The idea is to allow designers to handle DC bus voltages of up to 1100V with fewer components.
PCB space
“With their higher voltage ratings up to 600 V, the enhanced 193 PUR-SI series devices released today allow designers to achieve this voltage range with fewer components, while eliminating the need for voltage balancing circuits – saving PCB space and reducing BOM costs,” writes Vishay.
“In addition, the added voltage headroom extends capacitor lifetimes and enhances overall system reliability.”
Snap-in power capacitors
The 193 PUR-SI series devices handle ripple currents up to 3.27 A. Lifetime use is quoted as 5,000 hours at +105°C.
They offer capacitance from 47µF to 820µF in 25 compact case sizes ranging from 22mm x 25mm to 35mm x 60mm. The RoHS-compliant capacitors are also available with 3-pin keyed polarity snap-in terminals for more stable PCB mounting.
Buffering
“As polarized aluminium electrolytic capacitors with a non-solid electrolyte, the devices are ideally suited for smoothing, buffering, and DC-Link filtering in switch mode power supplies; chargers, battery management systems (BMS), and motor controls in electric (EV) and hybrid electric (HEV) vehicles; industrial motor drives and air conditioners; solar inverters; medical equipment; UPS; and welding equipment.”
You can see the specification table for the snap-in power capacitors below.
| Case size (D x L in mm) |
22 x 25 to 35 x 60 |
|
| Capacitance range |
47 µF to 820 µF |
|
| Tolerance |
± 20 % |
|
| Rated voltage |
400 V to 450 V |
500 V to 600 V |
| Category temperature range |
-40 °C to +105 °C |
|
| Useful life at +105 °C |
5000 h |
|
| Max. ESR at 100 Hz |
120 mΩ to 3365 mΩ |
|
| Max. impedance at 10 kHz |
80 mΩ to 2700 mΩ |
|
| Sectional specification |
IEC 60384-4 / EN130300 |
|
| Climatic category IEC 60038 |
40 / 105 / 56 |
25 / 105 / 56 |
More information is on the Vishay website.
