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. 805-2787
Mfr. Part No.MMBZ5242ELT1G
MYR0.165
Each (On a Tape of 200)
units
Single 12V Surface Mount 1 300 mW SOT-23 Voltage Regulator - 3 20mA 30Ω 1µA 3.04mm -
RS Stock No. 145-3207
Mfr. Part No.MMBZ5242ELT1G
MYR0.117
Each (On a Reel of 3000)
units
Single 12V Surface Mount 1 300 mW SOT-23 Voltage Regulator - 3 20mA 30Ω 1µA 3.04mm -
RS Stock No. 805-0047
Mfr. Part No.1N4733ATR
MYR0.282
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 2.72mm
RS Stock No. 178-4826
Mfr. Part No.1N5364BG
MYR0.593
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 -
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 -
RS Stock No. 625-6439
Mfr. Part No.1N5362BRLG
MYR1.60
Each (In a Pack of 5)
units
Single 28V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 500nA 8.89mm -
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 -
RS Stock No. 625-6467
Mfr. Part No.1N5364BRLG
MYR1.57
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 -
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 -
RS Stock No. 186-8758
Mfr. Part No.1N5362BG
MYR0.715
Each (In a Box of 1000)
units
Single 28V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 50mA 130Ω 500nA - 3.68mm
RS Stock No. 186-9203
Mfr. Part No.1N5362BG
MYR1.756
Each (In a Pack of 25)
units
Single 28V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 50mA 130Ω 500nA - 3.68mm
RS Stock No. 703-3587
Mfr. Part No.DZ2J043M0L
BrandPanasonic
MYR0.12
Each (In a Pack of 50)
units
Single 4.3V Surface Mount 1 200 mW SMini2 F5 B General Purpose 2.5% 2 5mA 130Ω 10µA 1.7mm -
RS Stock No. 168-3391
Mfr. Part No.DZ2J043M0L
BrandPanasonic
MYR0.10
Each (On a Reel of 3000)
units
Single 4.3V Surface Mount 1 200 mW SMini2 F5 B General Purpose 2.5% 2 5mA 130Ω 10µA 1.7mm -
RS Stock No. 178-7104
Mfr. Part No.BZX84-C18,215
BrandNexperia
MYR0.087
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 -
RS Stock No. 509-100
Mfr. Part No.BZX84-C18,215
BrandNexperia
MYR0.161
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 -
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 -
RS Stock No. 166-1235
Mfr. Part No.BZX79-B6V2,113
BrandNexperia
MYR0.119
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 -
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 -
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 -
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 -
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