Ceramic Capacitors

Image	Part Number	Description / PDF	Quantity	Rfq
	C1206X683M1REC7800 KEMET	CAP CER 1206 68NF 100V X7R 20%	0
	C1210C432F8HAC7800 KEMET	CAP CER 1210 4.3NF 10V ULTRA STA	0
	C325C333J5G5TA7301 KEMET	CAP CER 0.033UF 50V C0G/NP0 RAD	0
	C907U200JZSDBA7317 KEMET	CAP CER 20PF 440VAC SL RADIAL	0
	C0805X912J5JACAUTO KEMET	CAP CER 50V U2J 0805	0
	C325C184J2R5TA KEMET	CAP CER RAD 180NF 200V X7R 5%	0
	C0603C139B8HACAUTO KEMET	CAP CER 0603 1.3PF 10V ULTRA STA	0
	C0603X102K2RACAUTO KEMET	CAP CER 1000PF 200V X7R 0603	0
	C327C223F2G5TA KEMET	CAP CER 0.022UF 200V C0G/NP0 RAD	0
	C0603X279D5HAC7867 KEMET	CAP CER 0603 2.7PF 50V ULTRA STA	0
	C1206C562M8HACAUTO KEMET	CAP CER 1206 5.6NF 10V ULTRA STA	0
	C0603X302G4JACAUTO KEMET	CAP CER 3000PF 16V U2J 0603	0
	C315C470KAG5TA7301 KEMET	CAP CER 47PF 250V C0G/NP0 RADIAL	0
	C315C102G3G5TA7301 KEMET	CAP CER 1000PF 25V C0G/NP0 RAD	0
	C322C121G3G5TA7301 KEMET	CAP CER 120PF 25V C0G/NP0 RADIAL	0
	C325C130K3G5TA7301 KEMET	CAP CER 13PF 25V C0G/NP0 RADIAL	0
	C1206C279B3HACAUTO KEMET	CAP CER 1206 2.7PF 25V ULTRA STA	0
	C1206X103MAREC7210 KEMET	CAP CER 1206 10NF 250V X7R 20%	0
	C1812C561F1HAC7800 KEMET	CAP CER 1812 560PF 100V ULTRA ST	0
	CKC33C622JWGAC7210 KEMET	KC-LINK 3640 6.2NF 650VDC C0G	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