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. 169-9132
Mfr. Part No.1N4752A R0
MYR0.359
Each (On a Reel of 5000)
units
Single 33V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 7.5mA 45Ω 5µA 5.2mm -
RS Stock No. 687-5484
Mfr. Part No.1N4752A R0
MYR0.596
Each (In a Pack of 50)
units
Single 33V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 7.5mA 45Ω 5µA 5.2mm -
RS Stock No. 169-9128
Mfr. Part No.1N4747A R0
MYR0.359
Each (On a Tape of 5000)
units
Single 20V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 12.5mA 22Ω 5µA 5.2mm -
RS Stock No. 170-4201
Mfr. Part No.BZT52B10 RH
MYR0.143
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω - 2.7mm -
RS Stock No. 170-4002
Mfr. Part No.BZT52C5V6 RH
MYR0.13
Each (On a Reel of 3000)
units
Single 5.6V Surface Mount 1 500 mW SOD-123F General Purpose 5% 2 5mA 40Ω - 2.7mm -
RS Stock No. 687-5478
Mfr. Part No.1N4749A R0
MYR0.419
Each (In a Pack of 50)
units
Single 24V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 10.5mA 25Ω 5µA 5.2mm -
RS Stock No. 146-2264
Mfr. Part No.1N4749A R0
MYR0.308
Each (On a Reel of 5000)
units
Single 24V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 10.5mA 25Ω 5µA 5.2mm -
RS Stock No. 796-9937
Mfr. Part No.BZT52B10 RH
MYR0.235
Each (In a Pack of 250)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω - 2.7mm -
RS Stock No. 687-5459
Mfr. Part No.1N4742A R0
MYR0.702
Each (In a Pack of 50)
units
Single 12V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 21mA 5µA 5.2mm -
RS Stock No. 796-5689
Mfr. Part No.BZT52C5V6 RH
MYR0.197
Each (In a Pack of 250)
units
Single 5.6V Surface Mount 1 500 mW SOD-123F General Purpose 5% 2 5mA 40Ω - 2.7mm -
RS Stock No. 687-5465
Mfr. Part No.1N4747A R0
MYR0.378
Each (In a Pack of 50)
units
Single 20V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 12.5mA 22Ω 5µA 5.2mm -
RS Stock No. 169-9126
Mfr. Part No.1N4742A R0
MYR0.325
Each (On a Tape of 5000)
units
Single 12V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 21mA 5µA 5.2mm -
RS Stock No. 796-5620
Mfr. Part No.BZT52C47S RR
MYR0.163
Each (In a Pack of 250)
units
Single 47V Surface Mount 1 200 mW SOD-323F General Purpose 5% 2 2mA 170Ω 45nA 1.8mm -
RS Stock No. 170-4242
Mfr. Part No.BZX84C7V5 RF
MYR0.094
Each (On a Reel of 3000)
units
Single 7.5V Surface Mount 1 - SOT-23 General Purpose ±5% 3 5mA 80Ω 1µA 3.1mm -
RS Stock No. 169-9129
Mfr. Part No.1N4750A R0
MYR0.342
Each (On a Tape of 5000)
units
Single 27V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 9.5mA 35Ω 5µA 5.2mm -
RS Stock No. 687-5513
Mfr. Part No.BZD27C200P R3
MYR0.806
Each (In a Pack of 25)
units
Single 200V Surface Mount 1 800 mW Sub SMA Voltage Regulator 6% 2 4mA 750Ω 1µA 2.9mm -
RS Stock No. 169-9133
Mfr. Part No.1N4760A R0
MYR0.342
Each (On a Reel of 5000)
units
Single 68V Through Hole 1 1 W DO-41 - 5% 2 3.7mA 150Ω 1µA 5.2mm -
RS Stock No. 170-3999
Mfr. Part No.BZT52C5V1K RKG
MYR0.13
Each (On a Reel of 3000)
units
Single 5.1V Surface Mount 1 200 mW SOD-523F General Purpose 2% 2 5mA 60Ω 2µA 1.3mm -
RS Stock No. 687-5481
Mfr. Part No.1N4756A R0
MYR0.764
Each (In a Pack of 50)
units
Single 47V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 5.5mA 80Ω 5µA 5.2mm -
RS Stock No. 170-4211
Mfr. Part No.BZT52B2V7 RH
MYR0.143
Each (On a Reel of 3000)
units
Single 2.7V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 100Ω 18µA 2.7mm -