Honeywell 43C1500 Equivalent & Substitute Parts

Part Overview

The Honeywell 43C1500 is a 500 Ohm, 2W wirewound linear potentiometer designed for panel mount applications with a 1-turn rotation and solder lug termination. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 43C1500 series represents a legacy product line that requires identification of compatible alternatives to ensure design continuity and supply chain reliability.

Substiute Parts

43C1500

Honeywell Sensing and Productivity SolutionsIn Stock: 67743C1500 Datasheet

Current PartRFQ

026TB32R501B1A1

CTS ElectrocomponentsIn Stock: 2093026TB32R501B1A1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 43C1500 is determined by strict equivalence across the following critical parameters:

Core Electrical Parameters:

• Resistance value: 500 Ohms (exact match required)
• Taper characteristic: Linear (functional requirement for application behavior)
• Number of turns: 1 (mechanical and electrical performance determinant)
• Number of gangs: 1 (circuit configuration requirement)
• Resistive material: Wirewound (thermal and stability characteristics)

Mechanical & Interface Parameters:

• Termination style: Solder Lug (PCB assembly compatibility)
• Mounting type: Panel Mount (form factor requirement)
• Bushing thread: 3/8-32 (mechanical fit requirement)
• Rotation: 300° (operational range specification)
• Actuator type: Round (user interface compatibility)
• Actuator diameter: 0.250" (6.35mm) (mechanical fit requirement)

Allowable Variations:

• Power rating: Substitute parts may exceed the original 2W specification, provided the higher rating does not introduce incompatibility with the circuit design
• Tolerance: Variations in tolerance are acceptable if the substitute part meets the circuit's accuracy requirements
• Physical body size: Minor variations in body diameter are acceptable if mounting and thermal characteristics remain compatible
• Actuator length: Variations are acceptable provided panel clearance is maintained

The CTS Electrocomponents 026TB32R501B1A1 meets all core electrical and mechanical requirements for substitution.

Parameter Comparison

Engineering Selection Recommendations

CTS Electrocomponents 026TB32R501B1A1 as Primary Substitute:

The CTS 026TB32R501B1A1 is the qualified substitute for the obsolete Honeywell 43C1500. This substitution is based on the following engineering criteria:

Electrical Compatibility: All critical electrical parameters match exactly: 500 Ohm resistance, linear taper, 1-turn configuration, and wirewound construction. The 5W power rating of the substitute exceeds the original 2W specification, providing additional thermal margin without introducing circuit incompatibility. The ±20% tolerance of the substitute is wider than the original ±5%, which must be evaluated against the specific circuit requirements.

Mechanical Compatibility: The substitute maintains identical mechanical interfaces: 3/8-32 bushing thread, solder lug termination, round actuator with 0.250" diameter, and 300° rotation. These parameters ensure direct mechanical and electrical integration into existing designs.

Physical Form Factor: The substitute features a smaller body diameter (0.937" versus 1.126") and shorter actuator length (1.000" versus 2.000"). These dimensional reductions may provide advantages in space-constrained panel layouts. Panel clearance and actuator accessibility must be verified for the specific application.

Product Status & Compliance: The CTS substitute is classified as Active, ensuring ongoing availability and supply chain continuity. Both the original and substitute parts are RoHS compliant, with the substitute meeting the more stringent ROHS3 standard. The substitute is REACH Unaffected, confirming regulatory compliance for European markets.

Inventory & Availability: The CTS 026TB32R501B1A1 maintains substantial inventory (2,081 pieces in stock), supporting immediate procurement and production requirements.

Frequently Asked Questions (FAQ)

Q: Can the CTS 026TB32R501B1A1 directly replace the Honeywell 43C1500 in existing designs?

A: Yes, the CTS substitute provides direct electrical and mechanical compatibility. All critical parameters—resistance, taper, termination, mounting interface, and rotation—are identical. The substitute's higher power rating (5W versus 2W) and wider tolerance (±20% versus ±5%) must be evaluated against circuit requirements. Physical dimensions differ; panel clearance and actuator accessibility must be verified.

Q: What is the significance of the tolerance difference between the original (±5%) and substitute (±20%)?

A: Tolerance defines the acceptable resistance variation from the nominal 500 Ohm value. The original 43C1500 maintains tighter tolerance (±475–525 Ohms), while the substitute allows wider variation (±400–600 Ohms). Applications requiring precise resistance values must confirm that the substitute's tolerance meets circuit specifications.

Q: Why does the substitute have a higher power rating (5W versus 2W)?

A: The 5W rating indicates greater thermal dissipation capability. This provides additional safety margin and does not introduce incompatibility. The circuit design determines actual power dissipation; the substitute's higher rating ensures adequate thermal performance under all operating conditions.

Q: Are there mechanical fit concerns due to the smaller body diameter and shorter actuator length?

A: The substitute's smaller body diameter (0.937" versus 1.126") and shorter actuator length (1.000" versus 2.000") may affect panel layout and user interface ergonomics. The identical bushing thread (3/8-32) and actuator diameter (0.250") ensure mechanical mounting compatibility. Panel cutout dimensions and actuator accessibility must be verified for the specific application.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both designations confirm restriction of hazardous substances. ROHS3 represents the current European Union directive standard, incorporating additional substance restrictions beyond the original RoHS specification. The substitute's ROHS3 compliance ensures alignment with current regulatory requirements.

Q: Is the CTS 026TB32R501B1A1 available in the same packaging as the original?

A: The original Honeywell 43C1500 packaging is listed as "-" (unspecified). The CTS substitute is supplied in Bulk packaging. Packaging requirements for production assembly must be confirmed with procurement specifications.

Q: What does "REACH Unaffected" mean for the CTS substitute?

A: REACH Unaffected indicates that the component does not contain substances of very high concern (SVHC) listed under the European REACH regulation. This confirms compliance with European chemical safety requirements.