Is there a pin-compatible replacement for CQ0402BRNPO9BN6R0?

Several 0402 capacitors are pin-compatible in form factor, such as Yageo's CC0402BRNPO9BN6R0. However, pin compatibility does not guarantee functional equivalence. The target is a high-Q part, and substitutes must be verified for RF performance.

What risks should I check before replacing CQ0402BRNPO9BN6R0?

Key risks include: 1) RF Performance: Ensure the replacement has a comparable Q-factor and low ESR. 2) Tolerance: The target has a tight ±0.1pF tolerance critical for tuning. 3) Application: A general-purpose capacitor may fail in a high-frequency RF application.

CQ0402BRNPO9BN6R0 Alternatives, Datasheet & Cross Reference | Yageo

Finding a substitute for the Yageo CQ0402BRNPO9BN6R0, a 6pF 50V high-Q 0402 capacitor, requires careful review of RF performance. While some parts match key specs, the high-Q characteristic is critical.

AI replacement insight

Electrical riskhigh

Substituting a general-purpose capacitor for a high-Q part can alter circuit performance, especially at high frequencies.

Package risklow

Many 0402 capacitors are available with the same footprint.

Can it be replaced directly?

No direct drop-in replacement has been verified. The closest candidate, CC0402BRNPO9BN6R0, matches key parameters but is a general-purpose part, not high-Q, posing a risk in RF applications.

Best replacement path

The best path is to find another high-Q capacitor in the same CQ series or a competitor's equivalent high-Q series with identical C, V, and tolerance.

Main risk

The main risk is substituting a general-purpose capacitor for a high-Q part, which can degrade RF circuit performance (e.g., in filters, oscillators, or matching networks).

Recommended alternatives

Matches key electricals and package, but is not a high-Q part. Requires engineering review for RF use.

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Alternative comparison matrix

Feature / factor	CQ0402BRNPO9BN6R0	CC0402BRNPO9BN6R0	TCC0402COG6R0C500AT	Compatibility / risk
Package	0402 (1005 metric)	0402 (1005 metric)	0402	0402 (1005 metric) — Form and fit are identical.; TCC0402COG6R0C500AT: Form and fit are identical.
Capacitance	6 pF	6 pF	6 pF	6 pF — Nominal capacitance is identical.; TCC0402COG6R0C500AT: Nominal capacitance is identical.
Voltage	50 V	50 V	-	50 V — Voltage rating is identical.
Tolerance	±0.1 pF	±0.1 pF	±0.25 pF	±0.1 pF / ±0.25 pF — Tight tolerance is matched.; TCC0402COG6R0C500AT: Tolerance is wider.
Application	CQ (High-Q)	CC (General Purpose)	General Purpose (inferred)	CC (General Purpose) / General Purpose (inferred) — Target is a High-Q part for RF.; TCC0402COG6R0C500AT: Target is High-Q, candidate is not specified.
Manufacturer	Yageo	-	CCTC	CCTC — Cross-vendor alternative.

Application & sourcing insights

Questions & answers

The best alternative is another high-Q capacitor with 6pF capacitance, 50V rating, and ±0.1pF tolerance in an 0402 package. Yageo's CC0402BRNPO9BN6R0 is parametrically similar but is a general-purpose part, requiring RF performance validation.