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

Nexperia USA Inc. BCW60B,235

Name: BCW60B,235
Brand: Nexperia USA Inc.
SKU: BCW60B,235
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCW60B,235

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCW60B,235.pdf

Description:: TRANS NPN 32V 0.1A TO-236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCW60B,235 from NXP Semiconductors is an NPN general-purpose bipolar junction transistor in SOT23 package, rated for 32 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 20–310 at I_C = 10 µA and 180–310 at I_C = 2 mA. It serves as a low-power switching and small-signal amplification device in consumer audio preamps, LED driver bias stages, and logic-level interface circuits.

For engineers reviewing the BCW60B,235 datasheet, BCW60B,235 pinout, BCW60B,235 application, or BCW60B,235 equivalent, key selection criteria include its SOT23 footprint compatibility, guaranteed h_FE range across operating currents, V_CE(sat) ≤ 350 mV at 10 mA/0.25 mA drive, thermal resistance of 500 K/W on FR4, and complementary PNP pairing with BCW61B.

Technical Context

The BCW60B,235 operates as a silicon planar epitaxial NPN transistor optimized for linear and switching operation in ambient temperatures from −65 °C to +150 °C. Its structure supports low-noise amplification (F = 2–6 dB at 1 kHz) and stable DC gain across collector currents from 10 µA to 50 mA, with transition frequency f_T ≥ 100 MHz under 10 mA/5 V conditions.

It features low parasitic capacitance (C_c = 1.7 pF, C_e = 11 pF), enabling use in RF-coupled preamplifier stages up to ~100 MHz. Saturation behavior is characterized at two drive levels: V_CE(sat) = 50–350 mV (I_C = 10 mA, I_B = 0.25 mA) and 100–550 mV (I_C = 50 mA, I_B = 1.25 mA), supporting predictable turn-on in digital logic interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	32 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in low-voltage switching rails.
I_C (DC)	100 mA - Continuous collector current rating; sets maximum load drive capability in relay drivers or LED bias networks.
h_FE (I_C = 2 mA)	180–310 - Confirmed DC current gain range at mid-range bias; enables predictable base resistor sizing in amplifier bias networks.
V_CE(sat) (10 mA/0.25 mA)	50–350 mV - Verified saturation voltage window; ensures <350 mV drop in active-low switch applications at light loads.
f_T	≥100 MHz - Minimum transition frequency at 10 mA/5 V; supports small-signal amplification up to HF band edge.
R_{th j-a}	500 K/W - Thermal resistance on FR4 PCB; determines junction temperature rise of ~125 °C at full 250 mW dissipation.
C_c	1.7 pF - Collector-base capacitance at 10 V; limits high-frequency feedback in common-emitter gain stages.

Pinout & Package

SOT23 plastic surface-mounted package (TO-236AB), 3-lead, dimensions per JEDEC outline: 2.9 × 1.3 × 1.0 mm (L × W × H), with gull-wing leads and 0.95 mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biased junction; requires current-limited drive (I_B ≤ 200 mA peak) to avoid damage.
2	Emitter	Current return path; internally connected to substrate; must be tied to lowest potential in common-emitter configuration.
3	Collector	Main output terminal; carries full load current; electrically isolated from package tab (no thermal pad).

Key Features

Feature	Design Value
Guaranteed h_FE spread per grade	BCW60B: 20–310 at I_C = 2 mA - Enables consistent gain binning without post-manufacture sorting.
Low V_CE(sat) at light drive	≤350 mV @ 10 mA/0.25 mA - Reduces conduction loss in battery-powered signal switches and level translators.
High f_T with low C_c	f_T ≥ 100 MHz, C_c = 1.7 pF - Supports stable small-signal gain up to 30 MHz with minimal neutralization.
Wide operating temperature	−65 °C to +150 °C - Validated for industrial control modules and automotive under-hood sensor interfaces.
Complementary PNP pairing	BCW61B available - Enables matched push-pull output stages and differential pair designs without cross-manufacturer sourcing.

Applications

Audio Preamp Stage

LED Bias Control

Use Scenario: Low-noise voltage amplification of microphone or line-level signals in portable audio devices.

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

Use Value: 2–6 dB noise figure and h_FE ≥ 180 ensure SNR > 65 dB at 1 kHz with minimal component count.

Use Scenario: Constant-current biasing of indicator LEDs in microcontroller I/O expansion boards.

IC Role / Device Role / Timing Role: Switched current source with base driven by GPIO pin through current-limiting resistor.

Use Value: V_CE(sat) ≤ 350 mV at 10 mA guarantees > 2.8 V forward voltage margin for red/green LEDs at 3.3 V supply.

