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

onsemi BCW60C

Name: BCW60C
Brand: onsemi
SKU: BCW60C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCW60C

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BCW60C.pdf

Description:: TRANS NPN 32V 0.1A SOT-23-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCW60C from Fairchild Semiconductor is an NPN epitaxial silicon general-purpose transistor in SOT-23 package, rated for 32 V V_CEO, 100 mA I_C, and 350 mW P_C, with h_FE = 100–250 at I_C = 2 mA, used in low-voltage signal switching and amplification stages of portable audio and sensor interface circuits.

For engineers reviewing the BCW60C datasheet, pinout, applications, or equivalent options, key selection considerations include its 125 MHz f_T, 4.5 pF C_ob, V_CE(sat) ≤ 0.55 V at 50 mA, noise figure of 6 dB at 1 kHz, and SOT-23 footprint compatibility with space-constrained PCB layouts.

Technical Context

The BCW60C operates as a medium-speed, low-power NPN bipolar junction transistor optimized for linear amplification and digital switching in DC–125 MHz signal paths. Its h_FE range (100–250) and low V_BE(on) (0.55–0.75 V) support stable biasing in emitter-follower and common-emitter configurations with minimal base drive current.

Designed for Ta = 25°C operation, it features low output capacitance (4.5 pF), fast switching (t_ON = 150 ns, t_OFF = 800 ns), and specified breakdown voltages (V_CBO = V_CEO = 32 V, V_EBO = 5 V), enabling reliable use in 3.3 V/5 V logic interfacing and analog front-end buffering.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	32 V - Maximum safe collector-emitter voltage before avalanche breakdown; supports 5 V rail and 3.3 V logic-level switching without derating.
I_C	100 mA - Continuous collector current rating; suitable for driving small relays, LEDs, or pre-driver stages in discrete power control.
h_FE	100–250 @ I_C = 2 mA - DC current gain range ensures predictable base current sizing for bias networks in amplifier or switch designs.
f_T	125 MHz - Unity-gain frequency confirms usable bandwidth up to ~10–20 MHz for small-signal amplification in RF front-ends or clock buffers.
C_ob	4.5 pF @ V_CB = 10 V - Low output capacitance minimizes Miller effect, preserving high-frequency response in common-emitter gain stages.
V_CE(sat)	≤ 0.55 V @ I_C = 50 mA, I_B = 1.25 mA - Low saturation voltage reduces conduction loss and self-heating in saturated-switch applications.
NF	6 dB @ I_C = 0.2 mA, f = 1 kHz - Confirmed noise performance for low-level audio preamplifier or sensor signal conditioning stages.

Pinout & Package

SOT-23 plastic surface-mount package with gull-wing leads; 1.3 mm × 2.9 mm footprint, 1.1 mm height, and JEDEC MO-178 compliant outline.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biasing the BE junction; requires current-limited drive to achieve target h_FE-dependent collector current.
2	Emitter	Current return path; connected to ground or low-impedance reference in common-emitter configuration; defines V_BE threshold.
3	Collector	Output current sink; connects to load or next stage; must remain ≤32 V below emitter to avoid breakdown.

Key Features

Feature	Design Value
Low V_CE(sat)	0.55 V max at 50 mA enables efficient switching in battery-powered load drivers with <100 mW dissipation.
High f_T	125 MHz allows stable small-signal amplification up to mid-VHF band, supporting clock distribution and RF detector applications.
Low C_ob	4.5 pF limits capacitive loading on preceding stages, improving stability and bandwidth in multi-stage amplifiers.
Controlled h_FE binning	BCW60C's 100–250 h_FE range provides consistent gain behavior across production lots, reducing calibration overhead in analog circuits.
Low-noise operation	6 dB NF at 1 kHz makes BCW60C suitable for microphone preamps and precision sensor interfaces where SNR is critical.

Applications

Portable Audio Amplifiers	Microcontroller GPIO Expanders
Use Scenario: Amplifying line-level signals from MP3 decoders or DAC outputs in handheld media players. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with fixed bias network. Use Value: 125 MHz f_T and 6 dB noise figure preserve audio fidelity up to 20 kHz while maintaining low quiescent current (<1 mA).	Use Scenario: Driving LED indicators or optocoupler inputs from 3.3 V microcontroller I/O pins with limited sink/source capability. IC Role / Device Role / Timing Role: Digital switch configured in common-emitter mode with base resistor limiting. Use Value: V_CE(sat) ≤ 0.55 V ensures >95% voltage transfer to load, minimizing logic-level ambiguity and power loss.
Industrial Sensor Interfaces	Low-Power RF Detectors
Use Scenario: Buffering millivolt-level thermistor or bridge sensor outputs before ADC input in battery-operated condition monitoring nodes. IC Role / Device Role / Timing Role: Emitter-follower unity-gain buffer providing high input impedance and low output impedance. Use Value: h_FE ≥ 100 ensures stable bias current delivery; 4.5 pF C_ob prevents signal roll-off at sensor bandwidths ≤100 kHz.	Use Scenario: Envelope detection of 10–30 MHz RF signals in low-cost wireless receivers or RFID readers. IC Role / Device Role / Timing Role: Nonlinear rectifier in diode-connected or grounded-base configuration. Use Value: 125 MHz f_T and low V_BE(on) (0.55 V) enable reliable detection sensitivity down to –20 dBm input levels.

Portable Audio Amplifiers

Microcontroller GPIO Expanders

Use Scenario: Amplifying line-level signals from MP3 decoders or DAC outputs in handheld media players.

IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with fixed bias network.

