PUMH9,115 Discrete Semiconductor Products

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The PUMH9,115 pre-biased transistor array is commonly used in small signal and low-power applications, such as those related to power control and the driving of loads in low-voltage systems. It is a unique device in the bipolar junction transistor (BJT) family, as it comes already pre-biased to a certain current level, which eliminates the need to configure its base configuration during operation.

A PUMH9,115 is composed of two identical internally-compensated Darlington transitors. These transitors feature a high current gain (beta) of 200 and an output impedance of 5 ohms. The device is designed to operate with a supply current of 5 mA and a minimum voltage of 8 VDC, and a maximum voltage of 16 VDC. It is particularly useful when driving current-hungry loads, as its high current rating allows it to efficiently handle large amounts of current without overloading.

The PUMH9,115 can be used in a wide variety of applications ranging from driving high-power relays and motors to powering infra-red LEDs and small light bulbs. It is also popular for use in automotive applications such as windshield wiper and head light control systems. Owing to its high current rating, this pre-biased transistor array is capable of controlling up to 4A of continuous current with a relatively low supply voltage.

In applications where more than 4A of current flow is required, the PUMH9,115 can be used with a separate power transistor. This additional transistor allows for a higher current rating, and is used as a buffer between the PUMH9,115 and the load. This helps reduce current losses, thus allowing the PUMH9,115 to control higher currents without requiring additional circuits.

The working principle of the PUMH9,115 is relatively simple. The pre-biased transistors form a common-emitter amplifier configuration, which amplifies the signal applied to the base of the transistors. This amplified signal is sent to the load through the emitter, which then drives the load. If the signal at the base is of a high enough magnitude, then the current drawn by the load is proportional to the signal.

The PUMH9,115 has a wide range of features that makes it ideal for a variety of applications. It has an excellent high-current capability and a wide range of operating voltages. Its unique pre-biased design simplifies the configuration of the device, and its low output impedance ensures that it can efficiently drive current-hungry loads. As such, it is a reliable and versatile transistor array for those looking for a device to control a wide range of loads.

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