TC86P-1-504 Equivalent & Substitute Parts

Part Overview

The TC86P-1-504 is a 500 kOhms trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® TC86 series. This through-hole component features PC pin termination, cermet resistive material, and top adjustment capability with 1 turn operation. The device is rated for 0.3W power dissipation with ±20% tolerance and ±250ppm/°C temperature coefficient.

The TC86P-1-504 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this model is no longer procurable.

Substiute Parts

TC86P-1-504

Bourns Inc.In Stock: 894TC86P-1-504 Datasheet

Current PartRFQ

3306P-1-504

Bourns Inc.In Stock: 22053306P-1-504 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC86P-1-504 is determined by the following critical parameters:

• Resistance value: 500 kOhms (exact match required)
• Resistive material: Cermet (maintains performance characteristics)
• Mounting type: Through Hole (PCB compatibility)
• Termination style: PC Pins (circuit board interface)
• Adjustment type: Top Adjustment (mechanical interface)
• Number of turns: 1 (operational consistency)
• Temperature coefficient: ±250ppm/°C (thermal stability)

The 3306P-1-504 qualifies as a substitute based on matching all critical parameters. Variations in power rating (0.3W vs. 0.2W), tolerance (±20% vs. ±25%), physical dimensions (7.70mm x 6.80mm vs. 8.10mm x 6.80mm), and product status do not disqualify substitution when the application permits these differences.

Parameter Comparison

Engineering Selection Recommendations

The 3306P-1-504 is an active product with current manufacturing support, making it the primary substitute for the obsolete TC86P-1-504. Both components meet ROHS3 compliance and REACH requirements, ensuring regulatory alignment for new designs and production environments.

The substitute maintains identical resistance, temperature coefficient, adjustment mechanism, and termination characteristics. The reduced power rating (0.2W vs. 0.3W) and increased tolerance (±25% vs. ±20%) represent the primary technical differences. Selection should be based on application power dissipation requirements and tolerance specifications. The slightly larger physical footprint (8.10mm vs. 7.70mm width) requires verification of PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can the 3306P-1-504 directly replace the TC86P-1-504 in existing designs?

A: Direct substitution is possible when the application power dissipation does not exceed 0.2W and the ±25% tolerance specification is acceptable. The identical resistance value, temperature coefficient, and adjustment mechanism ensure functional compatibility. PCB layout must accommodate the 0.4mm width increase.

Q: What are the key differences between these two parts?

A: The primary differences are power rating (0.3W vs. 0.2W), tolerance (±20% vs. ±25%), physical width (7.70mm vs. 8.10mm), and product status (obsolete vs. active). All other electrical and mechanical parameters are identical.

Q: Why is the 3306P-1-504 considered a substitute if the power rating is lower?

A: The 3306P-1-504 qualifies as a substitute when application requirements permit operation within its 0.2W power specification. The matching resistance, temperature coefficient, and mechanical interface ensure electrical and physical compatibility. Applications requiring the full 0.3W rating would require alternative evaluation.

Q: Are there compliance or certification concerns with substitution?

A: Both parts maintain ROHS3 compliance and REACH unaffected status. No compliance barriers exist for substitution in regulated environments.

Q: How does the tolerance difference affect circuit performance?

A: The TC86P-1-504 offers ±20% tolerance while the 3306P-1-504 provides ±25% tolerance. Applications requiring tighter tolerance control should evaluate whether the additional tolerance band impacts circuit function or calibration procedures.