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. 687-5459
Mfr. Part No.1N4742A R0
$0.364
Each (In a Pack of 50)
units
Single 12V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 21mA 5µA 5.2mm -
RS Stock No. 169-8657
Mfr. Part No.1N5248BTR
$0.026
Each (On a Reel of 5000)
units
Single 18V Through Hole 1 500 mW DO-35 General Purpose 5% 2 7mA 21Ω 100nA 4.56mm 1.91mm
RS Stock No. 102-1393
Mfr. Part No.1N5339BG
$0.224
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 -
RS Stock No. 170-3364
Mfr. Part No.1N5341BG
$0.227
Each (In a Bag of 1000)
units
Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89mm -
RS Stock No. 169-0470
Mfr. Part No.UDZSTE-1722B
BrandROHM
$0.07
Each (On a Reel of 3000)
units
Single 22V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 100Ω 100nA 1.7mm -
RS Stock No. 184-4699
Mfr. Part No.1N4735A
$0.138
Each (In a Pack of 100)
units
Single 6.2V Through Hole 1 1 W DO-41 General Purpose 5% 2 41mA 10µA - 2.72mm
RS Stock No. 805-0056
Mfr. Part No.1N4735ATR
$0.085
Each (In a Pack of 200)
units
Single 6.2V Through Hole 1 1 W DO-41 General Purpose 5% 2 41mA 10µA 5.2mm 2.72mm
RS Stock No. 169-8526
Mfr. Part No.BZX85C15
$0.059
Each (In a Bag of 1000)
units
Single 15V Through Hole 1 1 W DO-41 - 5% 2 15mA 15Ω 500nA 5.21mm -
RS Stock No. 103-5049
Mfr. Part No.1N5341BRLG
$0.205
Each (On a Reel of 4000)
units
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
$0.572
Each (In a Pack of 10)
units
Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89mm -
RS Stock No. 169-9126
Mfr. Part No.1N4742A R0
$0.118
Each (On a Tape of 5000)
units
Single 12V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 21mA 5µA 5.2mm -
RS Stock No. 463-791
Mfr. Part No.1N5339BG
$0.55
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. 687-8133
Mfr. Part No.1N5341BRLG
$0.468
Each (In a Pack of 10)
units
Single 6.2V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 200mA 1µA 8.89mm -
RS Stock No. 476-0324
Mfr. Part No.UDZSTE-17 22B
BrandROHM
$0.121
Each (In a Pack of 100)
units
Single 22V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 100Ω 100nA 1.7mm -
RS Stock No. 654-7549
Mfr. Part No.1N5339BRLG
$0.71
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 -
RS Stock No. 103-3913
Mfr. Part No.1N5339BRLG
$0.204
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. 464-031
Mfr. Part No.1N5355BG
$0.55
Each (In a Pack of 10)
units
Single 18V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 65mA 2.5Ω 500nA 8.89mm -
RS Stock No. 805-0202
Mfr. Part No.1N5248BTR
$0.058
Each (In a Pack of 200)
units
Single 18V Through Hole 1 500 mW DO-35 General Purpose 5% 2 7mA 21Ω 100nA 4.56mm 1.91mm
RS Stock No. 476-0289
Mfr. Part No.UDZSTE-17 15B
BrandROHM
$0.132
Each (In a Pack of 100)
units
Single 15V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 42Ω 100nA 1.7mm -
RS Stock No. 102-2267
Mfr. Part No.1N5355BG
$0.224
Each (In a Box of 1000)
units
Single 18V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 65mA 2.5Ω 500nA 8.89mm -
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