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

Infineon Technologies BCW67C

Name: BCW67C
Brand: Infineon Technologies
SKU: BCW67C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCW67C

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

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

Datasheet:: BCW67C.pdf

Description:: TRANS 32V 0.8A PG-SOT23-3-1

Quantity:: RFQ Add To RFQ list

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Inventory:171,000

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Product details

Overview

BCW67C from Infineon Technologies is a PNP silicon general-purpose audio-frequency bipolar junction transistor in SOT23 package, rated for V_CEO = 32 V, I_C = 800 mA, and P_tot = 330 mW at T_S ≤ 79°C, with h_FE = 80–180 (at I_C = 100 µA, V_CE = 10 V) and V_CE(sat) ≤ 0.7 V (I_C = 500 mA, I_B = 50 mA), used in low-voltage switching and amplification stages of automotive body control modules.

For engineers reviewing the BCW67C datasheet, BCW67C pinout, BCW67C application, or BCW67C equivalent, key selection criteria include guaranteed h_FE group C performance across temperature, low V_CE(sat) at high current, RoHS-compliant SOT23 packaging, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

The BCW67C operates as a medium-power PNP BJT optimized for linear and saturated switching in DC-coupled AF signal paths and load-switching circuits. Its design emphasizes stable DC current gain across I_C = 100 µA to 500 mA and low saturation voltage under high base drive.

It features complementary NPN pairing with BCW66 series, supports operation up to T_j = 150°C, and exhibits C_cb = 6 pF and f_T = 200 MHz - enabling use in low-noise preamplifier stages and fast-switching driver nodes where bandwidth and thermal robustness are jointly constrained.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	32 V - maximum collector-emitter voltage before breakdown in common-emitter configuration
I_C	800 mA - continuous collector current rating at T_S ≤ 79°C
h_FE (Group C)	80–180 - guaranteed DC current gain range at I_C = 100 µA, V_CE = 10 V
V_CE(sat)	≤ 0.7 V - collector-emitter saturation voltage at I_C = 500 mA, I_B = 50 mA
f_T	200 MHz - transition frequency at I_C = 50 mA, V_CE = 5 V, indicating usable bandwidth for AF and low-MHz switching
R_thJS	≤ 215 K/W - thermal resistance from junction to soldering point, defining heat dissipation limit in PCB-mounted SOT23

Pinout & Package

BCW67C is housed in a standard SOT23 plastic surface-mount package with gull-wing leads. Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector - verified per Infineon's official marking layout and pin configuration table.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Current-controlled input terminal	Receives base drive to regulate collector current; requires external current-limiting resistor in most switch applications
2 (Emitter)	Common reference node in common-emitter configuration	Connected to ground or supply rail depending on circuit topology; carries full emitter current (I_E ≈ I_C + I_B)
3 (Collector)	Output current terminal	Sinks load current when biased in active/saturation; polarity defines PNP sourcing behavior relative to emitter

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics per stress-test requirements including HTOL, TC, and HTRB
RoHS-compliant packaging	Pb-free SOT23 construction meeting EU Directive 2011/65/EU without exemptions
High h_FE group C grading	Guaranteed 80–180 h_FE at low I_C, enabling stable biasing in discrete amplifier stages
Low V_CE(sat) at high current	≤ 0.7 V at I_C = 500 mA ensures <100 mW conduction loss in switching applications

Applications

Automotive Door Module Switching

Industrial Sensor Signal Conditioning

Use Scenario: Driving small solenoids and LED indicators in door latch and window control units.

IC Role / Device Role / Timing Role: PNP switch controlling 12 V loads with microcontroller GPIO-level base drive.

Use Value: Low V_CE(sat) minimizes power loss and self-heating during sustained activation; AEC-Q101 ensures field reliability over 15-year vehicle lifecycle.

Use Scenario: Amplifying millivolt-level bridge outputs from pressure transducers in HVAC controllers.

IC Role / Device Role / Timing Role: Discrete low-noise preamplifier stage with DC-coupled bias network.

Use Value: Stable h_FE group C enables predictable gain setting; f_T = 200 MHz supports wideband response up to 10 kHz without phase shift.

Consumer Audio Input Stage

Power Supply Enable Control

Use Scenario: First-stage amplification of line-level analog audio signals in portable speakers.

IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with fixed emitter degeneration.

