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What is a Small Signal Diode?

A small signal diode is a small non-linear semiconductor which is often used in electronic circuits where high frequencies or small currents are involved in television, radio and digital logic circuits. Small signal diodes are smaller in size compared to regular power diodes. The PN junction of a small signal diode is usually encapsulated in glass in order to protect it and generally has a black or red band at one end of its body identifying it as the cathode end of the terminal. Small signal diodes have lower current and power ratings in comparison to rectifier diodes but can function better in high frequency applications or in switching and clipping applications which deal with short-duration pulse waveforms.

Types of Small Signal Diodes

There are several different kinds of small signal diodes. At Future Electronics we stock many of the most common types categorized by maximum reverse voltage, forward voltage, maximum average forward current, power dissipation, packaging type and maximum reverse recovery time. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common sizes for maximum reverse voltage are 100 V, 120 V, 150 V and 200V. We also carry small signal diodes with maximum reverse voltage up to 600 V. Average forward current can be up to 50 A, with the most common sizes being 200 mA, 300 mA and 500 mA.

Small Signal Diodes from Future Electronics

Future Electronics has a complete selection of small signal diodes from several manufacturers that can be used as a small signal Schottky diode or any other type of small signal diode. Simply choose from the small signal diode technical attributes below and your search results will quickly be narrowed in order to match your specific small signal diode application needs.

If you have a preferred brand, we deal with several manufacturers such as Diodes Inc., Fairchild, Central Semiconductor, Littelfuse, STMicroelectronics and Vishay, among other diode manufacturers. You can easily refine your small signal diode product search results by clicking your preferred small signal diode brand below from our list of manufacturers.

Applications for Small Signal Diodes:

As previously mentioned, small signal diodes are often used in high frequency applications or in switching and clipping applications which deal with short-duration pulse waveforms. Small signal diodes are also found as a switch in rectifiers, snubbers, limiters, and wave-shaping circuits. Yet another application for small signal diodes is to create a regulated voltage supply where diodes are connected together in series in order to provide a constant DC voltage across the diode combination.

Choosing the Right Small Signal Diode:

When you are looking for the right small signal diodes, you can filter the results by various attributes with the FutureElectronics.com parametric search: by Maximum Reverse Recovery Time (1 ns, 4 ns, 6 ns, 50 ns,…), Maximum Average Forward Current (up to 50 A) and Forward Voltage (from 500 mV to 1 kV) to name a few. You will be able to find the right small signal Schottky diode or any other type of small signal diode for any of your circuits.

Small Signal Diodes in Production Ready Packaging or R&D Quantities

If the quantity of small signal diodes required is less than a full reel, we offer to customers many of our small signal diode products in tube, tray or individual quantities that will help you avoid unneeded surplus.

In addition, Future Electronics offers its clients a unique bonded inventory program designed to eliminate potential problems that could arise from an unpredictable supply of products containing raw metals and products with long or erratic lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.



Small Signal Diodes by Primary Attributes:

By Average Forward Current-Max




By Power Dissipation




Featured Small Signal Diode Products


Manufacturer Part Number Description
Diodes Inc. 1N5260B-T ZENER DIODE DO-35 500MW 43V ROHS 10K
Diodes Inc. MMBD4448HW-7-F MMBD4448HW Series 80 V 250 mA Surface Mount Switching Diode - SC-70-3
Fairchild 1N914BTR 1N914B Series 500 mW 100 V Max Reverse Voltage 0.5 A Small Signal Diode - DO-35
Fairchild FDLL4148 FDLL4148 Series 500 mW 100 V Max Reverse Voltage 0.2 A Small Signal Diode -LL-34
Fairchild 1N4148WS 1N4148WS Series 200 mW 100 V Max Reverse Voltage Small Signal Diode - SOD-323F
Fairchild 1N4148 1N4148 Series 500 mW 100 V Max Reverse Voltage 200 mA Small Signal Diode -DO-35
Fairchild 1N914TR 1N914 Series 500 mW 100 V Max Reverse Voltage 0.5 A Small Signal Diode - DO-35
Fairchild BAS16 BAS16 Series 350 mW 85 V Max Reverse Voltage 200 mA Small Signal Diode -SOT-23-3
Fairchild 1N4448TR 1N4448 Series 500 mW 100 V Max Reverse Voltage 200 mA Small Signal Diode - DO-35
Fairchild 1N914B 1N914B Series 500 mW 100 V Max Reverse Voltage 0.5 A Small Signal Diode - DO-35
Fairchild 1N914ATR 1N914 Series 500 mW 100 V Max Reverse Voltage Small Signal Diode - DO-35
Fairchild 1N914 1N914 Series 500 mW 100 V Max Reverse Voltage Small Signal Diode - DO-35
Fairchild 1N459A 1N459A Series 500 mW 200 V Max Reverse Voltage 0.5 A Small Signal Diode - DO-35
Fairchild BAV74 BAV Series 350 mW 50 V Max Reverse Voltage 200 mA Small Signal Diode-SOT-23-3
Fairchild BAW76 BAW76 Series 1 V 300 mA 500 mW Through Hole Small Signal Diode - DO-35
Littelfuse 65800001109 6580000110
Littelfuse 0242.050UAT1 242.050 -CT
STMicroelectronics SM15T15A 1500 W 27.2 V Uni Directional Transient Voltage Suppressor Diode - DO-214AB
STMicroelectronics SM15T68A 1500 W Uni Directional Transient Voltage Suppressor Diode - DO-214AB
Vishay BAT54WS-V-GS08 BAT54WS-V Series 30 V 200 mA Small Signal Schottky Diode - SOD-323
Vishay 1N5059TR AVALANCHE DIODE, 2A, 200V, SOD-57
Vishay MMBD7000-V-GS08 MMBD7000 Series SOT-23 Small 100V 100mA Signal Diode
Vishay SMCJ22A-E3/57T SMCJ Series 22 V Uni Directional Transient Voltage Suppressor Diode -DO-214AB
Vishay SMCJ16A-E3/57T SMCJ Series 16 V Uni Directional Transient Voltage Suppressor Diode -DO-214AB
Vishay SMCJ14CA-E3/57T SMCJ14 Series 17.2 V 1500 W SMT TRANSZORB® Transient Voltage Suppressor

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