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. 190-7702
Mfr. Part No.SMA6J48A-TR
SGD0.623
Each (In a Pack of 25)
units
Single 48V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9mm 4.6mm
RS Stock No. 159-6578
Mfr. Part No.TZX30A-TR
BrandVishay
SGD0.039
Each (On a Reel of 10000)
units
Single 30V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 2mA 100Ω 1µA 3.9mm -
RS Stock No. 186-8929
Mfr. Part No.SZMM3Z24VT1G
SGD0.073
Each (On a Reel of 3000)
units
Single 24.2V Surface Mount 1 300 mW SOD-323 Voltage Regulator - 2 5mA 120Ω 50nA 1.8mm 1.35mm
RS Stock No. 166-1881
Mfr. Part No.BZX79C20
SGD0.042
Each (In a Bag of 1000)
units
Single 20V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 55Ω 50nA 4.56mm -
RS Stock No. 145-2025
Mfr. Part No.ZPY13-TR
BrandVishay
SGD0.087
Each (On a Reel of 5000)
units
Single 13V Through Hole 1 1.3 W DO-41 General Purpose 5% 2 50mA 500nA 5.2mm -
RS Stock No. 182-6956
Mfr. Part No.DZ9F22S92-7
SGD0.045
Each (On a Reel of 10000)
units
- 22V Surface Mount 1 200 mW SOD-923 Ultra Small ±5% 2 5mA 100Ω 100nA 0.8mm 0.6mm
RS Stock No. 818-5171
Mfr. Part No.TZX9V1A-TR
BrandVishay
SGD0.114
Each (In a Pack of 200)
units
Single 8.7V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 20Ω 1µA 3.9mm -
RS Stock No. 814-2859
Mfr. Part No.BZG05C16-E3-TR
BrandVishay
SGD0.276
Each (In a Pack of 50)
units
Single 16V Surface Mount 1 3 W DO-214AC (SMA) Voltage Regulator 6% 2 15mA 15Ω 500nA 4.5mm 2.8mm
RS Stock No. 159-6534
Mfr. Part No.BZX84C3V3-E3-08
BrandVishay
SGD0.059
Each (On a Reel of 3000)
units
Single 3.3V Surface Mount 1 300 mW SOT-23 General Purpose 5% 3 5mA 95Ω 5µA 3.1mm 1.43mm
RS Stock No. 738-4958
Mfr. Part No.BZT52C8V2-7-F
SGD0.092
Each (In a Pack of 200)
units
Single 8.2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 6% 2 5mA 80Ω 700nA 2.85mm 1.7mm
RS Stock No. 708-1889
Mfr. Part No.DZ23C3V6-7-F
SGD0.417
Each (In a Pack of 25)
units
Common Cathode 3.6V Surface Mount 2 300 mW SOT-23 Voltage Regulator 5% 3 5mA 500Ω 100nA 3mm 1.4mm
RS Stock No. 145-1859
Mfr. Part No.ZM4745A-GS08
BrandVishay
SGD0.156
Each (On a Reel of 1500)
units
Single 16V Surface Mount 1 1 W DO-213AB General Purpose 5% 2 15.5mA 16Ω 5µA 5.2mm -
RS Stock No. 124-6580
Mfr. Part No.KDZVTR5.1B
BrandROHM
SGD0.49
Each (In a Pack of 50)
units
Single 5.1V Surface Mount 1 1 W SOD-123 Voltage Regulator - 2 40mA - 20µA 2.7mm 0.9mm
RS Stock No. 687-8146
Mfr. Part No.1SMA5918BT3G
SGD0.465
Each (In a Pack of 10)
units
Single 5.1V Surface Mount 1 500 mW SMA Voltage Regulator 5% 2 73.5mA 2.5µA 4.32mm 2.6mm
RS Stock No. 707-4506
Mfr. Part No.DZ2S02400L
BrandPanasonic
SGD0.421
Each (In a Pack of 25)
units
Single 2.4V Surface Mount 1 150 mW SSMini2 F5 B General Purpose 5% 2 5mA 100Ω 120µA 1.2mm 0.8mm
RS Stock No. 508-719
Mfr. Part No.BZX384-C30,115
BrandNexperia
SGD0.09
Each (In a Pack of 200)
units
Single 30V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 2mA 80Ω 50nA 1.8mm 1.35mm
RS Stock No. 169-0794
Mfr. Part No.DDZ7V5ASF-7
SGD0.038
Each (On a Reel of 3000)
units
Single 7V Surface Mount 1 500 mW SOD-323F Voltage Regulator 2.5% 2 20mA 30Ω 7.5µA 1.8mm 1.35mm
RS Stock No. 805-0205
Mfr. Part No.1N5247BTR
SGD0.064
Each (In a Pack of 200)
units
Single 17V Through Hole 1 500 mW DO-35 General Purpose 5% 2 7.4mA 19Ω 100nA 4.56mm -
RS Stock No. 921-0903
Mfr. Part No.BZT585B30T-7
SGD0.093
Each (In a Pack of 100)
units
Single 30V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 2mA 300Ω 50nA 1.3mm 0.9mm
RS Stock No. 903-0779
Mfr. Part No.BZX84B4V7-E3-08
BrandVishay
SGD0.121
Each (On a Reel of 250)
units
Single 4.7V Surface Mount 1 300 mW SOT-23 General Purpose 2% 3 1 mA, 5 mA 80Ω 3µA 3.1mm 1.43mm
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