TC86F-1-103 Equivalent & Substitute Parts

Part Overview

The TC86F-1-103 is a 10 kOhm trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® TC86 series. This through-hole component features PC pin termination, cermet resistive material, and 0.3W power rating with top adjustment capability. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

TC86F-1-103

Bourns Inc.In Stock: 782TC86F-1-103 Datasheet

Current PartRFQ

3306F-1-103

Bourns Inc.In Stock: 12443306F-1-103 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 3306F-1-103 qualifies as a substitute for the TC86F-1-103 based on the following alignment of critical parameters:

Matching Parameters:

• Resistance value: 10 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 part) vs. 0.2W/1/5W (substitute) — the substitute has lower power dissipation capacity
• Tolerance: ±20% (main part) vs. ±25% (substitute) — the substitute has wider tolerance
• Physical dimensions: 0.303" x 0.268" (main part) vs. 0.319" x 0.268" (substitute) — minor width difference of 0.016"

Parameter Comparison

Engineering Selection Recommendations

The 3306F-1-103 is suitable as a substitute for the obsolete TC86F-1-103 in applications where the following conditions are met:

Compliance & Availability: The substitute part maintains ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component. The 3306F-1-103 is currently in active production with confirmed inventory availability (1204 pcs), providing supply chain continuity for legacy system support.

Power Dissipation Consideration: The substitute operates at 0.2W maximum power dissipation compared to the original 0.3W rating. Substitution is appropriate only when circuit operating conditions ensure power dissipation does not exceed 0.2W. Applications requiring the full 0.3W capacity require alternative solutions.

Tolerance & Accuracy: The substitute exhibits ±25% tolerance versus the original ±20%. In precision adjustment applications where tighter tolerance is critical, this variation must be evaluated against circuit requirements.

Physical Fit: The substitute is 0.016" wider (0.319" vs. 0.303"), with identical height. PCB layout verification is required to confirm clearance in confined mounting spaces.

Frequently Asked Questions (FAQ)

Q: Can the 3306F-1-103 directly replace the TC86F-1-103 without circuit modification?

A: Direct mechanical and electrical substitution is possible when circuit power dissipation remains below 0.2W and tolerance variation of ±25% is acceptable. Physical clearance verification is required due to the 0.016" width difference.

Q: What is the primary reason for substitution?

A: The TC86F-1-103 is obsolete. The 3306F-1-103 provides functional equivalence with active production status and confirmed availability.

Q: Are there compliance differences between the two parts?

A: No. Both parts maintain identical RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification.

Q: How do tolerance differences affect circuit performance?

A: The TC86F-1-103 tolerance of ±20% versus the 3306F-1-103 tolerance of ±25% represents a 5% wider specification band. Applications requiring precise resistance values must evaluate whether this additional tolerance is acceptable for the intended function.

Q: What is the impact of the 0.2W versus 0.3W power rating difference?

A: The substitute has lower power dissipation capacity. Verify that actual circuit power dissipation does not exceed 0.2W. Exceeding this limit may result in component failure or performance degradation.

Q: Are the PC pin terminations identical?

A: Yes. Both parts use PC pin termination compatible with through-hole PCB mounting. Pin spacing and configuration are equivalent.

Q: What is the moisture sensitivity implication?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage and handling requirements are identical.