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. 509-235
Mfr. Part No.BZX384-C5V1,115
BrandNexperia
PHP2.806
Each (In a Pack of 100)
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Single 5.1V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 5mA 60Ω 2µA 1.8mm -
RS Stock No. 166-1366
Mfr. Part No.BZX384-C5V1,115
BrandNexperia
PHP0.975
Each (On a Reel of 3000)
units
Single 5.1V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 5mA 60Ω 2µA 1.8mm -
RS Stock No. 544-3575
Mfr. Part No.BZX79-C4V7,113
BrandNexperia
PHP4.801
Each (In a Pack of 20)
units
Single 4.7V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 80Ω 3µA 4.25mm -
RS Stock No. 103-5049
Mfr. Part No.1N5341BRLG
PHP6.285
Each (On a Reel of 4000)
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Single 6.2V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 200mA 1µA 8.89mm -
RS Stock No. 687-8143
Mfr. Part No.1SMA5921BT3G
PHP9.314
Each (In a Pack of 10)
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Single 6.8V Surface Mount 1 500 mW SMA Voltage Regulator 5% 2 55.1mA 2.5Ω 2.5µA 4.32mm -
RS Stock No. 544-3632
Mfr. Part No.BZX79-C7V5,113
BrandNexperia
PHP5.341
Each (In a Pack of 20)
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Single 7.5V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 15Ω 1µA 4.25mm -
RS Stock No. 166-0303
Mfr. Part No.BZX79-C7V5,113
BrandNexperia
PHP0.945
Each (On a Reel of 10000)
units
Single 7.5V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 15Ω 1µA 4.25mm -
RS Stock No. 170-3364
Mfr. Part No.1N5341BG
PHP6.716
Each (In a Bag of 1000)
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Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89mm -
RS Stock No. 687-8133
Mfr. Part No.1N5341BRLG
PHP17.90
Each (In a Pack of 10)
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Single 6.2V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 200mA 1µA 8.89mm -
RS Stock No. 463-795
Mfr. Part No.1N5341BG
PHP19.378
Each (In a Pack of 10)
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Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89mm -
RS Stock No. 163-2343
Mfr. Part No.1SMA5921BT3G
PHP4.589
Each (On a Reel of 5000)
units
Single 6.8V Surface Mount 1 500 mW SMA Voltage Regulator 5% 2 55.1mA 2.5Ω 2.5µA 4.32mm -
RS Stock No. 544-3519
Mfr. Part No.BZX79-C2V7,113
BrandNexperia
PHP5.629
Each (In a Pack of 20)
units
Single 2.7V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 100Ω 20µA 4.25mm -
RS Stock No. 463-818
Mfr. Part No.1N5342BG
PHP15.69
Each (In a Pack of 10)
units
Single 6.8V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 175mA 10µA 8.89mm -
RS Stock No. 544-3604
Mfr. Part No.BZX79-C5V6,113
BrandNexperia
PHP3.38
Each (In a Pack of 20)
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Single 5.6V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 40Ω 1µA 4.25mm -
RS Stock No. 812-487
Mfr. Part No.BZX85C12V
BrandMagnatec
PHP9.486
Each (In a Pack of 5)
units
Single 12V Through Hole 1 1.3 W DO-41 Voltage Regulator 5% 2 20mA 350Ω 500nA 4.1mm 2.5mm
RS Stock No. 792-5316
Mfr. Part No.1N5342BRLG
PHP13.829
Each (In a Pack of 20)
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Single 6.8V Through Hole 1 5 W - Voltage Regulator 5% 2 175mA 10µA 8.89mm 3.68mm
RS Stock No. 760-2971
Mfr. Part No.DZ2W05100L
BrandPanasonic
PHP18.407
Each (In a Pack of 10)
units
Single 5.1V Surface Mount 1 1 W Mini2 F3 B Voltage Regulator 5% 2 20mA 50Ω 20µA 2.6mm -
RS Stock No. 170-3538
Mfr. Part No.1N5342BRLG
PHP6.30
Each (On a Reel of 4000)
units
Single 6.8V Through Hole 1 5 W - Voltage Regulator 5% 2 175mA 10µA 8.89mm 3.68mm
RS Stock No. 124-2303
Mfr. Part No.BZX79-C12,113
BrandNexperia
PHP0.945
Each (On a Reel of 10000)
units
Single 12V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 25Ω 100nA 4.25mm -
RS Stock No. 169-8636
Mfr. Part No.1N4745ATR
PHP1.52
Each (On a Reel of 3000)
units
Single 16V Through Hole 1 1 W DO-41 General Purpose 5% 2 15.5mA 16Ω 5µA 5.2mm 2.72mm
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