Honeywell 73JB1K Wirewound Potentiometer: Equivalent & Substitute Parts

Part Overview

The Honeywell Sensing and Productivity Solutions 73JB1K is a 1k Ohm, 2W wirewound linear potentiometer designed for panel mount applications with a 10-turn adjustment mechanism. This component features solder lug termination and is rated for 3600° rotation with ±5% tolerance and ±20ppm/°C temperature coefficient.

The 73JB1K carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

73JB1K

Honeywell Sensing and Productivity SolutionsIn Stock: 98873JB1K Datasheet

Current PartRFQ

534B1102JC

Vishay SpectrolIn Stock: 182377534B1102JC Datasheet

DirectRFQ

3590S-1-102L

Bourns Inc.In Stock: 9473590S-1-102L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 73JB1K are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters:

• Resistance value: 1k Ohm (exact match required)
• Power rating: 2W (exact match required)
• Tolerance: ±5% (exact match required)
• Taper characteristic: Linear (exact match required)
• Number of turns: 10 (exact match required)

Mechanical Parameters:

• Resistive material: Wirewound (exact match required)
• Termination style: Solder Lug (exact match required)
• Mounting type: Panel Mount (exact match required)
• Bushing thread: 3/8-32 (exact match required)
• Rotation: 3600° (exact match required)
• Body size: Round - 0.875" Dia (22.23mm) (exact match required)

Compliance Parameters:

• RoHS compliance status
• Moisture Sensitivity Level: 1 (Unlimited)

The identified substitute parts meet all mandatory electrical and mechanical parameters. Variations in temperature coefficient and compliance certifications are noted but do not preclude substitution where the core functional parameters align.

Parameter Comparison

Engineering Selection Recommendations

534B1102JC (Vishay Spectrol): This part is classified as Active product status, ensuring ongoing manufacturer support and availability. It demonstrates full compliance with ROHS3 standards and carries REACH Unaffected status. The temperature coefficient specification of 20ppm/°C (without ±) represents a tighter thermal performance envelope compared to the original 73JB1K. All core electrical and mechanical parameters align exactly with the 73JB1K specification. This part is suitable for direct substitution in applications where active product support and enhanced compliance certifications are required.

3590S-1-102L (Bourns Inc.): This part is classified as Active product status with ROHS3 compliance. The temperature coefficient specification of ±50ppm/°C is broader than the original 73JB1K (±20ppm/°C), indicating a wider acceptable thermal drift range. The Moisture Sensitivity Level is listed as Not Applicable, differing from the original specification. All core electrical and mechanical parameters match the 73JB1K specification. This part is suitable for direct substitution in applications where the broader temperature coefficient tolerance is acceptable and where REACH Affected status is permissible.

Both substitute parts satisfy the mandatory functional requirements for the 73JB1K. Selection between them depends on compliance requirements, temperature stability specifications, and supply chain preferences specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the 534B1102JC be used as a direct replacement for the 73JB1K?

A: Yes. The 534B1102JC matches all mandatory electrical and mechanical parameters: 1k Ohm resistance, 2W power rating, ±5% tolerance, linear taper, 10-turn wirewound construction, solder lug termination, 3/8-32 bushing thread, panel mount configuration, and 3600° rotation. Physical dimensions and mounting interfaces are identical.

Q: What is the difference in temperature coefficient between the substitute parts and the original?

A: The 73JB1K specifies ±20ppm/°C. The 534B1102JC specifies 20ppm/°C (without ± notation). The 3590S-1-102L specifies ±50ppm/°C. These differences indicate varying thermal stability characteristics. Applications requiring strict temperature coefficient performance should verify compatibility with the specific substitute part's thermal specification.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the 534B1102JC and 3590S-1-102L carry ROHS3 compliance certification. The original 73JB1K is RoHS Compliant. All three parts meet RoHS requirements.

Q: What is the difference in Moisture Sensitivity Level between the parts?

A: The 73JB1K and 534B1102JC both specify Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions. The 3590S-1-102L lists Moisture Sensitivity Level as Not Applicable. This difference does not affect substitution eligibility for standard applications.

Q: Are the physical dimensions identical across all three parts?

A: Yes. All three parts feature identical body dimensions (Round - 0.875" Dia / 22.23mm), actuator length (approximately 0.812-0.813"), actuator diameter (approximately 0.248-0.250"), and bushing thread (3/8-32). Panel mounting interfaces are compatible.

Q: What is the inventory status of each part?

A: The 73JB1K (obsolete) has 933 Pcs in stock. The 534B1102JC (active) has 182,300 Pcs in stock. The 3590S-1-102L (active) has 887 Pcs in stock. Active product status parts offer superior long-term supply chain reliability.