What is GRM21A7U2E121JW31D MLCC?
The GRM21A7U2E121JW31D is a multilayer ceramic capacitor (MLCC) manufactured by Murata. Key specs include 120pF capacitance, 250V voltage rating, U2J dielectric, 0805 package, and ±5% tolerance. RoHS compliant, it is designed for high-voltage decoupling and filtering in compact circuits.
✔ RoHS Compliant / ✔ 0805 Package / ✔ Murata Quality / ✔ Long-Term Supply
Typical Applications & Why This Part Fits
- Power Supply Input Filtering: The 250V rating ensures reliable operation in DC-DC converters and PFC stages where voltage spikes exceed 100V.
- Industrial Snubber Circuits: U2J dielectric offers low capacitance change over temperature and voltage, making it ideal for damping transient overshoots in motor drives.
- High-Voltage RF Coupling: With 120pF and tight ±5% tolerance, this MLCC provides stable coupling in telecom base station amplifiers up to 250V.
Key Features & Advantages
- 250V Rating in 0805: Saves board space compared to larger packages while handling power rail stresses.
- U2J Dielectric: Class 1 stability with nearly flat capacitance vs. voltage and temperature (Δ ≤ ±10% over -55°C to +125°C).
- ±5% Tolerance: Ensures precise timing constants and filter cutoff frequencies without derating.
Frequently Asked Questions
- Q: What makes GRM21A7U2E121JW31D different from a standard 0805 120pF MLCC?
A: Most standard 0805 MLCCs are rated at 50V or 100V; this Murata part provides 250V with U2J dielectric, offering higher breakdown margin and superior stability. - Q: Is GRM21A7U2E121JW31D 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 GRM21A7U2E121JW31D is our primary recommendation, comparable alternatives from other reputable brands exist. We provide comprehensive BOM Kitting service to ensure seamless supply chain integration.
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