TC86K-1-502 Equivalent & Substitute Parts

Part Overview

The TC86K-1-502 is a through-hole trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® TC86 series. This component is a 5 kOhms, 0.3W cermet trimmer with side adjustment and PC pin termination, designed for applications requiring precision variable resistance in compact form factors. The TC86K-1-502 is classified as obsolete, making identification of compatible substitute components essential for ongoing production support and design updates.

Substiute Parts

TC86K-1-502

Bourns Inc.In Stock: 1095TC86K-1-502 Datasheet

Current PartRFQ

3306K-1-502

Bourns Inc.In Stock: 27253306K-1-502 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC86K-1-502 is determined by strict alignment of the following parameters:

• Resistance value: 5 kOhms (exact match required)
• Resistive material: Cermet (maintains performance characteristics)
• Mounting type: Through Hole (PCB integration compatibility)
• Termination style: PC Pins (soldering interface compatibility)
• Adjustment type: Side Adjustment (mechanical interface compatibility)
• Number of turns: 1 (adjustment range consistency)
• Temperature coefficient: ±250ppm/°C (thermal stability requirement)

The 3306K-1-502 meets these core substitution criteria. Variations in power rating (0.3W vs. 0.2W), tolerance (±20% vs. ±25%), and physical dimensions are secondary considerations that do not prevent functional substitution when circuit design margins accommodate these differences.

Parameter Comparison

Engineering Selection Recommendations

The 3306K-1-502 is the primary substitute for the obsolete TC86K-1-502. Both components are manufactured by Bourns Inc. and share identical core electrical specifications: 5 kOhms resistance, cermet material, 1-turn side adjustment, and ±250ppm/°C temperature coefficient. Both components maintain ROHS3 compliance and unlimited moisture sensitivity rating.

The 3306K-1-502 is currently in active production status, ensuring long-term availability and supply chain continuity. The lower power rating (0.2W vs. 0.3W) and slightly relaxed tolerance (±25% vs. ±20%) require circuit-level verification to confirm compatibility with existing design margins. Physical dimensions differ slightly; PCB layout modifications may be necessary to accommodate the 3306K-1-502 footprint.

Frequently Asked Questions (FAQ)

Q: Can the 3306K-1-502 directly replace the TC86K-1-502 without PCB modification?

A: The 3306K-1-502 shares identical electrical specifications and termination style. Physical dimensions differ (0.303" x 0.268" vs. 0.268" x 0.319"), requiring verification of available PCB space. Pin configuration and spacing must be confirmed before direct substitution.

Q: What is the impact of the lower power rating on the 3306K-1-502?

A: The 3306K-1-502 is rated at 0.2W compared to the TC86K-1-502 at 0.3W. Circuit design must ensure that actual power dissipation does not exceed 0.2W. Applications operating near the original 0.3W specification require thermal analysis and potential circuit redesign.

Q: Does the tolerance difference (±20% vs. ±25%) affect circuit performance?

A: The 3306K-1-502 tolerance of ±25% is wider than the original ±20%. Applications with tight resistance tolerances must evaluate whether the increased tolerance band remains within acceptable performance limits.

Q: Are both components RoHS compliant?

A: Yes, both the TC86K-1-502 and 3306K-1-502 are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), meeting current environmental and reliability standards.

Q: What is the availability status of each component?

A: The TC86K-1-502 is obsolete. The 3306K-1-502 is in active production, providing assured long-term supply availability for new designs and production continuity.