Use Value: Low C_cb = 6 pF reduces Miller effect; high h_FE allows high input impedance with minimal base current draw.

Use Scenario: Enabling/disabling 5 V auxiliary rails in embedded computing power trees.

IC Role / Device Role / Timing Role: High-side PNP pass transistor controlled by logic-level enable signal.

Use Value: Guaranteed V_CEO = 32 V provides margin above 5 V rail; SOT23 footprint enables compact board layout near regulators.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC857C	Same SOT23 package, h_FE = 110–220 (I_C = 10 mA), V_CEO = 45 V, but not AEC-Q101 qualified	Higher voltage rating suits 24 V industrial systems; lacks automotive qualification	Select when AEC-Q101 is not required and higher V_CEO margin is prioritized
MMBT3906	Same SOT23, h_FE = 100–300 (I_C = 10 mA), V_CEO = 40 V, RoHS-compliant but no AEC-Q101 documentation	Broader h_FE spread increases design margin needs; widely available but unqualified for automotive	Prefer for cost-sensitive consumer designs where qualification is not mandated

Compared with BC857C and MMBT3906, BCW67C delivers guaranteed AEC-Q101 compliance and tighter h_FE grouping (C grade) at lower V_CEO, making it the only choice for production automotive modules requiring traceable qualification evidence and consistent gain behavior across temperature.

Availability

BCW67C is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer audio front-ends, and power rail enable circuits requiring stable component supply and long-term manufacturability.

Supply support for BCW67C 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and discrete devices, with global R&D and manufacturing infrastructure.

The BCW67C belongs to Infineon's legacy bipolar transistor product line designed specifically for AEC-Q101-compliant automotive signal switching and amplification, emphasizing reliability, thermal stability, and process-controlled h_FE binning.

FAQ

What is the maximum operating temperature for BCW67C?

The BCW67C has a maximum junction temperature (T_j) of 150°C and a storage temperature range of –65°C to +150°C. Its thermal resistance R_thJS is ≤215 K/W, meaning safe operation at full 800 mA current requires careful PCB copper area design and ambient temperature control below 79°C at the soldering point.

Is BCW67C pin-compatible with BCW66 series?

No - BCW67C is a PNP transistor while BCW66 series are complementary NPN types. They share identical SOT23 package and pinout (B-E-C), but polarity reversal means direct substitution would invert circuit function unless topology is redesigned to accommodate emitter/collector swap and bias reversal.

Does BCW67C support pulsed operation beyond its DC ratings?

Yes - BCW67C supports peak collector current I_CM = 1 A for pulse widths ≤10 ms (duty cycle ≤2%). Per the permissible pulse load curve, P_tot(max)/P_tot(DC) reaches 5× at t_p = 100 µs, enabling short-duration surge handling in motor commutation or relay driving without thermal runaway.

How does h_FE group C differ from groups A and B in BCW67 variants?

BCW67C guarantees h_FE = 80–180 at I_C = 100 µA and V_CE = 10 V, whereas BCW67A is 35–75 and BCW67B is 50–120. Group C offers highest minimum gain, reducing base drive sensitivity and improving consistency in low-current bias networks used in precision analog stages.

BCW67C Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Bulk

Product Status:: Active

Transistor Type:: -

Current - Collector (Ic) (Max):: 800 mA

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

Vce Saturation (Max) @ Ib, Ic:: 700mV @ 50mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 100mA, 1V

Power - Max:: 330 mW

Frequency - Transition:: 200MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23-3-1

BCW67C FAQ

1.How can I place an order for BCW67C through Aetrix?

Please submit a Request for Quotation (RFQ) for BCW67C 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 BCW67C reliable?

The price and inventory of BCW67C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCW67C is usually 5 days.

3.What payment methods are accepted for BCW67C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCW67C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCW67C?

BCW67C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCW67C 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 BCW67C?

For technical support, including BCW67C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCW67C requirements.

6.How does Aetrix verify that BCW67C is sourced from the original manufacturer or authorized distributors?

All BCW67C 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 BCW67C meets industry standards.

7.What is the process for return or replacement of BCW67C?

All BCW67C units undergo pre-shipment inspection (PSI). If there is an issue with BCW67C, 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 BCW67C part is unused and in its original packaging.

Return procedure for BCW67C:

1.Submit a request within 90 days.

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

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