Ceramic Capacitors

Image	Part Number	Description / PDF	Quantity	Rfq
	C324C392KAG5TA7301 KEMET	CAP CER 3900PF 250V C0G/NP0 RAD	0
	C1206X820F3HACAUTO KEMET	CAP CER 1206 82PF 25V ULTRA STAB	0
	C430C242F2G5TA KEMET	CAP CER 2400PF 200V C0G AXIAL	0
	C327C820FAG5TA7301 KEMET	CAP CER 82PF 250V C0G/NP0 RADIAL	0
	C420C822G2G5TA KEMET	CAP CER 8200PF 200V C0G AXIAL	0
	C0805X472J3RECAUTO KEMET	CAP CER 0805 4.7NF 25V X7R 5%	0
	C420C202JAG5TA7200 KEMET	CAP CER 2000PF 250V C0G AXIAL	0
	C1210C622G3HAC7800 KEMET	CAP CER 1210 6.2NF 25V ULTRA STA	0
	CKC18C512JDGAC7800 KEMET	KC-LINK 1812 5.1NF 1000VDC C0G	0
	C1206C101F4HACAUTO KEMET	CAP CER 1206 100PF 16V ULTRA STA	0
	C350C184K5G5TA7301 KEMET	CAP CER 0.18UF 50V C0G/NP0 RAD	0
	C322C431JAG5TA KEMET	CAP CER 430PF 250V C0G/NP0 RAD	0
	C1206C131G8HAC7800 KEMET	CAP CER 1206 130PF 10V ULTRA STA	0
	C0603C432F5JACAUTO KEMET	CAP CER 4300PF 50V U2J 0603	0
	CKC21C563GCGAC7800 KEMET	KC-LINK 2220 56NF 500VDC C0G	0
	C420C123J1G5TA7200 KEMET	CAP CER 0.012UF 100V C0G AXIAL	0
	C1206C473J3GEC7800 KEMET	CAP CER 1206 47NF 25V C0G 5%	0
	C324C332G3G5TA KEMET	CAP CER 3300PF 25V C0G/NP0 RAD	0
	C0603X362G3JAC7867 KEMET	CAP CER 3600PF 25V U2J 0603	0
	C1206X681J1HACAUTO KEMET	CAP CER 1206 680PF 100V ULTRA ST	0

Ceramic Capacitors

1. Overview

Ceramic capacitors are fixed-value capacitors with ceramic materials as dielectrics. They consist of alternating layers of ceramic and metal electrodes, offering compact size, low cost, and stable performance. As core passive components, they are critical in modern electronics for functions like noise filtering, signal coupling, and power supply stabilization. Their importance spans from consumer electronics to aerospace systems due to their reliability and wide operating frequency range.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Class I Ceramic Capacitors	High stability, low losses, linear temperature coefficient ( 30ppm/ C)	RF circuits, precision oscillators
Class II Ceramic Capacitors	Higher capacitance density, nonlinear temperature response ( 15%-22%)	Power decoupling, DC link circuits
Multi-Layer Ceramic Capacitors (MLCCs)	Stacked electrode structure, high capacitance-to-volume ratio	Mobile devices, automotive electronics
High Voltage Ceramic Capacitors	Rated voltage >1kV, thick dielectric layers	Power supplies, medical imaging equipment

3. Structure and Composition

Ceramic capacitors feature a layered structure with three primary components:

Ceramic Dielectric: Barium titanate (BaTiO3) or calcium zirconate formulations for Class II/III types
Electrodes: Nickel, copper, or silver-palladium alloys in alternating layers
Terminations: Solderable outer layers (e.g., tin/nickel plating) for PCB mounting

MLCCs are manufactured through tape casting, screen printing, and sintering processes to create monolithic structures with up to 1000+ electrode layers.

4. Key Technical Specifications

Parameter	Significance	Typical Range
Capacitance (C)	Determines charge storage capability	0.5pF - 100 F
Rated Voltage (VR)	Maximum DC working voltage	2.5V - 10kV
Capacitance Tolerance	Manufacturing accuracy	1% (Class I) to 22% (Class III)
Temperature Coefficient	Stability across temperature	-55 C to +125 C operating range
ESR (Equivalent Series Resistance)	Impacts high-frequency performance	1m - 100m

5. Application Fields

Ceramic capacitors are deployed in:

Consumer Electronics: Smartphones (decoupling), laptops (power management)
Automotive Systems: ECU units (noise suppression), EV charging circuits
Industrial Equipment: Motor drives (snubber circuits), PLC controllers
Telecommunications: 5G base stations (RF filtering), optical transceivers
Medical Devices: MRI scanners (high-voltage isolation), pacemakers

6. Leading Manufacturers and Products

Manufacturer	Key Products	Technical Highlights
Murata Manufacturing	GRM series MLCCs	Sub-millimeter 0201 size with 10 F capacity
TDK Corporation	C4532 series	High-reliability automotive grade components
KEMET Electronics	C1210 series	Space-grade tantalum ceramic hybrid capacitors
AVX Corporation	943D series	High-voltage 2000V surface-mount devices
Vishay Intertechnology	VCB series	Anti-sulfurated terminations for harsh environments

7. Selection Guidelines

Key considerations for capacitor selection:

Operating voltage margin (>20% above rated voltage)
Temperature stability requirements (Class I for precision circuits)
Size constraints (MLCCs preferred for miniaturization)
Environmental factors (humidity, vibration, thermal cycling)
Cost optimization (Class II for cost-sensitive applications)

Example: For a 5G RF front-end module, select Class I capacitors with 0.1pF tolerance and 50 impedance matching characteristics.

8. Industry Trends

Emerging developments include:

Miniaturization: Development of 01005-inch MLCCs for wearable devices
High Capacitance Density: 100 F+ in 1210 package through nano-dielectric engineering
Advanced Materials: Lead-free ceramics meeting RoHS standards
High-Temperature Performance: Capacitors operating reliably at 200 C+
Integrated Solutions: Embedded capacitor substrates for SiP (System-in-Package) applications