KY101M400I450A
CapXon KY slim radial capacitor, 100 uF at 400 V, Ø13 x 45 mm, 105 °C for height-limited high-voltage bulk.
The KY101M400I450A is a CapXon KY series radial leaded aluminum electrolytic capacitor rated at 400 V with 100 uF, in a slim case of about 13 mm diameter by 45 mm long. The KY series is a 105 °C slim high-voltage radial range designed for height-limited applications, and it covers 250 V to 450 V so it can hold a rectified high-voltage bus while keeping a small diameter. A radial leaded capacitor mounts directly on the printed circuit board with two straight leads, which suits the standard lead spacings and keeps the footprint compact even at this voltage. The 100 uF at 400 V is a common primary-side bulk value for a medium-power supply or an auxiliary high-voltage rail, and the thin 13 mm can fits beside other components where a wider capacitor would not. The operating temperature range is -40 °C to +105 °C. Typical uses include the primary bulk capacitance of an offline switching supply, the auxiliary high-voltage rail of an inverter and the smoothing of a high-voltage LED driver. Every capacitor BeiLuo ships is factory-traceable and includes an import declaration, a certificate of origin and a RoHS compliance file. Our FAE team helps you size the capacitance and ripple and confirm the voltage margin.
FAE Professional Review
The KY101M400I450A is the slim high-voltage choice when you need a 400 V bulk capacitor but cannot spare a wide footprint, and the 13 mm can is a real advantage in a dense primary side. Keep the ripple within the rating and observe the creepage and clearance for the high voltage. For a longer life in the same class, consider combining it with a snap-in bulk part on the DC side.
| Parameter | Value |
|---|---|
| Capacitance | 100 uF |
| Voltage | 400 V |
| Case Size | Ø13 x 45 mm |
| Temperature | -40 °C to +105 °C |
| Endurance | 2000 h at 105 °C |
Application Circuits
Offline supply primary bulk
Reference circuits and application schematics for Offline supply primary bulk are available from our FAE team.
Inverter auxiliary high-voltage rail
Reference circuits and application schematics for Inverter auxiliary high-voltage rail are available from our FAE team.
High-voltage LED driver smoothing
Reference circuits and application schematics for High-voltage LED driver smoothing are available from our FAE team.
Need a reference schematic or design review? Our FAE engineers can share verified circuits and layout guidance for this part.
Related Documents
Alternative Part Numbers
| Model | Package | Note | Action |
|---|---|---|---|
| LE220M450I250A | Radial Ø13 x 25 mm | Ultra-long-life 450 V radial capacitor for a longer service interval | View |
Complementary Part Numbers
| Model | Package | Note | Action |
|---|---|---|---|
| KM471M035G160A | Radial Ø10 x 16 mm | Radial capacitor for the low-voltage secondary rail | View |
| UJ471M450O450A | Snap-in Ø30 x 45 mm | Snap-in capacitor for the high-voltage DC link bulk | View |
Recommended Complementary Products
Frequently Asked Questions
What projects suit the KY101M400I450A?
It suits height-limited primary sides that need a 400 V bulk capacitor in a slim can, such as an offline switching supply, an inverter auxiliary high-voltage rail or a high-voltage LED driver. The 13 mm diameter keeps the footprint small.
Observe the creepage and clearance for the high voltage.
How do I handle the high voltage safely?
Keep the required creepage and clearance around the high-voltage terminals, use a suitable discharge path for the bulk capacitor, and keep the low-voltage side separated. Confirm the voltage margin against the worst-case bus.
Our FAE team can review the high-voltage layout.
Is the part genuine and documented?
BeiLuo supplies factory-traceable KY101M400I450A capacitors with an import declaration, certificate of origin and RoHS file on every order. Stock is normally available and the datasheet downloads from this page.
Order a sample to validate the part before volume production.