TC86P-1-104 Equivalent & Substitute Parts

Part Overview

The TC86P-1-104 is a through-hole trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® TC86 series. This component is a 100 kOhms, 0.3W cermet trimmer with PC pin termination and top adjustment capability. The TC86P-1-104 is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and production continuity. Equivalent parts must maintain the same resistance value, adjustment type, mounting configuration, and core electrical characteristics to ensure functional compatibility in existing circuit designs.

Substiute Parts

TC86P-1-104

Bourns Inc.In Stock: 980TC86P-1-104 Datasheet

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3306P-1-104

Bourns Inc.In Stock: 51903306P-1-104 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC86P-1-104 is based on the following critical parameters that must remain constant or compatible:

• Resistance value: 100 kOhms (exact match required)
• Adjustment type: Top Adjustment (functional requirement)
• Mounting type: Through Hole with PC Pins (PCB compatibility)
• Resistive material: Cermet (performance and stability characteristics)
• Number of turns: 1 (adjustment range and resolution)
• Temperature coefficient: ±250ppm/°C (thermal stability)

The 3306P-1-104 qualifies as a substitute based on matching all critical parameters. While the 3306P series offers a lower power rating (0.2W versus 0.3W) and slightly different tolerance (±25% versus ±20%), these variations remain within acceptable substitution criteria for applications where the TC86P-1-104 was specified. The 3306P-1-104 is an active product with current manufacturing support, providing improved availability compared to the obsolete TC86P-1-104.

Parameter Comparison

Engineering Selection Recommendations

The 3306P-1-104 is the qualified substitute for the obsolete TC86P-1-104. Both components are manufactured by Bourns Inc. and maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current production environments.

The 3306P-1-104 is an active product with established supply chain availability (5122 pcs in stock versus 893 pcs for the obsolete TC86P-1-104). Selection of the 3306P-1-104 eliminates obsolescence risk and provides long-term component availability for production and field service applications.

The minor dimensional difference (0.319" versus 0.303" width) must be evaluated against PCB layout constraints. Both components maintain identical height (0.268") and identical PC pin termination, minimizing mechanical redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3306P-1-104 be used as a direct replacement for the TC86P-1-104?

A: Yes. Both components share identical resistance (100 kOhms), adjustment type (top adjustment), mounting configuration (through-hole PC pins), and thermal characteristics (±250ppm/°C). The 3306P-1-104 is functionally compatible for applications where the TC86P-1-104 was originally specified.

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

A: The TC86P-1-104 is rated at 0.3W while the 3306P-1-104 is rated at 0.2W. Applications operating at or below 0.2W dissipation will experience no functional impact. Applications requiring power dissipation between 0.2W and 0.3W must be evaluated against actual circuit conditions to confirm the lower rating remains acceptable.

Q: Does the tolerance difference (±20% versus ±25%) affect substitution?

A: The 3306P-1-104 has a wider tolerance (±25%) compared to the TC86P-1-104 (±20%). Applications with strict resistance tolerance requirements must evaluate whether the ±25% tolerance of the 3306P-1-104 remains within acceptable circuit performance parameters.

Q: Are there dimensional compatibility concerns?

A: The 3306P-1-104 is 0.016" (0.4mm) wider than the TC86P-1-104 (0.319" versus 0.303"). PCB layouts must be verified to confirm adequate clearance for the slightly larger width. Height and pin configuration remain identical.

Q: What is the availability status of each component?

A: The TC86P-1-104 is obsolete with limited remaining inventory (893 pcs). The 3306P-1-104 is an active product with established supply chain support (5122 pcs in stock). New designs should specify the 3306P-1-104 to ensure long-term availability.