TPSMP10AHM3/85A

Voltage - Clamping (Max) @ Ipp:	14.5V
Supplier Device Package:	DO-220AA (SMP)
Package / Case:	DO-220AA
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 185°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	300W
Current - Peak Pulse (10/1000µs):	20.7A
Series:	Automotive, AEC-Q101, PAR®, eSMP®
Voltage - Breakdown (Min):	9.5V
Voltage - Reverse Standoff (Typ):	8.55V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to TVS Diodes

TVS diodes, also known as transient voltage suppressors (TVS), are voltage-triggered, unidirectional, nonlinear, circuit protection devices that protect against electrical overstress (EOS). These devices are better than traditional fuse and breaker protection methods as they have a much faster response time to surges and spikes, and can handle much higher peak currents. TVS diodes are typically used in AC and DC power supply lines and communication lines to protect sensitive electronic circuits. The most common types of TVS diodes are the zener diode, transient voltage suppression diode (TVS), avalanche diode, and unidirectional protection diode (UPD).

The TPSMP10AHM3/85A

The TPSMP10AHM3/85A is a unidirectional, TVS diode manufactured by STMicroelectronics. It has an operating voltage of 85V (DC) and a peak pulse power of 1KW. The TPSMP10AHM3/85A has a wide operating temperature range of -55°C to +150°C, and a low capacitance of 0.35pF. It is available in several packages including SMB, SMC, SMD, SMP, and SMV.

Applications of TPSMP10AHM3/85A

The TPSMP10AHM3/85A is primarily used to protect low-power AC and DC circuits against overvoltage damage. It can also be used to protect telecommunication lines, automotive circuits, and industrial equipment from voltage transients.

Working Principle of TPSMP10AHM3/85A

The TPSMP10AHM3/85A is designed to suppress voltage transients caused by electrostatic discharge (ESD), voltage surges, and other overvoltage conditions. It works instantaneously when the voltage applied to it exceeds a certain level (clamping voltage). When the voltage application is below the clamping voltage, the diode is in its non-conducting state and does not conduct current. But when the voltage application reaches the clamping voltage, the diode transits to its conducting state and starts conducting current up to a certain level. This reduces the voltage applied to the circuit and thus protects it from damage.

Conclusion

The TPSMP10AHM3/85A is a special type of unidirectional voltage-protecting transient voltage suppression diode designed to protect sensitive electronic circuits from overvoltage and other electrical overstress conditions. It is suitable for use in a wide range of circuit applications including communications, automotive, and industrial circuits. The diode works by triggering an immediate current flow and reducing the voltage applied to the circuit upon reaching the diode\'s clamping voltage, effectively protecting the circuit from damage.

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