For procurement teams sourcing electronic components, two categories demand constant attention: microcontrollers (MCUs) and power MOSFETs. They're everywhere — from automotive ECUs to industrial motor drives to consumer power supplies.
Here's a detailed breakdown of what we're seeing across the market right now, with practical sourcing recommendations for each segment.
MCUs: Mixed Picture by Architecture
The MCU landscape defies generalization. Availability varies dramatically by architecture, grade, and density.
Arm Cortex-M MCUs (STM32, GD32, NXP LPC)
| Series | Lead Time Trend | Sourcing Recommendation |
|---|---|---|
| STM32F0/F1 (entry-level) | 8-12 weeks, easing | Good availability; competitive pricing |
| STM32F4/F7 (high-performance) | 10-14 weeks | Spot available; plan 2-3 weeks buffer |
| STM32G4 (mixed-signal) | 12-16 weeks | Limited spot; engage early |
| STM32H7 (flagship) | 14-20 weeks | Tight allocation; cross-reference alternatives |
| GD32 (GD32F3/F4 series) | 6-10 weeks | Strong availability; viable second source |
| NXP LPC series | 8-14 weeks | Improving; check specific variants |
Sourcing takeaway: STM32F4 series remains the sweet spot — adequate supply with competitive pricing. For high-density automotive or secure variants, early engagement is essential.
Check STM32F407VGT6 availability →
8-bit & 16-bit MCUs (AVR, PIC, 8051)
This segment shows the strongest normalization in the entire MCU market:
- Lead times: generally 4-8 weeks across most vendors
- Multiple second-source options available
- Ideal for new designs where 8/16-bit performance is sufficient
RISC-V MCUs
The emerging alternative is gaining traction, particularly from Chinese manufacturers:
- Lead times: generally favorable (6-10 weeks)
- Strong price competitiveness vs. equivalent Arm solutions
- Caveat: Long-term availability data and qualification documentation are still maturing — factor this into your risk assessment
Power MOSFETs: Steady but Segmented
The MOSFET market is driven by voltage grade more than any other factor.
Low-Voltage MOSFETs (< 100V)
| Package | Lead Time | Availability |
|---|---|---|
| SOT-23 | 4-8 weeks | Widely available |
| PDFN / DFN | 6-10 weeks | Good |
| TO-252 (DPAK) | 6-10 weeks | Good |
| SO-8 dual | 4-8 weeks | Excellent |
This segment is the most commoditized — supply is generally healthy across all major vendors (Infineon, ON Semi, Vishay, ST).
Medium-Voltage MOSFETs (100V-250V)
Supply has improved but remains variable by package and grade:
- Industrial-grade: 8-12 weeks (improving)
- Automotive-qualified: 14-20 weeks (constrained)
- Super-junction variants: 12-18 weeks (tight)
View our MJD series power transistors →
High-Voltage MOSFETs (> 500V) & Super Junction
This remains the tightest segment in the discrete power market:
- Strong demand drivers: EV charging infrastructure, industrial power conversion, renewable energy inverters
- Lead times: 16-26+ weeks for certain voltage/package combinations
- Key affected series: STW12NK90Z, Infineon CoolMOS CFD7, certain SiC MOSFETs
Sourcing strategy: High-voltage MOSFETs require the most forward planning. Maintaining buffer stock and qualifying second sources is strongly recommended.
Key Takeaways for Procurement Teams
- Don't treat MCUs as a single category — architecture, grade, and density dramatically affect availability. Cross-reference across families where possible.
- MOSFET sourcing complexity is driven by voltage grade — more than vendor or package. Low-voltage is accessible; high-voltage requires forward planning.
- Second sources are worth evaluating now while mainstream supply is accessible. Lead times can tighten quickly when allocation patterns shift.
- Automotive-grade always commands a premium — both in lead time and price. Engage early and maintain buffer stock for production continuity.
- Spot market access matters — even with improving lead times, production emergencies happen. Having relationships with distributors who carry spot inventory can save production lines.
Quick Reference: Current Lead Time Ranges
| Category | Lead Time Range | Trend |
|---|---|---|
| Entry-level MCUs (STM32F0, GD32) | 6-12 weeks | ↓ Easing |
| High-performance MCUs (STM32F4/F7) | 10-14 weeks | → Stable |
| Automotive MCUs | 16-26+ weeks | ↑ Tight |
| Low-voltage MOSFETs (< 100V) | 4-10 weeks | ↓ Easing |
| High-voltage MOSFETs (> 500V) | 16-26+ weeks | ↑ Tight |
| SiC MOSFETs | 20-30+ weeks | ↑ Very Tight |
Need specific component availability? Submit your BOM for a 4-hour response →
Lead time data reflects aggregated market intelligence as of May 2026. Individual component availability may vary. Always verify lead times with your specific distributor.
