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Product Detailed Parameters
- Description：DIODE SCHOTTKY 30V 3A DO201AD
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：30 V
- Current - Average Rectified (Io)：3A
- Voltage - Forward (Vf) (Max) @ If：500 mV @ 3 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：500 µA @ 30 V
- Capacitance @ Vr, F：190pF @ 4V, 1MHz
- Mounting Type：Through Hole
- Package / Case：DO-201AD, Axial
- Supplier Device Package：DO-201AD
- Operating Temperature - Junction：-65°C ~ 125°C
- Grade：-
- Qualification：-
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Overview
The onsemi 1N5821 is a silicon Schottky barrier rectifier designed for low voltage, high frequency applications. It features an average forward current of 3 A and a maximum repetitive peak reverse voltage of 30 V. The device exhibits a typical forward voltage drop of 500 mV at rated current and supports a non-repetitive peak forward surge current of 80 A. It operates within a temperature range of -65°C to +125°C and is housed in the DO-201AD axial through-hole package.
Feature Summary
- Schottky barrier construction provides fast switching speeds and negligible reverse recovery time.
- Low forward voltage drop minimizes conduction losses and improves overall system efficiency.
- High thermal stability allows reliable operation at elevated junction temperatures up to 125°C.
Applications
- Free wheeling diodes in DC-DC converters
- Polarity protection circuits
- Power supply rectification
Procurement Notes
Verify component authenticity against official datasheets due to widespread manufacturing by multiple vendors. Confirm package integrity and lead plating quality upon receipt. Check for specific manufacturer suffixes that may indicate process changes or packaging variations. Ensure storage conditions maintain moisture sensitivity levels appropriate for through-hole components.
Selection Notes
Select this component when a 3 A current rating and 30 V blocking capability are required. The DO-201AD package suits board-level mounting where axial leads are preferred. Consider thermal derating guidelines for ambient temperatures exceeding standard ratings. Verify compatibility with circuit switching frequencies to leverage the low reverse recovery charge characteristics.
Part Context
This part belongs to the 1N58xx series of Schottky rectifiers, widely used in power electronics. The 1N5821 specifically targets the 30 V segment, complementing variants like the 1N5819 (40 V) and 1N5820 (20 V). It serves as a standard replacement for legacy designs requiring robust, low-loss rectification in compact form factors.
Replacement Considerations
Direct substitutes include Vishay 1N5821 and PFS 1N5821. Cross-reference electrical parameters such as forward voltage and reverse leakage to ensure circuit compatibility. Verify package dimensions match existing PCB footprints before implementation.
