TC86F-1-102 Equivalent & Substitute Parts

Part Overview

The TC86F-1-102 is a 1 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 0.3W power rating and ±20% tolerance. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

TC86F-1-102

Bourns Inc.In Stock: 1089TC86F-1-102 Datasheet

Current PartRFQ

3306F-1-102

Bourns Inc.In Stock: 123083306F-1-102 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 3306F-1-102 qualifies as a substitute for the TC86F-1-102 based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Resistance value: 1 kOhms (identical)
• Temperature coefficient: ±250ppm/°C (identical)
• Number of turns: 1 (identical)
• Adjustment type: Top Adjustment (identical)
• Resistive material: Cermet (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pins (identical)
• RoHS compliance: ROHS3 Compliant (identical)
• Moisture sensitivity level: 1 (Unlimited) (identical)

Allowable Variations:

• Power rating: 0.3W (main) vs. 0.2W/1/5W (substitute) — the substitute has lower power dissipation capacity
• Tolerance: ±20% (main) vs. ±25% (substitute) — the substitute has wider tolerance
• Physical dimensions: 7.70mm x 6.80mm (main) vs. 8.10mm x 6.80mm (substitute) — minor width difference

The 3306F-1-102 maintains functional equivalence in resistance, temperature stability, and adjustment characteristics while offering active product status and higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The 3306F-1-102 is suitable as a substitute for the obsolete TC86F-1-102 in applications where the following conditions are met:

• Circuit design accommodates the lower 0.2W power dissipation limit of the substitute
• Application tolerates the wider ±25% tolerance specification
• PCB layout permits the 0.4mm increase in component width (8.10mm vs. 7.70mm)
• Both components maintain identical ROHS3 compliance and moisture sensitivity ratings, ensuring regulatory and environmental consistency

The substitute part offers the advantage of active product status with significantly higher inventory availability, reducing supply chain risk for ongoing production and repair operations.

Frequently Asked Questions (FAQ)

Q: Can the 3306F-1-102 directly replace the TC86F-1-102 in existing designs?

A: Direct replacement is possible if the circuit design operates within the 0.2W power dissipation limit and the ±25% tolerance is acceptable. The 0.4mm width difference requires verification of PCB layout clearances.

Q: What is the significance of the power rating difference (0.3W vs. 0.2W)?

A: The substitute has lower maximum power dissipation capacity. Applications requiring continuous operation near 0.3W dissipation must be re-evaluated to ensure the substitute does not exceed thermal limits.

Q: How do the tolerance specifications affect circuit performance?

A: The TC86F-1-102 specifies ±20% tolerance while the 3306F-1-102 specifies ±25%. In precision adjustment applications, the wider tolerance of the substitute may result in greater initial resistance variation and require additional calibration margin.

Q: Are there packaging or mounting differences?

A: Both components use identical through-hole PC pin termination and top adjustment configuration. The primary difference is a 0.4mm increase in face width for the substitute, which must be confirmed against PCB design constraints.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TC86F-1-102 and 3306F-1-102 are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited) ratings.

Q: Why is the 3306F-1-102 recommended despite lower power rating?

A: The substitute offers active product status with 12x higher inventory availability compared to the obsolete TC86F-1-102, reducing procurement risk and lead time for replacement and repair applications.