Ultralibrarian defined some Common Categories of Hard to Find Capacitors
| Capacitor Type | Common Use | Why It’s Hard to Source |
|---|---|---|
| 10µF 25V X7R MLCC (0805) | 1. Decoupling | High MLCC demand across mobile and automotive sectors |
| 2. Power filtering | ||
| High-voltage MLCCs (>100V) | 1. EVs (Electric Vehicles) | Low volume production and fewer vendors |
| 2. Industrial power systems | ||
| Tantalum (e.g., KEMET T491) | 1. Regulated power paths | Tantalum sourcing constraints and stricter export classifications |
| 2. Low ESR (Equivalent Series Resistance) use | ||
| C0G/NP0 Ceramic Capacitors | 1. Precision timing | Tight tolerances, limited substitutes, low supply diversity for temperature range -55°C to +125°C |
| 2. RF (Radio Frequency) applications | ||
| Automotive-grade MLCCs (AEC-Q200) | 1. Harsh environment reliability | Long qualification cycles and vendor prioritization for Tier 1 OEMs (Original Equipment Manufacturers) |