MLCC GRM31A7U3A151JW31D

What is GRM31A7U3A151JW31D MLCC?

The GRM31A7U3A151JW31D is a high-voltage SMD capacitor manufactured by Murata. Key specs include 150 pF capacitance, 1 kV rated voltage, U2J dielectric, 1206 case size, and ±5% tolerance. RoHS compliant, it is designed for stable performance in demanding circuits.

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

Typical Applications & Why This Part Fits

• DC-DC Converter Snubbers: The 1 kV rating and low 150 pF value provide effective ringing suppression while minimizing power loss in high-voltage power stages.
• High-Impedance Coupling: U2J dielectric ensures minimal capacitance change with DC bias, making it ideal for RF coupling and filter circuits requiring stable 150 pF at up to 1 kV.
• Automotive On-Board Charger Filtering: 1206 footprint and ±5% tolerance allow precise EMI filtering in compact, high-reliability traction inverter modules.

Key Features & Advantages

• High Voltage with Small Value: 150 pF / 1 kV combination fits niche decoupling needs where low capacitance but high breakdown strength is critical.
• Stable U2J Dielectric: Low aging and nearly flat capacitance vs. DC bias ensure consistent performance across operating voltage ranges.
• Tight ±5% Tolerance: Enables precise frequency response in resonant circuits and timing applications without over-designing margins.

Frequently Asked Questions

1. Q: What makes GRM31A7U3A151JW31D different from a standard 1206 MLCC?
   A: Its 1 kV rating in a standard 1206 size, combined with 150 pF and ±5% tolerance, is uncommon — most 1206 capacitors at this voltage offer higher capacitance. This part addresses specific transient immunity needs.
2. Q: Is GRM31A7U3A151JW31D 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 for this 150 pF 1 kV part.

Cross Reference & Alternative Sourcing

While GRM31A7U3A151JW31D is our primary recommendation, comparable alternatives are available. We provide comprehensive BOM Kitting service.