Ceramic Capacitors

Image	Part Number	Description / PDF	Quantity	Rfq
	250R18X475MV4E Johanson Dielectrics, Inc.	CAP CER 4.7UF 25V X5R 1206	0
	160R14W104KV4T Johanson Dielectrics, Inc.	CAP CER 0.1UF 16V X7R 0603	0
	6R3R18X106KV4E Johanson Dielectrics, Inc.	CAP CER 10UF 6.3V X5R 1206	0
	501R18W681KV4E Johanson Dielectrics, Inc.	CAP CER 680PF 500V X7R 1206	0
	501X44W153MF4E Johanson Dielectrics, Inc.	CAP CER 0.015UF 500V X7R 1410	0
	6R3S41X226MV4E Johanson Dielectrics, Inc.	CAP CER 22UF 6.3V X5R 1210	0
	500X41W224MV4E Johanson Dielectrics, Inc.	CAP CER 0.22UF 50V X7R 1210	0
	6R3R07X225MV4T Johanson Dielectrics, Inc.	CAP CER 2.2UF 6.3V X5R 0402	0
	6R3S41X476MV4E Johanson Dielectrics, Inc.	CAP CER 47UF 6.3V X5R 1210	0
	251R15W223KF4T Johanson Dielectrics, Inc.	CAP CER 0.022UF 250V X7R 0805	0
	302R29N151JF3E-****-SC Johanson Dielectrics, Inc.	CAP CER 150PF 3KV NP0 1808	0
	160R18W225KV4E Johanson Dielectrics, Inc.	CAP CER 2.2UF 16V X7R 1206	0
	102R15W222KF4E Johanson Dielectrics, Inc.	CAP CER 2200PF 1KV X7R 0805	0
	100X14X105MV4T Johanson Dielectrics, Inc.	CAP CER 1UF 10V X5R 0603	0
	102S48W104KF4E Johanson Dielectrics, Inc.	CAP CER 0.1UF 1KV X7R 2225	0
	160S41X226KV4E Johanson Dielectrics, Inc.	CAP CER 22UF 16V X5R 1210	0
	502R30W681KF4E-****-SC Johanson Dielectrics, Inc.	CAP CER 680PF 5KV X7R 2211	0
	500X41W104MV4E Johanson Dielectrics, Inc.	CAP CER 0.1UF 50V X7R 1210	0
	6R3R15X475KV4E Johanson Dielectrics, Inc.	CAP CER 4.7UF 6.3V X5R 0805	0
	202R18N221JF4E Johanson Dielectrics, Inc.	CAP CER 220PF 2KV NP0 1206	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