C.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can I use 1571563-9 or FSM8JSMA in place of MJTP1138B?

A: Yes. Both TE Connectivity parts maintain identical mechanical and electrical characteristics at the component level: SPST-NO circuit, Off-Mom function, 0.05A contact rating, 6.00mm x 6.00mm outline, 9.50mm actuator height, 160gf operating force, and 0.25mm switch travel. The 24VDC rating provides additional voltage margin in 12VDC applications. All parts are ROHS3 compliant with MSL 1.

Q: What is the difference between TL3301BF160QGTUBE and TL3301BF260QGTUBE?

A: Both E-Switch parts are identical except for operating force: TL3301BF160QGTUBE provides 160gf (matching MJTP1138B), while TL3301BF260QGTUBE provides 260gf for increased tactile feedback. Select based on desired actuation force for your application.

Q: Can I use the Bourns 7914G series as a direct replacement?

A: The Bourns 7914G series is functionally compatible but with design trade-offs. It provides a compact 4.19mm actuator height (versus 9.50mm) and 5.00mm x 5.00mm outline (versus 6.00mm x 6.00mm), making it suitable for space-constrained PCB layouts. It offers higher contact rating (0.1A @ 16VAC/DC) and IP67 ingress protection. However, the reduced actuator height and increased operating force (300gf) may affect user interface feel. PCB footprint redesign is required.

Q: Are all substitute parts RoHS and MSL compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and rated MSL 1 (Unlimited moisture sensitivity level), matching the MJTP1138B specifications.

Q: What packaging options are available?

A: MJTP1138B is supplied in Bulk. Substitute parts are available in multiple formats: Bulk (FSM8JSMA, 23,089 pcs), Cut Tape & Digi-Reel (1571563-9, 2,400 pcs; 7914G-1-000E, 1,419 pcs), and Tube (7914G-1-000, 858 pcs; TL3301BF160QGTUBE, 32,660 pcs; TL3301BF260QGTUBE, 29,797 pcs). Select packaging based on assembly process requirements.

Q: Which substitute offers the widest operating temperature range?

A: The Bourns 7914G series (both 7914G-1-000 and 7914G-1-000E) operates from -55°C ~ 125°C, compared to MJTP1138B at -20°C ~ 70°C. This extended range is suitable for industrial or automotive applications requiring extreme temperature performance.