CY75-220UH
hanxia
Needs validationmedium risk
Balanced alternative with different package (SMD). Requires board redesign and Isat verification.
Best Alternatives to PK0608-221MB
PK0608-221MB is a 220µH radial leaded power inductor. While no direct pin-compatible replacements have been identified, several surface-mount (SMD) functional alternatives exist that may be suitable if a board redesign is feasible.
AI replacement insight
Package riskhigh
Target is through-hole (Radial), all candidates are surface-mount (SMD). Board redesign is required.
Electrical riskmedium
Saturation current (Isat) is unspecified for most candidates and must be verified. DCR also varies.
Can it be replaced directly?
No, a direct, pin-compatible replacement for the PK0608-221MB was not found. All potential alternatives are surface-mount (SMD) devices and require a board layout change from the original through-hole design.
Best replacement path
If a PCB redesign to surface-mount is possible, CY75-220UH offers a balanced profile with slightly improved current and DCR. For a significant upgrade, consider CYH127-220UH.
Main risk
The primary risk is the package mismatch (Radial Leaded vs. SMD), which makes these parts not drop-in compatible and requires a mandatory PCB redesign.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | PK0608-221MB | CY75-220UH | CYH127-220UH | SLH1207S221MTT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Radial Leaded | 7.8x7.0mm (SMD) | 12.5x12.5mm (SMD) | 1207 (SMD) | 7.8x7.0mm (SMD) / 12.5x12.5mm (SMD) / 1207 (SMD) / 4030 (SMD) — Requires board redesign from through-hole to SMD.; CYH127-220UH: Requires board redesign from through-hole to SMD.; SLH1207S221MTT: Requires board redesign from through-hole to SMD.; SWPA4030S221MT: Requires board redesign from through-hole to SMD. |
| Inductance | 220µH | 220µH | 220µH | 220µH | 220µH — matched; CYH127-220UH: matched; SLH1207S221MTT: matched; SWPA4030S221MT: matched |
| Current | 0.44A | 0.48A | 1.16A | 1.16A | 0.48A / 1.16A / 0.5A — Slightly higher rated current (Irms).; CYH127-220UH: Significantly higher rated current (Irms).; SLH1207S221MTT: Significantly higher rated current (Irms).; SWPA4030S221MT: Higher rated current (Irms). |
| Dcr | 0.9Ω | 0.793Ω | 0.299Ω | 0.39Ω | 0.793Ω / 0.299Ω / 0.39Ω / 1.26Ω — Lower DCR improves efficiency.; CYH127-220UH: Significantly lower DCR improves efficiency.; SLH1207S221MTT: Significantly lower DCR improves efficiency.; SWPA4030S221MT: Higher DCR means lower efficiency. |
| Saturation Current | Not specified | Not specified | Not specified | Not specified | Not specified / 0.4A — Saturation current (Isat) is a critical missing parameter.; CYH127-220UH: Saturation current (Isat) is a critical missing parameter.; SLH1207S221MTT: Saturation current (Isat) is a critical missing parameter.; SWPA4030S221MT: Target Isat is unknown; must be verified for application. |
Application & sourcing insights
Questions & answers
The best alternative depends on your design constraints. If you can redesign your PCB for an SMD component, CY75-220UH is a strong candidate with slightly better current and DCR ratings.