Low-inductance high current capacitor

To support the needs of high-frequency switching inverters and converters, Flair electronics has developed low-inductance film capacitors. To achieve low-inductance value, we adopt low-inductance internal buss connections. The low inductance capacitors are playing a greater role in power conversion circuits that deliver more power with compact encapsulation.

Flair Low-inductance film capacitors are available in values ranging from 200uf~ 5000uf, with voltages of 800V, 1000V, 1200V, 1500V, 2000V, 2500V, 2800Vdc, 3000Vdc. Normally we designed the inductance at 30~60nH, for specific requirments, we are capable of making it 15nH for high power high frequency application. In normal design, 40nH~60nH capacitor will be suitable to apply for max 2000hz switch frequency system, 30nH capacitor will be suitable to apply for max 10Khz switch frequency system. We have succesfully delivered low-inductance film capacitors for high power traction motor driver inverters, Dynamic monitor of power grid etc.

Here is a reference of 15nH low inductance capacitors as below:

Technical Parameter

No	Description	Unit	Data
1	Rated voltage	Un	3000Vdc
2	Rated Capacitance	mfd	5000uf at 100hz, 20℃
3	Tolorance	%	0~+5% at 100hz, 20℃
4	Inductance	ESL	15nH
5	Maximum effective value of continuous working current	Amp	500A
6	Equivalent series resistance	ESR	≤0.3 mΩ（100Hz）
7	loss tangent		≤10×10⁴（100Hz）
8	Overvoltage capability	1.1×U_NDC	30% working time
		1.15×U_NDC	30 min/day
		1.2×U_NDC	5min/day
		1.3×U_NDC	1min/day
		1.5×U_NDC	30ms/time, 1000 times
9	Expected Lifespan	years	10~20 Years ( up on request）

Mechanical Parameter:

No	Description	Details
1	Dielectric medium	metallized PP film
2	Filling material	polyurethane， UL94V-0
3	cooling method	natural cooling
4	Storage ambient	-40~85℃
5	Working ambient	-40~55℃
6	Relative humidity	≤95%RH
7	Max altitude	2000m