FSMRA2JA Equivalent & Substitute Parts

Part Overview

The FSMRA2JA is a tactile switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a SPST-NO (Single Pole Single Throw Normally Open) device with side actuation and through-hole right-angle mounting. The switch is rated for 0.05A at 24VDC and features an off-momentary switch function suitable for applications requiring tactile feedback with low-force actuation.

The FSMRA2JA carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure continued availability for new designs, maintenance applications, and production continuity where this component is specified.

Substiute Parts

FSMRA2JA

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1249FSMRA2JA Datasheet

Current PartRFQ

1825027-5

TE Connectivity ALCOSWITCH SwitchesIn Stock: 35061825027-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FSMRA2JA is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration (SPST-NO)
• Contact rating (0.05A @ 24VDC)
• Switch function (Off-Mom)
• Mounting type (Through Hole, Right Angle)
• Actuator orientation (Side Actuated)
• Termination style (PC Pin)
• Outline dimensions (7.11mm x 6.60mm)
• Operating temperature range (-20°C ~ 105°C)
• Mechanical life (100,000 Cycles)
• Series designation (FSMRAJ)

The substitute part 1825027-5 meets all mandatory matching parameters. Variations in operating force (260gf vs. 160gf), switch travel (0.30mm vs. 0.25mm), and actuator material (Acetal vs. PBT) represent design differences within the same functional class and do not prevent substitution where the primary electrical and mechanical interface requirements are satisfied.

Parameter Comparison

Engineering Selection Recommendations

The FSMRA2JA is classified as obsolete, making 1825027-5 the appropriate substitute for new designs and ongoing production requirements.

1825027-5 Selection Basis:

The substitute part maintains full electrical and mechanical compatibility with the FSMRA2JA across all critical interface parameters. Both components share identical circuit configuration, contact rating, mounting geometry, and operating temperature specifications. The substitute is manufactured by the same supplier (TE Connectivity ALCOSWITCH Switches) within the same FSMRAJ series.

The 1825027-5 carries active product status, ensuring long-term availability and supply chain continuity. The part is RoHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating, indicating robust handling characteristics suitable for standard manufacturing environments.

Both parts maintain REACH Unaffected status and EAR99 export classification, ensuring regulatory consistency across applications.

Frequently Asked Questions (FAQ)

Q: Can 1825027-5 be used as a direct replacement for FSMRA2JA in existing designs?

A: Yes. The 1825027-5 maintains identical electrical ratings (0.05A @ 24VDC), circuit configuration (SPST-NO), mounting type (Through Hole, Right Angle), and physical outline (7.11mm x 6.60mm). PCB layouts and connector interfaces designed for FSMRA2JA accommodate 1825027-5 without modification.

Q: What are the differences between FSMRA2JA and 1825027-5?

A: The primary differences are operating force (260gf vs. 160gf), switch travel (0.30mm vs. 0.25mm), and actuator material (Acetal vs. PBT). These variations represent design refinements within the same functional class and do not affect electrical performance or mechanical interface compatibility.

Q: Why is FSMRA2JA obsolete while 1825027-5 is active?

A: Product lifecycle management by TE Connectivity has transitioned the FSMRAJ series toward the 1825027-5 variant. The active status of 1825027-5 ensures continued manufacturing and supply availability for applications requiring this switch type.

Q: Are there packaging differences between these parts?

A: FSMRA2JA packaging is listed as standard, while 1825027-5 is supplied in bulk packaging. Both parts use identical PC Pin termination and are suitable for automated assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both FSMRA2JA and 1825027-5 are REACH Unaffected and classified as EAR99 for export purposes. The 1825027-5 additionally carries RoHS3 compliance certification and MSL 1 moisture sensitivity rating, indicating enhanced regulatory alignment with current manufacturing standards.

Q: What is the mechanical life expectancy for both parts?

A: Both components are rated for 100,000 mechanical cycles, providing equivalent durability and service life in momentary switch applications.