Zener Diodes

A Zener diode is a type of semiconductor diode that is different to a normal diode as it allows current to flow from its anode to its cathode in either a forward or reverse direction, but only when exposed to enough voltage. Zener diodes have been designed to work reliably in the breakdown region, unlike normal diodes which would overheat. They are the most common and the handiest solutions to a number of needs in a circuit design.

Zener diodes are designed to change the direction of current flow once the voltage reaches a specific, defined voltage level. This also means that Zener diodes can operate continuously in a breakdown mode. The voltage level that that change a direction of flow is called Zener Voltage or Breakdown Voltage. It could be defined for specific diodes anywhere from 1.8 to 200 V.

Key attributes of a Zener diode are:

• Device configuration including a dual or common anode
• Type of Zener, including avalanche or voltage regulator
• Voltage tolerance
• Voltage drift with temperature
• Impedance (max)

What is a typical application of Zener diodes?
Zener diodes are used in all kinds of electronic equipment and are used to protect circuits from overvoltage and electrostatic discharge or for switching applications. They are one of the basic building blocks of electronic circuits.

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Description Price Diode Configuration Nominal Zener Voltage Mounting Type Number of Elements per Chip Maximum Power Dissipation Package Type Zener Type Zener Voltage Tolerance Pin Count Test Current Maximum Zener Impedance Maximum Reverse Leakage Current Length Diameter
RS Stock No. 463-808
Mfr. Part No.1N5359BG
SGD0.528
Each (In a Pack of 10)
units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89mm -
RS Stock No. 818-5070
Mfr. Part No.TZX4V3B-TR
BrandVishay
SGD0.035
Each (In a Pack of 200)
units
Single 4.2V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 438-2643
Mfr. Part No.BZX84-C6V2,215
BrandNexperia
SGD0.027
Each (On a Reel of 3000)
units
Single 6.2V Surface Mount 1 250 mW SOT-23 (TO-236AB) Voltage Regulator 5% 3 5mA 10Ω 3µA 3mm -
RS Stock No. 122-2861
Mfr. Part No.DDZ9699T-7
SGD0.093
Each (On a Reel of 3000)
units
Single 12V Surface Mount 1 150 mW SOD-523 General Purpose 5% 2 0.05mA - 50nA 1.3mm -
RS Stock No. 822-2413
Mfr. Part No.DDZ9699T-7
SGD0.125
Each (In a Pack of 100)
units
Single 12V Surface Mount 1 150 mW SOD-523 General Purpose 5% 2 0.05mA - 50nA 1.3mm -
RS Stock No. 159-6585
Mfr. Part No.TZX4V3B-TR
BrandVishay
SGD0.033
Each (On a Reel of 10000)
units
Single 4.2V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 654-7640
Mfr. Part No.1N5359BRLG
SGD0.608
Each (In a Pack of 5)
units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89mm -
RS Stock No. 103-3919
Mfr. Part No.1N5359BRLG
SGD0.181
Each (On a Reel of 4000)
units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89mm -
RS Stock No. 102-1396
Mfr. Part No.1N5359BG
SGD0.205
Each (In a Box of 1000)
units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89mm -
RS Stock No. 811-5942
Mfr. Part No.1N5223B-TR
BrandVishay
SGD0.036
Each (In a Pack of 50)
units
Single 2.7V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 30Ω 75µA 3.9mm 1.7mm
RS Stock No. 163-1949
Mfr. Part No.1SMA5914BT3G
SGD0.134
Each (On a Reel of 5000)
units
Single 3.6V Surface Mount 1 1.5 W SMA Voltage Regulator 5% 2 104.2mA 35.5µA 4.57mm -
RS Stock No. 103-5050
Mfr. Part No.1SMA5919BT3G
SGD0.134
Each (On a Reel of 5000)
units
Single 5.6V Surface Mount 1 500 mW SMA Voltage Regulator 5% 2 66.9mA 2.5µA 4.32mm -
RS Stock No. 792-5331
Mfr. Part No.1SMA5914BT3G
SGD0.412
Each (In a Pack of 20)
units
Single 3.6V Surface Mount 1 1.5 W SMA Voltage Regulator 5% 2 104.2mA 35.5µA 4.57mm -
RS Stock No. 145-2656
Mfr. Part No.1N5223B-TR
BrandVishay
SGD0.033
Each (On a Reel of 10000)
units
Single 2.7V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 30Ω 75µA 3.9mm 1.7mm
RS Stock No. 687-8149
Mfr. Part No.1SMA5919BT3G
SGD0.627
Each (In a Pack of 10)
units
Single 5.6V Surface Mount 1 500 mW SMA Voltage Regulator 5% 2 66.9mA 2.5µA 4.32mm -
RS Stock No. 136-4799
Mfr. Part No.BZX79-C3V0,133
BrandNexperia
SGD0.027
Each (On a Tape of 10000)
units
Single 3V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 600 Ω @ 1 mA - 4.25mm 1.85mm
RS Stock No. 759-8835
Mfr. Part No.BZX85C10
SGD0.066
Each (In a Pack of 100)
units
Single 10V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 25mA 500nA 5.2mm 2.72mm
RS Stock No. 544-3525
Mfr. Part No.BZX79-C3V0,113
BrandNexperia
SGD0.162
Each (In a Pack of 20)
units
Single 3V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 95Ω 10µA 4.25mm -
RS Stock No. 856-342
Mfr. Part No.BZY93C24
BrandMagnatec
SGD17.82
Each
units
Single 24V Panel Mount 1 20 W DO-4 General Purpose 20% 2 500mA 50µA 31.8mm -
RS Stock No. 738-5042
Mfr. Part No.MMSZ5230B-7-F
SGD0.122
Each (In a Pack of 100)
units
Single 4.7V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 20mA 19Ω 5µA 2.85mm -
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