MLCC GJM1555C1H4R2WB01D

What is GJM1555C1H4R2WB01D MLCC?

The GJM1555C1H4R2WB01D is an SMD Capacitor manufactured by Murata. Key specs include 4.2 pF capacitance, 50V rating, C0G/NP0 dielectric, and a tight ±0.05pF tolerance in the 0402 package. RoHS compliant, it is designed for precision high‑frequency circuits where minimal drift and ultra‑low loss are critical.

✔ RoHS Compliant  /  ✔ 0402  /  ✔ Murata Quality  /  ✔ Long-Term Supply

Typical Applications & Why This Part Fits

• RF Tuning & Matching Networks: The ±0.05pF tolerance and C0G/NP0 stability ensure precise impedance matching in 2.4 GHz/5 GHz wireless modules, minimizing frequency drift over temperature.
• High‑Frequency Sensor Filters: With 4.2 pF and a self‑resonant frequency above 3 GHz (typical for 0402 C0G), this MLCC works well as a DC‑blocking or coupling capacitor in sensor front‑ends requiring repeatable phase response.
• Oscillator & PLL Loop Filter Trim: The small 0402 footprint combined with a very small capacitance value (4.2 pF) enables fine‑tuning of oscillation frequencies in PLL circuits without adding parasitic inductance.

Key Features & Advantages

• Ultra‑Tight Tolerance (±0.05pF): Guarantees accurate capacitance for critical tuning applications, reducing the need for manual adjustment on the production line.
• C0G/NP0 Dielectric: Provides near‑zero capacitance change over the operating temperature range (−55°C to +125°C) and low dielectric absorption, ideal for timing and filter circuits.
• High Voltage Rating (50V): Supports bias voltages common in RF power amplifiers and base‑station designs while maintaining stability in a compact 0402 body.

Frequently Asked Questions

1. Q: What makes GJM1555C1H4R2WB01D different from a standard 4.2 pF 0402 capacitor?
   A: This Murata part offers a ±0.05pF tolerance (versus typical ±0.25pF or ±0.10pF) and uses a C0G/NP0 formulation that ensures superior temperature stability and low ESR for high‑frequency applications.
2. Q: Is GJM1555C1H4R2WB01D 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. Contact us for flexible MOQ on this Murata MLCC.

Cross Reference & Alternative Sourcing

While GJM1555C1H4R2WB01D is our primary recommendation, comparable alternatives (e.g., GRM1555C1H4R2W series) exist with slightly different tolerances. We provide comprehensive BOM Kitting service to ensure the right Murata MLCC for your design.