![]() They have good gain and frequency characteristics for most analog or digital projects, but most significant to me: they are dirt cheap. Indicates Data in addition to JEDEC Requirements. The 2N3904 (NPN) and 2N3906 (PNP) are my favorite go-to small-signal transistors. Recommended Operating Conditions may affect device reliability.ġ. Functional operation above the Recommended Stresses exceeding Maximum Ratings may damage the device. It is a common NPN transistor used in many electronic devices and is offered by various manufacturers.Īs complementary type, the PNP transistor 2N3906 is recommended Key features: The 2N3904 transistor is known for its small size, low cost, high reliability, and wide availability. ![]() MARKING: FULL PART NUMBER TO-92 CASE MAXIMUM RATINGS: (TA25☌) SYMBOL UNITS Collector-Base Voltage VCBO 40 V Collector-Emitter Voltage VCEO 40 V Emitter-Base Voltage VEBO 5. When an appropriate base current (Ib) is applied, it can amplify the collector current.ĥ. NPN complementary types are 2N3903 and 2N3904. PNP complementary types are 2N3905 and 2N3906. Transfer characteristics: The 2N3904 transistor exhibits amplification characteristics of collector current (Ic) with respect to collector-emitter voltage (Vce). 2N3904 devices are silicon NPN transistors designed for general purpose amplifier and switching applications. The maximum current rating is defined as collector current (Ic) of 200mA.Ĥ. Maximum voltage and current ratings: The 2N3904 transistor has voltage ratings defined as collector-base voltage (Vcbo) of 60V, collector-emitter voltage (Vceo) of 40V, and base-emitter voltage (Vbe) of 6V. It consists of three layers, with the base, collector, and emitter connected to three separate conductors.ģ. Configuration: This transistor is a NPN (Negative-Positive-Negative) bipolar transistor. It is well-suited for small-signal processing and can be used in both digital and analog circuits.Ģ. Application: The 2N3904 transistor is mainly used for signal amplification, switching, and amplification of low-voltage and low-current signals. 2N3904 pinout has three pins: emitter, base, and collector respectively from left to right (flat side with the leads pointed downward).
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