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

Nexperia USA Inc. BCW72,215

Name: BCW72,215
Brand: Nexperia USA Inc.
SKU: BCW72,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCW72,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCW72,215.pdf

Description:: TRANS NPN 45V 0.1A TO-236AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,628

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Product details

Overview

BCW72,215 from Nexperia is an NPN general-purpose bipolar junction transistor (BJT) in SOT23 package, rated for 45 V V_CEO, 100 mA I_C, and 250 mW P_tot, with DC current gain h_FE of 200–450 at I_C = 2 mA, used in low-power signal switching and amplification circuits in consumer audio and industrial sensor interfaces.

For engineers reviewing the BCW72,215 datasheet, BCW72,215 pinout, BCW72,215 application, or BCW72,215 equivalent, this page delivers verified electrical parameters, thermal resistance (500 K/W), noise figure (≤10 dB), transition frequency (100 MHz), and SOT23 terminal mapping to support schematic validation, PCB layout, and functional replacement decisions.

Technical Context

This NPN BJT operates in linear or saturation mode with V_BE(sat) ≤ 850 mV at I_C = 50 mA and I_B = 2.5 mA, and exhibits low collector capacitance (2.5 pF) and high f_T (100 MHz), enabling stable small-signal amplification up to mid-VHF range.

Its low-noise design (F ≤ 10 dB at 1 kHz) and tight h_FE spread (200–450) support consistent biasing in discrete amplifier stages, while the 50 V V_CBO rating provides margin for transient voltage handling in unregulated supply rails.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage under open-base DC conditions; defines upper rail limit in switch/amplifier designs.
I_C (DC)	100 mA - Continuous collector current capacity; sets maximum load drive capability in active-region operation.
h_FE	200–450 - DC current gain at I_C = 2 mA, V_CE = 5 V; determines base drive requirements for predictable saturation.
f_T	100 MHz - Transition frequency; confirms usable bandwidth for RF preamp or oscillator buffer applications up to ~10 MHz.
R_{th j-a}	500 K/W - Junction-to-ambient thermal resistance on FR4 PCB; implies ~125 °C rise at full 250 mW dissipation.
C_c	2.5 pF - Collector capacitance at V_CB = 10 V; limits high-frequency gain roll-off and affects stability in tuned circuits.
F	≤10 dB - Noise figure at I_C = 200 μA, 1 kHz; qualifies use in low-level analog front-end amplification where SNR matters.

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-pin, 1.3 mm × 2.9 mm footprint, 0.95 mm height, JEDEC-compliant lead pitch (0.95 mm), designed for reflow soldering on standard FR4 PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control electrode; requires current-limited drive (I_B ≤ 200 mA peak) to achieve target I_C without thermal runaway.
2	Emiter	Current return path; connected to ground or low-impedance node; must maintain low-inductance routing for high-speed switching.
3	Collector	Output current sink; handles up to 100 mA DC; routed away from sensitive analog traces to avoid coupling via C_c.

Key Features

Feature	Design Value
Low-noise amplification	F ≤ 10 dB at 1 kHz enables use in microphone preamps and sensor signal conditioning without added noise floor degradation.
High DC current gain	h_FE = 200–450 reduces required base drive current, easing interface with microcontroller GPIO or logic buffers.
Fast switching capability	f_T = 100 MHz supports clean edge transitions in <100 ns digital logic interfaces and pulse-width modulated drivers.
Thermally robust SOT23	R_{th j-a} = 500 K/W allows sustained 100 mA operation at ambient ≤ 50 °C on standard 1 oz copper FR4 without heatsinking.

Applications

Audio Signal Amplification

Low-Voltage Switching

Use Scenario: Amplifying line-level signals from portable media players into headphone drivers or active filters.

IC Role / Device Role / Timing Role: Discrete NPN common-emitter amplifier stage providing 20–30 dB voltage gain with minimal distortion.

Use Value: Low noise (≤10 dB) and stable h_FE ensure consistent gain across production units without trimming.

Use Scenario: Enabling/disabling LED backlight or status indicators in battery-powered IoT sensors.

IC Role / Device Role / Timing Role: Low-side switch controlled by MCU GPIO, sinking up to 100 mA load current.

Use Value: V_CE(sat) ≤ 250 mV at I_C = 10 mA minimizes power loss and heat generation in compact enclosures.

Sensor Interface Buffer

Oscillator Load Driver

Use Scenario: Isolating and buffering output of thermistor or photodiode transimpedance amplifiers.

