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. 545-3308
Mfr. Part No.1SMB5913BT3G
R 4.75
Each (In a Pack of 25)
units
Single 3.3V Surface Mount 1 550 mW SMB Voltage Regulator 5% 2 113.6mA 10Ω 100µA 4.32mm -
RS stock no. 159-6497
Mfr. Part No.BZX85C33-TAP
BrandVishay
R 0.901
Each (On a Reel of 5000)
units
Single 33V Through Hole 1 1.3 W DO-41 Voltage Regulator 6% 2 8mA 35Ω 500nA 4.1mm -
RS stock no. 124-9923
Mfr. Part No.1N5363BRLG
R 2.074
Each (On a Reel of 4000)
units
Single 30V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 40mA 8 Ω, 140 Ω 500nA - 3.68mm
RS stock no. 800-8787
Mfr. Part No.1N5363BRLG
R 5.695
Each (In a Pack of 50)
units
Single 30V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 40mA 8 Ω, 140 Ω 500nA - 3.68mm
RS stock no. 699-7758
Mfr. Part No.BZG05C5V6-E3-TR
BrandVishay
R 4.423
Each (In a Pack of 20)
units
Single 5.6V Surface Mount 1 3 W DO-214AC (SMA) Voltage Regulator 7% 2 45mA 400Ω 1µA 4.5mm -
RS stock no. 166-1928
Mfr. Part No.BZX85C16
R 0.84
Each (In a Bag of 1000)
units
Single 16V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 15Ω 500nA 5.2mm 2.72mm
RS stock no. 800-8986
Mfr. Part No.1SMA5941BT3G
R 4.79
Each (On a Tape of 50)
units
Single 47V Surface Mount 1 1.5 W SMA Voltage Regulator 5% 2 8mA 67 Ω, 1000 Ω 500nA 4.57mm -
RS stock no. 805-0047
Mfr. Part No.1N4733ATR
R 1.17
Each (In a Pack of 100)
units
Single 5.1V Through Hole 1 1 W DO-41 General Purpose 5% 2 49mA 10µA 5.2mm 2.72mm
RS stock no. 163-1965
Mfr. Part No.1SMA5941BT3G
R 1.429
Each (On a Reel of 5000)
units
Single 47V Surface Mount 1 1.5 W SMA Voltage Regulator 5% 2 8mA 67 Ω, 1000 Ω 500nA 4.57mm -
RS stock no. 818-5086
Mfr. Part No.TZX4V7A-TR
BrandVishay
R 0.285
Each (In a Pack of 200)
units
Single 4.5V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS stock no. 463-278
Mfr. Part No.1N5349BG
R 5.649
Each (In a Pack of 10)
units
Single 12V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 100mA 2.5Ω 2µA 8.89mm -
RS stock no. 805-0148
Mfr. Part No.1N5234BTR
R 0.773
Each (In a Pack of 200)
units
Single 6.2V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 5µA 4.56mm 1.91mm
RS stock no. 103-3903
Mfr. Part No.1N5349BRLG
R 2.04
Each (On a Reel of 4000)
units
Single 12V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 2µA 8.89mm -
RS stock no. 800-8970
Mfr. Part No.1SMA5933BT3G
R 4.811
Each (On a Tape of 50)
units
Single 22V Surface Mount 1 1.5 W SMA Voltage Regulator 5% 2 17mA 17.5 Ω, 650 Ω 500nA 4.57mm -
RS stock no. 145-2438
Mfr. Part No.BZX85C6V8-TR
BrandVishay
R 0.61
Each (On a Reel of 10000)
units
- - - - - - - - - - - - - -
RS stock no. 100-7582
Mfr. Part No.1N5349BG
R 2.332
Each (In a Box of 1000)
units
Single 12V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 2µA 8.89mm -
RS stock no. 103-5052
Mfr. Part No.1SMB5934BT3G
R 1.431
Each (On a Reel of 2500)
units
Single 24V Surface Mount 1 3 W SMB Voltage Regulator 5% 2 15.6mA 19Ω 1µA 4.32mm -
RS stock no. 169-9128
Mfr. Part No.1N4747A R0
R 1.784
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 -
RS stock no. 545-3156
Mfr. Part No.MMSZ5243BT1G
R 3.087
Each (In a Pack of 20)
units
Single 13V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 9.5mA 13Ω 500nA 2.69mm -
RS stock no. 812-8796
Mfr. Part No.BZX85C6V8-TR
BrandVishay
R 2.009
Each (In a Pack of 200)
units
Single 6.8V Through Hole 1 1.3 W DO-41 General Purpose 6% 2 35mA 3.5Ω 1µA 4.1mm 2.6mm