TC86W-1-504 Equivalent & Substitute Parts

Part Overview

The TC86W-1-504 is a 500 kOhms trimmer potentiometer manufactured by Bourns Inc., part of the Trimpot® TC86 series. This through-hole component features PC pin termination, side adjustment, and a 0.3W power rating with cermet resistive material. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

TC86W-1-504

Bourns Inc.In Stock: 846TC86W-1-504 Datasheet

Current PartRFQ

3306W-1-504

Bourns Inc.In Stock: 32093306W-1-504 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 3306W-1-504 qualifies as a substitute for the TC86W-1-504 based on the following matching parameters:

• Resistance value: 500 kOhms (identical)
• Temperature coefficient: ±250ppm/°C (identical)
• Number of turns: 1 (identical)
• Adjustment type: Side Adjustment (identical)
• Resistive material: Cermet (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pins (identical)
• RoHS compliance: ROHS3 Compliant (identical)
• MSL rating: 1 (Unlimited) (identical)

The 3306W-1-504 represents an active product from the Trimpot® 3306 series, providing continuity for applications requiring 500 kOhms trimmer potentiometers with side adjustment and PC pin termination.

Parameter Comparison

Engineering Selection Recommendations

The 3306W-1-504 is an active substitute for the obsolete TC86W-1-504. Both components are manufactured by Bourns Inc. and maintain identical electrical specifications for resistance, temperature coefficient, and adjustment characteristics. Both are ROHS3 compliant and carry MSL rating 1.

Key considerations for substitution:

• Power rating difference: The 3306W-1-504 operates at 0.2W versus the TC86W-1-504 at 0.3W. Applications operating below 0.2W are fully compatible.
• Tolerance variance: The 3306W-1-504 carries ±25% tolerance versus ±20% for the original. Applications with tolerance requirements tighter than ±25% require evaluation.
• Physical dimensions: The 3306W-1-504 measures 0.268" x 0.319" versus 0.303" x 0.268" for the TC86W-1-504. PCB layout verification is necessary to confirm fit within available space.

Frequently Asked Questions (FAQ)

Q: Can the 3306W-1-504 directly replace the TC86W-1-504 in all applications?

A: Direct replacement is possible when application power dissipation does not exceed 0.2W and tolerance requirements do not exceed ±25%. Physical dimensions differ slightly; PCB layout must accommodate the 3306W-1-504 footprint.

Q: What is the significance of the power rating difference between 0.3W and 0.2W?

A: Power rating indicates maximum continuous power dissipation. The 3306W-1-504 at 0.2W is suitable for applications dissipating up to 0.2W. Applications requiring the full 0.3W capability of the original part require alternative solutions.

Q: How do tolerance differences affect circuit performance?

A: The TC86W-1-504 specifies ±20% tolerance while the 3306W-1-504 specifies ±25%. Applications with tighter tolerance requirements must evaluate whether the wider tolerance of the substitute meets functional specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the TC86W-1-504 and 3306W-1-504 are ROHS3 compliant and carry identical MSL rating 1 (Unlimited).

Q: What packaging considerations apply to the 3306W-1-504?

A: The 3306W-1-504 is supplied in bulk packaging. Physical dimensions are 0.268" x 0.319" (6.81mm x 8.10mm), requiring verification against PCB layout constraints of the original 0.303" x 0.268" (7.70mm x 6.80mm) component.