4.7 µF, 63V (Aluminium Electrolytic)

4.7 µF, 63V (Aluminium Electrolytic), Through hole

Identification and Orientation
The Long Lead Rule: The positive lead (anode) is visibly longer than the negative lead on through-hole models.
The Stripe Indicator: The capacitor body features a printed stripe (usually containing a minus symbol -) marking the negative lead.

The primary applications include:
50V : It safely replaces any lower voltage need (5V, 12V, 24V).
63V : Practically identical in size and price to the 50V variant. Students frequently buy 63V capacitors for the extra safety cushion against voltage ripples.

A 4.7 µF electrolytic capacitor is a versatile polarized component used primarily for audio coupling, power supply decoupling/filtering, and low-frequency timing circuits. Because it is polarized, it must always be installed with its negative lead connected to a lower potential.

Common, practical applications for this capacitor include:
Audio Coupling: It blocks DC voltage while allowing the AC audio signal to pass seamlessly between different stages of an amplifier or pre-amp.
Power Supply Filtering: It acts as a reservoir and filter near ICs to smooth out DC voltage ripples and suppress transient power spikes.
Bypassing: It provides a low-impedance path to ground for unwanted high-frequency noise, keeping power lines stable.
Timing & Oscillators: When paired with a resistor, it determines the frequency of RC oscillator circuits or the time delay in 555 timer configurations.
DC-DC Converters: It helps buffer and smooth rectified DC voltages in voltage regulators and compact converters.