2pcs 220uf 25v Capacitor

🔹 2PCS 220µF 25V Aluminum Electrolytic Capacitor (Radial)

General-purpose radial aluminum electrolytic capacitors valued at 220 microfarads with a 25-volt DC rating. A versatile component widely used for power supply filtering, decoupling, and energy storage in a broad range of low-to-medium voltage electronic circuits.

✅ Specifications:

• Capacitance: 220 Microfarads (µF)

• Rated Voltage (VDC): 25V

• Tolerance: ±20% (Standard for electrolytic capacitors)

• Type: Aluminum Electrolytic, Radial Leads

• Temperature Range: -40°C to +85°C or +105°C (Common; check product spec)

• Leakage Current: Low (specified by manufacturer)

• Equivalent Series Resistance (ESR): Moderate (varies by series)

• Lead Spacing: Typically 2.5mm, 3.5mm, or 5mm

• Diameter x Height: ~ 8mm x 12mm to 10mm x 16mm (common sizes)

• Polarity: Polarized – Negative (-) lead is shorter, and a stripe/band on the can indicates the negative side.

• Quantity: 2 pieces

⚙️ Key Features:

• Higher Voltage Margin: The 25V rating provides a comfortable safety margin for common 12V and 19V circuits, improving long-term reliability.

• Substantial Capacitance: Offers significant charge storage for smoothing voltage ripples and providing local energy reserves.

• Cost-Effective Bulk Storage: The most economical solution for achieving this capacitance and voltage combination.

• Radial Design: Easy to mount vertically on PCBs, saving board space compared to axial types.

• Widely Available: A standard value found in power supplies, audio equipment, and countless consumer electronics.

📦 Typical Applications:

• Power Supply Filtering: Primary input/output filter on 12V, 15V, or 19V DC-DC converters, linear regulators, and AC-DC adapters.

• Voltage Smoothing: Smoothing the rectified output in low-to-medium power AC-DC power supplies.

• Audio Coupling & Decoupling: DC blocking (AC coupling) between amplifier stages and decoupling power rails in audio amplifiers and speakers.

• Microcontroller & IC Decoupling: Placed near power pins of digital ICs, FPGAs, and microcontrollers to suppress noise and provide localized charge.

• General Energy Storage/Buffering: Providing brief current bursts to motors, LEDs, or other pulsed loads to prevent voltage sag.

🔧 Mounting & Polarity:

1. Polarity is Critical: The negative (-) lead is shorter and aligns with the colored stripe or band on the capacitor’s body. The PCB footprint will have a + sign for the positive pad.

2. PCB Insertion: Insert leads into the correct polarity pads. The capacitor body usually sits flush against the board.

3. Voltage Derating: For enhanced reliability, it is good practice to use a capacitor with a voltage rating at least 1.5 to 2 times your circuit’s maximum operating voltage. For a 12V circuit, a 25V rating is excellent.

⚠️ Important Limitations & Care:

• Polarity Warning: Reversing voltage will cause catastrophic failure, potentially venting electrolyte or exploding. Always double-check polarity.

• Lifespan & Heat: Electrolytic capacitors have a finite lifespan (e.g., 1000-5000 hours at max temperature). Lifespan roughly doubles for every 10°C decrease in operating temperature. Avoid placing near heat sources like transformers or voltage regulators.

• Leakage Current: All electrolytics have some DC leakage. This is generally insignificant for power applications but can matter in very high-impedance circuits.

• ESR & Ripple Current: In switching power supplies, ensure the capacitor’s ripple current rating is sufficient for the application to avoid internal heating and premature failure.