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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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In Stock Fairchild Semiconductor Silicon Junction, Single, 400 mA, 2-Pin 100 V DO-35 1N4148 RS Stock No. 842-8002 Mfr. Part No. 1N4148 Subtotal (1 box of 2000 units) £22.00(exc. VAT) £0.011/unit Quantity	Fairchild Semiconductor	Single	-	400mA	Silicon Junction	Through Hole	-	-	Silicon Junction	-	DO-35	-	-	2	-	-65°C	175°C	4.56mm	1V	100V	500mW	4A	4ns	-	-	1.91mm	1N4x48	No	-
In Stock onsemi Silicon Junction, Single, 200 mA, 2-Pin 250 V SOD-323 BAS21HT1G RS Stock No. 792-5492 Mfr. Part No. BAS21HT1G Subtotal (1 pack of 100 units) £3.90(exc. VAT) £0.039/unit Quantity	onsemi	Single	-	200mA	Silicon Junction	Surface	-	-	Silicon Junction	-	SOD-323	-	-	2	-	-55°C	150°C	1.8mm	1.25V	250V	-	2.5A	50ns	-	-	1mm	BAS21	No	-
In Stock DiodesZetex Silicon Junction, Single, 250 mA, 2-Pin 80 V SOD-523 RS Stock No. 708-2172P Mfr. Part No. 1N4448HWT-7 Subtotal 50 units (supplied on a continuous strip) £5.20(exc. VAT) £0.104/unit Quantity	DiodesZetex	Single	-	250mA	Silicon Junction	Surface	-	-	Silicon Junction	-	SOD-523	-	-	2	-	-65°C	150°C	1.7mm	1.25V	80V	150mW	2A	4ns	-	-	1.35mm	-	No	-
In Stock DiodesZetex Low Leakage Diode, 215 mA, 2-Pin 130 V SOD-123 BAV116WQ-7-F RS Stock No. 246-7451 Mfr. Part No. BAV116WQ-7-F Subtotal (1 pack of 25 units) £2.475(exc. VAT) £0.099/unit Quantity	DiodesZetex	-	-	215mA	Low Leakage Diode	Surface	-	-	-	-	SOD-123	-	-	2	-	-55°C	150°C	1.7mm	1.25V	130V	250mW	4A	3μs	-	-	3.85mm	BAV116WQ	RoHS	-
In Stock onsemi Switching Diode, Single, 200 A, 3-Pin 100 V SOT-23 BAS16LT3G RS Stock No. 781-3910 Mfr. Part No. BAS16LT3G Subtotal (1 tape of 200 units) £6.00(exc. VAT) £0.03/unit Quantity	onsemi	Single	-	200A	Switching Diode	Surface	-	-	Silicon Junction	-	SOT-23	-	-	3	-	-55°C	150°C	3.04mm	1.25V	100V	225mW	500mA	6ns	-	-	1.01mm	BAS16L	No	-
Last RS stock onsemi Silicon Junction, Single, 2 A, 2-Pin 400 V DO-214AC RS Stock No. 781-1030P Mfr. Part No. MURA140T3G Subtotal 25 units (supplied on a continuous strip) £1.35(exc. VAT) £0.054/unit Quantity	onsemi	Single	-	2A	Silicon Junction	Surface	-	-	Silicon Junction	-	DO-214AC	-	-	2	-	-65°C	175°C	4.57mm	1.1V	400V	-	35A	65ns	-	-	2.05mm	-	No	-
In Stock onsemi Silicon Junction, Single, 1 A, 2-Pin 600 V DO-214AC RS1J RS Stock No. 761-3391 Mfr. Part No. RS1J Subtotal (1 pack of 50 units) £9.85(exc. VAT) £0.197/unit Quantity	onsemi	Single	-	1A	Silicon Junction	Surface	-	-	Silicon Junction	-	DO-214AC	-	-	2	-	-55°C	150°C	4.75mm	1.3V	600V	1.19W	30A	250ns	-	-	2.2mm	-	No	-
Last RS stock ROHM Switching Diode, Isolated, 225 mA, 2-Pin 90 V SOD-523 1SS400SMFHT2R RS Stock No. 215-9559 Mfr. Part No. 1SS400SMFHT2R Subtotal (1 pack of 50 units) £6.45(exc. VAT) £0.129/unit Quantity	ROHM	Isolated	-	225mA	Switching Diode	Surface	-	-	Switching Diode	-	SOD-523	-	-	2	-	-55°C	150°C	1.7mm	1.2V	90V	-	500mA	4ns	-	-	0.7mm	-	No	-
In Stock Infineon Silicon Junction, Single, 80 A, 2-Pin 650 V TO-220 RS Stock No. 145-8760 Mfr. Part No. IDP40E65D2XKSA1 Subtotal (1 tube of 50 units) £61.50(exc. VAT) £1.23/unit Quantity	Infineon	Single	-	80A	Silicon Junction	Through Hole	-	-	Silicon Junction	-	TO-220	-	-	2	-	-40°C	175°C	10.2mm	2.2V	650V	200W	250A	83ns	-	-	15.95mm	-	No	-
Temporarily out of stock STMicroelectronics Switching Diode, Isolated, 45 A, 4-Pin 1200 V ISOTOP STTH9012TV2 RS Stock No. 810-7345 Mfr. Part No. STTH9012TV2 Subtotal (1 unit) £19.19(exc. VAT) £19.19/unit Quantity	STMicroelectronics	Isolated	-	45A	Switching Diode	Panel	-	-	Silicon Junction	-	ISOTOP	-	-	4	-	-65°C	150°C	38.2mm	1.9V	1200V	-	420A	50ns	-	-	12.2mm	-	No	-
