SMDA03-6E3/TR7

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Introduction to SMDA03-6E3/TR7 TVS-Diodes

TVS – diodes are important components used for the protection of electronic components from voltage transient surges. SMDA03-6E3/TR7 from ON Semiconductor is a popular range of these devices which are used in a variety of applications. It is a three-pin dual-channel diode designed for use in automotive and consumer applications.

Application Field of SMDA03-6E3/TR7 TVS-Diodes

The SMDA03-6E3/TR7 TVS-diodes are suitable for use in a variety of automotive and consumer applications. These include automotive power line protection, DC-to-DC converter protection, relay contact protection, and protection of control signals. The device also finds use in consumer applications where over-voltage protection is necessary, including portable electronics and household appliances.

The SMDA03-6E3/TR7 TVS-diodes come with a lead-free package, making it suitable for lead-free applications in accordance with the RoHS Directive 2011/65/EU. The device is approved according to UL1449 4th Edition, ensuring the highest safety standards for end-use applications.

Working Principle of SMDA03-6E3/TR7 TVS-Diodes

The SMDA03-6E3/TR7 TVS-diodes are based on two back-to-back Zener-diode structures with a common cathode configuration. The forward part of the diode is connected to the common cathode, while the reverse-part of the diode is connected to the anode. When no voltage transient surge is applied, the diode behaves as a standard Zener diode, with a reverse voltage blocking capability up to 8.0V. When a voltage transient spike occurs, the excess current is clamped to a level determined by the breakdown voltage of the device (6.3V). During this process the device dissipates the excess energy, thus protecting the connected electronic component from damage.

The SMDA03-6E3/TR7 TVS-diodes can clamp transients up to 6.0A peak. This provides enough protection for most low-power electronic components. The device maintains a low on-state resistance, usually in the range of 1 Ohm to 2 Ohms. The maximum peak clamping voltage is 8.0V. The device is also highly temperature stable, with junction temperature range from -55°C to +150°C.

Conclusion

The SMDA03-6E3/TR7 TVS-diodes from ON Semiconductor provide an effective method for protecting low-power electronic components from voltage transients. The device is suitable for a variety of automotive and consumer applications, where it provides reliable protection at high temperatures. The device is highly temperature-stable and can easily handle up to 6A peak transients.

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