What is GRM31A5C2J390JW01D MLCC?
The GRM31A5C2J390JW01D is a high-voltage SMD capacitor manufactured by Murata (村田). Key specs include 39 pF capacitance, 630 VDC rating, C0G/NP0 dielectric, 1206 package, and ±5% tolerance. RoHS compliant, it is designed for stable, low-loss filtering in medium-power circuits.
✔ RoHS Compliant / ✔ SMD / ✔ Murata Quality / ✔ Long-Term Supply
Typical Applications & Why This Part Fits
- DC‑DC Converter Snubbers: The 630 V rating and C0G stability make this 39 pF capacitor ideal for suppressing ringing in high‑frequency switching nodes.
- RF Coupling / Decoupling: Its ±5% tolerance and NP0 dielectric ensure consistent impedance and minimal drift over temperature, critical for precision RF paths.
- High‑Voltage Sensor Interfaces: The 1206 footprint handles the voltage stress and provides reliable isolation in industrial sensing circuits.
Key Features & Advantages
- Extreme Voltage Margin: Rated at 630 V, it offers more than double the typical 250 V or 500 V parts, reducing derating concerns.
- Ultra‑Stable Dielectric: C0G/NP0 yields virtually zero capacitance change with temperature (±30 ppm/°C) and voltage, ensuring predictable performance.
- Compact 1206 Package: Balances size and power handling, suitable for dense PCB layouts without sacrificing voltage capability.
Frequently Asked Questions
- Q: What makes GRM31A5C2J390JW01D different from a standard 39 pF capacitor?
A: Its 630 VDC rating and C0G dielectric allow it to withstand much higher voltages and deliver superior temperature stability compared to typical X7R or lower‑voltage NP0 parts. - Q: Is GRM31A5C2J390JW01D RoHS compliant?
A: Yes, as a Murata product, it is standardly RoHS compliant and lead‑free. - 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.
Cross Reference & Alternative Sourcing
While GRM31A5C2J390JW01D is our primary recommendation, comparable alternatives are available. We provide comprehensive BOM Kitting service.
SZYY (Shenzhen Yuanyue Electronic Technology Co., Ltd.) is an independent electronic components distributor based in Shenzhen, China. We specialize in BOM kitting and global component supply, offering genuine, traceable parts with extensive inventory and fast shipping. We also provide PCBA coordination services through our trusted EMS partners — helping you achieve a true one-stop experience from BOM to finished PCBA.
📍 Room 19E, Block B, Guangbo Modern Window Building, Shennan Middle Road, Futian District, Shenzhen, Guangdong, China
📞 Mr. Chen: +86 13670242188 / ✉️ SZYY@SZYY.LTD / 🌐 https://szyy.ltd