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. 805-2787
Mfr. Part No.MMBZ5242ELT1G
MYR0.249
Each (On a Tape of 200)
units
Single 12V Surface Mount 1 300 mW SOT-23 Voltage Regulator - 3 20mA 30Ω 1µA 3.04mm 1.4mm
RS Stock No. 145-3207
Mfr. Part No.MMBZ5242ELT1G
MYR0.135
Each (On a Reel of 3000)
units
Single 12V Surface Mount 1 300 mW SOT-23 Voltage Regulator - 3 20mA 30Ω 1µA 3.04mm 1.4mm
RS Stock No. 805-0047
Mfr. Part No.1N4733ATR
MYR0.281
Each (In a Pack of 100)
units
Single 5.1V Through Hole 1 1 W DO-41 General Purpose 5% 2 49mA 10µA 5.2mm -
RS Stock No. 186-8758
Mfr. Part No.1N5362BG
MYR0.596
Each (In a Box of 1000)
units
Single 28V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 50mA 130Ω 500nA - -
RS Stock No. 178-4826
Mfr. Part No.1N5364BG
MYR0.582
Each (In a Bag of 1000)
units
Single 33V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 40mA 10Ω 500nA 8.89mm 3.68mm
RS Stock No. 178-7631
Mfr. Part No.1N5364BRLG
MYR0.499
Each (On a Reel of 4000)
units
Single 33V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 40mA 10Ω 500nA 8.89mm 3.68mm
RS Stock No. 463-369
Mfr. Part No.1N5364BG
MYR1.46
Each (In a Pack of 10)
units
Single 33V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 40mA 10Ω 500nA 8.89mm 3.68mm
RS Stock No. 625-6467
Mfr. Part No.1N5364BRLG
MYR1.84
Each (In a Pack of 5)
units
Single 33V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 40mA 10Ω 500nA 8.89mm 3.68mm
RS Stock No. 163-2331
Mfr. Part No.1N5362BRLG
MYR0.507
Each (On a Reel of 4000)
units
Single 28V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 500nA 8.89mm 3.68mm
RS Stock No. 186-9203
Mfr. Part No.1N5362BG
MYR1.51
Each (In a Pack of 25)
units
Single 28V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 50mA 130Ω 500nA - -
RS Stock No. 625-6439
Mfr. Part No.1N5362BRLG
MYR1.88
Each (In a Pack of 5)
units
Single 28V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 500nA 8.89mm 3.68mm
RS Stock No. 178-7104
Mfr. Part No.BZX84-C18,215
BrandNexperia
MYR0.085
Each (On a Reel of 3000)
units
Single 18V Surface Mount 1 250 mW SOT-23 (TO-236AB) Voltage Regulator 5% 3 5mA 45Ω 50nA 3mm 1.4mm
RS Stock No. 509-093
Mfr. Part No.BZX79-B6V2,113
BrandNexperia
MYR0.266
Each (In a Pack of 100)
units
Single 6.2V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 10Ω 3µA 4.25mm 1.85mm
RS Stock No. 509-100
Mfr. Part No.BZX84-C18,215
BrandNexperia
MYR0.17
Each (In a Pack of 200)
units
Single 18V Surface Mount 1 250 mW SOT-23 (TO-236AB) Voltage Regulator 5% 3 5mA 45Ω 50nA 3mm 1.4mm
RS Stock No. 166-1235
Mfr. Part No.BZX79-B6V2,113
BrandNexperia
MYR0.154
Each (On a Reel of 5000)
units
Single 6.2V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 10Ω 3µA 4.25mm 1.85mm
RS Stock No. 463-791
Mfr. Part No.1N5339BG
MYR1.39
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. 103-3913
Mfr. Part No.1N5339BRLG
MYR0.491
Each (On a Reel of 4000)
units
Single 5.6V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 220mA 1µA 8.89mm 3.68mm
RS Stock No. 654-7549
Mfr. Part No.1N5339BRLG
MYR1.80
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. 102-1393
Mfr. Part No.1N5339BG
MYR0.569
Each (In a Box of 1000)
units
Single 5.6V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 220mA 1µA 8.89mm 3.68mm
RS Stock No. 145-3697
Mfr. Part No.1SMB5931BT3G
MYR0.364
Each (On a Reel of 2500)
units
Single 18V Surface Mount 1 3 W SMB Voltage Regulator 5% 2 20.8mA 12Ω 1µA 4.6mm 3.95mm