Infineon/ST Power Device (MOSFET/IGBT) Replacement Plan
IRF840 / IRFP460 / IKW40N120 → Silan SVF/SGL, CR Micro CRJ, NCE — full high-voltage MOS and IGBT coverage, domestic lead 4–8 weeks, cost advantage 8–14:1 (quote for latest pricing).
Application Scenario
For designs using Infineon/ST power MOSFET/IGBT (SMPS, inverters, servo drives, EV charging, UPS). Structural shortage persists (IGBT 26–52 wks, SiC 52 wks+), Infineon raised prices 15–40%; domestic supply security is the key driver.
System Diagram Placeholder
Placeholder: bus power → power switch (Silan SVF/SGL, CR Micro CRJ, NCE) → gate driver → load. Verify gate drive params (Qg/Qgd). Full schematic in preparation — contact us.
Replacement Matrix
| Original | Replacement | Quote | Savings |
|---|---|---|---|
| IRF840 (650V/8A, Infineon) | SVF7N65F (Silan) | Quote | ~ 14:1 |
| IRFP460 (500V/20A, Infineon) | SVF20N50F (Silan) | Quote | ~ 12:1 |
| IRF3205 (55V/110A, Infineon) | CRJM070N04N (CR Micro) | Quote | ~ 8:1 |
| IRFZ44N (55V/49A, Infineon) | NCE3080K (NCE Power) | Quote | ~ 10:1 |
| IKW40N120 (1200V/40A, Infineon) | SGL40N120 (Silan) | Quote | ~ 14:1 |
| IKW75N60 (600V/75A, Infineon) | SGL60N120 (Silan) | Quote | ~ 12:1 |
| FGA25N120 (1200V/25A, ST) | NCE25N120T (NCE Power) | Quote | ~ 10:1 |
Core Components
- Silan SVF7N65F/SVF20N50F — HV N-MOSFET, 650V/7A, 500V/20A, TO-220F
- Silan SGL40N120/SGL60N120 — IGBT, 1200V/40A, 60A, TO-247
- CR Micro CRJM070N04N/CRJS045N10N — low/medium-voltage N-MOSFET, 40V/70A, 100V/45A
- NCE Power NCE3080K/NCE25N120T — medium-voltage MOS and IGBT combo
BOM Notes
- Verify gate drive params (Qg/Qgd); IGBT Vge(th) difference may affect driver circuit
- Confirm TO-220/TO-247 package fit; thermal testing for high-current parts
- Pilot-verify before batch switch; domestic power up ~10% — earlier locking is cheaper
Conclusion & Recommendation
Silan/CR Micro/NCE offer 4–8 week lead with ample capacity, 8–14:1 cost advantage. Domestic power up ~10% — motivation shifts from cost to supply security. Validate and switch within 1–3 months; lock long-term orders.
📌 Source: Compiled from official sites and public channels (2026-08-24): Silan/CR Micro/NCE product pages, Infineon product page, LCSC stock, public pricing.