What risks should I check before replacing CQ0402BRNPO9BNR40?

When replacing CQ0402BRNPO9BNR40, verify that the alternative's secondary parameters (like Q-factor or ESR) are suitable for your application, especially in RF or high-frequency circuits. Also, confirm the sourcing availability of the chosen replacement.

CQ0402BRNPO9BNR40 Alternatives, Datasheet & Cross Reference | Yageo

Find and compare replacements for the Yageo CQ0402BRNPO9BNR40, a 0.4pF 50V NP0 0402 MLCC. This page analyzes alternatives for form, fit, and function to aid your design and sourcing decisions.

AI replacement insight

Electrical risklow

Key specs match, but secondary parameters may differ.

Package risklow

Package is a standard 0402, ensuring physical compatibility.

Sourcing riskmedium

Verify stock and lead time for the alternative manufacturer.

Can it be replaced directly?

Direct replacement for CQ0402BRNPO9BNR40 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The most promising path is 0402CG0R4B500NT from FH, which matches all key electrical and physical specifications.

Main risk

The main risk is subtle performance deviation in sensitive circuits (e.g., RF filters, oscillators) due to unspecified secondary parameters like ESR or Q-factor differing between manufacturers.

Recommended alternatives

Parametric alternative with slightly higher capacitance and looser tolerance. Requires engineering review.

View details

Alternative comparison matrix

Feature / factor	CQ0402BRNPO9BNR40	0402CG0R4B500NT	TCC0402COG0R5C500AT	Compatibility / risk
Package	0402 (1005 metric)	0402	0402	0402 — Package size matches.; TCC0402COG0R5C500AT: Package size matches.
Capacitance	0.4 pF	0.4 pF	0.5 pF	0.4 pF / 0.5 pF — Capacitance matches.; TCC0402COG0R5C500AT: Higher capacitance.
Voltage	50 V	50 V	50 V	50 V — Voltage rating matches.; TCC0402COG0R5C500AT: Voltage rating matches.
Tolerance	±0.1 pF	±0.1 pF	±0.25 pF	±0.1 pF / ±0.25 pF — Tolerance matches.; TCC0402COG0R5C500AT: Looser tolerance.
Dielectric	NP0 (C0G)	C0G (NP0)	-	C0G (NP0) — Dielectric type is equivalent.

Application & sourcing insights

Questions & answers

Verified drop-in options for CQ0402BRNPO9BNR40 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.