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. 843-1562
Mfr. Part No.1N4148
HK$0.277
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$0.047
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. 671-5477
Mfr. Part No.1N4148TR
HK$0.572
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$0.217
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. 842-8002
Mfr. Part No.1N4148
HK$0.118
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. 739-0290
Mfr. Part No.1N4148TA
HK$0.486
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. 842-8276
Mfr. Part No.1N4148
HK$0.052
Each (On a Reel of 2000)
units
- - - - - - - - - - - - - -
RS Stock No. 124-1307
Mfr. Part No.1N4148TR
HK$0.063
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. 796-9580
Mfr. Part No.BAS316WS RR
HK$0.25
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. 145-3058
Mfr. Part No.MR854G
HK$0.617
Each (In a Box of 500)
units
Single - Through Hole 1 - DO-41 Silicon Junction 1.25V 2 - -65 °C +125 °C - -
RS Stock No. 781-5843
Mfr. Part No.MR854G
HK$2.685
Each (In a Pack of 50)
units
Single - Through Hole 1 - DO-41 Silicon Junction 1.25V 2 - -65 °C +125 °C - -
RS Stock No. 145-2640
Mfr. Part No.BAV21W-E3-08
BrandVishay
HK$0.309
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. 625-5307
Mfr. Part No.MR852RLG
HK$3.94
Each
units
Single - Through Hole 1 - DO-201AD Silicon Junction 1.25V 2 - -65 °C +125 °C 9.65mm 5.33mm
RS Stock No. 146-2253
Mfr. Part No.1N4148 A0
HK$0.078
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. 652-7343
Mfr. Part No.1N4148 A0
HK$0.561
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. 710-4506
Mfr. Part No.BAV21W-E3-08
BrandVishay
HK$0.542
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. 145-3508
Mfr. Part No.MR852RLG
HK$0.597
Each (On a Reel of 1200)
units
Single - Through Hole 1 - DO-201AD Silicon Junction 1.25V 2 - -65 °C +125 °C 9.65mm 5.33mm
RS Stock No. 885-5353
Mfr. Part No.1N5408-T
HK$2.479
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. 145-3369
Mfr. Part No.MR852G
HK$0.617
Each (In a Box of 500)
units
Single - Through Hole 1 - DO-41 Silicon Junction 1.25V 2 - -65 °C +125 °C - -
RS Stock No. 781-5834
Mfr. Part No.MR852G
HK$1.684
Each (In a Pack of 50)
units
Single - Through Hole 1 - DO-41 Silicon Junction 1.25V 2 - -65 °C +125 °C - -