Equivalent & Substitute Parts for Honeywell 73JB500

Part Overview

The Honeywell 73JB500 is a 500 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 identification of equivalent substitute parts essential for ongoing production support, maintenance, and design continuity. Substitute parts must maintain electrical performance and mechanical compatibility within the specified tolerance ranges.

Substiute Parts

73JB500

Honeywell Sensing and Productivity SolutionsIn Stock: 114273JB500 Datasheet

Current PartRFQ

534B1501JC

Vishay SpectrolIn Stock: 3014534B1501JC Datasheet

DirectRFQ

3590S-1-501L

Bourns Inc.In Stock: 11653590S-1-501L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 73JB500 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters:

• Resistance value: 500 Ohms
• Power rating: 2W minimum
• Tolerance: ±5%
• Taper: Linear
• Number of turns: 10
• Resistive material: Wirewound

Mechanical Parameters:

• Termination style: Solder Lug
• Mounting type: Panel Mount
• Bushing thread: 3/8-32
• Body diameter: 0.875" (22.23mm)
• Actuator type: Slotted
• Rotation: 3600°

All identified substitutes meet these core requirements. Variations in temperature coefficient and minor dimensional tolerances (within manufacturing standards) do not preclude substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

534B1501JC (Vishay Spectrol) is the primary substitute for the 73JB500. This part maintains active product status with ROHS3 compliance and demonstrates the closest alignment to the original specification. The temperature coefficient of 20ppm/°C (compared to ±20ppm/°C for the original) represents a minor variation within acceptable engineering tolerances for wirewound potentiometer applications. Inventory availability of 3000 units supports production continuity.

3590S-1-501L (Bourns) serves as a secondary substitute option. This part is active and ROHS3 compliant with REACH compliance documentation. The temperature coefficient specification of ±50ppm/°C represents a wider tolerance band than the original part. This substitute is suitable for applications where the broader temperature coefficient range does not impact circuit performance. Inventory availability of 1120 units provides adequate supply.

Both substitutes are mechanically and electrically compatible with the 73JB500 within the specified parameter ranges. Selection between the two should be based on application-specific temperature stability requirements and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the 534B1501JC directly replace the 73JB500 in existing designs?

A: Yes. The 534B1501JC meets all electrical and mechanical specifications of the 73JB500. Dimensional variations (actuator length 0.812" vs. 0.813", actuator diameter 0.2497" vs. 0.250") fall within standard manufacturing tolerances and do not affect panel mount compatibility or functional performance.

Q: What is the significance of the temperature coefficient difference between substitutes?

A: The 73JB500 specifies ±20ppm/°C, the 534B1501JC specifies 20ppm/°C, and the 3590S-1-501L specifies ±50ppm/°C. These variations indicate the resistance change per degree Celsius. The 3590S-1-501L exhibits a wider tolerance band. For precision applications requiring tight temperature stability, the 534B1501JC is preferred.

Q: Are both substitutes available in the same packaging as the original?

A: The 73JB500 was supplied in standard packaging. Both substitutes (534B1501JC and 3590S-1-501L) are available in bulk packaging, which is standard for wirewound potentiometer distribution. Packaging format does not affect component functionality or compatibility.

Q: Why is the 73JB500 classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The identified substitutes are active products from established manufacturers, ensuring long-term availability and supply chain stability for replacement and new production applications.

Q: Do the substitutes meet current compliance standards?

A: Yes. Both 534B1501JC and 3590S-1-501L are ROHS3 compliant. The 3590S-1-501L additionally carries REACH compliance documentation. The original 73JB500 is RoHS compliant. All parts carry EAR99 ECCN classification and identical HTSUS codes (8533.31.0000).