Honeywell 73JB200 Wirewound Potentiometer - Equivalent & Substitute Parts

Part Overview

The Honeywell 73JB200 is a 200 Ohm, 2-watt 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 active equivalent parts essential for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement without circuit redesign or mechanical modification.

Key Parameters

Parameter	Specification
Resistance Value	200 Ohms
Power Rating	2 Watts
Taper Type	Linear
Number of Turns	10
Termination Style	Solder Lug
Mounting Type	Panel Mount
Bushing Thread	3/8-32
Body Diameter	0.875" (22.23mm)
Resistive Material	Wirewound
Tolerance	±5%

Substitute Part Grouping Explanation

Substitution of the obsolete Honeywell 73JB200 is based on strict equivalence across the following critical parameters:

Resistance Value: 200 Ohms (exact match required)
Power Rating: 2 Watts (exact match required)
Taper: Linear (exact match required)
Number of Turns: 10 (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)
Resistive Material: Wirewound (exact match required)

The Bourns 3590S-1-201L meets all mandatory substitution criteria. Minor variations in temperature coefficient and actuator dimensions fall within acceptable mechanical tolerances for panel mount potentiometers and do not affect functional compatibility.

Parameter Comparison

Parameter	Honeywell 73JB200	Bourns 3590S-1-201L	Match Status
Resistance (Ohms)	200	200	Equivalent
Power (Watts)	2W	2W	Equivalent
Tolerance	±5%	±5%	Equivalent
Number of Turns	10	10	Equivalent
Taper	Linear	Linear	Equivalent
Number of Gangs	1	1	Equivalent
Termination Style	Solder Lug	Solder Lug	Equivalent
Mounting Type	Panel Mount	Panel Mount	Equivalent
Bushing Thread	3/8-32	3/8-32	Equivalent
Body Diameter	0.875" (22.23mm)	0.875" (22.23mm)	Equivalent
Resistive Material	Wirewound	Wirewound	Equivalent
Temperature Coefficient	±20ppm/°C	±50ppm/°C	Bourns specification is broader
Actuator Length	0.813" (20.64mm)	0.812" (20.63mm)	Within tolerance
Actuator Diameter	0.250" (6.35mm)	0.248" (6.30mm)	Within tolerance
Product Status	Obsolete	Active	Substitute is current production
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both compliant

Engineering Selection Recommendations

The Bourns 3590S-1-201L is the direct functional equivalent for the obsolete Honeywell 73JB200. Selection is based on the following engineering factors:

Product Status: The Bourns component is in active production, ensuring long-term availability and supply chain continuity. The Honeywell part is obsolete and subject to inventory depletion.

Compliance: Both components are RoHS compliant. The Bourns part carries ROHS3 certification, representing current regulatory compliance standards. Both are REACH Affected/Unaffected as applicable and carry EAR99 ECCN classification.

Electrical Equivalence: All critical electrical parameters—resistance value, power rating, tolerance, taper, and number of turns—are identical between the two components.

Mechanical Compatibility: Panel mount configuration, bushing thread size, body diameter, and termination style are identical. Actuator dimension variations (0.001" to 0.002") are within standard mechanical tolerances for potentiometer assemblies and do not affect functional performance or mechanical fit.

Temperature Performance: The Bourns component specifies a broader temperature coefficient (±50ppm/°C versus ±20ppm/°C). This represents a more conservative specification and does not preclude substitution in applications where the original component was qualified.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 3590S-1-201L be used as a direct replacement for the Honeywell 73JB200 without circuit modification?

A: Yes. All electrical parameters, mechanical mounting dimensions, and termination styles are equivalent. No circuit redesign is required.

Q: What is the significance of the different temperature coefficients (±20ppm/°C vs. ±50ppm/°C)?

A: The temperature coefficient defines resistance change over temperature. The Bourns specification of ±50ppm/°C is broader than the Honeywell specification of ±20ppm/°C. This means the Bourns component will experience slightly greater resistance variation across temperature extremes. For applications where the original Honeywell component was qualified, the Bourns substitute will perform within acceptable limits.

Q: Are the actuator dimension differences (0.001" to 0.002") significant?

A: No. These differences fall within standard manufacturing tolerances for potentiometer actuators and do not affect mechanical fit, panel cutout compatibility, or functional operation.

Q: What is the inventory status of these components?

A: The Honeywell 73JB200 is obsolete with 947 units in stock. The Bourns 3590S-1-201L is in active production with 1163 units in stock, providing superior long-term availability.

Q: Are both components RoHS compliant?

A: Yes. The Honeywell 73JB200 is RoHS Compliant. The Bourns 3590S-1-201L is ROHS3 Compliant, representing current regulatory standards.

Q: What packaging is available for the substitute part?

A: The Bourns 3590S-1-201L is supplied in Bulk packaging.

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