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. 170-3480
Mfr. Part No.BZX84C15LT3G
$0.025
Each (On a Reel of 10000)
units
Single 15V Surface Mount 1 225 mW SOT-23 Voltage Regulator 5% 3 5mA 30Ω 50nA 3.04mm -
RS Stock No. 813-6728
Mfr. Part No.BZX84-A24,215
BrandNexperia
$0.337
Each (In a Pack of 20)
units
Single 24V Surface Mount 1 250 mW SOT-23 Voltage Regulator 5% 3 250mA - 5µA 3mm -
RS Stock No. 124-9922
Mfr. Part No.1N5357BRLG
$0.176
Each (On a Reel of 4000)
units
Single 20V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 65mA 500nA 8.89mm -
RS Stock No. 791-6179
Mfr. Part No.MMSZ4679T1G
$0.093
Each (In a Pack of 100)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 5µA 2.84mm -
RS Stock No. 162-9443
Mfr. Part No.MMSZ4679T1G
$0.046
Each (On a Reel of 3000)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 5µA 2.84mm -
RS Stock No. 544-3604
Mfr. Part No.BZX79-C5V6,113
BrandNexperia
$0.154
Each (In a Pack of 20)
units
Single 5.6V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 40Ω 1µA 4.25mm -
RS Stock No. 165-9753
Mfr. Part No.BZX84-A24,215
BrandNexperia
$0.33
Each (On a Reel of 3000)
units
Single 3.6V Surface Mount 1 250 mW SOT-23 Voltage Regulator 5% 3 250mA - 5µA 3mm -
RS Stock No. 791-6151
Mfr. Part No.MMBZ5256BLT1G
$0.037
Each (In a Pack of 200)
units
Single 30V Surface Mount 1 225 mW SOT-23 Voltage Regulator 5% 3 4.2mA 49Ω 100nA 3.04mm -
RS Stock No. 169-8570
Mfr. Part No.BZX85C5V6
$0.053
Each (In a Bag of 1000)
units
Single 5.6V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 45mA 1µA 5.2mm 2.72mm
RS Stock No. 145-2139
Mfr. Part No.MMSZ5240B-HE3-08
BrandVishay
$0.044
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. 103-5132
Mfr. Part No.1N5365BG
$0.19
Each (In a Box of 1000)
units
Single 36V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 30mA 160Ω 500nA 8.89mm 3.68mm
RS Stock No. 774-3293
Mfr. Part No.1N5351BG
$0.491
Each (In a Pack of 10)
units
Single 14V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 100mA 75Ω 1µA 8.89mm 3.68mm
RS Stock No. 654-7656
Mfr. Part No.1N5365BRLG
$0.37
Each (In a Pack of 5)
units
Single 36V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 30mA 11Ω 500nA 8.89mm -
RS Stock No. 113-8678
Mfr. Part No.BZX84C15LT1G
$0.039
Each (In a Pack of 300)
units
Single 15V Surface Mount 1 250 mW, 300 mW SOT-23 Voltage Regulator - 3 5mA 200Ω 50nA 3.04mm -
RS Stock No. 654-7628
Mfr. Part No.1N5357BRLG
$0.66
Each (In a Pack of 5)
units
Single 20V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 65mA 500nA 8.89mm -
RS Stock No. 544-4556
Mfr. Part No.BZV55-C15,115
BrandNexperia
$0.246
Each (In a Pack of 20)
units
Single 15V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 5mA 30Ω 50nA 3.7mm -
RS Stock No. 805-0987
Mfr. Part No.1N4739ATR
$0.109
Each (In a Pack of 100)
units
Single 9.1V Through Hole 1 1 W DO-41 General Purpose 5% 2 28mA 10µA 5.2mm 2.72mm
RS Stock No. 813-3732
Mfr. Part No.Z4KE100A-E3/54
BrandVishay
$0.491
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. 145-2899
Mfr. Part No.MMBZ5256BLT1G
$0.025
Each (On a Reel of 3000)
units
Single 30V Surface Mount 1 225 mW SOT-23 Voltage Regulator 5% 3 4.2mA 49Ω 100nA 3.04mm -
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
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