What risks should I check before replacing CGA0402C0G821J500GT?

Before replacing, confirm the dielectric material. The target uses C0G, which is very stable. Using a substitute with a different dielectric like X7R can introduce performance issues, especially in sensitive analog or RF circuits.

CGA0402C0G821J500GT Alternatives, Datasheet & Cross Reference | HRE

CGA0402C0G821J500GT is an 820pF, 50V, 5% C0G ceramic capacitor in a standard 0402 package. Several alternatives exist, with the best options matching the critical C0G dielectric for high-stability applications.

AI replacement insight

Electrical riskhigh

Using a non-C0G dielectric can cause circuit malfunction in timing, filtering, or RF applications.

Package risklow

The 0402 package is a standard size, making physical replacement straightforward.

Can it be replaced directly?

Direct replacement for CGA0402C0G821J500GT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Start with Datasheet verified or Strong match candidates for CGA0402C0G821J500GT, then review parametric alternatives for package and electrical fit.

Main risk

The main risk is substituting with a capacitor that has a different dielectric, such as X7R, which lacks the temperature and voltage stability of C0G.

Recommended alternatives

Yageo CC0402JRNPO9BN821 is a strong pin-compatible match with identical key electrical parameters and package.

View details

Alternative comparison matrix

Feature / factor	CGA0402C0G821J500GT	CC0402JRNPO9BN821	TCC0402X7R821K500AT	Compatibility / risk
Package	0402	0402 (1005 Metric)	0402	0402 (1005 Metric) — Package size matches.; TCC0402X7R821K500AT: Package size matches.
Capacitance	820 pF	820 pF	-	820 pF — Capacitance matches.
Voltage	50 V	50 V	50 V	50 V — Voltage rating matches.; TCC0402X7R821K500AT: Voltage rating matches.
Dielectric	C0G	NP0 (C0G)	X7R	NP0 (C0G) / X7R — Dielectric type matches.; TCC0402X7R821K500AT: X7R is less stable than C0G.
Tolerance	±5%	±5%	±10%	±5% / ±10% — Tolerance matches.; TCC0402X7R821K500AT: Wider tolerance than target.

Application & sourcing insights

Questions & answers

Verified drop-in options for CGA0402C0G821J500GT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.