Relays
A relay is an electrically operated switch that allows a low power circuit to control a high power circuit. It consists of a coil, which is activated by an electric current, and a set of contacts that open or close when the coil is activated. Relays have a wide range of use cases, including controlling the flow of electricity in a circuit, protecting electrical components from damage, and amplifying signals. They are commonly used in automotive systems, HVAC systems, and control panels. Flux.ai has the world's largest community-driven public library of relays, with footprints, symbols, datasheets, and simulation models. This library is a valuable resource for engineers and designers looking for reliable and accurate information on relays.
MMBT3904-TP
Bipolar (BJT) Transistor NPN 40V 200mA 300MHz 350mW Surface Mount SOT-23 The MMBT3904-TP is an NPN general-purpose bipolar junction transistor (BJT) in a SOT-23 surface-mount package. It is a compact SMD version of the classic 2N3904, designed for switching and low-power signal amplification in a wide range of electronic circuits. It is commonly used in embedded systems, consumer electronics, and PCB designs where small size and reliable switching performance are required. Key Features NPN Bipolar Junction Transistor (BJT) Suitable for switching and amplification applications SOT-23 Surface-Mount Package Compact footprint for high-density PCB designs Collector-Emitter Voltage (Vceo) Typically up to 40V Collector Current Up to 200 mA continuous Low Power Operation Designed for small signal and low-power switching tasks High Gain (hFE) DC current gain typically 100–300 Fast Switching Capability Suitable for digital and pulse applications Wide Operating Temperature Range Typically -55°C to +150°C High Reliability Stable performance for general-purpose use RoHS Compliant Environmentally compliant manufacturing Typical Applications Signal switching in digital circuits LED driving circuits Small relay or load switching Sensor interface circuits General-purpose amplification stages 2N3904 SOT-23 #CommonPartsLibrary #Transistor #BJT #NPN #MMBT3904
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