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. 162-9446
Mfr. Part No.MMSZ4688T1G
SGD0.047
Each (On a Reel of 3000)
units
Single 4.7V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 10µA 2.84mm -
RS Stock No. 145-3507
Mfr. Part No.MMSZ5250BT1G
SGD0.039
Each (On a Reel of 3000)
units
Single 20V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 6.2mA 25Ω 100nA 2.69mm -
RS Stock No. 805-8802
Mfr. Part No.SZ1SMA5929BT3G
SGD0.743
Each (In a Pack of 25)
units
Single 15V Surface Mount 1 500 mW SMA Voltage Regulator 5% 2 25mA 500nA 4.57mm -
RS Stock No. 145-3188
Mfr. Part No.MM3Z24VT1G
SGD0.022
Each (On a Reel of 3000)
units
Single 24V Surface Mount 1 300 mW SOD-323 Voltage Regulator 5% 2 5mA 70Ω 50nA 1.8mm -
RS Stock No. 159-6362
Mfr. Part No.1N5230B-TR
BrandVishay
SGD0.033
Each (On a Reel of 10000)
units
Single 4.7V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 19Ω 5µA 3.9mm 1.7mm
RS Stock No. 133-2828
Mfr. Part No.RSB16VATR
BrandROHM
SGD0.172
Each (In a Pack of 50)
units
Single 16V Surface Mount 1 500 mW SOD-323HE Bi-Directional - 2 - - 100nA 1.9mm -
RS Stock No. 166-2748
Mfr. Part No.BZX85C9V1
SGD0.049
Each (In a Bag of 1000)
units
Single 9.1V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 25mA 1µA 5.2mm 2.72mm
RS Stock No. 163-0818
Mfr. Part No.SZMMSZ4689T1G
SGD0.076
Each (On a Reel of 3000)
units
Single 5.1V Surface Mount 1 500 mW SOD-123 Voltage Regulator - 2 0.05mA - 10µA 2.84mm -
RS Stock No. 823-1558
Mfr. Part No.MMSZ5246B-7-F
SGD0.06
Each (In a Pack of 200)
units
Single 16V Surface Mount 1 500 mW SOD-123 General Purpose 5% 2 7.8mA 17Ω 100nA 2.85mm -
RS Stock No. 759-8901
Mfr. Part No.BZX85C9V1
SGD0.128
Each (In a Pack of 100)
units
Single 9.1V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 25mA 1µA 5.2mm 2.72mm
RS Stock No. 166-0575
Mfr. Part No.PDZ5.6B,115
BrandNexperia
SGD0.03
Each (On a Reel of 3000)
units
Single 5.6V Surface Mount 1 400 mW SOD-323 Voltage Regulator 2% 2 5mA 50Ω 1µA 1.8mm -
RS Stock No. 178-7071
Mfr. Part No.BZV55-C33,115
BrandNexperia
SGD0.034
Each (On a Reel of 2500)
units
Single 33V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 2mA 80Ω 50nA 3.7mm -
RS Stock No. 146-1980
Mfr. Part No.BZX85C24
SGD0.053
Each (In a Bag of 1000)
units
Single 24V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 10mA 25Ω 500nA 5.2mm 2.72mm
RS Stock No. 146-0869
Mfr. Part No.BZX84-C36,215
BrandNexperia
SGD0.018
Each (On a Reel of 3000)
units
Single 36V Surface Mount 1 250 mW SOT-23 Voltage Regulator 5% 3 2mA 90Ω 50nA 3mm -
RS Stock No. 509-548
Mfr. Part No.BZX84-C6V8,215
BrandNexperia
SGD0.07
Each (In a Pack of 200)
units
Single 6.8V Surface Mount 1 250 mW SOT-23 (TO-236AB) Voltage Regulator 5% 3 5mA 15Ω 2µA 3mm -
RS Stock No. 169-0467
Mfr. Part No.UDZSTE-1713B
BrandROHM
SGD0.065
Each (On a Reel of 3000)
units
Single 13V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 37Ω 100nA 1.7mm -
RS Stock No. 813-6722
Mfr. Part No.BZX84-A30,215
BrandNexperia
SGD0.284
Each (In a Pack of 20)
units
Single 4.3V Surface Mount 1 250 mW SOT-23 Voltage Regulator 5% 3 300mA - 3µA 3mm -
RS Stock No. 476-0273
Mfr. Part No.UDZSTE-17 13B
BrandROHM
SGD0.118
Each (In a Pack of 100)
units
Single 13V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 37Ω 100nA 1.7mm -
RS Stock No. 168-3370
Mfr. Part No.DZ2J056M0L
BrandPanasonic
SGD0.051
Each (On a Reel of 3000)
units
Single 5.6V Surface Mount 1 200 mW SMini2 F5 B General Purpose 2.5% 2 5mA 200Ω 500nA 1.7mm -
RS Stock No. 508-084
Mfr. Part No.BZV85-C6V8,113
BrandNexperia
SGD0.104
Each (In a Pack of 100)
units
Single 6.8V Through Hole 1 1.3 W DO-41 Voltage Regulator 5% 2 35mA 3.5Ω 2µA 4.8mm -
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