Honeywell 73JB5K Equivalent & Substitute Parts

Part Overview

The Honeywell 73JB5K is a 5k Ohm, 2W wirewound linear potentiometer designed for panel mount applications with a 10-turn adjustment mechanism and solder lug termination. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production, maintenance, and design continuity. The 73JB5K series has been superseded by active production alternatives that maintain electrical and mechanical compatibility while offering current manufacturing support and compliance certifications.

Substiute Parts

73JB5K

Honeywell Sensing and Productivity SolutionsIn Stock: 103473JB5K Datasheet

Current PartRFQ

534B1502JC

Vishay SpectrolIn Stock: 947534B1502JC Datasheet

DirectRFQ

3590S-1-502L

Bourns Inc.In Stock: 7773590S-1-502L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 73JB5K are qualified based on strict electrical and mechanical parameter matching within the wirewound potentiometer category. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Resistance value: 5k Ohm (exact match required)
• Power rating: 2W (exact match required)
• Taper characteristic: Linear (exact match required)
• Number of turns: 10 (exact match required)
• Resistive material: Wirewound (exact match required)
• Termination: 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)

Allowable Variation Parameters:

• Actuator length: ±0.001" tolerance
• Actuator diameter: ±0.002" tolerance
• Temperature coefficient: Within ±50ppm/°C range
• Product status: Active production preferred for new designs

The identified substitute parts (534B1502JC and 3590S-1-502L) satisfy all critical matching parameters and fall within allowable mechanical tolerances.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production:

The Vishay Spectrol 534B1502JC is the primary recommended substitute for the obsolete Honeywell 73JB5K. This part maintains active production status, carries ROHS3 compliance certification, and demonstrates temperature coefficient performance (20ppm/°C) that matches the original specification. Mechanical dimensions align within standard engineering tolerances, with actuator length and diameter variations of less than 0.002 inches.

Alternative Selection:

The Bourns Inc. 3590S-1-502L serves as a secondary equivalent option. This part is actively manufactured and carries ROHS3 compliance. The temperature coefficient specification (±50ppm/°C) is broader than the original 73JB5K (±20ppm/°C) but remains within acceptable wirewound potentiometer performance ranges for most applications. REACH Affected status indicates regulatory documentation requirements for certain markets.

Compliance Considerations:

Both substitute parts satisfy RoHS3 requirements, making them suitable for applications subject to European Union Restriction of Hazardous Substances directives. The 534B1502JC carries REACH Unaffected status, while the 3590S-1-502L is REACH Affected, requiring additional compliance verification for specific end-use applications.

Frequently Asked Questions (FAQ)

Q: Can the 534B1502JC directly replace the 73JB5K in existing assemblies?

A: Yes. The 534B1502JC matches all critical electrical parameters (5k Ohm, 2W, linear taper, 10-turn wirewound) and mechanical specifications (panel mount, 3/8-32 bushing, 0.875" body diameter, solder lug termination). Actuator dimensions vary by less than 0.002 inches, which is within standard mechanical tolerances for panel mount potentiometers.

Q: What is the difference between the Vishay Spectrol and Bourns substitute parts?

A: Both parts satisfy the core electrical and mechanical requirements. The primary difference is temperature coefficient specification: the Vishay Spectrol 534B1502JC specifies 20ppm/°C, while the Bourns 3590S-1-502L specifies ±50ppm/°C. For applications requiring tighter temperature stability, the Vishay part is preferred. The Bourns part carries REACH Affected status, requiring additional compliance documentation for certain markets.

Q: Why is the 73JB5K listed as obsolete?

A: The Honeywell 73JB5K has been discontinued from active production. Equivalent substitute parts from Vishay Spectrol and Bourns Inc. provide functional and mechanical equivalence while maintaining current manufacturing support and modern compliance certifications.

Q: Are there packaging differences between these parts?

A: The Honeywell 73JB5K was supplied in standard packaging. Both substitute parts (534B1502JC and 3590S-1-502L) are available in bulk packaging, which is standard for wirewound potentiometer distribution.

Q: What is the significance of the RoHS3 compliance on the substitute parts?

A: RoHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive 2011/65/EU as amended. Both substitute parts meet these requirements, making them suitable for applications in regulated markets including the European Union.

Q: Can these parts be used interchangeably in the same circuit?

A: Yes, within the electrical and mechanical tolerances specified. All three parts share identical resistance (5k Ohm), power rating (2W), taper (linear), and termination style (solder lug). The temperature coefficient variation between parts should be evaluated based on specific application temperature operating ranges.