FSM13J Equivalent & Substitute Parts

Part Overview

The FSM13J is a tactile switch manufactured by TE Connectivity ALCOSWITCH Switches, classified as a SPST-NO (Single Pole Single Throw Normally Open) switch with a contact rating of 0.05A at 24VDC. This component features top actuation, through-hole mounting, and a 6.00mm x 6.00mm outline with a 13.00mm actuator height. The FSM13J is currently listed as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and procurement needs.

Substiute Parts

FSM13J

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1183FSM13J Datasheet

Current PartRFQ

2-1825955-6

TE Connectivity ALCOSWITCH SwitchesIn Stock: 207772-1825955-6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The FSM13J can be substituted with the TE Connectivity ALCOSWITCH Switches part number 2-1825955-6 based on electrical and mechanical parameter equivalence. Both components share identical specifications across the following critical parameters:

• Circuit configuration: SPST-NO
• Contact rating: 0.05A @ 24VDC
• Switch function: Off-Mom
• Mounting type: Through Hole
• Actuator orientation: Top Actuated
• Outline dimensions: 6.00mm x 6.00mm
• Actuator height: 13.00mm
• Operating force: 160gf
• Operating temperature range: -35°C ~ 85°C
• Mechanical life: 100,000 Cycles
• Termination style: PC Pin
• Features: Grounding Pin
• Moisture sensitivity level: 1 (Unlimited)

The primary distinction between these components is product status and packaging configuration. The FSM13J is obsolete, while 2-1825955-6 is active and available in bulk packaging with significantly higher inventory levels.

Parameter Comparison

Engineering Selection Recommendations

The 2-1825955-6 is the direct substitute for the obsolete FSM13J. Both components are manufactured by TE Connectivity ALCOSWITCH Switches and belong to the FSMJ series. The electrical and mechanical specifications are functionally equivalent, with both rated for 0.05A at 24VDC and sharing identical mounting, actuator, and dimensional characteristics.

The 2-1825955-6 offers the following advantages for new designs and procurement:

• Active product status with confirmed long-term availability
• ROHS3 compliance certification
• Significantly higher inventory availability (20,727 units versus 1,120 units)
• Bulk packaging configuration suitable for production volumes

The switch travel parameter differs between the two components (0.25mm for FSM13J versus 0.10mm for 2-1825955-6). This difference reflects a design variation within the same functional class and does not affect electrical performance or circuit compatibility. Both values fall within acceptable tactile switch specifications for SPST-NO applications at the specified contact rating.

Frequently Asked Questions (FAQ)

Q: Are FSM13J and 2-1825955-6 electrically interchangeable?

A: Yes. Both components are SPST-NO tactile switches with identical contact ratings (0.05A @ 24VDC), operating temperature ranges (-35°C ~ 85°C), and mechanical life specifications (100,000 cycles). They share the same circuit configuration and switch function (Off-Mom).

Q: What are the physical compatibility considerations?

A: Both components have identical through-hole mounting configurations, 6.00mm x 6.00mm outlines, 13.00mm actuator heights, and PC pin termination styles. PCB layouts designed for FSM13J will accommodate 2-1825955-6 without modification.

Q: Why is the switch travel specification different?

A: The FSM13J specifies 0.25mm switch travel while 2-1825955-6 specifies 0.10mm. This represents a design variation within the FSMJ series. Both values are within normal tactile switch parameters and do not affect electrical performance or functional compatibility in SPST-NO applications.

Q: What is the significance of the product status difference?

A: FSM13J is listed as obsolete, indicating discontinued manufacturing and limited future availability. The 2-1825955-6 is active, ensuring continued supply and support for new designs and production requirements.

Q: Does the packaging difference affect component performance?

A: No. The packaging difference (standard versus bulk) reflects distribution and procurement configuration only. The electrical and mechanical specifications of the components themselves are identical.

Q: Is RoHS compliance a factor in substitution?

A: The 2-1825955-6 carries ROHS3 compliance certification. If RoHS compliance is a design requirement, 2-1825955-6 meets this specification. The FSM13J RoHS status is not specified in available documentation.

Q: Can I use 2-1825955-6 in existing designs originally specified for FSM13J?

A: Yes. The components are functionally equivalent across all critical electrical and mechanical parameters. No circuit redesign or PCB layout modification is required.