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1N4944GP-M3/73
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Product Detailed Parameters
- Description：DIODE STANDARD 400V 1A DO204AL
- Series：SUPERECTIFIER®
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Box (TB)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：400 V
- Current - Average Rectified (Io)：1A
- Voltage - Forward (Vf) (Max) @ If：1.3 V @ 1 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：150 ns
- Current - Reverse Leakage @ Vr：1 µA @ 400 V
- Capacitance @ Vr, F：15pF @ 4V, 1MHz
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Supplier Device Package：DO-204AL (DO-41)
- Operating Temperature - Junction：-65°C ~ 175°C
- Grade：-
- Qualification：-
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Overview
The Vishay 1N4944GP-M3/73 is a glass-passivated fast switching rectifier diode in the Superectifier series. It features a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 1.0 A. The device exhibits a maximum DC reverse current of 1.0 μA at rated voltage and a typical junction capacitance of 15 pF. Reverse recovery time is specified at 250 ns, with a peak forward surge current capability of 25 A. Operating temperature ranges from -65 °C to +175 °C.
Feature Summary
- Superectifier structure for high reliability
- Cavity-free glass-passivated junction
- Fast switching for high efficiency
- Low leakage current
Applications
- Fast switching rectification of power supplies
- Inverters and converters
- Freewheeling diodes for consumer electronics
- Telecommunication equipment
Procurement Notes
Verify that the M3 suffix indicates lead-free composition and RoHS compliance as per Vishay standards. Confirm the /73 packaging code corresponds to the specific ammo pack delivery mode required for your assembly line. Ensure the component meets JESD 201 class 1A whisker test requirements if applicable to your design specifications.
Selection Notes
Select this component when a 400 V blocking voltage and 1.0 A continuous current rating are required. The 250 ns reverse recovery time makes it suitable for high-frequency applications compared to standard rectifiers. Consider the DO-41 through-hole package for manual or wave soldering processes where axial leads are preferred over surface mount options.
Part Context
This part belongs to the 1N494xGP family of fast switching plastic rectifiers manufactured by Vishay General Semiconductor. The series includes variants with different voltage ratings such as 200 V, 600 V, 800 V, and 1000 V. All members share the same Superectifier technology and DO-41 mechanical outline, differing primarily in their peak reverse voltage and reverse recovery time specifications.
Replacement Considerations
Direct substitutes within the same Vishay lineup include 1N4942GP (200 V), 1N4946GP (600 V), 1N4947GP (800 V), and 1N4948GP (1000 V). Cross-manufacturer replacements must match the 400 VRRM, 1.0 AIF(AV), and 250 ns trr specifications while maintaining the DO-41 package form factor.
