The Part Number is 1N4148, IN4148.

The function of this diode is Small Signal Fast Switching Diode.

Package: DO-25 ( DO-204AH )

Manufacturer: Vishay Telefunken

Description

1N4148 Diode is 100V, 300mA, Rectifier. A switching diode, also known as a fast diode or a high-speed diode, is a type of diode designed specifically for high-speed switching applications. These diodes are characterized by their ability to transition quickly between their conducting (forward-biased) and non-conducting (reverse-biased) states, making them suitable for use in electronic circuits where fast switching times are crucial.

1. Voltage Rating (100V): This indicates the maximum reverse voltage that the diode can handle without breaking down or experiencing a reverse breakdown voltage. In other words, the diode can be reverse-biased up to 100 volts before it may start conducting in the reverse direction due to a breakdown.

2. Current Rating (300mA): This represents the maximum forward current that the diode can handle without becoming damaged. In this case, the diode is rated for a continuous forward current of 300 milliamperes (mA).

3. Switching Diode: The term “switching diode” suggests that this diode is designed for high-speed switching applications. Switching diodes are typically characterized by fast recovery times, low capacitance, and low forward voltage drop.

They are commonly used in applications where rapid on/off switching is required, such as in rectifiers, signal clippers, and voltage clamps.

Specification

1. Case : DO-35 (DO-204AH)

2. Weigh t: approx. 105 mg

3. Cathode band color : black

Features

1. Silicon epitaxial planar diode

2. Electrically equivalent diodes : 1N4148 – 1N914

3.  Material categorization :

Applications

1. Extreme fast switches

 

Absolute maximum ratings ( Ta=25°C )

1. Repetitive peak reverse voltage : VRRM = 100 V

2. Reverse voltage : VR = 75 V

3. Peak forward surge current (tp = 1 μs) : IFSM = 2 A

4. Repetitive peak forward current : IFRM = 500 mA

5. Forward continuous current : IF = 300 mA

6. Average forward current (VR = 0) : IF(AV) = 150 mA

7. Power dissipation :

( l = 4 mm, TL = 45 °C) Ptot = 440 mW
( l = 4 mm, TL ≤ 25 °C) Ptot = 500 mW

1N4148 PDF Diode

External link : 1N4148 Datasheet search site

---

Part Number: G2A

Function: 50V, 2A, GLASS PASSIVATED JUNCTION RECTIFIER

Package: DO-204AP Type

Manufacturer: General Semiconductor

Images:

Description

G2A is 50V, 2A, Standard Sinterglass Diode, Rectifier.

A Glass Passivated Junction Rectifier, also known as a glass passivated diode, is a type of diode that is designed for rectifying electrical currents in electronic circuits. This diode is characterized by the presence of a glass passivation layer on its semiconductor junction. The glass passivation serves to protect the diode and improve its performance in various ways. Here are the key features and characteristics of a glass passivated junction rectifier:

1. Rectification: Like other diodes, a glass passivated junction rectifier is primarily used for rectifying alternating current (AC) into direct current (DC). It allows current to flow in one direction while blocking it in the opposite direction.

Features

1. High temperature metallurgically bonded construction

2. Glass passivated cavity-free junction

3. Hermetically sealed package 2.0 Ampere operation at TA=75°C with no thermal runaway

4. Typical IR less than 0.1mA

5. Capable of meeting environmental standards of MIL-S-19500

Mechanical Data :

1. Case : JEDEC DO-204AP solid glass body

2. Terminals : Solder plated axial leads, solderable per MIL-STD-750, Method 2026

3. Polarity : Color band denotes cathode end

4. Mounting Position : Any

5. Weight : 0.02 ounce, 0.56 gram

 

G2A PDF Datasheet