SZMM3Z15VT1G

SZMM3Z15VT1G

Part Number: SZMM3Z15VT1G

Manufacturer: Onsemi

Description: Zener Diodes

Shipped from: Shenzhen/HK Warehouse

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SZMM3Z15VT1G Description

The Zener diodes in this series have a power dissipation of 300 mW and come in a SOD323 surface mount package. They excel in circumstances where space is at a premium while providing voltage regulation protection. Phones, portable media players, and PC boards with many components can all benefit from their use.

Specification Features

  • The typical operating range of Zener diodes is between 2.4 V and 75 V.
  • Maximum 300 mW of Steady-State Power.
  • Miniature Body Trace Size: 0.067″ x 0.049″ (1.7 mm x 1.25 mm).
  • Extremely Short Stature: 0.035″ (0.9 mm).
  • Each Unit Contains 4.507 milligrams.
  • Human Body SZ Model Class 3 (> 16 kV) ESD Rating For Use in Automotive and Other Applications With Specialized Site and Control Change Requirements; AECQ101 Qualified and PPAP Capable Prefix.

Product Technical Specifications

Part Status Active
Automotive Yes
PPAP Yes
Type Voltage Regulator
Configuration Single
Voltage Nominal of a Zener (V) 15
Tolerance for Zener Voltage 5%
Total Power Dissipation (mW) 300
Reverse Leakage Current Maximum (uA) 0.05
Zener Impedance Maximum (Ohm) 30
Highest Power Dissipation at 25°C (mW) 300
(°C) Minimum Operation Temperature -65
Temperature Limit (°C) for Maximum Operation 150
Temperature Grade of Supplier Automotive
Voltage Temperature Coefficient Typically 11.1mV/K
Packaging Tape and Reel
Mounting Surface Mount
Package Height 0.9
Package Width 1.25
Package Length 1.7
PCB changed 2
Standard Package Name SOD
Supplier Package SOD-323
Pin Count 2
Lead Shape Gull-wing

What is a Zener Diode?

Zener diodes are discrete semiconductor devices with silicone bases that enable bidirectional current flow, either forward or backward. A P-N silicone junction, extensively doped in diodes, is designed to conduct in the opposite direction once a specific voltage threshold has been reached.

Reverse breakdown voltage is predetermined for Zener diodes. Once they reach this point, they begin to conduct current and may work continuously in the reverse bias direction without suffering damage. A consistent voltage drop across the diode may be maintained over a wide range of voltages is one of the critical advantages of Zener diodes. As a result, voltage regulation applications can make use of Zener diodes.

Zener Diode Characteristics

When used in the forward-bias mode, Zener diodes behave similarly to ordinary diodes. Their 0.3 to 0.7V bias turn-on voltage ranges. In most applications, a little leakage current flow occurs when a connection is made in reverse mode. There will be current flowing through the diode as the reverse voltage grows to the predetermined breakdown value. When the current reaches its maximum (controlled by the resistors connected in series), it stabilizes and stays constant over a broad range of applied voltage.

The voltage remains nearly constant as long as current flows through the diode. Even for large changes in current, this holds so long as the diode current is kept below its maximum current and above its breakdown current.

When it comes to regulating and stabilizing changes in load or supply against a voltage source, the strong self-control of a Zener diode is quite helpful. As a result, it qualifies as an essential quality because it permits the use of the diode in numerous voltage regulator applications.

How Does a Zener Diode Work?

The reason for the diode’s failure under the reverse bias condition yields information about the Zener diode’s operating principle. There usually are only two types: avalanche and Zener.

● Zener Breakdown

A Zener breakdown occurs when the reverse bias voltage is between 2V and 8V. Even at this low voltage, the valence electrons can be forced apart from the nucleus by the electric field’s strength. Due to the formation of mobile electron-hole pairs, current flow is increased.

With a large electric field and low breakdown voltage, highly-doped diodes frequently have zener breakdowns. The valence electrons gather more energy as the temperature rises, necessitating less external voltage. Additionally, this implies temperature-related reductions in Zener breakdown voltage.

● Avalanche Breakdown

For light-doped diodes with a high breakdown voltage, voltage breakdown occurs in the reverse bias situation at a minimum of 8V. The covalent bond is broken when electrons in the diode collide with one another. The covalent bonds can be damaged more efficiently because the electrons’ velocity also rises when the voltage rises. Avalanche breakdown voltage increases with temperature, it should be noted.

Can You Connect Multiple Zener Diodes in a Series?

You can connect several Zener diodes in series to make a certain Zener voltage. If you are using more than one diode, you must also keep an eye on the Zener current to ensure you don’t exceed the maximum Zener current. This occurs because the lowest connected diode in the series causes the maximum permitted Zener current to equal that diode’s current. Additionally, if the two Zener diodes do not have the same Zener current parameters, one will not exhibit the specified Zener current or voltage when connected in series.

What is the Difference Between a Zener Diode vs. a Diode?

A semiconductor device known as a diode only conducts in one direction (unidirectional). The main distinction between zener diodes and other semiconductor devices is that the former conduct under both forward and reverse bias conditions. Doping intensity is a critical distinction between the two types. In contrast to Zener diodes, which are doped more heavily to enable sharper breakdown voltage, conventional diodes are often just lightly doped.

Final thoughts

A diode must be run in the breakdown region. To solve the issue, use an ON Semiconductor SZMM3Z15VT1G zener diode voltage regulator. It has a 5 mA test current. It has a 0.05 A maximum leakage current. It may dissipate up to 200 mW of power. This product will come in a tape and reel package so the parts can be together correctly. The nominal voltage and voltage tolerance of this zener device is 15 V and 5%, respectively. The operating temperature range for this zener diode is -65 °C to 150 °C. It is created in just one design.

Are you interested in learning more about the SZMM3Z15VT1G, or are you ready to place an order for one? Make sure to get in touch with ICRFQ, as this is the greatest site to find electronic components made in China. We will do everything we can to ensure you get the best products at the best prices.

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