73JA100K Equivalent & Substitute Parts Reference

Part Overview

The 73JA100K is a 100k Ohm, 2-watt wirewound linear potentiometer manufactured by Honeywell Sensing and Productivity Solutions. This panel-mount component features a 10-turn adjustment mechanism with solder lug termination and is designed for applications requiring precise resistive control in industrial and instrumentation environments.

The 73JA100K is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

73JA100K

Honeywell Sensing and Productivity SolutionsIn Stock: 76573JA100K Datasheet

Current PartRFQ

3540S-1-104L

Bourns Inc.In Stock: 12003540S-1-104L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 73JA100K is determined by strict equivalence across the following critical parameters:

• Resistance Value: 100k Ohm (exact match required)
• Power Rating: 2W (exact match required)
• Taper Type: Linear (exact match required)
• Number of Turns: 10 (exact match required)
• Termination Style: Solder Lug (exact match required)
• Mounting Configuration: Panel Mount with 3/8-32 bushing thread (exact match required)
• Body Diameter: 0.875" (22.23mm) (exact match required)
• Resistive Material: Wirewound (exact match required)

The substitute part 3540S-1-104L from Bourns Inc. meets all critical electrical and mechanical parameters required for direct substitution with the 73JA100K.

Parameter Comparison

Engineering Selection Recommendations

The 3540S-1-104L from Bourns Inc. is a direct functional equivalent to the obsolete 73JA100K. Selection of the Bourns substitute is supported by the following factors:

Electrical Equivalence: All critical electrical parameters match exactly, including resistance value, power rating, tolerance, number of turns, and taper type.

Mechanical Compatibility: Physical dimensions, mounting configuration, bushing thread specification, and actuator geometry are equivalent within manufacturing tolerances.

Regulatory Compliance: Both components meet EAR99 export classification and comply with RoHS directives. The Bourns part carries ROHS3 certification, representing current compliance standards.

Supply Availability: The 3540S-1-104L is classified as active product status with confirmed inventory availability (1160 pcs), whereas the 73JA100K is obsolete.

Temperature Performance: The 73JA100K exhibits superior temperature coefficient performance (±20ppm/°C versus ±50ppm/°C). Applications requiring the tighter temperature specification of the original part should evaluate this parameter against system requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3540S-1-104L directly replace the 73JA100K in existing designs?

A: Yes. The 3540S-1-104L meets all critical electrical and mechanical specifications required for direct substitution. Panel mounting dimensions, bushing thread size, solder lug termination, and resistive characteristics are equivalent.

Q: What is the primary difference between these two parts?

A: The primary difference is product status and temperature coefficient. The 73JA100K is obsolete; the 3540S-1-104L is active production. The 73JA100K has a temperature coefficient of ±20ppm/°C; the 3540S-1-104L has ±50ppm/°C. Applications operating across wide temperature ranges should evaluate whether this difference impacts performance requirements.

Q: Are there packaging differences between the 73JA100K and 3540S-1-104L?

A: The 73JA100K is supplied with solder lug termination in standard packaging. The 3540S-1-104L is supplied in tray packaging. Both use identical solder lug termination style. Tray packaging is standard for active production components and does not affect electrical or mechanical function.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both components are RoHS compliant. The 3540S-1-104L carries ROHS3 certification, representing current regulatory standards. Both are classified as EAR99 for export purposes.

Q: What inventory considerations apply to these parts?

A: The 73JA100K has 670 pcs available as new original stock but is obsolete. The 3540S-1-104L has 1160 pcs available and is active production, ensuring long-term supply continuity.