In Stock DiodesZetex Silicon Junction, Single, 400 mA, 3-Pin 250 V SOT-23 RS Stock No. 738-4803P Mfr. Part No. BAS21-7-F Subtotal 200 units (supplied on a reel) £11.60(exc. VAT) £0.058/unit Quantity	DiodesZetex	Single	-	400mA	Silicon Junction	Surface	-	-	Silicon Junction	-	SOT-23	-	-	3	-	-65°C	150°C	2.9mm	1.25V	250V	250mW	2.5A	4ns	-	-	1.1mm	BAS21	No	-
Currently unavailable Vishay Diode, Stud Anode, 2-Pin DO-203AB VS-85HFR60 RS Stock No. 817-2548P Mfr. Part No. VS-85HFR60 Subtotal 1 unit (supplied in a bag) £10.79(exc. VAT) £10.79/unit Quantity	Vishay	Stud Anode	-	-	Diode	Screw, Screw	-	-	-	-	DO-203AB	-	-	2	-	-40°C	125°C	36.5mm	1.75V	-	-	1800A	500ns	-	15.1mm	17.35mm	85HFR	JEDEC JS709A, RoHS	-
In Stock onsemi Silicon Junction, Single, 3 A, 2-Pin 50 V DO-201AD RS Stock No. 774-3329 Mfr. Part No. 1N5400G Subtotal (1 pack of 10 units) £1.84(exc. VAT) £0.184/unit Quantity	onsemi	Single	-	3A	Silicon Junction	Through Hole	-	-	Silicon Junction	-	DO-201AD	-	-	2	-	-65°C	150°C	9.5mm	1V	50V	-	200A	-	-	-	9.5mm	-	No	-
In Stock STMicroelectronics Switching Diode, Common Cathode, 30 A, 3-Pin 200 V TO-247 STTH30W02CW RS Stock No. 829-0478 Mfr. Part No. STTH30W02CW Subtotal (1 pack of 5 units) £9.15(exc. VAT) £1.83/unit Quantity	STMicroelectronics	Common Cathode	-	30A	Switching Diode	Through Hole	-	-	Silicon Junction	-	TO-247	-	-	3	-	-65°C	175°C	15.75mm	1.4V	200V	-	140A	20ns	-	-	20.15mm	-	No	-
In Stock onsemi Silicon Junction, Single, 1 A, 2-Pin 50 V SMA RS Stock No. 739-0537P Mfr. Part No. S1A Subtotal 10 units (supplied on a continuous strip) £0.74(exc. VAT) £0.074/unit Quantity	onsemi	Single	-	1A	Silicon Junction	Surface	-	-	Silicon Junction	-	SMA	-	-	2	-	-65°C	150°C	4.6mm	1.1V	50V	-	30A	3ns	-	-	2.4mm	-	No	-
In Stock onsemi Silicon Junction, Common Cathode, 200 mA, 3-Pin 100 V SOT-23 BAV70LT3G RS Stock No. 690-0013 Mfr. Part No. BAV70LT3G Subtotal (1 pack of 25 units) £0.725(exc. VAT) £0.029/unit Quantity	onsemi	Common Cathode	-	200mA	Silicon Junction	Surface	-	-	Silicon Junction	-	SOT-23	-	-	3	-	-55°C	150°C	2.9mm	1.25V	100V	225mW	500mA	6ns	-	-	0.94mm	-	No	-
In Stock onsemi Switching Diode, Single, 1 A, 2-Pin 200 V DO-214BA GF1D RS Stock No. 903-4251 Mfr. Part No. GF1D Subtotal (1 pack of 50 units) £13.75(exc. VAT) £0.275/unit Quantity	onsemi	Single	-	1A	Switching Diode	Surface	-	-	Silicon Junction	-	DO-214BA	-	-	2	-	-65°C	175°C	4.7mm	1.1V	200V	1.8W	30A	2μs	-	-	2.7mm	-	No	-
Last RS stock Vishay Switching Diode, Single, 6 A, 2-Pin 200 V DO-201AD MUR420-E3/54 RS Stock No. 811-9880 Mfr. Part No. MUR420-E3/54 Subtotal (1 pack of 10 units) £2.99(exc. VAT) £0.299/unit Quantity	Vishay	Single	-	6A	Switching Diode	Through Hole	-	-	Silicon Junction	-	DO-201AD	-	-	2	-	-65°C	175°C	9.5mm	890mV	200V	-	150A	35ns	-	-	5.3mm	-	No	-
In Stock onsemi Silicon Junction, Series, 215 mA, 3-Pin 100 V SOT-23 SBAV99LT1G RS Stock No. 781-5168 Mfr. Part No. SBAV99LT1G Subtotal (1 pack of 50 units) £1.60(exc. VAT) £0.032/unit Quantity	onsemi	Series	-	215mA	Silicon Junction	Surface	-	-	Silicon Junction	-	SOT-23	-	-	3	-	-65°C	150°C	3.04mm	1.25V	100V	225mW	500mA	6ns	-	-	1.01mm	-	No	-
In Stock Nexperia Switching Diode, Common Cathode, 215 mA, 3-Pin 75 V SOT-23 BAV170,215 RS Stock No. 219-4299 Mfr. Part No. BAV170,215 Subtotal (1 pack of 200 units) £10.80(exc. VAT) £0.054/unit Quantity	Nexperia	Common Cathode	-	215mA	Switching Diode	Surface	-	-	Low Leakage	-	SOT-23	-	-	3	-	-55°C	150°C	2.9mm	1.25V	75V	250mW	4A	0.8ns	-	-	1.1mm	BAV170	No	-