C0805X183J8JAC7800 vs VJ0402D1R7DLBAC

Part Number	C0805X183J8JAC7800	VJ0402D1R7DLBAC
Category	Ceramic Capacitors	Ceramic Capacitors
Manufacturer	KEMET	Vishay Vitramon
Description	CAP CER 0.018UF 10V U2J 0805	CAP CER 1.7PF 100V C0G/NP0 0402
Package	Tape & Reel (TR)	0402 (1005 Metric)
Series	SMD Comm U2J Flex	VJ HIFREQ
Features	Low ESL, Soft Termination, Low Dissipation Factor	High Q, Low Loss
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Surface Mount, MLCC	Surface Mount, MLCC
Package / Case	0805 (2012 Metric)	0402 (1005 Metric)
Applications	Boardflex Sensitive	RF, Microwave, High Frequency
Tolerance	±5%	±0.5pF
Temperature Coefficient	U2J	C0G, NP0
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.040" L x 0.020" W (1.02mm x 0.51mm)
Voltage - Rated	10V	100V
Lead Spacing	-	-
Thickness (Max)	0.034\" (0.87mm)	0.024" (0.61mm)
Ratings	-	-
Height - Seated (Max)	-	-
Capacitance	0.018 µF	1.7pF
Lead Style	-	-
Failure Rate	-	-

1. What is the difference between ceramic capacitors and electrolytic capacitors?

Polarity: Ceramic capacitors are non-polar, while electrolytic capacitors are polar.
Capacity range: Electrolytic capacitors generally offer larger capacitance values.
Stability: Ceramic capacitors are more stable, especially when the temperature changes.
Lifespan: Ceramic capacitors have a longer lifespan because there is no liquid electrolyte to dry out.
2. Do ceramic capacitors deteriorate over time?

While ceramic capacitors are relatively stable, their capacitance value may decrease slightly over time, especially under extreme environmental conditions. However, this change is usually small and will not significantly affect most applications.
3. Does the orientation of ceramic capacitors matter?

Ceramic capacitors are non-polar, so the mounting orientation does not affect their function.
4. Can ceramic capacitors be used in AC?

Ceramic capacitors are well suited for AC circuits because they have good frequency response characteristics and low losses.