
Functional alternative with better current/DCR but in a smaller 0402 package and wider tolerance.
Finding a substitute for the YL160808-1R0K, a 1.0µH inductor in a 0603 package, requires careful attention to package size and inductance tolerance. While several parts offer similar or better electrical performance, none are a direct drop-in replacement.
All candidates have different package sizes (0402, 0805, 1206) than the 0603 target.
Candidates have weaker inductance tolerance (±20% vs ±10%) which may affect circuit performance.
The identified alternatives are from major manufacturers like TDK and are widely available.
No direct, drop-in replacement was found. All functional alternatives require board layout modifications due to different package sizes.
Search for a 1.0µH inductor in a 0603 package with ±10% or better tolerance and a current rating of at least 25mA.
The primary risk is the physical package mismatch, which prevents a direct drop-in replacement and may require a board redesign.

Functional alternative with better current/DCR but in a smaller 0402 package and wider tolerance.
| Feature / factor | YL160808-1R0K | MLZ1005M1R0WT000 | SLM20121R0MIT | CMP321609UD1R0MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0402 (1005 Metric) | 2012 (0805) | 1206 (3216 Metric) | 0402 (1005 Metric) / 2012 (0805) / 1206 (3216 Metric) — Smaller package requires layout change.; SLM20121R0MIT: Larger package requires layout change.; CMP321609UD1R0MT: Significantly larger package requires board redesign. |
| Inductance | 1.0µH | 1.0µH | 1.0µH | 1.0µH | 1.0µH — matched; SLM20121R0MIT: matched; CMP321609UD1R0MT: matched |
| Current | 25mA | 100mA | 1.0A | 1.2A | 100mA / 1.0A / 1.2A — Higher current handling.; SLM20121R0MIT: Significantly higher current handling.; CMP321609UD1R0MT: Significantly higher current handling. |
| Dcr | 0.6Ω | 0.28Ω | 0.15Ω | 0.15Ω | 0.28Ω / 0.15Ω — Lower DCR improves efficiency.; SLM20121R0MIT: Lower DCR improves efficiency.; CMP321609UD1R0MT: Lower DCR improves efficiency. |
| Tolerance | ±10% | ±20% | ±20% | ±20% | ±20% — Wider tolerance may affect circuit precision.; SLM20121R0MIT: Wider tolerance may affect circuit precision.; CMP321609UD1R0MT: Wider tolerance may affect circuit precision. |
No direct drop-in replacement has been identified. Candidates like TDK's MLZ1005M1R0WT000 offer better electrical specs but in a different (0402) package, requiring board layout verification.