MLCC GRM31A5C3A391FWA1D

What is GRM31A5C3A391FWA1D MLCC?

The GRM31A5C3A391FWA1D is a SMD capacitor manufactured by Murata. Key specs include 390PF capacitance, 1KV voltage rating, C0G/NP0 dielectric, 1206 package, and ±1% tolerance. RoHS compliant, it is designed for high-voltage, high-stability applications where precision is critical.

✔ RoHS Compliant  /  ✔ SMD  /  ✔ Murata Quality  /  ✔ Long-Term Supply

Typical Applications & Why This Part Fits

• High-Voltage Power Supplies: The 1KV rating makes it ideal for DC‑link and snubber circuits in switched‑mode power supplies, ensuring reliable operation under high stress.
• Precision Timing & Oscillator Circuits: With C0G/NP0 dielectric and ±1% tolerance, it provides ultra‑stable capacitance over temperature and voltage – essential for oscillator tank circuits and filter networks.
• Industrial & Automotive Sensor Modules: The 1206 footprint and robust 1KV rating suit compact sensor interfaces that must withstand voltage transients without drift.

Key Features & Advantages

• High Voltage Rating (1KV): Enables direct decoupling and filtering in high‑voltage rails, reducing the need for series‑stacked lower‑voltage parts.
• Ultra‑Tight Tolerance (±1%): Guarantees predictable capacitance in feedback loops and resonant circuits, improving system accuracy.
• Stable C0G/NP0 Dielectric: Near‑zero capacitance change with temperature (–55°C to +125°C) and low aging, ensuring long‑term reliability.

Frequently Asked Questions

1. Q: What makes GRM31A5C3A391FWA1D different from a standard MLCC?
   A: This part combines a 1KV voltage rating with C0G/NP0 stability and ±1% tolerance – a rare performance mix that standard X7R or lower‑voltage parts cannot match.
2. Q: Is GRM31A5C3A391FWA1D RoHS compliant?
   A: Yes, as a Murata product, it is standardly RoHS compliant and lead‑free.
3. Q: What is the MOQ? Can we get small batches?
   A: We support small batch orders and full BOM kitting at SZYY, including fast prototyping supply and flexible MOQ to accommodate both R&D and production needs.

Cross Reference & Alternative Sourcing

While GRM31A5C3A391FWA1D is our primary recommendation, comparable alternatives are available. We provide comprehensive BOM Kitting service to cover all your passive component needs.