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. 739-0290
Mfr. Part No.1N4148TA
HK$0.521
Each (In a Pack of 20)
units
Single 400mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF -65 °C +175 °C 4.56mm -
RS Stock No. 796-9580
Mfr. Part No.BAS316WS RR
HK$0.495
Each (In a Pack of 250)
units
Single 250mA Surface Mount 1 75V SOD-323 - 1.25V 2 1.5pF - +150 °C 1.8mm 1.4mm
RS Stock No. 124-1307
Mfr. Part No.1N4148TR
HK$0.081
Each (On a Reel of 10000)
units
Single 400mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF -65 °C +175 °C 4.56mm 1.91mm
RS Stock No. 842-8002
Mfr. Part No.1N4148
HK$0.18
Each (In a Box of 2000)
units
Single 300mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF - +175 °C - -
RS Stock No. 843-1562
Mfr. Part No.1N4148
HK$0.197
Each (In a Pack of 250)
units
Single 300mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF - +175 °C - -
RS Stock No. 124-1312
Mfr. Part No.1N4148TA
HK$0.108
Each (On a Reel of 5000)
units
Single 400mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF -65 °C +175 °C 4.56mm -
RS Stock No. 842-8276
Mfr. Part No.1N4148
HK$0.052
Each (On a Reel of 2000)
units
- - - - - - - - - - - - - -
RS Stock No. 671-5477
Mfr. Part No.1N4148TR
HK$0.548
Each (In a Pack of 20)
units
Single 400mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF -65 °C +175 °C 4.56mm 1.91mm
RS Stock No. 170-4134
Mfr. Part No.BAS316WS RR
HK$0.341
Each (On a Reel of 3000)
units
Single 250mA Surface Mount 1 75V SOD-323 Silicon Junction 1.25V 2 1.5pF - +150 °C 1.8mm 1.4mm
RS Stock No. 145-2640
Mfr. Part No.BAV21W-E3-08
BrandVishay
HK$0.338
Each (On a Reel of 3000)
units
Single 200mA Surface Mount 1 200V SOD-123 Silicon Junction 1.25V 2 - -65 °C +150 °C 2.85mm 1.7mm
RS Stock No. 710-4506
Mfr. Part No.BAV21W-E3-08
BrandVishay
HK$0.854
Each (In a Pack of 100)
units
Single 200mA Surface Mount 1 200V SOD-123 - 1.25V 2 - -65 °C +150 °C 2.85mm 1.7mm
RS Stock No. 625-5307
Mfr. Part No.MR852RLG
HK$4.40
Each
units
Single - Through Hole 1 - DO-201AD Silicon Junction 1.25V 2 - -65 °C +125 °C 9.65mm 5.33mm
RS Stock No. 652-7343
Mfr. Part No.1N4148 A0
HK$0.638
Each (In a Pack of 500)
units
Single 150mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF -65 °C +150 °C 5.08mm 2.3mm
RS Stock No. 146-2253
Mfr. Part No.1N4148 A0
HK$0.139
Each (On a Tape of 5000)
units
Single 150mA Through Hole 1 100V DO-35 Silicon Junction 1V 2 4pF -65 °C +150 °C 5.08mm 2.3mm
RS Stock No. 885-5353
Mfr. Part No.1N5408-T
HK$2.77
Each (In a Pack of 50)
units
Single - Through Hole 1 - DO-201AD Silicon Junction - 2 - -65 °C +150 °C 9.5mm -
RS Stock No. 781-0974
Mfr. Part No.MUR180ERLG
HK$3.518
Each (In a Pack of 25)
units
Single - Through Hole 1 - DO-41 Silicon Junction 1.75V 2 - -65 °C +175 °C - -
RS Stock No. 168-7731
Mfr. Part No.STTH812FP
HK$14.018
Each (In a Tube of 50)
units
Single 8A Through Hole 1 1200V TO-220FPAC Silicon Junction 2.2V 2 12pF - +175 °C 10.4mm 4.6mm
RS Stock No. 748-0999
Mfr. Part No.UG1D-E3/54
BrandVishay
HK$2.868
Each (In a Pack of 10)
units
Single - Through Hole 1 - DO-204AL Silicon Junction 950mV 2 - -55 °C +150 °C 5.2mm -
RS Stock No. 165-2759
Mfr. Part No.UG1D-E3/54
BrandVishay
HK$1.611
Each (On a Reel of 5500)
units
Single - Through Hole 1 - DO-204AL Silicon Junction 950mV 2 - -55 °C +150 °C 5.2mm -
RS Stock No. 795-9035
Mfr. Part No.STTH812FP
HK$20.69
Each (In a Pack of 5)
units
Single 8A Through Hole 1 1200V TO-220FPAC - 2.2V 2 12pF - +175 °C 10.4mm 4.6mm