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. 508-157
Mfr. Part No.BZB984-C13,115
BrandNexperia
TWD11
Each (In a Pack of 20)
units
Common Anode 13V Surface Mount 2 425 mW SOT-663 Voltage Regulator 5% 3 5mA 30Ω 100nA 1.7mm -
RS Stock No. 168-9386
Mfr. Part No.BZB984-C13,115
BrandNexperia
TWD3
Each (On a Reel of 4000)
units
Common Anode 13V Surface Mount 2 425 mW SOT-663 Voltage Regulator 5% 3 5mA 30Ω 100nA 1.7mm -
RS Stock No. 136-4833
Mfr. Part No.BZX79-C10,133
BrandNexperia
TWD2
Each (In a Pack of 100)
units
Single 10V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 150 Ω @ 1 mA - 4.25mm 1.85mm
RS Stock No. 544-4461
Mfr. Part No.BZX79-C10,113
BrandNexperia
TWD5
Each (In a Pack of 20)
units
Single 10V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 20Ω 200nA 4.25mm -
RS Stock No. 103-7575
Mfr. Part No.BZX79-C10,113
BrandNexperia
TWD1
Each (On a Reel of 10000)
units
Single 10V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 20Ω 200nA 4.25mm -
RS Stock No. 136-4796
Mfr. Part No.BZX79-C10,133
BrandNexperia
TWD1
Each (On a Tape of 10000)
units
Single 10V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 150 Ω @ 1 mA - 4.25mm 1.85mm
RS Stock No. 805-7111
Mfr. Part No.SZMMSZ5259BT1G
TWD3
Each (In a Pack of 100)
units
Single 39V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 3.2mA 80Ω 100nA 2.84mm -
RS Stock No. 163-0823
Mfr. Part No.SZMMSZ5259BT1G
TWD2
Each (On a Reel of 3000)
units
Single 39V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 3.2mA 80Ω 100nA 2.84mm -
RS Stock No. 145-2023
Mfr. Part No.ZMY56-GS08
BrandVishay
TWD3
Each (On a Reel of 1500)
units
Single 56V Surface Mount 1 1 W DO-213AB General Purpose 5% 2 10mA 100Ω 500nA 5.2mm 2.6mm
RS Stock No. 813-3868
Mfr. Part No.ZMY56-GS08
BrandVishay
TWD11
Each (In a Pack of 50)
units
Single 56V Surface Mount 1 1 W DO-213AB General Purpose 5% 2 10mA 100Ω 500nA 5.2mm 2.6mm
RS Stock No. 738-5058
Mfr. Part No.MMSZ5245B-7-F
TWD2
Each (In a Pack of 100)
units
Single 15V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 8.5mA 600Ω 100nA 2.85mm -
RS Stock No. 121-9491
Mfr. Part No.MMSZ5245B-7-F
TWD1
Each (On a Reel of 3000)
units
Single 15V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 8.5mA 600Ω 100nA 2.85mm -
RS Stock No. 708-7916
Mfr. Part No.BZX85C30-TAP
BrandVishay
TWD2
Each (In a Pack of 100)
units
Single 30V Through Hole 1 1.3 W DO-41 Voltage Regulator 7% 2 8mA 30Ω 500nA 4.1mm -
RS Stock No. 710-4480
Mfr. Part No.SML4754A-E3/61
BrandVishay
TWD6
Each (In a Pack of 10)
units
Single 39V Surface Mount 1 1 W DO-214AC (SMA) - 5% 2 6.5mA 60Ω 5µA 5.2mm -
RS Stock No. 165-6013
Mfr. Part No.TZX6V8C-TR
BrandVishay
TWD1
Each (On a Reel of 10000)
units
Single 6.8V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 15Ω 1µA 3.9mm 1.7mm
RS Stock No. 121-9478
Mfr. Part No.BZT52C5V1-7-F
TWD1
Each (On a Reel of 3000)
units
Single 5.1V Surface Mount 1 500 mW SOD-123 Voltage Regulator 6% 2 5mA 480Ω 2µA 2.85mm -
RS Stock No. 752-5966
Mfr. Part No.PTZTE2520B
BrandROHM
TWD10
Each (In a Pack of 10)
units
Single 20V Surface Mount 1 1 W SOD-106 Voltage Regulator 6% 2 20mA 14Ω 10µA 4.5mm -
RS Stock No. 738-4951
Mfr. Part No.BZT52C5V1-7-F
TWD3
Each (In a Pack of 200)
units
Single 5.1V Surface Mount 1 500 mW SOD-123 General Purpose 6% 2 5mA 480Ω 2µA 2.85mm -
RS Stock No. 165-2980
Mfr. Part No.SML4754A-E3/61
BrandVishay
TWD7
Each (On a Reel of 1800)
units
Single 39V Surface Mount 1 1 W DO-214AC (SMA) - 5% 2 6.5mA 60Ω 5µA 5.2mm -
RS Stock No. 818-5146
Mfr. Part No.TZX6V8C-TR
BrandVishay
TWD2
Each (In a Pack of 200)
units
Single 6.8V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 15Ω 1µA 3.9mm 1.7mm