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.
Featured Products
- 0201 SMD Multilayer Ceramic Capacitor 15000 PCS/Roll 0.5pF–4.7uF – Ultra-compact MLCCs in a full production reel, covering a wide capacitance range.
- 0805 SMD Ceramic Capacitor Reel – 0.5pF to 47uF MLCC – Popular 0805 footprint in tape-and-reel, perfect for hand or automated soldering.
- 10PCS CBB Polypropylene Film Capacitor 63V–2000V | NioCen – High-voltage film caps for power supplies, inverters, and motor-drive circuits.
- 10-Pack NioCen 10uF 25V Tantalum Capacitors DIP Through Hole – Low-ESR tantalum capacitors in easy-to-solder through-hole packages.
- 10PCS CT81 High Voltage Ceramic Capacitor 10KV–50KV | NioCen – Specialty high-voltage ceramics for HV power electronics and test equipment.
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.
Learn more: EPA guidance on lithium-ion battery handling
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.
