TC86W-1-105 Equivalent & Substitute Parts

Part Overview

The TC86W-1-105 is a 1 MOhm, 0.3W through-hole trimmer potentiometer manufactured by Bourns Inc. as part of the Trimpot® TC86 series. This component features cermet resistive material, side adjustment capability, and PC pin termination for through-hole mounting applications. The TC86W-1-105 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

TC86W-1-105

Bourns Inc.In Stock: 765TC86W-1-105 Datasheet

Current PartRFQ

3306W-1-105

Bourns Inc.In Stock: 52133306W-1-105 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC86W-1-105 is based on the following critical parameters that must remain consistent:

• Resistance value: 1 MOhms (exact match required)
• Adjustment type: Side Adjustment (functional requirement)
• Resistive material: Cermet (performance characteristic)
• Mounting type: Through Hole (mechanical requirement)
• Termination style: PC Pins (board interface requirement)
• Temperature coefficient: ±250ppm/°C (thermal stability)
• Number of turns: 1 (adjustment range)

The 3306W-1-105 meets these core substitution criteria. Variations in power rating (0.3W vs. 0.2W), tolerance (±20% vs. ±25%), and physical dimensions are secondary parameters that may be accommodated depending on circuit design margins and available board space.

Parameter Comparison

Engineering Selection Recommendations

The 3306W-1-105 is the primary substitute for the obsolete TC86W-1-105. Both components are manufactured by Bourns Inc. and share identical core electrical specifications: 1 MOhm resistance, ±250ppm/°C temperature coefficient, 1-turn side adjustment, cermet construction, and PC pin through-hole termination.

The 3306W-1-105 is currently in active production status with substantial inventory availability (5116 pcs), whereas the TC86W-1-105 is obsolete. Both components maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Design considerations for substitution:

Power rating differential: The 3306W-1-105 is rated at 0.2W compared to the TC86W-1-105 at 0.3W. Circuit designs operating below 0.2W dissipation are fully compatible. Applications requiring power dissipation between 0.2W and 0.3W require thermal analysis to confirm the substitute component operates within safe limits.

Tolerance variance: The 3306W-1-105 tolerance of ±25% is wider than the TC86W-1-105 tolerance of ±20%. Circuit designs with tolerance budgets accommodating ±25% variation are suitable for direct substitution.

Physical dimensions: The 3306W-1-105 footprint (0.268" x 0.319") differs slightly from the TC86W-1-105 (0.303" x 0.268"). PCB layout verification is required to confirm available mounting space.

Frequently Asked Questions (FAQ)

Q: Can the 3306W-1-105 directly replace the TC86W-1-105 in existing designs?

A: Direct substitution is possible when circuit power dissipation does not exceed 0.2W and tolerance requirements accommodate ±25% variation. Physical dimensions differ slightly; PCB layout verification is necessary.

Q: What is the primary reason for seeking a substitute for the TC86W-1-105?

A: The TC86W-1-105 is classified as obsolete. The 3306W-1-105 provides functional equivalence with active production status and reliable supply availability.

Q: Are there electrical performance differences between these components?

A: Both components share identical resistance value (1 MOhm), temperature coefficient (±250ppm/°C), and adjustment characteristics (1-turn side adjustment, cermet material). The 3306W-1-105 has a lower power rating (0.2W vs. 0.3W) and wider tolerance (±25% vs. ±20%).

Q: Do both components meet the same compliance standards?

A: Yes. Both the TC86W-1-105 and 3306W-1-105 are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.

Q: What mounting considerations apply to the 3306W-1-105?

A: The 3306W-1-105 uses identical through-hole PC pin termination as the TC86W-1-105. Physical dimensions are slightly different; confirm PCB hole spacing and available board area accommodate the 0.268" x 0.319" footprint.

Q: Is the 3306W-1-105 currently available?

A: Yes. The 3306W-1-105 is in active production status with 5116 pcs in current inventory.