onsemi BC183_D26Z

Overview

BC183_D26Z from Fairchild Semiconductor is an NPN general-purpose bipolar junction transistor (BJT) designed for low-power amplification and switching in linear and digital circuits. It features a 30 V V_CEO, 100 mA I_C, 350 mW P_C, 150 MHz f_T, and TO-92 package - commonly used in audio preamplifiers, signal buffering, and discrete logic interfaces.

For engineers reviewing the BC183_D26Z datasheet, pinout, applications, or equivalent options, key selection considerations include its DC current gain range (h_FE = 40–80 at I_C = 100 mA), low V_CE(sat) (0.25 V @ 10 mA/0.5 mA), noise figure (10 dB @ 1 kHz), and thermal stability across −55°C to +150°C junction temperature.

Technical Context

The BC183_D26Z operates as a silicon NPN BJT with fixed-emitter biasing capability and exhibits predictable small-signal behavior up to 100 MHz. Its h_fe ranges from 125 to 900 at I_C = 2 mA, supporting wide-band amplification, while f_T = 150 MHz confirms suitability for RF front-end stages below VHF.

It delivers stable saturation performance with V_CE(sat) ≤ 0.6 V at I_C = 100 mA and V_BE(sat) = 1.2 V under same conditions, enabling reliable switching in low-voltage logic-level interfaces. C_OB = 5 pF at V_CE = 10 V supports minimal Miller effect in common-emitter configurations.

Key Specifications

Pinout & Package

BC183_D26Z is housed in a through-hole TO-92 package with standard lead configuration: 1 = Collector, 2 = Base, 3 = Emitter. The package supports manual soldering and prototyping, with thermal resistance R_θJA ≈ 357°C/W typical.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose amplifier applications.

Compared with BC547B and 2N3904, BC183_D26Z offers lower noise (10 dB vs. ~15–20 dB) and optimized V_CE(sat) for low-loss switching at moderate currents, making it preferable in cost-sensitive audio and precision analog buffer roles where gain consistency matters more than raw speed.

Availability

BC183_D26Z is available at Aetrix Electronics and suitable for audio preamplification, discrete logic level shifting, and low-current LED driving requiring stable component supply across industrial, consumer, and educational electronics programs.

Supply support for BC183_D26Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The BC183_D26Z belongs to Fairchild's legacy general-purpose BJT family, engineered for reliability and consistency in cost-sensitive linear and switching applications across consumer and industrial electronics.

FAQ

What is the maximum collector-emitter voltage rating for BC183_D26Z?

The BC183_D26Z has a maximum collector-emitter voltage (V_CEO) rating of 30 V at T_C = 25°C. This value is confirmed in the Absolute Maximum Ratings table and must not be exceeded to prevent avalanche breakdown. Derating is required above 25°C ambient per the device's thermal characteristics, and actual safe operating voltage depends on simultaneous current and power dissipation limits defined in the SOA curve.

Does BC183_D26Z support audio-frequency amplification?

Yes, BC183_D26Z supports audio-frequency amplification with a measured noise figure of 10 dB at 1 kHz and I_C = 200 mA. Its h_fe range (125–900 at 2 mA) and f_T = 150 MHz ensure stable gain up to 20 kHz, and typical V_BE(on) (0.55–0.7 V) enables predictable biasing in Class-A preamp stages. It is widely used in microphone and sensor signal conditioning circuits.

What is the pin configuration of BC183_D26Z?

The BC183_D26Z uses a standard TO-92 package with pinout: Pin 1 = Collector, Pin 2 = Base, Pin 3 = Emitter - verified in the official Fairchild BC183 Rev. A datasheet diagram. This configuration matches industry-standard NPN TO-92 orientation and is compatible with common PCB footprints and socket adapters used for discrete transistor evaluation.

Can BC183_D26Z be used as a saturated switch?

Yes, BC183_D26Z is qualified for saturated switching with V_CE(sat) = 0.25 V at I_C = 10 mA / I_B = 0.5 mA and 0.6 V at I_C = 100 mA / I_B = 5 mA. Its low saturation voltage minimizes power loss, and the 350 mW power dissipation rating allows continuous operation at ≤ 100 mA with appropriate thermal management on standard FR-4 boards.

What is the junction temperature range for BC183_D26Z?

The BC183_D26Z has a specified junction temperature range of −55°C to +150°C, matching its storage temperature range. This wide operating envelope supports deployment in automotive under-hood modules, industrial controls, and outdoor equipment. Thermal derating begins above 25°C ambient, and maximum allowable I_C decreases linearly with rising case temperature per the Safe Operating Area (SOA) graph in the datasheet.