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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi BC183_D27Z

Name: BC183_D27Z
Brand: onsemi
SKU: BC183_D27Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC183_D27Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Datasheet:: BC183_D27Z.pdf

Description:: TRANS NPN 30V 0.1A TO-92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC183_D27Z from Fairchild Semiconductor is an NPN general-purpose bipolar junction transistor used for low-power amplification and switching in analog and digital circuits. It features V_CEO = 30 V, I_C = 100 mA, P_C = 350 mW, h_FE = 40–80 (at I_C = 10 μA to 100 mA), and f_T = 150 MHz - enabling use in audio preamplifiers, signal buffering, and discrete logic interface stages.

For engineers reviewing the BC183_D27Z datasheet, pinout, applications, or equivalent options, key selection considerations include its TO-92 package, DC current gain range across collector current, saturation voltage at defined drive conditions, noise figure of 10 dB at 1 kHz, and thermal operating range from –55°C to +150°C.

Technical Context

The BC183_D27Z operates as a silicon NPN BJT with fixed-emitter biasing capability and linear small-signal amplification characteristics. Its h_fe ranges from 125 to 900 at I_C = 2 mA and f = 1 kHz, supporting wide-bandwidth analog signal handling. The device exhibits V_BE(on) = 0.55–0.7 V and V_BE(sat) = 1.2 V at I_C = 100 mA, confirming predictable turn-on and saturation behavior under moderate drive.

Thermal performance is defined by T_J = –55°C to +150°C and P_C = 350 mW at T_A = 25°C, indicating suitability for ambient-temperature-stable consumer and industrial control boards. Output capacitance C_OB = 5 pF at V_CE = 10 V enables stable high-frequency operation up to its f_T limit of 150 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - Maximum safe collector-emitter voltage before breakdown; defines usable supply headroom in low-voltage amplifier stages.
I_C (DC)	100 mA - Continuous collector current rating; sets upper bound for load-driving capability in switching or Class-A amplifiers.
h_FE	40–80 - DC current gain range at V_CE = 5 V, spanning I_C = 10 μA to 100 mA; critical for bias stability in emitter-follower or common-emitter designs.
f_T	150 MHz - Transition frequency where \|h_fe\| = 1; confirms usability in RF front-end buffers and broadband signal conditioning up to ~50 MHz.
NF	10 dB - Noise figure at V_CE = 5 V, I_C = 200 mA, R_G = 2 kΩ, f = 1 kHz; indicates suitability for low-noise preamplifier input stages.
P_C	350 mW - Maximum power dissipation at T_A = 25°C; determines thermal derating requirements on PCBs without heatsinking.
V_BE(sat)	1.2 V - Base-emitter saturation voltage at I_C = 100 mA, I_B = 5 mA; informs minimum base drive needed for full conduction in switch applications.

Pinout & Package

BC183_D27Z is housed in a through-hole TO-92 package with standard lead configuration: 1 = Collector, 2 = Base, 3 = Emitter.

Pin/Terminal	Circuit Role	Design Meaning
1 (Collector)	Main current output terminal	Carries amplified or switched load current; connects to positive supply rail in common-emitter configurations.
2 (Base)	Control input terminal	Receives bias current to regulate collector current; requires current-limiting resistor when driven from logic or op-amp outputs.
3 (Emitter)	Current return path	Typically grounded or connected to emitter resistor for bias stabilization; forms reference node for V_BE-based turn-on threshold.

Key Features

Feature	Design Value
Wide h_fe range (125–900)	Enables consistent small-signal gain across production lots at I_C = 2 mA, reducing need for post-build gain trimming in audio and sensor interfaces.
Low noise figure (10 dB)	Supports clean amplification of microvolt-level signals in microphone preamps and transducer conditioning circuits without added filtering.
High f_T (150 MHz)	Permits stable operation in VHF oscillator buffer stages and broadband pulse amplifiers up to 50 MHz with minimal phase shift.
TO-92 mechanical compatibility	Ensures drop-in replacement for legacy BC107/BC108/BC109 family designs without footprint or assembly process changes.
Extended temperature range	Operates reliably from –55°C to +150°C junction temperature, allowing deployment in automotive engine-bay sensors and industrial PLC I/O modules.

