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ALUMINUM ELECTROLYTIC CAPACITOR, SNAP-IN TYPE
USK / VXK SERIES: MINIATURIZATION USK / MXK / VXK SERIES: ADD 475V AND 500V

1. Introduction

In expected growth market such as industrial equipment, new energy, servers, white goods home appliances, etc., many snap-in type aluminum electrolytic capacitors are used in applications of switching power supplies and inverter smoothing.
Snap-in type aluminum electrolytic capacitors occupy relatively large volume on power supply unit, therefore miniaturization of input capacitors leading to downsizing of the set and cost reduction is strongly required. Meeting these market requirement, we had developed miniaturized products for input smoothing such as USK series (85ºC 3,000 hours), MXK series (105ºC 3,000 hours) and VXK series (105ºC 5,000 hours). this time, we upgrade 400 to 450V items and achieve the highest capacity per volume in snap-in category, applying miniaturization technology of the most advanced miniaturized product MXK series.
And, demands for miniaturized 475V/500V withstand voltage products increase in servers, photovoltaic power generation facilities and uninterruptible power supply (UPS) in recent years. In response to these demands, we also added high capacitance items of 475V/500V to USK series, MXK series and VXK series.

2. Features

(Miniaturized: USK series and VXK series)
Miniaturization of USK series and VXK series is realized by adopting a newly developed high capacity electrode foil and manufacturing technology with high precision winding.
Major specifications (400 to 450V) are USK series: 85ºC 3000 hours, the capacitance range 120 to 1200 µF, the size range Φ22 × 25 L to Φ 35 × 60 L, and VXK series: 105ºC 5000 hours, the capacitance range 120 to 1200 µF, size range Φ22 × 25L to Φ35 × 60L.
We achieve in USK series at most 25% higher capacitance than the conventional items of the same size, and in VXK series, at most 23% higher capacitance than the conventional items of the same size.

Major specifications (400 to 450V)
SeriesUSK SeriesVXK Series
SizeΦ22×25L~Φ35×60LΦ22×25L~Φ35×60L
Temperature
Range
-25ºC~+85ºC-25ºC to + 105ºC
Rtaed voltage400Vdc420Vdc450Vdc400Vdc420Vdc450Vdc
Capacitance150 to
1200µF
150 to
1200µF
120 to
1200µF
150 to
1200µF
120 to
1000µF
120 to
1000µF
Lifetime85ºC 3,000 hours105ºC 5,000 hours

Performance comparison (450V)
SeriesVoltage
(Vdc)
Size
ΦD×L(㎜)
UpgradesConventional
Capacitance
(µF)
Ripple
(Ar.m.s)
Capacitance
(µF)
Ripple
(Ar.m.s)
USK45022×251501.411201.30
VXK45025×352701.502201.39
VXK

(475V/500V addition: USK series, MXK series and VXK series)
475V/500V addition of USK series, MXK series and VXK series is also realized by adopting a newly developed high capacity electrode foil and manufacturing technology with high precision winding. Major specifications (475V/500V) are USK series: 85ºC 3000 hours, the capacitance range 100 to 820 μF, the size range Φ 22 × 25 L to Φ 35 × 60 L, MXK series: 105ºC 3000 hours, the capacitance range 68 to 820 µF, size range Φ22 × 25L to Φ35 × 60L , and VXK series: 105ºC 5000 hours, the capacitance range 68 to 820 µF, size range Φ22 × 25L to Φ35 × 55L.
We realize in MXK series at most 50% higher capacitance than conventional series (MXH series) of the same size, and in VXK series, 20 to 83% higher capacity than the same size product of conventional VXG series.

Major specifications(475V, 500V)
SeriesUSK seriesMXK seriesVXK series
SizeΦ22×25L to Φ35×60LΦ22×25L to Φ35×60LΦ22×25L to Φ35×55L
Temperature Range-25ºC to +85ºC-25ºC to +105ºC-25ºC to +105ºC
Rtaed voltage475Vdc500Vdc475Vdc500Vdc475Vdc500Vdc
Capacitance100 to
820µF
100 to
820µF
82 to
820µF
68 to
680µF
82 to
680µF
68 to
680µF
Lifetime85ºC 3,000 hours105ºC 3,000 hours105ºC 5,000hours

Performance comparison (500V)
SeriesVoltage
(Vdc)
Size
ΦD×L(㎜)
UpgradesConventional
Capacitance
(µF)
Ripple
(Ar.m.s)
Capacitance
(µF)
Ripple
(Ar.m.s)
USK50025×402201.93
MXK50030×352701.561801.28
VXK50030×403301.671801.34

These miniaturized products are contribute to further downsizing and cost reduction of switching power supply and inverter.
Various terminal shapes such as 2 terminals, 3 terminals, reverse insertion preventing terminal and so on are available. Please inquire details.

MXK

3. Schedules of Sample Distribution and Mass Production

Sample Distribution :Available
Mass Production : December, 2017

USK Series Catalog data       MXK Series Catalog data       VXK Series Catalog data

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