| Manufacturer | Part Number | Description |
|---|---|---|
| Shenchuanghui Electronics | SP2638F | Primary side control constant current / constant voltage AC / DC control circuit |
| Shenchuanghui Electronics | SP5718AP | High precision primary side feedback switching power supply chip |
| Shenchuanghui Electronics | SP5318F | Single-stage PFC non-isolated step-down LED lighting conversion circuit |
