Series:	YFF-AC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Capacitance:	22pF
Tolerance:	±20%
Voltage - Rated:	50V
Current:	1A
DC Resistance (DCR) (Max):	--
Operating Temperature:	-55°C ~ 125°C
Insertion Loss:	30dB @ 3GHz ~ 5GHz
Temperature Coefficient:	--
Ratings:	AEC-Q200
Mounting Type:	Surface Mount
Package / Case:	0805 (2012 Metric), 4 PC Pad
Size / Dimension:	0.079" L x 0.049" W (2.00mm x 1.25mm)
Height (Max):	0.039" (1.00mm)
Thread Size:	--

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Feed Through Capacitors: YFF21AC1H220MT0Y0N Application Field and Working Principle

Feed through capacitors are specialized electrical devices that allow for the smooth passage of a signal or power across a circuit, usually by preventing transmission line oscillations and providing improved power line filtration. The YFF21AC1H220MT0Y0N is one such device – a feed through filter capacitor developed by AVX Corporation – and it has a range of application fields in new and existing power lines and circuits. This article breaks down the construction, operating principle and application fields of the YFF21AC1H220MT0Y0N capacitor – so users can assess whether or not it is suitable for their power and signal-related needs.

Construction of the YFF21AC1H220MT0Y0N Capacitor

The YFF21AC1H220MT0Y0N capacitor is a ceramic surface-mount feed through capacitor. It has a 25mm maximum diameter, with a 3.4mm rating at the internal pin and 4.6mm at the external pin. It is constructed of a hi-K ceramic material – for increased capacitance – and mounted on a TABB substrate for added heat dissipation and rigidity. Behind these elements lies a high-frequency circuit, which further enhances the unit’s signal and power transmission capabilities.

Operating Principle

The operation of feed through capacitors like the YFF21AC1H220MT0Y0N is fairly simple. As signals and power move across the capacitor, the two contacts will automatically close, which prevents noise or other electrical interference from entering the circuit. This is especially important for power lines and circuits that are exposed to electromagnetic disruption since it prevents electrical surges or other voltage irregularities. Once the signal or power transfer is complete, the two contacts will open, allowing the circuit to reset.

Applications of the YFF21AC1H220MT0Y0N

Thanks to its ease of deployment and low cost, the YFF21AC1H220MT0Y0N capacitor is suitable for application in a variety of different power and signal circuits. It is particularly suited for power and signal filtration, especially in cases where the signal rate exceeds 3GHz or the power rating is 1 Amp. It is also suitable for applications like switch-mode power supplies, RF amplifiers, digital modems and general power line protection.

Conclusion

The YFF21AC1H220MT0Y0N capacitor from AVX Corporation is a multi-functional feed through capacitor suitable for a range of power and signal delivery applications. Its hi-K ceramic construction, TABB substrate and high-frequency circuit allow for the effective use of this capacitor in improving power and signal filtration, while its compact size and low cost make it an ideal element for new and existing power line and signal circuits.

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