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 Width
RS Stock No. 146-0633
Mfr. Part No.Z1SMA56 TRTB
SGD0.101
Each (On a Reel of 7500)
units
Single 56V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 10mA 60Ω 1µA 5.1mm 2.6mm
RS Stock No. 123-1414
Mfr. Part No.Z2SMB13 TRTB
SGD0.199
Each (In a Pack of 100)
units
Single 13V Surface Mount 1 3 W DO-214AA (SMB) - ±5% 2 50mA 10Ω 1µA 5.1mm 3.5mm
RS Stock No. 123-1409
Mfr. Part No.Z1SMA56 TRTB
SGD0.143
Each (In a Pack of 100)
units
Single 56V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 10mA 60Ω 1µA 5.1mm 2.6mm
RS Stock No. 123-1410
Mfr. Part No.Z1SMA62 TRTB
SGD0.181
Each (In a Pack of 100)
units
Single 62V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 10mA 80Ω 1µA 5.1mm 2.6mm
RS Stock No. 123-1415
Mfr. Part No.Z2SMB33 TRTB
SGD0.182
Each (In a Pack of 100)
units
Single 33V Surface Mount 1 3 W DO-214AA (SMB) - ±5% 2 25mA 15Ω 1µA 5.1mm 3.5mm
RS Stock No. 123-1413
Mfr. Part No.Z2SMB6V8 TRTB
SGD0.276
Each (In a Pack of 50)
units
Single 6.8V Surface Mount 1 3 W DO-214AA (SMB) - ±5% 2 100mA 10µA 5.1mm 3.5mm
RS Stock No. 165-5030
Mfr. Part No.Z1SMA18 TRTB
SGD0.172
Each (On a Reel of 7500)
units
Single 18V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 25mA 15Ω 1µA 5.1mm 2.6mm
RS Stock No. 165-5063
Mfr. Part No.Z1SMA10 TRTB
SGD0.175
Each (On a Reel of 7500)
units
Single 10V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 50mA 1µA 5.1mm 2.6mm
RS Stock No. 165-5046
Mfr. Part No.BZD27C18W TRTB
SGD0.13
Each (On a Reel of 10000)
units
Single 18V Surface Mount 1 1 W SOD123W - 7% 2 25mA - 1µA 2.8mm 1.9mm
RS Stock No. 123-1403
Mfr. Part No.Z1SMA16 TRTB
SGD0.181
Each (In a Pack of 100)
units
Single 16V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 25mA 15Ω 1µA 5.1mm 2.6mm
RS Stock No. 165-5004
Mfr. Part No.Z2SMB13 TRTB
SGD0.138
Each (On a Reel of 3200)
units
Single 13V Surface Mount 1 3 W DO-214AA (SMB) - ±5% 2 50mA 10Ω 1µA 5.1mm 3.5mm
RS Stock No. 165-5034
Mfr. Part No.Z1SMA62 TRTB
SGD0.137
Each (On a Reel of 7500)
units
Single 62V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 10mA 80Ω 1µA 5.1mm 2.6mm
RS Stock No. 123-1422
Mfr. Part No.BZD27C120W TRTB
SGD1.125
Each (In a Pack of 10)
units
Single 120V Surface Mount 1 1 W SOD123W - 0.06 2 5mA 300Ω 1µA 2.8mm 1.9mm
RS Stock No. 146-0631
Mfr. Part No.Z1SMA33 TRTB
SGD0.147
Each (On a Reel of 7500)
units
Single 33V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 25mA 15Ω 1µA 5.1mm 2.6mm
RS Stock No. 165-5029
Mfr. Part No.Z1SMA16 TRTB
SGD0.137
Each (On a Reel of 7500)
units
Single 16V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 25mA 15Ω 1µA 5.1mm 2.6mm
RS Stock No. 123-1405
Mfr. Part No.Z1SMA33 TRTB
SGD0.167
Each (In a Pack of 100)
units
Single 33V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 25mA 15Ω 1µA 5.1mm 2.6mm
RS Stock No. 165-5032
Mfr. Part No.Z1SMA43TRTB
SGD0.106
Each (On a Reel of 7500)
units
Single 43V Surface Mount 1 3.25 W DO-214AC (SMA) - ±5% 2 10mA 45Ω 1µA 5.1mm 2.6mm
RS Stock No. 165-4999
Mfr. Part No.BZD27C120W TRTB
SGD0.853
Each (On a Reel of 10000)
units
Single 120V Surface Mount 1 1 W SOD123W - 0.06 2 5mA 300Ω 1µA 2.8mm 1.9mm
RS Stock No. 165-5022
Mfr. Part No.Z2SMB6V8 TRTB
SGD0.177
Each (On a Reel of 3200)
units
Single 6.8V Surface Mount 1 3 W DO-214AA (SMB) - ±5% 2 100mA 10µA 5.1mm 3.5mm
RS Stock No. 146-0634
Mfr. Part No.Z2SMB33 TRTB
SGD0.128
Each (On a Reel of 3200)
units
Single 33V Surface Mount 1 3 W DO-214AA (SMB) - ±5% 2 25mA 15Ω 1µA 5.1mm 3.5mm