Use Value: 125 MHz f_T and 6 dB noise figure preserve audio fidelity up to 20 kHz while maintaining low quiescent current (<1 mA).

Use Scenario: Driving LED indicators or optocoupler inputs from 3.3 V microcontroller I/O pins with limited sink/source capability.

IC Role / Device Role / Timing Role: Digital switch configured in common-emitter mode with base resistor limiting.

Use Value: V_CE(sat) ≤ 0.55 V ensures >95% voltage transfer to load, minimizing logic-level ambiguity and power loss.

Industrial Sensor Interfaces

Low-Power RF Detectors

Use Scenario: Buffering millivolt-level thermistor or bridge sensor outputs before ADC input in battery-operated condition monitoring nodes.

IC Role / Device Role / Timing Role: Emitter-follower unity-gain buffer providing high input impedance and low output impedance.

Use Value: h_FE ≥ 100 ensures stable bias current delivery; 4.5 pF C_ob prevents signal roll-off at sensor bandwidths ≤100 kHz.

Use Scenario: Envelope detection of 10–30 MHz RF signals in low-cost wireless receivers or RFID readers.

IC Role / Device Role / Timing Role: Nonlinear rectifier in diode-connected or grounded-base configuration.

Use Value: 125 MHz f_T and low V_BE(on) (0.55 V) enable reliable detection sensitivity down to –20 dBm input levels.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC847C	Higher h_FE (110–800), same SOT-23 package, V_CEO = 45 V, f_T = 100 MHz	Better gain consistency for precision amplifiers; higher voltage margin for 12 V systems	Select BC847C when wider h_FE tolerance or higher breakdown voltage is required; verify layout compatibility with identical pinout.
MMBT3904	Same V_CEO (40 V), lower h_FE (100–300), f_T = 300 MHz, V_CE(sat) = 0.2 V @ 10 mA	Superior high-frequency switching and lower saturation loss at light loads	Choose MMBT3904 for faster digital switching or ultra-low-power biasing; note tighter h_FE spread may require recalibration.

Compared with BCW60C, BC847C offers higher voltage headroom and broader h_FE range for robust bias design, while MMBT3904 delivers faster switching and lower V_CE(sat) at reduced currents-both retain SOT-23 compatibility but differ in gain-bandwidth trade-offs and thermal dissipation profiles.

Availability

BCW60C is available at Aetrix Electronics and suitable for portable audio amplifiers, industrial sensor interfaces, microcontroller GPIO expansion, and low-power RF detectors requiring stable component supply and long-term obsolescence management.

Supply support for BCW60C 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 BCW60C belongs to Fairchild's legacy SOT-23 NPN transistor family, designed for cost-sensitive, space-constrained general-purpose amplification and switching in consumer, industrial, and computing applications.

FAQ

What is the maximum collector current rating for BCW60C?

The BCW60C has a maximum continuous collector current (I_C) rating of 100 mA at T_a = 25°C. Derating is required above 25°C ambient per the thermal resistance curve in the original Fairchild datasheet. This rating supports typical use cases such as LED driving, sensor buffering, and low-power switching without forced cooling.

Does BCW60C have a documented pinout for SOT-23?

Yes, BCW60C uses the standard SOT-23 pinout: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. This configuration is explicitly confirmed in the Fairchild BCW60A/B/C/D datasheet Rev. B2 and matches JEDEC MO-178 mechanical specifications. No alternate pinouts are defined for this part.

What is the DC current gain (h_FE) range of BCW60C?

The BCW60C exhibits h_FE = 100–250 when measured at V_CE = 5 V and I_C = 2 mA. This binned range is distinct from BCW60B (40–120) and BCW60D (220–630), ensuring predictable gain behavior for bias network design in amplifiers and switches using BCW60C.

Can BCW60C be used in RF applications?

Yes, BCW60C is specified with f_T = 125 MHz and C_ob = 4.5 pF, making it suitable for RF detector, oscillator buffer, and low-frequency RF amplifier applications up to ~30 MHz. Its noise figure of 6 dB at 1 kHz also supports sensitive receive-path front-ends in narrowband ISM-band devices.

Is BCW60C RoHS compliant?

The BCW60C was manufactured under Fairchild's pre-2006 product release cycle and predates mandatory RoHS enforcement. While many SOT-23-packaged Fairchild transistors were later qualified as RoHS-compliant, BCW60C itself carries no official RoHS certification in its original datasheet or packaging markings. For new designs, consult ON Semiconductor's current equivalents or verify compliance via material declarations.

BCW60C Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 32 V

Vce Saturation (Max) @ Ib, Ic:: 550mV @ 1.25mA, 50mA

Current - Collector Cutoff (Max):: 20nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 2mA, 5V

Power - Max:: 350 mW

Frequency - Transition:: 125MHz

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BCW60C FAQ

1.How can I place an order for BCW60C through Aetrix?

Please submit a Request for Quotation (RFQ) for BCW60C 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 BCW60C reliable?

The price and inventory of BCW60C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCW60C is usually 5 days.

3.What payment methods are accepted for BCW60C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCW60C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCW60C?

BCW60C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCW60C 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 BCW60C?

For technical support, including BCW60C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCW60C requirements.

6.How does Aetrix verify that BCW60C is sourced from the original manufacturer or authorized distributors?

All BCW60C 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 BCW60C meets industry standards.

7.What is the process for return or replacement of BCW60C?

All BCW60C units undergo pre-shipment inspection (PSI). If there is an issue with BCW60C, 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 BCW60C part is unused and in its original packaging.

Return procedure for BCW60C:

1.Submit a request within 90 days.

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

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