TPC12CAHM3/H Circuit Protection

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Transient Voltage Suppressors (TVS) are devices used to protect sensitive electronic components from transient voltage spikes. Since they are the last line of defense against these surges, it’s important to have quality TVS Diodes in any electronic system. The TPC12CAHM3/H is a unidirectional TVS Diode Array from Littelfuse, specifically designed to protect against line to line and line to ground voltage transients.

TPC12CAHM3/H Features and Benefits

The TPC12CAHM3/H is a single component solution for circuit protection which features low capacitance for maximum signal integrity. It is also able to handle high peak operating power and can dissipate up to 5.00W of power. The low leakage current makes it suitable for use in high speed digital systems, as the total leakage current for the device is typically 0.5mA. The device also features fast response time, usually in the sub-nanosecond range.

The TPC12CAHM3/H is designed to protect against overvoltage and ESD transient events, and is compliant with IEC 61000-4-5, Level 4, and EIA/TIA 603. The device is housed in a miniature SMA package, with excellent surface-mount characteristics and secure mount capability. It is RoHS Compliant and Lead Free, and also meets the safety requirements of UL 94V-O.

TPC12CAHM3/H Application Fields

The TPC12CAHM3/H is particularly well-suited to a broad range of application fields, including: automotive, computers, consumer electronics, industrial automation, computer peripherals, networking systems, telecommunications, and general purpose circuit protection. In particular, the device is designed to protect ICs, MOSFETs, relays, transformers, and other sensitive components in automotive systems.

The array of features offered by the TPC12CAHM3/H enable it to provide reliable circuit protection for a wide range of sensitive components. It also offers a high level of flexibility, allowing the user to tailor the level of transient protection to suit the application’s requirements.

TPC12CAHM3/H Working Principle

The TPC12CAHM3/H consists of two series-connected Zener diodes, each with a nominal breakdown voltage of 12V, and a series-connected resistor with a nominal value of 10kΩ. This array provides bidirectional protection with peak pulse current performance of 12A. The Zener diodes are triggered by an overvoltage event, clamping the voltage to the specified breakdown voltage and allowing the resistor to dissipate the remaining energy. As the current increases, so does the voltage across the resistor, which eventually reaches the breakdown voltage of the Zener diodes and causes them to be triggered. After the transient event is over, the diodes are reset and the circuit is protected from the overvoltage event.

The TPC12CAHM3/H can also be used in combination with other components such as varistors and ESD protection elements to create an all-round overvoltage/transient protection solution.

Conclusion

In conclusion, the TPC12CAHM3/H from Littelfuse is a reliable unidirectional TVS Diode Array that has been specifically designed for high speed digital systems and automotive applications. The device is available in a miniature SMA package, with fast response time and excellent surface-mount characteristics. It also provides peak pulse current performance of 12A and exceeds IEC/EIA 603 requirements for both overvoltage and ESD protection.

The specific data is subject to PDF, and the above content is for reference