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. 145-2285
Mfr. Part No.TZX5V1B-TR
BrandVishay
$0.033
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
$0.116
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. 145-2655
Mfr. Part No.1N5221B-TR
BrandVishay
$0.033
Each (On a Reel of 10000)
units
Single 2.4V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 30Ω 100µA 3.9mm 1.7mm
RS Stock No. 811-5933
Mfr. Part No.1N5221B-TR
BrandVishay
$0.061
Each (In a Pack of 50)
units
Single 2.4V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 30Ω 100µA 3.9mm 1.7mm
RS Stock No. 710-4112
Mfr. Part No.BZG03C130TR
BrandVishay
$0.494
Each (In a Pack of 20)
units
Single 130V Surface Mount 1 3 W DO-214AC (SMA) Voltage Regulator 6% 2 5mA 300Ω 1µA 4.5mm -
RS Stock No. 145-2134
Mfr. Part No.BZG03C130TR
BrandVishay
$0.238
Each (On a Reel of 1500)
units
Single 130V Surface Mount 1 3 W DO-214AC (SMA) Voltage Regulator 6% 2 5mA 300Ω 1µA 4.5mm -
RS Stock No. 173-0710
Mfr. Part No.Z4KE100A-E3/73
BrandVishay
$0.373
Each (On a Tape of 5500)
units
Single 100V Through Hole 1 1.5 W DO-204AL Voltage Regulator 5% 2 5mA 500Ω 500nA 5.2mm 2.7mm
RS Stock No. 813-3732
Mfr. Part No.Z4KE100A-E3/54
BrandVishay
$0.468
Each (In a Pack of 20)
units
Single 100V Through Hole 1 1.5 W DO-204AL Voltage Regulator 5% 2 5mA 500Ω 500nA 5.2mm 2.7mm
RS Stock No. 710-4294
Mfr. Part No.MMSZ5240B-HE3-08
BrandVishay
$0.072
Each (In a Pack of 100)
units
Single 10V Surface Mount 1 500 mW SOD-123 - 5% 2 20mA 17Ω 3µA 2.85mm -
RS Stock No. 145-2139
Mfr. Part No.MMSZ5240B-HE3-08
BrandVishay
$0.038
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 500 mW SOD-123 - 5% 2 20mA 17Ω 3µA 2.85mm -
RS Stock No. 811-5973
Mfr. Part No.1N5234B-TR
BrandVishay
$0.051
Each (In a Pack of 250)
units
Single 6.2V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 5µA 3.9mm 1.7mm
RS Stock No. 159-6587
Mfr. Part No.TZX5V1A-TR
BrandVishay
$0.033
Each (On a Reel of 10000)
units
Single 4.9V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 818-5095
Mfr. Part No.TZX5V1A-TR
BrandVishay
$0.035
Each (In a Pack of 200)
units
Single 4.9V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 177-7396
Mfr. Part No.1N5234B-TR
BrandVishay
$0.035
Each (On a Reel of 10000)
units
Single 6.2V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 5µA 3.9mm 1.7mm
RS Stock No. 145-2658
Mfr. Part No.1N5228B-TR
BrandVishay
$0.033
Each (On a Reel of 10000)
units
Single 3.9V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 23Ω 10µA 3.9mm 1.7mm
RS Stock No. 812-8522
Mfr. Part No.BZX55B16-TR
BrandVishay
$0.052
Each (In a Pack of 250)
units
Single 16V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 40Ω 2µA 3.9mm 1.7mm
RS Stock No. 918-9323
Mfr. Part No.SML4746-E3/61
BrandVishay
$0.215
Each (On a Reel of 1800)
units
Single 18V Surface Mount 1 1 W SMA - 10% 2 14mA 20Ω 5µA 4.5mm -
RS Stock No. 159-6523
Mfr. Part No.BZX55B16-TR
BrandVishay
$0.035
Each (On a Reel of 10000)
units
Single 16V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 40Ω 2µA 3.9mm 1.7mm
RS Stock No. 165-7033
Mfr. Part No.1N4764A-TR
BrandVishay
$0.053
Each (On a Reel of 5000)
units
Single 100V Through Hole 1 1.3 W DO-41 General Purpose 5% 2 2.5mA 350Ω 5µA 4.1mm 2.6mm
RS Stock No. 918-9528
Mfr. Part No.BZX85C18-TAP
BrandVishay
$0.06
Each (On a Reel of 5000)
units
Single 18V Through Hole 1 1.3 W DO-41 Voltage Regulator 6% 2 15mA 20Ω 500nA 4.1mm 2.5mm