Switching Diodes

A switching diode is a two terminal PN junction, often used in electronic systems to manage small voltages.


Switching Diode


A Switching Diode is commonly referred to as a “Signal Diode”, it is a semiconductor that can be used to switch signals or act as a rectifier at low voltages.


Within a circuit they can provide similar functionality to a physical switch, with the on/off state governed by the direction of the current flow. When there is forward current in the circuit (forward-bias), the switching diode effectively is a closed switch with low resistance, allowing current to flow. If the current of the circuit is reversed (reverse bias), the switching diode provides high resistance, preventing current flow up to a specified threshold.


Where are Switching Diodes used?


A switching diode can be used in low voltage applications that require fast switching and a high speed rectification. A diode can also be used as a circuit protection device to prevent reverse current damaging a device upstream of the switching diode, such as microcontroller.


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Description Price Diode Configuration Maximum Forward Current Mounting Type Number of Elements per Chip Maximum Reverse Voltage Package Type Diode Technology Maximum Forward Voltage Drop Pin Count Maximum Diode Capacitance Minimum Operating Temperature Maximum Operating Temperature Length Width
RS Stock No. 177-7386
Mfr. Part No.1N4937GP-E3/54
BrandVishay
HK$0.65
Each (On a Reel of 5500)
units
Single - Through Hole 1 - DO-204AL Silicon Junction - 2 - -65 °C +175 °C 5.2mm -
RS Stock No. 165-2871
Mfr. Part No.RS1A-E3/61T
BrandVishay
HK$0.851
Each (On a Reel of 1800)
units
Single 1A Surface Mount 1 50V SMA Silicon Junction 1.3V 2 - -55 °C +150 °C 4.5mm 2.79mm
RS Stock No. 177-7470
Mfr. Part No.LS4151GS08
BrandVishay
HK$0.179
Each (On a Tape of 12500)
units
- - - - - - - - - - - - - -
RS Stock No. 168-7252
Mfr. Part No.STTH2R06
HK$1.40
Each (On a Tape of 2000)
units
Single 2A Through Hole 1 600V DO-41 Silicon Junction 1.7V 2 - -40 °C +175 °C 5.2mm -
RS Stock No. 145-9621
Mfr. Part No.BAS1602VH6327XTSA1
BrandInfineon
HK$0.673
Each (On a Reel of 3000)
units
Isolated 200mA Surface Mount 3 80V SOT-363 (SC-88) Silicon Junction 1.25V 6 2pF - +150 °C 2mm 1.25mm
RS Stock No. 885-5511
Mfr. Part No.MMBD4148PLM-7
HK$1.755
Each (In a Pack of 50)
units
Common Cathode 300mA Surface Mount 5 75V DFN - 1.25V 6 2pF -65 °C +150 °C 1.67mm 1.67mm
RS Stock No. 751-4357
Mfr. Part No.ES2DA-13-F
HK$2.449
Each (In a Pack of 50)
units
Single 2A Surface Mount 1 200V SMA Silicon Junction 920mV 2 25pF -55 °C +150 °C 2.92mm 2.92mm
RS Stock No. 781-5228
Mfr. Part No.SMMBD914LT3G
HK$0.732
Each (In a Pack of 100)
units
Single 200mA Surface Mount 1 100V SOT-23 Silicon Junction 1V 3 4pF -55 °C +150 °C 3.04mm 1.4mm
RS Stock No. 921-1256
Mfr. Part No.US2JDF-13
HK$1.525
Each (In a Pack of 50)
units
Single 1A Surface Mount 1 600V D-FLAT - 1.7V 2 10pF -55 °C +150 °C 4.6mm 2.95mm
RS Stock No. 751-4708
Mfr. Part No.RS1A-13-F
HK$1.069
Each (On a Tape of 50)
units
Single 1A Surface Mount 1 50V SMA - 1.3V 2 15pF -65 °C +150 °C 4.6mm 2.92mm
RS Stock No. 751-4745
Mfr. Part No.RS3MB-13-F
HK$4.33
Each (In a Pack of 10)
units
Single 3A Stud 1 1000V SMB - 1.3V 2 50pF -65 °C +150 °C 4.57mm 3.94mm
RS Stock No. 122-1237
Mfr. Part No.UF1002-T
HK$0.542
Each (On a Reel of 5000)
units
Single 1A Through Hole 1 100V DO-41 Silicon Junction 1V 2 20pF -65 °C +150 °C 5.21mm -
RS Stock No. 829-2768
Mfr. Part No.STTH20R04FP
HK$17.06
Each (In a Pack of 2)
units
Single 20A Through Hole 1 400V TO-220FPAC - 1.7V 2 - - +175 °C 10.4mm 4.6mm
RS Stock No. 738-4803
Mfr. Part No.BAS21-7-F
HK$0.432
Each (On a Tape of 200)
units
Single - - 1 - - Silicon Junction - - - - - - -
RS Stock No. 145-2186
Mfr. Part No.BAV202-GS08
BrandVishay
HK$0.221
Each (On a Reel of 2500)
units
Single 250mA Surface Mount 1 200V Quadro Melf Silicon Junction 1V 2 - -65 °C +175 °C 3.5mm 1.7mm
RS Stock No. 171-3934
Mfr. Part No.DAN235UT106
BrandROHM
HK$0.657
Each (On a Reel of 3000)
units
2x Common Cathode Pair 10mA Surface Mount 2 35V SOD-323, UMD - 1V 3 1.2pF - +125 °C 2.2mm 1.35mm
RS Stock No. 151-3364
Mfr. Part No.BAS21H,115
BrandNexperia
HK$0.225
Each (On a Reel of 3000)
units
Single 200mA Surface Mount 1 200V SOD-123F - - 2 5pF -65 °C +150 °C 2.7mm 1.7mm
RS Stock No. 146-9362
Mfr. Part No.1SS380VMTE-17
BrandROHM
HK$0.287
Each (On a Reel of 3000)
units
Single 225mA Surface Mount 1 80V SOD-323FL - - 2 5pF - +150 °C 1.8mm 1.35mm
RS Stock No. 165-2975
Mfr. Part No.BAQ334-TR
BrandVishay
HK$0.38
Each (On a Reel of 2500)
units
Single 200mA Surface Mount 1 60V MicroMELF Silicon Junction 1V 2 - -65 °C +175 °C 2mm 1.2mm
RS Stock No. 751-4351
Mfr. Part No.ES2G-13-F
HK$2.99
Each (In a Pack of 25)
units
Single 2A Stud 1 400V SMB - 1.25V 2 25pF -55 °C +150 °C 4.57mm 3.94mm