
1N4148 Diode is a fast switching diode. It is fabricated in planar technology, and encapsulated in hermetically sealed leaded glass SOD27 (DO-35) packages.
In the blog today, we 'll introduce 1N4148 systematically from its pinout, features, applications to its equivalents, package, etc, some frequent asked questions are also listed below at the bottom of the page, thanks for reading and hope this is helpful!
TOP2 Electronic projects with Diode 1N4148.
Catalog
1N4148 Description
A diode is a device which allows current flow through only one direction. That is the current should always flow from the Anode to cathode. The cathode terminal can be identified by using a grey bar as shown in the picture above.
For 1N4148 Diode, the maximum current carrying capacity is 300mA it can withstand peaks up to 2A. The speciality of this diode is its fast recovery time of 8ns at a forward current of 10mA, hence this diode is used in places where fast switching are involved.
1N4148 Pin Configuration
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1N4148 | 1N4148 Pinout |
Pin Name | Description |
Anode | Current always Enters through Anode |
Cathode | Current always Exits through Cathode |
1N4148 Features
- Fast switching Diode
- Peak repetitive Reverse voltage is 100V
- RMS reverse voltage is 75V
- Peak forward surge current is 2A
- Forward continuous current If 300mA
- Reverse recovery time 8ns
- Available in DO-35 Package
1N4148 Applications
- Can be used to prevent reverse polarity problem
- Protect Power electronic switches that are operating with high switching frequency.
- Half Wave and Full Wave rectifiers
- Used as a protection device
- Current flow regulators
1N4148 CAD Models
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Part Symbol | Footprint | 3D Model |
1N4148 Package Outline
1N4148 Equivalent Diodes
1N914, IN914A, 1N914B, 1N916, 1N916A, 1N916B, 1N4448, 1N4448WS, 1N4448W, 1N4148WS
1N4148 Popularity by Region
1N4148 Market Price Analysis
Component Datasheet
1N4148 Datasheet
FAQ
First 1N4148 isn't Schottky diode. It's true it is a switching diode (fast) but not Schottky. |
A switching diode is suitable for switching a small signal of up to 100 mA, acting as a rectifier. In contrast, a rectifier diode is used for AC line rectification (from alternating current to direct current). Switching diodes are designed to handle a voltage of less than tens of volts. |
XNXXXX, this is the representation of semi-conducting bulk components of the American Standards Association. XXXX represents the model number, usually a string of numbers. N means PN junction. The number in front represents the number of PN junctions. For example, 1N4148 means that it has only one PN junction (ie diode), and 4148 is the model number. Similar to 1N4007, 1N4734 and the like are diodes. 2N means that there are two PN junctions, which are triodes or field effect transistors. For example, common 2N3904, 2N2222 and the like are triodes. 2N5515 is a field effect tube (N-channel JFET) Many 4N and 6N are photocouplers, such as 4N25, 6N137 and so on. |
1N4148 is a commonly used switching diode (normal forward current If: 150mA, maximum repetitive peak voltage Umax: 100V, reverse recovery time trr: 4ns). IN4007 is also a common rectifier diode (positive power constant forward current If:1A, maximum repetitive peak voltage Umax:1000V). So they are diodes with different characteristics. |
It plays the role of detection, freewheeling and rectification of small currents |
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LL4148 usually refers to the glass sealed cylindrical LL-34 package (SMD, no leads). 1N4148 usually refers to DO-35 glass seal, axial pin, plug-in. It can be braided or in bulk. |
Ordering & Quality
Photo | Mfr. Part # | Company | Description | Package | Qty | Pricing (USD) |
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1N4148-113 | Company:NXP USA Inc. | Remark:DIODE GEN PURP 100V 200MA ALF2 | Package:DO-204AH, DO-35, Axial | ![]() DataSheet |
In Stock:On Order Inquiry |
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1N4148-133 | Company:NXP USA Inc. | Remark:DIODE GEN PURP 100V 200MA ALF2 | Package:DO-204AH, DO-35, Axial | ![]() DataSheet |
In Stock:On Order Inquiry |
Price:
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1N4148-143 | Company:NXP USA Inc. | Remark:DIODE GEN PURP 100V 200MA ALF2 | Package:DO-204AH, DO-35, Axial | ![]() DataSheet |
In Stock:On Order Inquiry |
Price:
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1N4148TA | Company:ON Semiconductor | Remark:DIODE GEN PURP 100V 200MA DO35 | Package:DO-204AH, DO-35, Axial | ![]() DataSheet |
In Stock:150000 Inquiry |
Price:
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1N4148TR | Company:ON Semiconductor | Remark:DIODE GEN PURP 100V 200MA DO35 | Package:DO-204AH, DO-35, Axial | ![]() DataSheet |
In Stock:470000 Inquiry |
Price:
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1N4148W-13-F | Company:Diodes Incorporated | Remark:DIODE GEN PURP 100V 150MA SOD123 | Package:SOD-123 | ![]() DataSheet |
In Stock:140000 Inquiry |
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1N4148W-7-F | Company:Diodes Incorporated | Remark:DIODE GEN PURP 100V 300MA SOD123 | Package:SOD-123 | ![]() DataSheet |
In Stock:3069000 Inquiry |
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1N4148W-E3-08 | Company:Vishay Semiconductor Diodes Division | Remark:DIODE GEN PURP 75V 150MA SOD123 | Package:SOD-123 | ![]() DataSheet |
In Stock:93000 Inquiry |
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1N4148W-G3-18 | Company:Vishay Semiconductor Diodes Division | Remark:DIODE GEN PURP 75V 150MA SOD123 | Package:SOD-123 | ![]() DataSheet |
In Stock:30000 Inquiry |
Price:
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1N4148WS | Company:ON Semiconductor | Remark:DIODE GEN PURP 75V 150MA SOD323F | Package:SC-90, SOD-323F | ![]() DataSheet |
In Stock:186000 Inquiry |
Price:
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