IC Role / Device Role / Timing Role: Emitter-follower buffer delivering low-output-impedance drive to ADC input or RC filter.

Use Value: High h_FE ensures minimal loading of high-Z sensor nodes while maintaining DC accuracy.

Use Scenario: Driving crystal oscillator load capacitors or sustaining oscillation in Colpitts/VCO topologies.

IC Role / Device Role / Timing Role: Active device in transistor-based LC or crystal oscillator core.

Use Value: f_T = 100 MHz and low C_c (2.5 pF) support reliable oscillation up to 10–20 MHz with low phase noise.

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
BC847B,215	Higher h_FE (200–450 same), lower V_CEO (45 V vs. 45 V), identical SOT23 package and pinout.	No functional difference; direct drop-in replacement with identical thermal and noise specs.	Select when sourcing newer Nexperia revision with extended lifecycle assurance and updated quality documentation.
MMBT3904LT1G	Same V_CEO (40 V), slightly lower h_FE (100–300), higher V_CE(sat) (300 mV @ 10 mA), same SOT23 footprint.	Marginally reduced gain consistency and higher saturation loss; acceptable where gain tolerance > ±30% is acceptable.	Choose for multi-source procurement strategy where second-source qualification is required and minor gain variation is tolerable.

Compared with BCW72,215, BC847B,215 offers identical performance and pin compatibility for seamless migration, while MMBT3904LT1G trades some h_FE consistency and saturation voltage for broader distributor availability-critical for long-term BOM resilience.

Availability

BCW72,215 is available at Aetrix Electronics and suitable for audio signal amplification, low-voltage switching, and sensor interface buffer applications requiring stable component supply across industrial and consumer electronics programs.

Supply support for BCW72,215 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

Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017, serving automotive, industrial, computing, and consumer markets with high-volume, high-reliability components.

The BCW72,215 belongs to Nexperia's legacy general-purpose transistor product line, engineered for cost-sensitive, space-constrained applications demanding predictable gain, low noise, and robust SMT manufacturability.

FAQ

Is BCW72,215 RoHS compliant and halogen-free?

Yes. BCW72,215 meets RoHS Directive 2011/65/EU and is halogen-free per Nexperia standard Q60001, confirmed in the official product change notice PCN-2018-001 and material declaration MD-2020-047. Lead finish is matte tin, and packaging complies with JEDEC J-STD-020 moisture sensitivity level 1.

What is the maximum operating temperature for continuous use?

The BCW72,215 has a maximum junction temperature (T_j) of 150 °C and an operating ambient temperature range of −65 °C to +150 °C. For continuous DC operation at full 100 mA, ambient must remain ≤50 °C on standard FR4 due to R_{th j-a} = 500 K/W and P_tot = 250 mW.

Does BCW72,215 have a PNP complement in the same package?

Yes. The BCW70 is the designated PNP complement to BCW72, sharing identical SOT23 package, pinout (1=base, 2=emitter, 3=collector), and matching voltage/current ratings (V_CEO = −45 V, I_C = −100 mA), enabling complementary pair use in Class AB output stages or differential amplifiers.

Can BCW72,215 be used in RF amplifier stages above 30 MHz?

Yes, within limits. With f_T = 100 MHz and C_c = 2.5 pF, it supports stable small-signal amplification up to ~10–15 MHz at unity gain; for higher frequencies, gain rolls off rapidly, and layout parasitics dominate-use only with careful impedance matching and neutralization if extending beyond 20 MHz.

BCW72,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 210mV @ 2.5mA, 50mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 2mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BCW72,215 FAQ

1.How can I place an order for BCW72,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCW72,215 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 BCW72,215 reliable?

The price and inventory of BCW72,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCW72,215 is usually 5 days.

3.What payment methods are accepted for BCW72,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCW72,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCW72,215?

BCW72,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCW72,215 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 BCW72,215?

For technical support, including BCW72,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCW72,215 requirements.

6.How does Aetrix verify that BCW72,215 is sourced from the original manufacturer or authorized distributors?

All BCW72,215 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 BCW72,215 meets industry standards.

7.What is the process for return or replacement of BCW72,215?

All BCW72,215 units undergo pre-shipment inspection (PSI). If there is an issue with BCW72,215, 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 BCW72,215 part is unused and in its original packaging.

Return procedure for BCW72,215:

1.Submit a request within 90 days.

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

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