MLCC GRM31CR72E333KW03L

What is GRM31CR72E333KW03L MLCC?

The GRM31CR72E333KW03L is a high-voltage SMD capacitor manufactured by Murata (村田). Key specs include 0.033µF capacitance, 250V DC rating, X7R dielectric, 1206 footprint, and ±10% tolerance. RoHS compliant, it is designed for stable filtering and decoupling in demanding power circuits.

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

Typical Applications & Why This Part Fits

• DC-DC Converter Snubber Networks: The 250V rating and X7R stability ensure reliable damping of voltage spikes in intermediate bus converters operating from 48V to 100V rails.
• Industrial Power Supply Output Filtering: 0.033µF at 250V provides sufficient high-frequency noise attenuation while maintaining a compact 1206 layout for space-constrained PSU designs.
• LED Lighting Drivers for High-Voltage Strings: The X7R dielectric delivers minimal capacitance shift over -55°C to +125°C, critical for consistent EMI filtering in outdoor lighting with wide thermal swings.

Key Features & Advantages

• 250V DC Rating in 1206 Case: Enables direct decoupling on high-voltage rails without requiring series stacking, saving board space and reducing component count.
• X7R Dielectric with ±15% Cap Change: Provides predictable capacitance over temperature and voltage bias, ensuring filter cutoff frequencies remain stable under load.
• Murata’s Tight Process Control: Guarantees ±10% tolerance and low defect rate (<5 ppm), reducing rework and improving first-pass yield in automated assembly.

Frequently Asked Questions

1. Q: What makes GRM31CR72E333KW03L different from a standard 1206 X7R capacitor?
   A: Its 250V voltage rating is significantly higher than typical 50V or 100V X7R 1206 parts, allowing direct use on 150–200V DC bus lines without derating concerns.
2. Q: Is GRM31CR72E333KW03L RoHS compliant?
   A: Yes, as a Murata product, it is standardly RoHS compliant and lead-free, with a tin-plated termination finish.
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 with flexible quantities for pre-production runs.

Cross Reference & Alternative Sourcing

While GRM31CR72E333KW03L is our primary recommendation, comparable alternatives are available. We provide comprehensive BOM Kitting service.