Applications

Audio Pre-amplification	Discrete Logic Level Shifting
Use Scenario: Amplifying weak signals from electret microphones or piezoelectric sensors prior to ADC sampling. IC Role / Device Role / Timing Role: NPN BJT configured in common-emitter topology with emitter degeneration for linear gain and bandwidth control. Use Value: Delivers 10 dB noise figure and 150 MHz f_T, preserving signal integrity while enabling compact, low-cost front-end design without op-amps.	Use Scenario: Converting 3.3 V logic outputs to drive 5 V TTL-compatible inputs in mixed-voltage digital systems. IC Role / Device Role / Timing Role: NPN switch operating in saturation/cutoff modes, controlled by microcontroller GPIO pins. Use Value: V_CE(sat) ≤ 0.6 V at I_C = 100 mA ensures minimal voltage drop and fast edge transitions for reliable level translation.
LED Driver (Low Current)	Signal Buffering in Sensor Interfaces
Use Scenario: Driving indicator LEDs or low-current optocoupler inputs in industrial HMI panels. IC Role / Device Role / Timing Role: Low-side switch with base resistor limiting I_B to achieve I_C ≤ 100 mA. Use Value: 350 mW power rating and 30 V V_CEO allow direct connection to 24 V supply rails with safe margin for transient spikes.	Use Scenario: Isolating and amplifying analog outputs from RTD or thermistor bridges before multiplexing. IC Role / Device Role / Timing Role: Emitter-follower configured for unity-gain buffering with high input impedance and low output impedance. Use Value: h_FE ≥ 40 ensures stable current sourcing into 1 kΩ loads, minimizing loading error on precision resistive sensors.

Audio Pre-amplification

Discrete Logic Level Shifting

Use Scenario: Amplifying weak signals from electret microphones or piezoelectric sensors prior to ADC sampling.

IC Role / Device Role / Timing Role: NPN BJT configured in common-emitter topology with emitter degeneration for linear gain and bandwidth control.

Use Value: Delivers 10 dB noise figure and 150 MHz f_T, preserving signal integrity while enabling compact, low-cost front-end design without op-amps.

Use Scenario: Converting 3.3 V logic outputs to drive 5 V TTL-compatible inputs in mixed-voltage digital systems.

IC Role / Device Role / Timing Role: NPN switch operating in saturation/cutoff modes, controlled by microcontroller GPIO pins.

Use Value: V_CE(sat) ≤ 0.6 V at I_C = 100 mA ensures minimal voltage drop and fast edge transitions for reliable level translation.

LED Driver (Low Current)

Signal Buffering in Sensor Interfaces

Use Scenario: Driving indicator LEDs or low-current optocoupler inputs in industrial HMI panels.

IC Role / Device Role / Timing Role: Low-side switch with base resistor limiting I_B to achieve I_C ≤ 100 mA.

Use Value: 350 mW power rating and 30 V V_CEO allow direct connection to 24 V supply rails with safe margin for transient spikes.

Use Scenario: Isolating and amplifying analog outputs from RTD or thermistor bridges before multiplexing.

IC Role / Device Role / Timing Role: Emitter-follower configured for unity-gain buffering with high input impedance and low output impedance.

Use Value: h_FE ≥ 40 ensures stable current sourcing into 1 kΩ loads, minimizing loading error on precision resistive sensors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC547B	Higher h_FE (200–450), same TO-92 package, V_CEO = 45 V, P_C = 500 mW	Better suited for higher-gain, lower-noise preamp stages; slightly higher power handling	Select BC547B when >200 h_FE is required at I_C = 2 mA and supply voltage exceeds 30 V.
2N3904	Lower P_C = 350 mW (same), but tighter h_FE binning (100–300), V_CEO = 40 V, f_T = 300 MHz	Preferred for high-speed switching and RF coupling due to superior f_T and consistency	Choose 2N3904 for clock distribution buffers or fast digital isolators where bandwidth >100 MHz is critical.

