MLCC GRM31A5C3A101FW01D

What is GRM31A5C3A101FW01D MLCC?

The GRM31A5C3A101FW01D is a multilayer ceramic capacitor (MLCC) manufactured by Murata. Key specs include 100pF capacitance, 1000V voltage rating, C0G dielectric, 1206 case size, and ±1% tolerance. RoHS compliant, it is designed for high-voltage precision filtering and timing circuits where capacitance stability over temperature and bias voltage is critical.

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

Typical Applications & Why This Part Fits

• High-Voltage DC-DC Converters: The 1000V rating combined with C0G dielectric ensures minimal capacitance loss under high bias, making it ideal for snubber or feedback networks in 48V bus converters and industrial power modules.
• RF & Impedance Matching Networks: With ±1% tolerance and ultra-stable C0G characteristics, this 100pF capacitor provides repeatable, low-drift performance in VCO tank circuits, filter stages, and antenna matching for base station equipment.
• Automotive On-Board Charger (OBC) Sensors: The 1206 footprint and 1000V withstand capability suit isolated voltage sensing dividers and EMI suppression loops in EV charging infrastructure where reliability under high stress is mandatory.

Key Features & Advantages

• Tight ±1% Tolerance: Guarantees consistent nominal capacitance per batch, reducing tuning effort in precision analog and RF designs while lowering production test fall-out.
• C0G (NP0) Dielectric: Offers negligible capacitance change over temperature (-55°C to +125°C) and virtually no voltage coefficient, enabling predictable circuit behavior across all operating conditions.
• High 1000V Voltage Rating: Provides a robust safety margin in 400V–600V DC-link and snubber applications, minimizing derating complexity and improving long-term reliability.

Frequently Asked Questions

1. Q: What makes GRM31A5C3A101FW01D different from a standard MLCC?
   A: Its combination of 1000V rating, C0G stability, and ±1% precision in a 1206 package is uncommon — most high-voltage C0G parts offer only ±5% or ±10% tolerance. This tight tolerance eliminates the need for tuning in sensitive circuits.
2. Q: Is GRM31A5C3A101FW01D 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 quantity splits for engineering builds.

Cross Reference & Alternative Sourcing

While GRM31A5C3A101FW01D is our primary recommendation, comparable alternatives are available. We provide comprehensive BOM Kitting service.