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. 700-2693
Mfr. Part No.UDZSTE-1722B
BrandROHM
$0.331
Each (In a Pack of 10)
units
Single 22V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 100Ω 100nA 1.7mm 1.25mm
RS Stock No. 654-7549
Mfr. Part No.1N5339BRLG
$0.778
Each (In a Pack of 5)
units
Single 5.6V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 220mA 1µA 8.89mm 3.68mm
RS Stock No. 102-2267
Mfr. Part No.1N5355BG
$0.227
Each (In a Box of 1000)
units
Single 18V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 65mA 2.5Ω 500nA 8.89mm 3.68mm
RS Stock No. 463-791
Mfr. Part No.1N5339BG
$0.602
Each (In a Pack of 10)
units
Single 5.6V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 220mA 1µA 8.89mm 3.68mm
RS Stock No. 476-0289
Mfr. Part No.UDZSTE-17 15B
BrandROHM
$0.134
Each (In a Pack of 100)
units
Single 15V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 42Ω 100nA 1.7mm 1.25mm
RS Stock No. 805-0202
Mfr. Part No.1N5248BTR
$0.059
Each (In a Pack of 200)
units
Single 18V Through Hole 1 500 mW DO-35 General Purpose 5% 2 7mA 21Ω 100nA 4.56mm -
RS Stock No. 145-2285
Mfr. Part No.TZX5V1B-TR
BrandVishay
$0.042
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 -
RS Stock No. 811-6015
Mfr. Part No.1N5248B-TR
BrandVishay
$0.089
Each (In a Pack of 250)
units
Single 18V Through Hole 1 500 mW DO-35 General Purpose 5% 2 7mA 21Ω 100nA 3.9mm -
RS Stock No. 485-4003
Mfr. Part No.1N5353B
$0.704
Each (In a Pack of 10)
units
Single 16V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 75mA 2.5Ω 1µA 8.89mm 3.68mm
RS Stock No. 146-0634
Mfr. Part No.Z2SMB33 TRTB
$0.14
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
RS Stock No. 654-7606
Mfr. Part No.1N5351BRLG
$0.796
Each (In a Pack of 5)
units
Single 14V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 1µA 8.89mm 3.68mm
RS Stock No. 774-3300
Mfr. Part No.1N5357BG
$0.627
Each (In a Pack of 10)
units
Single 20V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 65mA 75Ω 500nA 8.89mm -
RS Stock No. 774-3293
Mfr. Part No.1N5351BG
$0.629
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 -
RS Stock No. 812-8632
Mfr. Part No.BZX55C4V3-TR
BrandVishay
$0.124
Each (In a Pack of 250)
units
Single 4.3V Through Hole 1 500 mW DO-35 Voltage Regulator 7% 2 5mA 75Ω 20µA 3.9mm -
RS Stock No. 145-2229
Mfr. Part No.BZX55C4V3-TR
BrandVishay
$0.044
Each (On a Reel of 10000)
units
Single 4.3V Through Hole 1 500 mW DO-35 Voltage Regulator 7% 2 5mA 75Ω 20µA 3.9mm -
RS Stock No. 123-1415
Mfr. Part No.Z2SMB33 TRTB
$0.204
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. 163-0834
Mfr. Part No.1N5357BG
$0.24
Each (In a Box of 1000)
units
Single 20V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 65mA 75Ω 500nA 8.89mm -
RS Stock No. 654-7628
Mfr. Part No.1N5357BRLG
$0.796
Each (In a Pack of 5)
units
Single 20V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 65mA 500nA 8.89mm 3.68mm
RS Stock No. 508-163
Mfr. Part No.BZX79-B12,113
BrandNexperia
$0.112
Each (In a Pack of 100)
units
Single 12V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 25Ω 100nA 4.25mm 1.85mm
RS Stock No. 634-7169
Mfr. Part No.SML4743-E3/61
BrandVishay
$0.538
Each (In a Pack of 5)
units
Single 13V Surface Mount 1 1 W SMA - 10% 2 19mA 10Ω 5µA 4.5mm 2.79mm
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