Sylvania ECG509 High Voltage Silicon Rectifier Diode (R-3AT2 Replacement)

Sylvania ECGModel:ECG509 / R-3AT2
Location unavailable
Electrical Rectifiers
Qty:1
Condition: New
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Motor Control Center
Motor Control Center

Seller since: Feb 2026

At a glance

Product
Sylvania ECG509 High Voltage Silicon Rectifier Diode (R-3AT2 Replacement)
Manufacturer
Sylvania ECG
Model
ECG509 / R-3AT2
Category
Electrical Rectifiers
Condition
NEW
Availability
In stock
Price or process
Request price
Quantity
1
Lead time
Not provided
Location
Location unavailable
Fulfillment
Shipping only
Listed on

Key specifications

Maximum Average Forward Rectified Current
2.5A
Operating Temperature Maximum
150°C
Operating Temperature Min
-65°F
Package Type
Plug-in replacement with 9-pin base
Peak Inverse Voltage
45V
Surge Current Rating
100A

Supporting evidence

No supporting documents or certifications provided.

Description

The Sylvania ECG509 is a high-voltage silicon rectifier diode designed as a direct solid-state replacement for the 3AT2 vacuum tube rectifier. This component is ideal for applications requiring high-voltage rectification, such as in vintage color television sets, CRT monitors, and other high-voltage power supplies. It offers significant advantages over traditional vacuum tubes, including greater reliability, longer lifespan, reduced heat generation, and easier installation without the need for filament power. The ECG509 features a robust construction with a peak inverse voltage rating of 45kV, making it suitable for focus and anode voltage circuits. Benefits include improved efficiency and lower maintenance costs, though it may require minor circuit modifications in some retrofits. Drawbacks can include sensitivity to voltage spikes if not properly protected. This model is part of Sylvania's ECG line of replacement semiconductors, ensuring compatibility with legacy equipment while providing modern performance enhancements.
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