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. 813-3739
Mfr. Part No.Z4KE140A-E3/54
BrandVishay
€0.154
Each (In a Pack of 20)
units
Single 140V Through Hole 1 1.5 W DO-204AL Voltage Regulator 5% 2 5mA 900Ω 500nA 5.2mm 2.7mm
RS Stock No. 165-6935
Mfr. Part No.Z4KE140A-E3/54
BrandVishay
€0.153
Each (On a Reel of 5500)
units
Single 140V Through Hole 1 1.5 W DO-204AL Voltage Regulator 5% 2 5mA 900Ω 500nA 5.2mm 2.7mm
RS Stock No. 818-5562
Mfr. Part No.TZX10B-TR
BrandVishay
€0.012
Each (In a Pack of 200)
units
Single 10V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 25Ω 1µA 3.9mm 1.7mm
RS Stock No. 177-7451
Mfr. Part No.TZX6V2E-TR
BrandVishay
€0.014
Each (On a Reel of 10000)
units
Single 6.4V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 15Ω 1µA 3.9mm 1.7mm
RS Stock No. 818-5130
Mfr. Part No.TZX6V2E-TR
BrandVishay
€0.011
Each (In a Pack of 200)
units
Single 6.4V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 15Ω 1µA 3.9mm 1.7mm
RS Stock No. 813-3921
Mfr. Part No.ZPY47-TR
BrandVishay
€0.052
Each (In a Pack of 100)
units
Single 47V Through Hole 1 1.3 W DO-41 General Purpose 5% 2 10mA 80Ω 500nA 5.2mm 2.6mm
RS Stock No. 177-7457
Mfr. Part No.TZX10B-TR
BrandVishay
€0.016
Each (On a Reel of 10000)
units
Single 10V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 25Ω 1µA 3.9mm 1.7mm
RS Stock No. 145-2026
Mfr. Part No.ZPY47-TR
BrandVishay
€0.049
Each (On a Reel of 5000)
units
Single 47V Through Hole 1 1.3 W DO-41 General Purpose 5% 2 10mA 80Ω 500nA 5.2mm 2.6mm
RS Stock No. 165-2348
Mfr. Part No.SML4738-E3/61
BrandVishay
€0.12
Each (On a Reel of 1800)
units
Single 8.2V Surface Mount 1 1 W DO-214AC - 10% 2 31mA 4.5Ω 10µA 4.5mm -
RS Stock No. 634-1650
Mfr. Part No.SML4738-E3/61
BrandVishay
€0.13
Each (In a Pack of 5)
units
Single 8.2V Surface Mount 1 1 W DO-214AC - 10% 2 31mA 4.5Ω 10µA 4.5mm -
RS Stock No. 145-2285
Mfr. Part No.TZX5V1B-TR
BrandVishay
€0.024
Each (On a Reel of 10000)
units
Single 5V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 818-5099
Mfr. Part No.TZX5V1B-TR
BrandVishay
€0.061
Each (In a Pack of 200)
units
Single 5V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 813-3776
Mfr. Part No.ZM4734A-GS08
BrandVishay
€0.283
Each (On a Tape of 50)
units
Single 5.6V Surface Mount 1 1 W DO-213AB General Purpose 5% 2 45mA 10µA 5.2mm 2.6mm
RS Stock No. 145-2009
Mfr. Part No.ZM4734A-GS08
BrandVishay
€0.081
Each (On a Reel of 1500)
units
Single 5.6V Surface Mount 1 1 W DO-213AB General Purpose 5% 2 45mA 10µA 5.2mm 2.6mm
RS Stock No. 159-6571
Mfr. Part No.TZX13A-TR
BrandVishay
€0.022
Each (On a Reel of 10000)
units
Single 13V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 35Ω 1µA 3.9mm 1.7mm
RS Stock No. 812-8715
Mfr. Part No.BZX85B5V1-TR
BrandVishay
€0.102
Each (In a Pack of 200)
units
Single 5.1V Through Hole 1 1.3 W DO-41 General Purpose 2% 2 45mA 10Ω 1µA 4.1mm 2.6mm
RS Stock No. 177-7356
Mfr. Part No.BZX85B5V1-TR
BrandVishay
€0.047
Each (On a Reel of 5000)
units
Single 5.1V Through Hole 1 1.3 W DO-41 General Purpose 2% 2 45mA 10Ω 1µA 4.1mm 2.6mm
RS Stock No. 818-5061
Mfr. Part No.TZX3V9C-TR
BrandVishay
€0.053
Each (In a Pack of 200)
units
Single 4V Through Hole 1 500 mW DO-35 Voltage Regulator 3% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 159-6583
Mfr. Part No.TZX3V9C-TR
BrandVishay
€0.024
Each (On a Reel of 10000)
units
Single 4V Through Hole 1 500 mW DO-35 Voltage Regulator 3% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 818-4926
Mfr. Part No.TZX13A-TR
BrandVishay
€0.048
Each (In a Pack of 200)
units
Single 13V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 35Ω 1µA 3.9mm 1.7mm