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. 169-8569
Mfr. Part No.BZX85C18
$0.048
Each (In a Bag of 1000)
units
Single 18V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 20Ω 500nA 5.2mm 2.72mm
RS Stock No. 169-9139
Mfr. Part No.BZD27C47P R3
$0.189
Each (On a Reel of 1800)
units
Single 47V Surface Mount 1 800 mW Sub SMA Voltage Regulator 6% 2 10mA 45Ω 1µA 2.9mm -
RS Stock No. 687-5526
Mfr. Part No.BZD27C47P R3
$0.266
Each (In a Pack of 25)
units
Single 47V Surface Mount 1 800 mW Sub SMA Voltage Regulator 6% 2 10mA 45Ω 1µA 2.9mm -
RS Stock No. 103-3919
Mfr. Part No.1N5359BRLG
$0.176
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. 463-808
Mfr. Part No.1N5359BG
$0.523
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. 654-7640
Mfr. Part No.1N5359BRLG
$0.66
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. 102-1396
Mfr. Part No.1N5359BG
$0.20
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. 166-2747
Mfr. Part No.BZX85C5V1
$0.049
Each (In a Bag of 1000)
units
Single 5.1V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 45mA 10Ω 1µA 5.2mm 2.72mm
RS Stock No. 759-8848
Mfr. Part No.BZX85C18
$0.088
Each (In a Pack of 100)
units
Single 18V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 20Ω 500nA 5.2mm 2.72mm
RS Stock No. 759-8888
Mfr. Part No.BZX85C5V1
$0.103
Each (In a Pack of 100)
units
Single 5.1V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 45mA 10Ω 1µA 5.2mm 2.72mm
RS Stock No. 103-5049
Mfr. Part No.1N5341BRLG
$0.166
Each (On a Reel of 4000)
units
Single 6.2V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 200mA 1µA 8.89mm -
RS Stock No. 805-0072
Mfr. Part No.1N4744ATR
$0.103
Each (In a Pack of 100)
units
Single 15V Through Hole 1 1 W DO-41 General Purpose 5% 2 17mA 14Ω 5µA 5.2mm 2.72mm
RS Stock No. 170-3364
Mfr. Part No.1N5341BG
$0.204
Each (In a Bag of 1000)
units
Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89mm -
RS Stock No. 463-795
Mfr. Part No.1N5341BG
$0.52
Each (In a Pack of 10)
units
Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89mm -
RS Stock No. 687-8133
Mfr. Part No.1N5341BRLG
$0.425
Each (In a Pack of 10)
units
Single 6.2V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 200mA 1µA 8.89mm -
RS Stock No. 178-7620
Mfr. Part No.1N4744ATR
$0.054
Each (On a Reel of 3000)
units
Single 15V Through Hole 1 1 W DO-41 General Purpose 5% 2 17mA 14Ω 5µA 5.2mm 2.72mm
RS Stock No. 751-5032
Mfr. Part No.SMAZ18-13-F
$0.332
Each (In a Pack of 50)
units
Single 18V Surface Mount 1 1 W SMA Voltage Regulator 5% 2 25mA 15Ω 500nA 4.6mm -
RS Stock No. 169-0468
Mfr. Part No.UDZSTE-1720B
BrandROHM
$0.068
Each (On a Reel of 3000)
units
Single 20V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 85Ω 100nA 1.7mm -
RS Stock No. 774-3325
Mfr. Part No.1N5388BG
$0.481
Each (In a Pack of 10)
units
Single 200V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 5mA 480Ω 500nA 8.89mm 3.68mm
RS Stock No. 700-2684
Mfr. Part No.UDZSTE-1720B
BrandROHM
$0.244
Each (In a Pack of 10)
units
Single 20V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 85Ω 100nA 1.7mm -
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