CM1238-08DE

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The CM1238-08DE is a high performance Transient Voltage Suppressor (TVS) diode from ON Semiconductor, employed for protecting overvoltage conditions in a wide range of electronic applications. It has an unidirectional mode of operation where the diode conductivity increases with the increase in voltage driving the current flow from anode to cathode.

The CM1238-08DE is an 8.0 Amp Surface Mount TVS diode with an operating voltage range from 5.0 V to 120.0 Vdc. It is housed in a small and ultra thin, PQFN package featuring an ultra low profile of 0.25 mm. The operating junction temperature range is from -55°C to +150°C.

This diode is composed of a number of voltage dependent planar layers, operated in parallel. When voltage across the diode exceeds a predetermined threshold, avalanche breakdown occurs to provide a conducting path for the current. This facilitates the overvoltage protection of the device.

The CM1238-08DE diode is designed for a wide range of applications including automotive, consumer, industrial, lighting, medical, motor drives, power management, power supply and telecom/datacom. It can be used for protecting against Electrical Overstress (EOS), Electrostatic Discharge (ESD), coupled noise and transients.

The design and construction of CM1238-08DE make it extremely robust and reliable. It has a high clamping voltage and low dynamic resistance, and is rated to dissipate high levels of energy without sustaining breakdown. The diode can absorb up to 170V of peak pulse, and is able to provide an overvoltage protection according to the IEC 61000-4-2 standards.

A key feature of the CM1238-08DE is its low capacitance which is extremely important when protecting high speed data line applications. This low service capacitance reduces the gate induction time which in turn ensures that fast transients are clamped quickly and accurately. The CM1238-08DE also features a fast recovery time of less than 5ms, which further enhances its reliability.

In summary, the CM1238-08DE is an efficient and reliable TVS diode which is designed to protect a wide range of electronic applications from overvoltage damage. Its robust design, low clamping voltage, low dynamic resistance and low capacitance make it the ideal choice for high speed data line protection.

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