SA33A

ON Semiconductor SA33A

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  • SA33A
  • ON Semiconductor
  • TVS DIODE 33VWM 53.3VC AXIAL
  • TVS - Diodes
  • SA33A Datasheet
  • DO-204AC, DO-15, Axial
  • DO-204AC, DO-15, Axial
  • Lead free / RoHS CompliantLead free / RoHS Compliant
  • 14154
  • Spot Inventory / Athorized Dstributor / Factory Excess Stock
  • 1 year quality assurance 》
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What is SA33A

ON Semiconductor Part Number SA33A（TVS - Diodes）, developed and manufactured by ON Semiconductor, distributed globally by Jinftry. We distribute various electronic components from world-renowned brands and provide one-stop services, making us a trusted global electronic component distributor.

SA33A is one of the part numbers distributed by Jinftry, and you can learn about its specifications/configurations, package/case, Datasheet, and other information here. Electronic components are affected by supply and demand, and prices fluctuate frequently. If you have a demand, please do not hesitate to send us an RFQ or email us immediately [email protected] Please inquire about the real-time unit price, Data Code, Lead time, payment terms, and any other information you would like to know. We will do our best to provide you with a quotation and reply as soon as possible.

SA33A Specifications

  • Part NumberSA33A
  • CategoryTVS - Diodes
  • ManufacturerON Semiconductor
  • DescriptionTVS DIODE 33VWM 53.3VC AXIAL
  • PackageDO-204AC, DO-15, Axial
  • SeriesMiniMosorb?
  • TypeZener
  • Operating Temperature-55°C ~ 150°C (TJ)
  • Mounting TypeThrough Hole
  • Package / CaseDO-204AC, DO-15, Axial
  • Supplier Device PackageAxial
  • ApplicationsGeneral Purpose
  • Unidirectional Channels1
  • Voltage - Reverse Standoff (Typ)33V
  • Voltage - Breakdown (Min)36.7V
  • Voltage - Clamping (Max) @ Ipp53.3V
  • Current - Peak Pulse (10/1000µs)9.4A
  • Power - Peak Pulse500W
  • Power Line ProtectionNo

Application of SA33A

TVS - Diodes play a vital role in the design of electronic products, and its application fields are very wide. In the field of consumer electronics, such as smartphones, tablets, televisions, etc., TVS diodes are used to protect internal integrated circuits from electrostatic discharge and power fluctuations. In the field of industrial automation, they are used to protect critical equipment such as motor drives and PLC (programmable logic controllers) to ensure the stable operation of production lines. In addition, TVS diodes are also essential components in automotive electronic systems, which can protect on-board electronic systems from transient voltages caused by engine ignition, load mutations, etc. In the field of communication and data transmission, TVS diodes are also used to protect signal transmission lines to ensure the integrity and reliability of data transmission. In general, TVS diodes, with their excellent transient voltage protection capabilities, play an irreplaceable role in ensuring the safe and stable operation of electronic equipment.

SA33A Datasheet

SA33A Datasheet , DO-204AC, DO-15, Axial,MiniMosorb?,Zener,-55°C ~ 150°C (TJ),Through Hole,DO-204AC, DO-15, Axial,Axial,General Purpose,1,33V,36.7V,53.3V,9.4A,500W,No

SA33A Classification

TVS - Diodes

TVS - Diodes are electronic components designed to protect circuits from transient overvoltage damage. They protect other sensitive components in the circuit from damage by quickly switching on and directing excess transient voltage to ground or power supply. TVS diodes are typically constructed of PN junction or metal oxide semiconductor structures with extremely fast response times and low clamping voltage characteristics. Its design principle is based on the avalanche breakdown effect, that is, when a specific voltage threshold is reached, the diode will rapidly change from a high resistance state to a low resistance state, limiting the transient voltage to a safe level. TVS diodes are used in a wide variety of electronic devices, especially those that need to protect critical circuits from lightning strikes, electrostatic discharges, or other transient voltage events.

FAQ about TVS - Diodes

  • 1. What does a TVS diode do?

    The main function of TVS diodes (Transient Voltage Suppression Diodes) is to protect electronic equipment from voltage spikes and surge voltages‌. When the two poles of the TVS diode are impacted by reverse transient high energy, it can change the high impedance between the two poles into low impedance within 10^-12 seconds, while absorbing surge power up to several kilowatts, causing the gap between the two poles to The voltage is clamped to a safe value, thereby effectively protecting precision components in electronic circuits.
    The specific working principle of TVS diodes is as follows:
    Absorb surge power‌: TVS diodes can, under reverse application conditions, when subjected to a high-energy large pulse, their working impedance immediately drops to a lower conduction state, allowing large current to pass while clamping the voltage at predetermined level. Its response time is only 10^-12 seconds.
    Protection circuit: TVS diodes are used in parallel with the protected circuit. When the circuit is working normally, the TVS diode is in a high impedance state and does not affect the circuit; when there is a surge voltage impact, the TVS diode conducts quickly, absorbs the surge energy, and protects the subsequent circuit.


  • 2. What is the difference between TVS and ordinary diodes?

    The main difference between TVS diodes and ordinary diodes lies in their working principle, application scenarios and characteristics.
    Working principle and application scenarios
    TVS diode: TVS diode (Transil Voltage Suppressor) is a high-efficiency protection device that stabilizes and suppresses overvoltage based on the breakdown effect of PN junction. When the voltage exceeds its breakdown voltage, the TVS diode will conduct quickly and release the overvoltage to ground, thus protecting the precision components in the circuit from damage by surge pulses. TVS diodes are widely used in computer systems, communication equipment, automotive electronics, household appliances and other fields to suppress transient overvoltage and electromagnetic interference.
    Ordinary Diode: The main function of an ordinary diode is unidirectional conductivity, allowing current to pass in one direction and blocking reverse current. They are widely used in rectification, signal modulation, power management and other scenarios.
    Feature comparison
    Current size: The Zener breakdown current of TVS diodes is small, usually around 1mA, while the breakdown current of ordinary diodes is larger.
    Classification: TVS diodes are divided into unipolar and bipolar according to polarity; ordinary diodes are divided into low-voltage and high-voltage types according to the level of voltage regulation, as well as N-type and P-type materials.
    Voltage regulation characteristics‌: The voltage characteristics of TVS diodes are nonlinear, the resistance before breakdown is high, and the voltage remains constant after breakdown; the voltage of ordinary diodes remains constant at the critical reverse breakdown point, realizing the voltage stabilization function.

  • 3. TVS is the abbreviation of diode. What does it mean?

    TVS is the abbreviation of Transient Voltage Suppressor, also known as Transient Voltage Suppression Diode.
    How TVS diodes work
    TVS diodes work using the avalanche breakdown effect. When the TVS diode receives a reverse voltage, the depletion layer near its PN junction will increase, causing the electric field intensity to increase, which in turn triggers the avalanche effect and causes the reverse current to increase sharply. Unlike ordinary diodes, TVS diodes can recover after avalanche breakdown and continue to work normally.

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ON Semiconductor
ON Semiconductor
Established in 1999, ON Semiconductor is a globally renowned leading semiconductor product supplier headquartered in Phoenix, Arizona, USA, with over 30000 employees. At first, ON Semiconductor was a branch of Phoenix Worldwide Semiconductor and later...
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