Ceramic Capacitors

Part Number	Description / PDF	Quantity
301S42E201JV4E Johanson Technology	CAP CER 200PF 300V NP0 1111	0
QCCT102Q3R3B1GV002E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
501S42E9R1CV4E Johanson Technology	CAP CER 9.1PF 500V C0G/NP0 1111	0
QCCT102Q620F1GV002E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
500R07S330KV4T Johanson Technology	CAP CER 33PF 50V NP0 0402	0
QCCF251Q240G1GV001T Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
QCCT102Q120K1GV002E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
500R07S2R4AV4T Johanson Technology	CAP CER 2.4PF 50V NP0 0402	0
201S42E241GV4E Johanson Technology	CAP CER 240PF 200V NP0 1111	0
301S42E121KV4E Johanson Technology	CAP CER 120PF 300V NP0 1111	0
QCCF251Q6R8A1GV001T Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
251R14S101KV4T Johanson Technology	CAP CER 100PF 250V NP0 0603	0
251R15S121GV4E Johanson Technology	CAP CER 120PF 250V NP0 0805	0
QCCT102Q1R3B1GV002E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
QCCT102Q5R1B1GV002E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
QCCT102Q1R7C1GV001E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
QCCT102Q150K1GV001E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
251R14S680GV4T Johanson Technology	CAP CER 68PF 250V C0G/NP0 0603	7475
QCCF251Q1R9A1GV002T Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	0
QCCT102Q0R4A1GV002E Johanson Technology	HIGH-Q MLC CAPACITOR, C-SERIES,	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