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. 145-3665
Mfr. Part No.SZMMSZ4709T1G
SGD0.075
Each (On a Reel of 3000)
units
Single 24V Surface Mount 1 500 mW SOD-123 Voltage Regulator - 2 0.05mA - 10nA 2.84mm -
RS Stock No. 145-3662
Mfr. Part No.SZMMSZ4697T1G
SGD0.075
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 500 mW SOD-123 Voltage Regulator - 2 0.05mA - 1µA 2.84mm -
RS Stock No. 802-4685
Mfr. Part No.MM5Z2V7T1G
SGD0.092
Each (In a Pack of 200)
units
Single 2.7V Surface Mount 1 500 mW SOD-523 Voltage Regulator 5% 2 5mA 100Ω 20µA 1.3mm -
RS Stock No. 802-1884
Mfr. Part No.MMSZ4715T1G
SGD0.059
Each (In a Pack of 200)
units
Single 36V Surface Mount 1 500 mW SOD-123 Voltage Regulator - 2 0.05mA - 10nA 2.84mm -
RS Stock No. 159-6583
Mfr. Part No.TZX3V9C-TR
BrandVishay
SGD0.033
Each (On a Reel of 10000)
units
Single 4V Through Hole 1 500 mW DO-35 Voltage Regulator 3% 2 5mA 100Ω 5µA 3.9mm 1.7mm
RS Stock No. 146-0631
Mfr. Part No.Z1SMA33 TRTB
SGD0.098
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 -
RS Stock No. 177-7358
Mfr. Part No.BZX85C100-TR
BrandVishay
SGD0.084
Each (On a Reel of 5000)
units
Single 100V Through Hole 1 1.3 W DO-41 General Purpose 5% 2 2.7mA 350Ω 500nA 4.1mm 2.6mm
RS Stock No. 544-9725
Mfr. Part No.MMSZ3V6T1G
SGD0.156
Each (In a Pack of 50)
units
Single 3.6V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 90Ω 5µA 2.69mm -
RS Stock No. 812-8597
Mfr. Part No.BZX55C11-TR
BrandVishay
SGD0.075
Each (In a Pack of 250)
units
Single 11V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 20Ω 2µA 3.9mm 1.7mm
RS Stock No. 816-6791
Mfr. Part No.PLVA662A,215
BrandNexperia
SGD0.145
Each (In a Pack of 50)
units
Single 6.2V Surface Mount 1 250 mW SOT-23 Avalanche 3% 3 0.25mA - 100nA 3mm -
RS Stock No. 168-3679
Mfr. Part No.DZ3S068D0L
BrandPanasonic
SGD0.062
Each (On a Reel of 3000)
units
Common Anode 6.8V Surface Mount 2 150 mW SSMini3 F3 B Transient Suppressor 5% 3 5mA 60Ω 100nA 1.6mm -
RS Stock No. 171-4631
Mfr. Part No.CDZVT2R2.4B
BrandROHM
SGD0.041
Each (In a Pack of 250)
units
Single 2.43V Surface Mount 1 100 mW SOD-923, VMN2M Voltage Regulator - 2 5mA 100 Ω, 1000 Ω 120µA 0.91mm -
RS Stock No. 184-4138
Mfr. Part No.1N5252B
SGD0.035
Each (In a Bag of 5000)
units
Single 24V Through Hole 1 500 mW DO-35 General Purpose 5% 2 5.2mA 33 Ω @ 5.2 mA, 600 Ω @ 0.25 mA 100nA - 1.91mm
RS Stock No. 166-1537
Mfr. Part No.BZX384-C75,115
BrandNexperia
SGD0.03
Each (On a Reel of 3000)
units
Single 75V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 2mA 255Ω 50nA 1.8mm -
RS Stock No. 760-2849
Mfr. Part No.DZ2418000L
BrandPanasonic
SGD0.552
Each (In a Pack of 10)
units
Single 18V Surface Mount 1 2 W TMiniP2 F2 B Voltage Regulator 5% 2 10mA 30Ω 10µA 3.8mm -
RS Stock No. 145-5651
Mfr. Part No.MMSZ5233B
SGD0.034
Each (On a Reel of 3000)
units
Single 6V Surface Mount 1 500 mW SOD-123 General Purpose 5% 2 20mA 5µA 2.85mm -
RS Stock No. 152-5565
Mfr. Part No.BZX84J-B18,115
BrandNexperia
SGD0.072
Each (In a Pack of 100)
units
Single 18V Surface Mount 1 40 (Peak Reverse Power Dissipation) W, 550 (Total Power Dissipation) mW SC-90, SOD-323F General Purpose ±2% 2 5mA - - 1.8mm -
RS Stock No. 816-0254
Mfr. Part No.TDZ5V6J,115
BrandNexperia
SGD0.085
Each (In a Pack of 150)
units
Single 5.6V Surface Mount 1 180 W SOD-323F General Purpose 2% 2 5mA - 10µA 1.8mm -
RS Stock No. 166-1348
Mfr. Part No.BZX384-C16,115
BrandNexperia
SGD0.03
Each (On a Reel of 3000)
units
Single 16V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 5mA 40Ω 50nA 1.8mm -
RS Stock No. 793-0891
Mfr. Part No.MMSZ4698T1G
SGD0.036
Each (On a Tape of 100)
units
Single 11V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 50nA 2.84mm -
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