STTH312B

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	1200V
Current - Average Rectified (Io):	3A
Voltage - Forward (Vf) (Max) @ If:	2V @ 3A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	115ns
Current - Reverse Leakage @ Vr:	10µA @ 1200V
Capacitance @ Vr, F:	--
Mounting Type:	Surface Mount
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Supplier Device Package:	DPAK
Operating Temperature - Junction:	175°C (Max)
Base Part Number:	STTH312

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STTH312B is a type of single diode rectifier, which is typically used in low power low current applications such as low value AC-DC power supplies and small power circuits. The maximum repetitive peak reverse voltage (VRRM) for this device is 1200V, and the maximum average output current (IO) is 3A.
The working principle of a single diode rectifier can be described as follows. When forward biased, the diode allows current to flow from anode (+) to cathode (-). As the voltage across the diode reaches its forward voltage drop, the diode starts to conduct current. Conversely, when reverse biased, the diode opposes any current from flowing from anode to cathode. This blocking of current flow will continue as long as the voltage applied over the diode remains below its reverse breakdown voltage.
STTH312B has a wide range of applications. For example, it can be used in power supplies to rectify alternating current into a direct current. This device can also be used in the control of lighting systems, in the protection of battery-tied loads, and in the isolation of circuits.
Furthermore, STTH312B has several unique features such as low forward voltage drop, low reverse leakage, avalanche breakdown capability, and low forward voltage recovery time. These characteristics provide excellent resistance to surge current and good high frequency characteristics, enabling it to sustain large current pulse and significant AC component. In addition, this device can be used with a power transistor as a high power switch due to its low forward voltage.
In conclusion, STTH312B is an ideal device for small power AC-DC supplies and circuits. Its single diode rectifier design is capable of blocking large reverse voltages and allowing for low forward voltage drop, low reverse leakage, and avalanche breakdown capability. Its many features make this device suitable for numerous applications such as power supplies, lighting systems, circuit isolation, surge protection, and high power switching.

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