How Does Diode 1N4148 Work: Datasheet, Circuit
yunying Release time：2023-09-19 Page View：486
1N4148 Diode Rectifier Small Signal =< 200mA (Io), Any Speed 1V @ 10mA -65°C~175°C 5μA @ 75V Cut Tape (CT) DO-204AH, DO-35, Axial Through Hole
Today we're bringing you the datasheet pinout, features, datasheet, and application and more detailed information of 500mW High Speed Switching Diode 100 Volt 1N4148N.The 1N4148N features low saturation voltage and overtemperature protection.
1N4148 Description
What is 1n4148 diode？ A typical silicon switching signal diode is the 1N4148 . Due to its dependable features and affordable price, it is one of the most well-liked and durable switching diodes. The JEDEC terminology is used in its name. The 1N4148 has a reverse recovery time of no more than 4 ns and is helpful in switching applications up to approximately 100 MHz.
* Another question is how 1n4148 work?
The 1N4148 is a small signal diode made of semiconductor material, typically silicon, with a PN junction separating the P-type and N-type regions. In forward bias, with positive voltage at the anode and negative voltage at the cathode, current flows easily from the anode to the cathode. This occurs as the excess positively charged "holes" in the P-type material attract the negatively charged electrons from the N-type material. In reverse bias, with reversed voltage polarity, the PN junction acts as an insulator, restricting current flow by widening the depletion region and creating a high resistance barrier. The 1N4148 diode is commonly used for signal rectification and switching, allowing current to flow in one direction while blocking it in the reverse direction. This makes it suitable for converting AC signals into pulsating DC signals.
1N4148 Pinout
1N4148 Pinout
1N4148 CAD Model
1N4148 CAD Model
Symbol
Footprint
3D-model
1N4148 Features
Low saturation voltage
Overtemperature protection
Logical "0" input voltage up to 1.5 V (high noise immunity)
Total DC current up to 4A
1N4148 Applications
Drive DC motors
Drive stepping motors
In Robotics
1N4148 Alternatives
1N914: The 1N914 is a similar general-purpose switching diode that is often considered as an alternative to the 1N4148. It has comparable specifications and can be used in similar applications.
1N4448: The 1N4448 is another common alternative to the 1N4148. It is a high-speed switching diode with similar characteristics and can be used in various electronic circuits.
BAT54: The BAT54 is a dual-series switching diode that can be used as a substitute for the 1N4148 in certain applications. It offers low leakage current and fast switching speeds.
1N4001: If you require a diode for rectification purposes, the 1N4001 is a suitable alternative to the 1N4148. It is a general-purpose diode with a higher voltage rating and can handle higher current levels.
1N5819: The 1N5819 is a Schottky diode that can be used as an alternative to the 1N4148 in applications requiring fast switching and low forward voltage drop.
1N4148 Application Circuit
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1N4148 Circuit
1N4148 Package Dimension
Multiwatt-15 (Vertical, Bent and Staggered Leads)
1N4148 Signal Diode Datasheet
Please swipe to the last two part for Downloading 1N4148 datasheets, 1N4148 specifications and Product comparison.
1N914 vs 1N4148
1N914 vs 1N4148: What is the differenes?
The 1N914 and 1N4148 are both small signal diodes with similar electrical characteristics. They are often used interchangeably in many applications. However, there are slight differences between them:
- Voltage rating: The 1N914 has a lower maximum repetitive reverse voltage of 75V, while the 1N4148 has a slightly higher rating of 100V.
- Forward voltage drop: The forward voltage drop of the 1N4148 is typically around 0.6V, while the 1N914 has a slightly higher forward voltage drop of approximately 0.7V.
- Reverse recovery time: The 1N4148 generally has a shorter reverse recovery time compared to the 1N914, making it more suitable for high-frequency applications.
In most cases, these differences are minimal, and the choice between the two diodes depends on specific design requirements and availability.
Related articles
Specifications
- Manufacturer :
- onsemi
- Product Category :
- Diodes - Rectifiers - Single
- Average Rectified Current :
- 200mA
- Base Part Number :
- 1N4148
- Capacitance :
- 0F
- Capacitance @ Vr, F :
- 4pF @ 0V 1MHz
- Contact Plating :
- Tin
- Current :
- 4A
- Current - Average Rectified (Io) :
- 200mA
- Current - Reverse Leakage @ Vr :
- 5μA @ 75V
- Current Rating :
- 200mA
- Diameter :
- 1.91mm
- Diode Type :
- Standard
- Element Configuration :
- Single
- Factory Lead Time :
- 18 Weeks
- Forward Current :
- 200mA
- Forward Voltage :
- 1V
- Height :
- 4.56mm
- Lead Free :
- Lead Free
- Length :
- 4.56mm
- Lifecycle Status :
- ACTIVE (Last Updated: 4 days ago)
- Max Forward Surge Current (Ifsm) :
- 1A
- Max Operating Temperature :
- 175°C
- Max Power Dissipation :
- 500mW
- Max Repetitive Reverse Voltage (Vrrm) :
- 100V
- Max Reverse Voltage (DC) :
- 100V
- Max Surge Current :
- 4A
- Min Operating Temperature :
- -65°C
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Mount :
- Through Hole
- Mounting Type :
- Through Hole
- Number of Pins :
- 2
- Operating Temperature - Junction :
- -65°C~175°C
- Output Current :
- 200mA
- Outside Diameter :
- 1.85 mm
- Package / Case :
- DO-204AH, DO-35, Axial
- Packaging :
- Bulk
- Part Status :
- Active
- Peak Non-Repetitive Surge Current :
- 4A
- Peak Reverse Current :
- 5μA
- Polarity :
- Standard
- Power Dissipation :
- 500mW
- Published :
- 2015
- Radiation Hardening :
- No
- REACH SVHC :
- No SVHC
- Recovery Time :
- 4 ns
- Reverse Recovery Time :
- 4 ns
- Reverse Voltage :
- 100V
- RoHS Status :
- ROHS3 Compliant
- Speed :
- Small Signal =< 200mA (Io), Any Speed
- Supplier Device Package :
- DO-35
- Voltage :
- 100V
- Voltage - DC Reverse (Vr) (Max) :
- 100V
- Voltage - Forward (Vf) (Max) @ If :
- 1V @ 10mA
- Voltage - Rated DC :
- 100V
- Weight :
- 4.535924g
- Width :
- 1.91mm
Datasheets
- Datasheets
- 1N4148
Product comparison
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ImagePart NumberManufacturerToleranceVoltage - RatedProduct StatusPackage / CaseProduct CategoryView Compare
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DO-204AH, DO-35, Axial
Diodes - Rectifiers - Single
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DO-204AH, DO-35, Axial
Diodes - Rectifiers - Single
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DO-204AL, DO-41, Axial
Diodes - Rectifiers - Single
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DO-204AL, DO-41, Axial
Diodes - Rectifiers - Single
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Frequently Asked Questions
What type of diode is 1n4148?
The 1N4148 is a small signal diode. Specifically, it is a fast-switching diode. It is commonly used in low-power applications and high-frequency circuits.
Is 1n4148 a zener diode?
No, the 1N4148 is not a Zener diode. It is a regular signal diode. Zener diodes are designed to operate in the reverse-biased breakdown region, maintaining a specific voltage across the diode. The 1N4148 does not possess the characteristics of a Zener diode.
What is the 1n4148 diode used for?
The 1N4148 diode is used in various applications, including signal rectification, switching, and protection circuits. Due to its fast-switching capability and small size, it is commonly employed in high-frequency circuits, such as radio frequency (RF) applications and digital logic circuits.
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