Compared with BC547B and 2N3904, BC183_D27Z offers broader h_FE tolerance (40–80) and lower cost in legacy designs, making it optimal for non-critical gain applications where TO-92 footprint and thermal profile are prioritized over tight parametric control.

Availability

BC183_D27Z is available at Aetrix Electronics and suitable for audio preamplification, discrete logic level shifting, and low-current LED driving requiring stable component supply and long-term obsolescence management.

Supply support for BC183_D27Z 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_D27Z belongs to Fairchild's legacy general-purpose BJT product line, designed for cost-sensitive, medium-frequency analog and digital interface applications in consumer, industrial, and instrumentation equipment.

FAQ

What is the maximum collector-emitter voltage rating for BC183_D27Z?

The BC183_D27Z has a maximum collector-emitter voltage (V_CEO) rating of 30 V at T_C = 25°C. This rating defines the highest DC voltage that can be safely applied between collector and emitter with the base open. Exceeding this value risks avalanche breakdown. Derating is required above 25°C ambient per the datasheet's thermal curves.

Does BC183_D27Z support high-frequency signal amplification?

Yes, BC183_D27Z supports high-frequency signal amplification with a current-gain bandwidth product (f_T) of 150 MHz at V_CE = 5 V and I_C = 10 mA. This enables stable small-signal amplification up to approximately 50 MHz in properly biased common-emitter configurations, making it suitable for VHF buffer and RF detector stages.

What is the typical noise figure of BC183_D27Z and under what conditions is it measured?

The BC183_D27Z has a typical noise figure (NF) of 10 dB, measured at V_CE = 5 V, I_C = 200 mA, source resistance R_G = 2 kΩ, and frequency f = 1 kHz. This value reflects its performance in low-noise preamplifier applications, particularly for audio and sensor signal conditioning where signal-to-noise ratio is critical.

Is BC183_D27Z available in surface-mount packaging?

No, BC183_D27Z is only available in the through-hole TO-92 package. There is no official SMD variant (e.g., SOT-23 or SC-59) offered by Fairchild or ON Semiconductor for this specific part number. Designers requiring surface-mount compatibility must select alternatives such as MMBT3904 or PN2222A in SOT-23.

What are the absolute maximum storage and junction temperatures for BC183_D27Z?

The BC183_D27Z has an absolute maximum storage and junction temperature range of –55°C to +150°C. This dual rating means both stored devices and operating devices must remain within this interval. Operation near the upper limit requires thermal derating of power dissipation per the datasheet's thermal resistance curve to avoid permanent degradation.

BC183_D27Z Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 15nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 40 @ 10µA, 5V

Power - Max:: 350 mW

Frequency - Transition:: 150MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

BC183_D27Z FAQ

1.How can I place an order for BC183_D27Z through Aetrix?

Please submit a Request for Quotation (RFQ) for BC183_D27Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BC183_D27Z reliable?

The price and inventory of BC183_D27Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC183_D27Z is usually 5 days.

3.What payment methods are accepted for BC183_D27Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC183_D27Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC183_D27Z?

BC183_D27Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC183_D27Z order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BC183_D27Z?

For technical support, including BC183_D27Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC183_D27Z requirements.

6.How does Aetrix verify that BC183_D27Z is sourced from the original manufacturer or authorized distributors?

All BC183_D27Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BC183_D27Z meets industry standards.

7.What is the process for return or replacement of BC183_D27Z?

All BC183_D27Z units undergo pre-shipment inspection (PSI). If there is an issue with BC183_D27Z, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BC183_D27Z part is unused and in its original packaging.

Return procedure for BC183_D27Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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