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 Width
RS Stock No. 169-9132
Mfr. Part No.1N4752A R0
MYR0.391
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 2.7mm
RS Stock No. 687-5484
Mfr. Part No.1N4752A R0
MYR1.744
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 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 1.7mm
RS Stock No. 169-9128
Mfr. Part No.1N4747A R0
MYR0.391
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 2.7mm
RS Stock No. 169-9126
Mfr. Part No.1N4742A R0
MYR0.374
Each (On a Tape of 5000)
units
Single 12V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 21mA 5µA 5.2mm 2.7mm
RS Stock No. 146-2264
Mfr. Part No.1N4749A R0
MYR0.374
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 2.7mm
RS Stock No. 796-5689
Mfr. Part No.BZT52C5V6 RH
MYR0.218
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 1.7mm
RS Stock No. 170-4201
Mfr. Part No.BZT52B10 RH
MYR0.187
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω - 2.7mm 1.7mm
RS Stock No. 687-5465
Mfr. Part No.1N4747A R0
MYR1.35
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 2.7mm
RS Stock No. 796-9937
Mfr. Part No.BZT52B10 RH
MYR0.578
Each (In a Pack of 250)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω - 2.7mm 1.7mm
RS Stock No. 687-5459
Mfr. Part No.1N4742A R0
MYR1.35
Each (In a Pack of 50)
units
Single 12V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 21mA 5µA 5.2mm 2.7mm
RS Stock No. 687-5478
Mfr. Part No.1N4749A R0
MYR1.714
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 2.7mm
RS Stock No. 170-4224
Mfr. Part No.BZT52B4V7 RH
MYR0.158
Each (On a Reel of 3000)
units
Single 4.7V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 80Ω 2.7µA 2.7mm 1.7mm
RS Stock No. 687-2898
Mfr. Part No.BZT55C4V7 L1
MYR0.548
Each (In a Pack of 100)
units
Single 4.7V Surface Mount 1 500 mW Quadro MiniMelf Voltage Regulator 6% 2 5mA 60Ω 500nA 3.7mm 1.6mm
RS Stock No. 797-0094
Mfr. Part No.BZT52B4V7 RH
MYR0.497
Each (In a Pack of 250)
units
Single 4.7V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 80Ω 2.7µA 2.7mm 1.7mm
RS Stock No. 170-4232
Mfr. Part No.BZT52B75S RR
MYR0.18
Each (On a Reel of 3000)
units
Single 75V Surface Mount 1 200 mW SOD-323F General Purpose 2% 2 2mA 255Ω 45nA 1.8mm 1.35mm
RS Stock No. 169-9298
Mfr. Part No.BZV55C5V1 L1
MYR0.143
Each (On a Reel of 2500)
units
Single 5.1V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 5mA 35Ω 100nA 3.7mm -
RS Stock No. 170-3954
Mfr. Part No.BZT52C10 RH
MYR0.155
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 5% 2 5mA 20Ω 180nA 2.7mm 1.7mm
RS Stock No. 170-4211
Mfr. Part No.BZT52B2V7 RH
MYR0.15
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 1.7mm
RS Stock No. 687-5507
Mfr. Part No.BZD27C100P R3
MYR1.29
Each (In a Pack of 25)
units
Single 100V Surface Mount 1 800 mW Sub SMA Voltage Regulator 6% 2 4mA 200Ω 1µA 2.9mm 1.9mm