Logic-Level Translator

Relay Driver Interface

Use Scenario: Level-shifting between 1.8 V FPGA I/O and 5 V peripheral enable lines.

IC Role / Device Role / Timing Role: Common-emitter inverter with pull-up to 5 V rail and base driven by low-voltage logic.

Use Value: Guaranteed h_FE ≥ 20 at I_C = 10 µA ensures reliable saturation with 10 kΩ base resistor at 1.8 V.

Use Scenario: Driving 12 V/40 mA coil of miniature signal relay from MCU GPIO.

IC Role / Device Role / Timing Role: Saturated switch with base current set to 1/10th of coil current for robust turn-on.

Use Value: I_C = 100 mA rating and V_CE(sat) ≤ 550 mV at 50 mA/1.25 mA prevent thermal runaway during continuous duty.

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
BC846B,215	Same SOT23 package; h_FE = 200–450 at I_C = 10 mA (wider gain band, higher test current)	Higher gain at medium currents improves bias stability in amplifier feedback loops	Select when tighter h_FE tolerance at 10 mA is required over ultra-low-current gain consistency
MMBT3904LT1G	h_FE = 100–300 at I_C = 10 mA; R_{th j-a} = 400 K/W (lower thermal resistance)	Better power handling at elevated ambient due to improved thermal path on FR4	Select for continuous 50 mA operation above 70 °C ambient where BCW60B,235 approaches thermal limit

Compared with BCW60B,235, BC846B,215 offers higher and more tightly specified gain at practical bias points but less guaranteed performance below 100 µA, while MMBT3904LT1G delivers superior thermal performance at cost of slightly lower minimum h_FE at microamp bias.

Availability

BCW60B,235 is available at Aetrix Electronics and suitable for audio preamp stages, LED bias control, logic-level translators, and relay driver interfaces requiring stable component supply and long-term obsolescence management.

Supply support for BCW60B,235 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The BCW60 series belongs to NXP's legacy discrete transistor portfolio, designed specifically for cost-sensitive, space-constrained general-purpose analog and digital switching applications in consumer and industrial electronics.

FAQ

Is BCW60B,235 RoHS compliant?

Yes, BCW60B,235 is RoHS compliant per EU Directive 2011/65/EU. NXP confirmed compliance in product change notices issued after 2006, and all units supplied by Aetrix Electronics carry lead-free matte tin terminations and halogen-free molding compound.

What is the maximum allowable PCB trace width for SOT23 pads when routing BCW60B,235?

Per NXP SOT23 layout guidelines, minimum recommended pad width is 0.45 mm with 0.95 mm center-to-center spacing. Trace width should be ≥ 0.25 mm for signal paths and ≥ 0.4 mm for collector/emitter power traces to maintain thermal resistance within 500 K/W on 1-oz FR4.

Can BCW60B,235 replace BCW60C in existing designs?

No direct substitution is recommended without circuit validation. BCW60C has minimum h_FE = 40 at I_C = 10 µA and 250 at I_C = 2 mA-significantly higher than BCW60B's 20 and 180. Base resistor values may require reduction by up to 40% to maintain saturation in switching applications.

Does BCW60B,235 support reflow soldering per J-STD-020?

Yes, BCW60B,235 is qualified for lead-free reflow per J-STD-020D. Peak temperature is 260 °C for ≤ 30 seconds, with ramp rate ≤ 3 °C/s. Moisture sensitivity level is MSL1-unlimited floor life at ≤ 30 °C/60% RH when sealed in dry pack.

BCW60B,235 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):: 32 V

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

Current - Collector Cutoff (Max):: 20nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 180 @ 2mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 250MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BCW60B,235 FAQ

1.How can I place an order for BCW60B,235 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCW60B,235 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 BCW60B,235 reliable?

The price and inventory of BCW60B,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCW60B,235 is usually 5 days.

3.What payment methods are accepted for BCW60B,235?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCW60B,235 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCW60B,235?

BCW60B,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCW60B,235 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 BCW60B,235?

For technical support, including BCW60B,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCW60B,235 requirements.

6.How does Aetrix verify that BCW60B,235 is sourced from the original manufacturer or authorized distributors?

All BCW60B,235 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 BCW60B,235 meets industry standards.

7.What is the process for return or replacement of BCW60B,235?

All BCW60B,235 units undergo pre-shipment inspection (PSI). If there is an issue with BCW60B,235, 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 BCW60B,235 part is unused and in its original packaging.

Return procedure for BCW60B,235:

1.Submit a request within 90 days.

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

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