IXYS UGE0221AY4 | Standard Recovery Rectifier

Description

• Model: UGE0221AY4
• Brand: IXYS
• Part Type: High-voltage single rectifier diode
• Reverse Voltage: 4.8 kV
• Average Rectified Current: 10.2 A
• Mounting: Chassis / screw mount
• Package: UGE

Technical Introduction

The IXYS UGE0221AY4 is a high-voltage standard-recovery rectifier designed for applications requiring a 4.8 kV reverse-voltage rating and 10.2 A average rectified current. Distributor documentation identifies it as a single diode in the UGE package with chassis or screw mounting.

Its sealed high-voltage package and electrical characteristics make this device suitable for demanding high-voltage power-conversion and rectification circuits. Published application references include X-ray equipment, electrostatic precipitators, electronic beam welding, lasers, and cable-test equipment.

Engineer’s Takeaway: Confirm the required VRRM, forward-current conditions, mounting geometry, cooling arrangement, and circuit polarity before substituting another high-voltage diode.

Core Technical Specifications

IXYS UGE0221AY4

Specifications are based on current distributor and technical references; confirm the applicable IXYS/Littelfuse datasheet for the exact production revision before engineering approval.

Field Engineer’s Tech Notes

1. The 10.2 A figure is not a universal operating-current allowance.
Forward-current ratings depend on the specified thermal conditions and mounting arrangement. Verify heatsinking, ambient temperature, duty cycle, and the actual thermal path before running the diode continuously at its published current rating.

2. Check creepage, clearance, and mounting hardware at 4.8 kV.
This is a high-voltage component. The electrical design around the diode must preserve suitable insulation distances and avoid mechanical mounting conditions that introduce unwanted stress or contact to the conductive package surfaces. Do not treat it like a conventional low-voltage rectifier.

Adaptive QA & Testing Protocol

Incoming inspection starts with verification of the UGE0221AY4 marking, package integrity, terminal condition, mounting surfaces, and evidence of cracking, contamination, corrosion, or shipping damage.

Electrical QA should include polarity identification and semiconductor-junction verification with suitable test equipment. For high-voltage acceptance testing, the test voltage and method should follow the applicable OEM/datasheet limits and the customer’s safety procedure. Where a suitable production test fixture is available, reverse-leakage behavior and forward conduction can be checked under controlled conditions.

Mechanical inspection should confirm the Ø55 × 23 mm package dimensions and screw-mount arrangement before installation.

Inspection photographs, test reports, and available test videos can be provided upon request.

Buyer’s FAQ

What is the voltage rating of IXYS UGE0221AY4?

The published repetitive peak reverse-voltage rating is 4.8 kV (4800 V).

What is the current rating?

Distributor technical data lists 10.2 A average rectified current, with the forward-voltage specification given as 4.8 V maximum at 30 A under the stated test conditions. Thermal installation conditions must be considered before applying the rating.

Is UGE0221AY4 still available?

Current distributor listings show the part as active and available through multiple supply channels, although stock and factory lead time vary by distributor and order quantity.

Can another 4.8 kV diode be used as a replacement?

Not automatically. Verify reverse-voltage rating, forward-current rating, surge capability, forward voltage, thermal characteristics, package dimensions, mounting method, and the original circuit’s electrical requirements before approving an alternate device.