Capacitors

Capacitors – Ceramic, Electrolytic, Tantalum & Film

Capacitors are the backbone of virtually every electronic circuit — filtering noise, storing charge, decoupling power rails, and tuning frequencies with precision. Whether you're prototyping a new design, restocking your production line, or building a repair kit, our Capacitors collection covers every major type and package size. Browse multilayer ceramic capacitors (MLCCs) in compact 0201, 0603, and 0805 footprints; aluminum electrolytic and tantalum capacitors for high-capacitance applications; polypropylene film capacitors for high-voltage circuits; and specialty high-voltage ceramic capacitors — all sourced from reliable manufacturers and available in convenient bulk quantities.

Explore Our Capacitor Range

SMD Ceramic (MLCC): Industry-standard 0201, 0603, and 0805 sizes in tape-and-reel for pick-and-place assembly.
Through-Hole Electrolytic & Tantalum: DIP packages ideal for prototyping, repair work, and breadboard builds.
SMD Electrolytic & Tantalum: Space-saving surface-mount options for compact PCB layouts.
Film Capacitors: Polypropylene CBB types rated from 63 V to 2000 V for power electronics.
High-Voltage Ceramic: CT81-series capacitors rated up to 50 kV for demanding applications.
Assortment Kits: Mixed-value packs for labs, makerspaces, and classroom use.

Why Choose Our Capacitors?

Broad Selection: Ceramic, electrolytic, tantalum, and film types in one place.
Bulk Quantities: Reels of 1,000–15,000 pieces keep your production line moving.
Wide Voltage Ratings: From low-voltage 16 V SMD parts to 50 kV high-voltage ceramics.
Trusted Brands: NioCen and other quality manufacturers ensure consistent performance.
Assortment Kits: Pre-sorted value kits reduce sourcing time for engineers and hobbyists alike.

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Frequently Asked Questions

Q: What is the difference between ceramic, electrolytic, and tantalum capacitors?

A: Ceramic capacitors (MLCCs) are small, non-polarized, and suited for decoupling and high-frequency filtering. Electrolytic capacitors offer high capacitance values in a larger package and are polarized, making them ideal for power-supply filtering and bulk energy storage. Tantalum capacitors provide high capacitance in a compact, polarized package with low ESR, which is excellent for sensitive analog and power circuits where space is limited.

Q: What does SMD mean, and how does it differ from through-hole (DIP)?

A: SMD (Surface-Mount Device) capacitors are soldered directly onto pads on the surface of a PCB, enabling smaller, denser board designs and compatibility with automated pick-and-place assembly. Through-hole (DIP) capacitors have wire leads that pass through drilled holes in the PCB and are soldered on the underside — these are easier to handle manually and are preferred for prototyping and repair work.

Q: What do X7R, C0G, and other dielectric codes mean on ceramic capacitors?

A: These codes indicate the temperature coefficient and stability of the capacitor's dielectric. C0G (NP0) is the most stable class, with near-zero capacitance change over temperature — ideal for precision timing and filtering. X7R offers moderate stability (±15% over −55°C to +125°C) and is widely used for decoupling and bypassing. Y5V and Z5U have higher capacitance density but greater variation with temperature and voltage, suiting them to general bypass applications.

Q: How do I choose the right voltage rating for a capacitor?

A: Always select a capacitor whose voltage rating is higher than the maximum voltage it will see in your circuit — a common rule of thumb is to derate by at least 20–50%. For example, in a 12 V circuit, a capacitor rated at 25 V or 50 V provides a comfortable safety margin, improves reliability, and extends component lifespan.

Q: Do you offer capacitors in bulk reels suitable for automated PCB assembly?

A: Yes! Many of our SMD ceramic capacitors are available in tape-and-reel quantities of 1,000 to 15,000 pieces, fully compatible with standard pick-and-place machines. Check individual product listings — such as the 0603 10nF X7R SMD Capacitor 4000pcs Reel — for exact reel sizes and packaging specifications.