3313J-1-103E
BOURNS
Needs validationmedium risk
A 3mm SMD trimmer with same resistance and better tolerance, but a slightly lower power rating.
Best Alternatives to TC33X-1-103E
The Bourns TC33X-1-103E is a popular 10kΩ, 3mm single-turn SMD trimming potentiometer. Finding a substitute requires matching resistance, power rating, and the 3mm surface-mount package.
AI replacement insight
Package riskhigh
Most candidates have different packages or mounting types.
Electrical riskmedium
One close candidate has a lower power rating.
Can it be replaced directly?
No direct pin-for-pin replacement has been identified. The closest candidates have different packages or weaker electrical parameters requiring engineering review.
Best replacement path
The closest option is 3313J-1-103E, but its lower power rating must be verified. For a more robust option, 3314G-1-103E offers better specs but requires a land pattern check.
Main risk
The primary risks are package/footprint mismatch and power derating. No candidate is a direct drop-in replacement.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | TC33X-1-103E | 3313J-1-103E | 3314G-1-103E | 3386P-1-103LF | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 10kΩ | 10kΩ | 10kΩ | 10kΩ | 10kΩ — Matches target resistance.; 3314G-1-103E: Matches target resistance.; 3386P-1-103LF: Matches target resistance.; 3266W-1-103LF: Matches target resistance. |
| Power | 0.15W | 0.125W | 0.25W | 0.5W | 0.125W / 0.25W / 0.5W — Lower power rating requires circuit analysis.; 3314G-1-103E: Higher power rating is an upgrade.; 3386P-1-103LF: Higher power rating is generally safe.; 3266W-1-103LF: Higher power rating is an upgrade. |
| Tolerance | ±25% | ±20% | ±20% | ±10% | ±20% / ±10% — Tighter tolerance is an improvement.; 3314G-1-103E: Tighter tolerance is an improvement.; 3386P-1-103LF: Tighter tolerance is an improvement. |
| Package | 3 mm SMD | 3 mm Square | 4mm Square | 3/8" Square, Through-Hole | 3 mm Square / 4mm Square / 3/8" Square, Through-Hole / 1/4" Square, Through-Hole — Package size matches, footprint should be verified.; 3314G-1-103E: Larger package requires footprint verification.; 3386P-1-103LF: Requires different PCB layout.; 3266W-1-103LF: Requires different PCB layout. |
| Application | Single-turn | - | - | - | Multi-turn (12) — Different adjustment mechanism. |
Application & sourcing insights
Questions & answers
Bourns 3313J-1-103E is functionally similar but has a lower power rating (0.125W vs 0.15W), which must be verified for your application. Other options require PCB layout changes.