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
New
RS Stock No. 190-6750
Mfr. Part No.ESDA7P120-1U1M
HK$0.863
Each (On a Reel of 8000)
units
Single 5.5V Surface Mount 1 - QFN Uni-Directional - 2 - - 1.5µA 1.6mm 1mm
RS Stock No. 190-7678
Mfr. Part No.SM6T27CAY
HK$6.75
Each (In a Pack of 25)
units
Single 28.2V Surface Mount 1 600 W DO-214AA (SMB) Bi-Directional - 2 - - 200nA 3.95mm 4.6mm
New
RS Stock No. 190-6756
Mfr. Part No.LDP24A
HK$15.207
Each (On a Tape of 100)
units
Single 24V Through Hole 1 5 W R6 - - 2 - - 300µA 9.1mm -
New
RS Stock No. 190-6751
Mfr. Part No.ESDALC6V1P5
HK$1.715
Each (On a Reel of 3000)
units
Single 3V Surface Mount 4 - SOT-666 Uni-Directional - 5 - 1.5Ω 100nA 1.7mm 1.3mm
New
RS Stock No. 190-7623
Mfr. Part No.ESDAXLC6-1BT2Y
HK$2.561
Each (In a Pack of 50)
units
Single 3V Surface Mount 1 40 W SOD-882T Bi-Directional - 2 - 0.25Ω 50nA 1.05mm 0.65mm
RS Stock No. 190-6781
Mfr. Part No.SMA6J10A-TR
HK$1.431
Each (On a Reel of 5000)
units
Single 10V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9mm 4.6mm
New
RS Stock No. 190-7571
Mfr. Part No.SMM4F28A-TR
HK$2.901
Each (In a Pack of 25)
units
Single 28V Surface Mount 1 400 W StmiteFLAT - - 2 - - 200nA 3.1mm 2.05mm
RS Stock No. 190-7547
Mfr. Part No.BZW06-28
HK$3.42
Each (In a Pack of 25)
units
Single 28V Through Hole 1 1.7 W DO-15 - - 2 - - 200nA 6.75mm -
RS Stock No. 190-7702
Mfr. Part No.SMA6J48A-TR
HK$3.586
Each (In a Pack of 25)
units
Single 48V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9mm 4.6mm
RS Stock No. 190-6748
Mfr. Part No.DSL03-024SC6
HK$2.46
Each (On a Reel of 3000)
units
Single 24V Surface Mount 1 - SOT-23 - - 2 - - 200nA 1.75mm 3.05mm
RS Stock No. 190-6753
Mfr. Part No.ESDCAN05-2BWY
HK$0.852
Each (On a Reel of 3000)
units
Single 36V Surface Mount 2 - SOT-323 Bi-Directional - 3 - - 100nA 2.2mm 1.35mm
RS Stock No. 190-6779
Mfr. Part No.SM6T56CA
HK$1.318
Each (On a Reel of 2500)
units
Single 47.6V Surface Mount 1 600 W DO-214AA (SMB) Bi-Directional - 2 - - 200nA 3.95mm 4.6mm
RS Stock No. 190-6777
Mfr. Part No.SM15T33AY
HK$3.18
Each (On a Reel of 2500)
units
Single 10.2V Surface Mount 1 1.5 kW DO-214AB (SMC) - - 2 - - 200nA 7.15mm 6.25mm
RS Stock No. 190-6776
Mfr. Part No.SM15T12CA
HK$2.59
Each (On a Reel of 2500)
units
Single 10.2V Surface Mount 1 1.5 kW DO-214AB (SMC) Bi-Directional - 2 - - 1µA 7.15mm 6.25mm
RS Stock No. 190-6775
Mfr. Part No.PCLT-2AT4-TR
HK$12.42
Each (On a Reel of 2500)
units
Single 24V Surface Mount 2 - TSSOP Bi-Directional - 14 - - - 5.1mm 4.5mm
RS Stock No. 190-7672
Mfr. Part No.SM15T12CA
HK$5.81
Each (In a Pack of 25)
units
Single 10.2V Surface Mount 1 1.5 kW DO-214AB (SMC) Bi-Directional - 2 - - 1µA 7.15mm 6.25mm
RS Stock No. 190-6793
Mfr. Part No.STIEC45-24AS
HK$8.527
Each (On a Reel of 2500)
units
Single 24V Surface Mount 1 - DO-214AB (SMC) - - 2 - - 200nA 7.15mm 6.25mm
RS Stock No. 190-6746
Mfr. Part No.BZW06-28
HK$1.61
Each (On a Tape of 1000)
units
Single 28V Through Hole 1 1.7 W DO-15 - - 2 - - 200nA 6.75mm -
RS Stock No. 190-6784
Mfr. Part No.SMA6J40A-TR
HK$1.34
Each (On a Reel of 5000)
units
Single 40V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9mm 4.6mm
RS Stock No. 190-7635
Mfr. Part No.ESDCAN05-2BWY
HK$2.75
Each (In a Pack of 50)
units
Single 36V Surface Mount 2 - SOT-323 Bi-Directional - 3 - - 100nA 2.2mm 1.35mm