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1N4305
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Product Detailed Parameters
- Description：DIODE STANDARD 75V 300MA DO35
- Series：-
- Mfr：onsemi
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：75 V
- Current - Average Rectified (Io)：300mA
- Voltage - Forward (Vf) (Max) @ If：850 mV @ 10 mA
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：4 ns
- Current - Reverse Leakage @ Vr：100 nA @ 50 V
- Capacitance @ Vr, F：2pF @ 0V, 1MHz
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-35
- Operating Temperature - Junction：175°C (Max)
- Grade：-
- Qualification：-
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Overview
The 1N4305 is a small signal switching diode manufactured by onsemi, designed for high-speed computer and signal applications. It features a single configuration in a DO-35-2 through-hole package. Key electrical parameters include a peak reverse voltage of 75 V, a maximum forward current of 10 mA, and a recovery time of 2 ns. The device operates within a temperature range of -65 °C to +150 °C, with a typical forward voltage of 850 mV and a maximum reverse current of 100 nA.
Feature Summary
- High-speed switching capability with 2 ns recovery time
- Low junction capacitance for signal integrity
- Robust thermal performance up to +150 °C
Applications
- Computer logic circuits
- Signal rectification
- High-speed switching applications
Procurement Notes
Verify the manufacturer designation carefully, as the 1N4305 part number is historically associated with Microchip Technology (formerly Microsemi) rather than onsemi. Confirm that the specific supplier listing explicitly identifies onsemi as the producer before procurement. Ensure the component matches the required DO-35-2 axial leaded package and RoHS compliance status specified in the official datasheet.
Selection Notes
Select this component when a standard silicon switching diode with low capacitance is required for digital or analog signal paths. The 75 V reverse voltage rating suits low-voltage logic systems. Verify that the 10 mA forward current limit meets the circuit requirements, as higher current applications may require different diode families.
Part Context
The 1N4305 belongs to the general-purpose small-signal diode category, distinct from power rectifiers or Zener regulators. It is commonly used in conjunction with other discrete semiconductors for protection and signal conditioning in consumer electronics and industrial control boards.
Replacement Considerations
Cross-reference with 1N4149 or 1N914 for similar switching characteristics. Verify pinout compatibility and ensure substitute parts meet the same 75 V reverse voltage and 2 ns recovery time specifications.
