Honeywell 11SM98-T Snap Action Switch: Equivalent & Substitute Parts

Part Overview

The Honeywell 11SM98-T is a snap action switch with Single Pole Double Throw (SPDT) circuit configuration, rated for 5A at 250V AC and 30V DC. This component features a round pin plunger actuator and chassis mount termination via solder turret. The 11SM98-T is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The substitute part 11SM1-T provides functional equivalence while maintaining active product status.

Substiute Parts

11SM98-T

Honeywell Sensing and Productivity SolutionsIn Stock: 93611SM98-T Datasheet

Current PartRFQ

11SM1-T

Honeywell Sensing and Productivity SolutionsIn Stock: 100511SM1-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the 11SM98-T and 11SM1-T is valid based on the following criteria:

Electrical Parameters (Identical):

• Circuit configuration: SPDT
• Switch function: On-Momentary
• Current rating: 5A AC/DC
• Voltage ratings: 250V AC / 30V DC
• Operating force: 141gf
• Release force: 28gf
• Differential travel: 0.004" (0.1mm)
• Overtravel: 0.005" (0.13mm)
• Operating temperature range: -55°C to 125°C
• Mechanical life: 10,000,000 cycles

Mechanical Parameters (Identical):

• Actuator type: Round pin plunger
• Mounting type: Chassis mount
• Termination style: Solder turret

Minor Variations (Within Tolerance):

• Operating position: 0.321" (8.2mm) vs. 0.330" (8.4mm) — difference of 0.009" (0.2mm)
• Pretravel: 0.020" (0.5mm) — identical

Compliance Differences:

• 11SM98-T: RoHS Compliant
• 11SM1-T: ROHS3 Compliant, REACH Affected

The 11SM1-T represents the active product line continuation with enhanced regulatory compliance documentation.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Procurement: The 11SM1-T is the recommended selection. This part maintains identical electrical and mechanical specifications to the 11SM98-T while offering active product status and enhanced regulatory compliance (ROHS3 and REACH documentation). The 11SM1-T is currently in stock with 949 units available.

For Legacy System Maintenance: The 11SM98-T remains functionally equivalent for existing applications where the component is already integrated. However, as this part is classified as obsolete, long-term availability cannot be assured. Transition planning to the 11SM1-T is advised for systems requiring component replacement or restocking.

Compatibility Considerations: The operating position variance of 0.009" (0.2mm) between the two parts falls within standard mechanical tolerances for snap action switch applications and does not affect functional performance in chassis-mounted configurations. Both parts share identical electrical ratings, actuator geometry, and termination methods, ensuring direct functional substitution in circuit applications.

Compliance and Certification: Both parts carry MSL 1 rating (unlimited moisture sensitivity protection) and are classified under ECCN EAR99 and HTSUS 8536.50.7000. The 11SM1-T provides additional REACH compliance documentation, making it the preferred choice for applications subject to enhanced regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 11SM1-T directly replace the 11SM98-T in existing assemblies?

A: Yes. The 11SM1-T provides direct functional replacement. Both parts share identical SPDT circuit configuration, 5A/250V AC and 30V DC ratings, round pin plunger actuator, chassis mount configuration, and solder turret termination. The 0.009" difference in operating position is within standard mechanical tolerances and does not affect performance in chassis-mounted applications.

Q: What is the significance of the operating position difference (0.321" vs. 0.330")?

A: The 0.009" (0.2mm) variance represents a minor dimensional difference within acceptable engineering tolerances for snap action switches. This difference does not impact electrical performance, switching characteristics, or mechanical durability. Both parts operate identically in terms of actuation force, release force, and travel characteristics.

Q: Why is the 11SM98-T classified as obsolete?

A: The 11SM98-T has been superseded by the 11SM1-T in Honeywell's active product portfolio. The 11SM1-T offers the same functional specifications with enhanced regulatory compliance (ROHS3 and REACH documentation). Obsolete classification indicates that the manufacturer has transitioned this design to the newer part number.

Q: Are there packaging differences between these parts?

A: Yes. The 11SM98-T is supplied in bulk packaging, while the 11SM1-T is supplied in tray packaging. Tray packaging provides improved component protection and handling efficiency in automated assembly environments. This difference does not affect component performance or electrical characteristics.

Q: What compliance certifications apply to both parts?

A: Both the 11SM98-T and 11SM1-T are RoHS compliant and carry MSL 1 rating (unlimited moisture sensitivity protection). The 11SM1-T additionally provides ROHS3 compliance and REACH documentation. Both parts are classified under ECCN EAR99 and HTSUS 8536.50.7000.

Q: Is the 11SM1-T suitable for applications requiring REACH compliance?

A: Yes. The 11SM1-T is documented as REACH Affected, providing the necessary compliance documentation for applications subject to REACH regulations. The 11SM98-T does not carry explicit REACH documentation, making the 11SM1-T the appropriate choice for regulated applications.

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

A: Both the 11SM98-T and 11SM1-T are rated for 10,000,000 mechanical cycles, providing equivalent durability and service life in snap action switch applications.

Q: Can these parts be used interchangeably in new product designs?

A: The 11SM1-T is the recommended choice for new designs. As the active product, it ensures long-term availability and support. The 11SM98-T, being obsolete, should not be specified for new designs due to uncertain future availability.