
TAIYO YUDEN
Functional alternative from Taiyo Yuden with matching inductance in a larger 6045 package.
The DDY WI0603LD470KST-HF is a 47µH wire-wound chip inductor in a compact 0603 package. While no direct pin-compatible replacements have been identified, several functional alternatives exist with superior electrical performance in larger packages, suitable for new designs or board revisions.
No candidates match the 0603 package, requiring a board redesign.
Alternatives have matching inductance and superior current/DCR ratings, but SRF and Isat must be verified.
Multiple functional alternatives are available from different manufacturers.
No direct, drop-in replacement for WI0603LD470KST-HF has been found. All candidates require a board layout change due to different package sizes.
For new designs, select a functional alternative like NR6045T470M based on space and current needs. For existing boards, a redesign is required.
The main risk is the package mismatch. The target is a tiny 0603 SMD, while all functional alternatives are significantly larger.

TAIYO YUDEN
Functional alternative from Taiyo Yuden with matching inductance in a larger 6045 package.
| Feature / factor | WI0603LD470KST-HF | NR6045T470M | PSPHAQ127-470M | SLH0704S470MTT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 (1608 Metric) | 6045 | SMD, 12x12mm | 7.3 mm x 7.3 mm | 6045 / SMD, 12x12mm / 7.3 mm x 7.3 mm / Horizontal Toroidal — Significantly larger footprint than target 0603.; PSPHAQ127-470M: Significantly larger footprint than target 0603.; SLH0704S470MTT: Significantly larger footprint than target 0603.; SLT050125T470MUB: Candidate is Through-Hole, target is 0603 SMD. |
| Inductance | 47 µH | 47 µH | 47 µH | 47 µH | 47 µH — matched; PSPHAQ127-470M: matched; SLH0704S470MTT: matched; SLT050125T470MUB: matched |
| Current | 100 mA | 1.3 A | 3.2 A | 1.0 A | 1.3 A / 3.2 A / 1.0 A / 3.5 A — Significantly higher current rating.; PSPHAQ127-470M: Significantly higher current rating.; SLH0704S470MTT: Significantly higher current rating.; SLT050125T470MUB: Significantly higher current rating. |
| Dcr | 12.0 Ω | 211 mΩ | 100 mΩ | 266 mΩ | 211 mΩ / 100 mΩ / 266 mΩ / 38 mΩ — Significantly lower DC resistance.; PSPHAQ127-470M: Significantly lower DC resistance.; SLH0704S470MTT: Significantly lower DC resistance.; SLT050125T470MUB: Significantly lower DC resistance. |
| Application | N/A | - | AEC-Q200 | - | AEC-Q200 — Candidate is automotive qualified. |
No direct drop-in replacement is available. For new designs, parts like Sunltech's SLH0704S470MTT or Taiyo Yuden's NR6045T470M offer the same inductance with much higher current ratings, but in larger packages requiring a new PCB layout.