ULN2803A smd is High-Voltage, High Current Darlington Transistor Arrays is  8 NPN Darlington connected transistors in this family of arrays are ideally suited for interfacing between low logic level digital circuitry (such as TTL, CMOS or PMOS/NMOS) and the higher current/voltage requirements of lamps, relays, printer hammers or other similar loads for a broad range of computer, industrial, and consumer applications. All devices feature open–collector outputs and free wheeling clamp diodes for transient suppression.

Features:

1. TTL, DTL, PMOS, or CMOS-Compatible Inputs
2. Output Current to 500 mA
3. Output Voltage to 50 V

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The focus keyphrase is the phrase that you want your post or page to be found for in search engines. Sometimes, it is a single word, but it usually consists of a few words. That’s why we call it a keyphrase. For example, if you want your blog post to rank for ‘healthy snacks’, then optimize your post for that term. Your focus keyphrase can also be longer. For instance, you could write an article about healthy snacks specifically made for kids and optimize for ‘healthy snacks for kids’. Or a post about healthy snacks to eat after a workout, and optimize for ‘healthy snacks after workout’.