Is there a pin-compatible replacement for TC33X-2-503E?

Currently, no pin-for-pin compatible replacement has been verified. Alternatives like the 3224W-1-503E have a different package footprint (4mm vs 3mm) and require a board layout adjustment.

What risks should I check before replacing TC33X-2-503E?

The main risk is the package mismatch. Verify your PCB can accommodate a larger footprint (e.g., 4mm square for 3224W-1-503E). Also, consider the functional change from a single-turn to a multi-turn trimmer, which provides finer adjustment.

TC33X-2-503E Alternatives, Datasheet & Cross Reference | BOURNS

Bourns TC33X-2-503E is a 50kΩ, 3mm single-turn SMD trimmer. Alternatives exist with better electrical specs but may require PCB layout changes due to different package sizes.

AI replacement insight

Electrical risklow

Key candidates offer superior power and tolerance ratings.

Package riskhigh

All viable alternatives require a PCB layout change.

Can it be replaced directly?

No direct pin-for-pin replacement has been identified. All suitable alternatives require a PCB layout modification.

Best replacement path

The Bourns 3224W-1-503E is a strong functional alternative, offering upgraded power and tolerance in a slightly larger 4mm SMD package.

Main risk

The primary risk is mechanical incompatibility. No identified substitutes share the exact 3mm package, requiring a board layout change.

Recommended alternatives

SMD alternative with same resistance, better tolerance and power, but in a slightly larger 4mm package.

View details

Alternative comparison matrix

Feature / factor	TC33X-2-503E	3224W-1-503E	3296W-1-503LF	Compatibility / risk
Resistance	50kΩ	50kΩ	50kΩ	50kΩ — Resistance matches target.; 3296W-1-503LF: Resistance matches target.
Package	3mm SMD	4mm Square SMD	3/8" Square Through-Hole	4mm Square SMD / 3/8" Square Through-Hole — Requires PCB layout change.; 3296W-1-503LF: Requires complete board redesign.
Power	0.15W	0.25W	0.5W	0.25W / 0.5W — Higher power rating is a safe upgrade.; 3296W-1-503LF: Higher power rating is a safe upgrade.
Tolerance	±25%	±10%	±10%	±10% — Tighter tolerance is an upgrade.; 3296W-1-503LF: Tighter tolerance is an upgrade.
Adjustment	Single-turn	12-turn	25-turn	12-turn / 25-turn — Multi-turn offers finer adjustment.; 3296W-1-503LF: Multi-turn offers finer adjustment.

Application & sourcing insights

Questions & answers

The Bourns 3224W-1-503E is a strong functional alternative. It offers the same 50kΩ resistance with better tolerance (±10%) and power (0.25W), but requires a PCB layout change for its 4mm square SMD package.