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

Infineon Technologies BCX70GE6327HTSA1

Name: BCX70GE6327HTSA1
Brand: Infineon Technologies
SKU: BCX70GE6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX70GE6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

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

Datasheet:: BCX70GE6327HTSA1.pdf

Description:: TRANS NPN 45V 0.1A PG-SOT23

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX70GE6327HTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor (BJT) designed for audio-frequency input stages and driver circuits. It delivers high DC current gain (h_FE = 250–500 at I_C = 2 mA), low V_CE(sat) (0.12 V typical at I_C = 10 mA), and low noise (2 dB typical at 1 kHz, 200 Hz bandwidth), making it suitable for low-distortion preamplifier and line-driver applications in automotive and industrial signal conditioning.

For engineers reviewing the BCX70GE6327HTSA1 datasheet, BCX70GE6327HTSA1 pinout, BCX70GE6327HTSA1 application, or BCX70GE6327HTSA1 equivalent, key selection criteria include its SOT-23 package compatibility, AEC-Q101 qualification for automotive use, guaranteed h_FE group G performance, and validated low-noise behavior below 15 kHz - critical for analog front-end design and sensor interface buffering.

Technical Context

This transistor operates as a linear amplifying device with fixed-emitter biasing topology, optimized for stable small-signal gain across temperature (−50 °C to +150 °C). Its h_FE group G guarantees minimum DC current gain of 250 at I_C = 2 mA and V_CE = 5 V, and its f_T of 250 MHz supports wideband stability in feedback-corrected amplifier designs.

The device features low C_cb (0.95 pF) and C_eb (9 pF), enabling predictable high-frequency roll-off and minimal Miller effect in common-emitter configurations. Its V_(BR)CEO = 45 V and V_(BR)CBO = 45 V support operation in 24 V automotive supply rails with margin, while R_thJS ≤ 240 K/W ensures thermal reliability under pulsed load conditions per JEDEC JESD22-A108.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Supports 24 V system rails with ≥85 % voltage margin against transients
h_FE (I_C = 2 mA)	250–500 - Enables precise biasing with minimal base drive current variation
V_CE(sat) (I_C = 10 mA)	0.12 V typ - Reduces power loss and self-heating in linear driver stages
f_T	250 MHz - Ensures stable unity-gain bandwidth for audio-band feedback compensation
Noise Figure	2 dB @ 1 kHz - Meets low-noise requirements for microphone preamps and sensor signal chains
P_tot (T_S ≤ 71 °C)	330 mW - Allows continuous operation in compact SOT-23 PCB layouts without forced cooling
C_cb	0.95 pF - Limits high-frequency instability in common-emitter gain stages

Pinout & Package

BCX70GE6327HTSA1 is housed in a RoHS-compliant SOT-23 plastic surface-mount package with standard lead frame geometry and Pb-free terminations. The package measures 2.9 mm × 1.3 mm × 1.0 mm and supports reflow soldering per IPC/JEDEC J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to ground or low-impedance return path; defines reference for V_BE biasing
2 (Base)	Control input	Receives current-limited drive; requires series resistor to limit I_B ≤ 200 µA max
3 (Collector)	Output current source	Drives load to positive rail; must be decoupled when used in RF-sensitive circuits

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM ≥ 2 kV
Low V_CE(sat)	0.12 V typical at I_C = 10 mA enables <1.2 mW dissipation in emitter-follower buffer stages
Group G h_FE	Guaranteed 250–500 range reduces need for binning or trim resistors in production assemblies
Low-noise design	2 dB noise figure at 1 kHz allows direct coupling to electret microphones without added op-amp stage
High f_T	250 MHz transition frequency supports stable closed-loop gain up to 100 kHz with phase margin >45°

Applications

Audio Preamplifier Stage

Automotive Door Module Driver

Use Scenario: Amplifying weak signals from analog MEMS microphones before ADC sampling in infotainment head units.

IC Role / Device Role / Timing Role: Low-noise NPN BJT configured as common-emitter amplifier with emitter degeneration.

Use Value: 2 dB noise figure and 250–500 h_FE enable ≥65 dB SNR without additional gain stages or trimming.

Use Scenario: Driving window lift motor control logic in body control modules with 12 V battery supply.

IC Role / Device Role / Timing Role: Linear current amplifier interfacing MCU GPIO to MOSFET gate driver input.

Use Value: 0.12 V V_CE(sat) minimizes voltage drop and heat generation during sustained 50 mA base drive.

Industrial Sensor Signal Conditioning

Power Supply Feedback Transistor

Use Scenario: Buffering thermistor or RTD bridge outputs in programmable logic controller analog input cards.

IC Role / Device Role / Timing Role: Emitter-follower configured for high-input impedance and low-output impedance signal isolation.

Use Value: 9 pF C_eb and 0.95 pF C_cb prevent capacitive loading-induced drift in precision 20-bit ADC front ends.

Use Scenario: Providing isolated current sensing feedback to PWM controllers in 24 V DC-DC converters.

IC Role / Device Role / Timing Role: Common-collector configured transistor delivering proportional current to optocoupler LED.

Use Value: AEC-Q101 qualification ensures reliability in harsh thermal cycling environments over 15-year service life.

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
BC847BG,115	Lower V_CEO (45 V same), but h_FE group B (110–220) - 40 % lower min gain than BCX70G	Not recommended for low-base-drive designs requiring h_FE ≥ 250	Select only if cost sensitivity outweighs gain consistency needs
MMBT3904LT1G	Same V_CEO, but higher V_CE(sat) (0.2 V typ) and no AEC-Q101 qualification	Excludes automotive under-hood use due to unqualified reliability testing	Acceptable for consumer-grade audio buffers where qualification is not required

Compared with BC847BG and MMBT3904LT1G, BCX70GE6327HTSA1 provides superior h_FE consistency, lower saturation voltage, and automotive-grade qualification - making it the preferred choice for safety-critical or thermally constrained linear amplifier roles.

Availability

BCX70GE6327HTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and audio preamplifier circuits requiring stable component supply and long-term lifecycle assurance.

Supply support for BCX70GE6327HTSA1 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 is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949.

BCX70GE6327HTSA1 belongs to Infineon's BCX70 family of AEC-Q101-qualified general-purpose NPN transistors, engineered specifically for reliable linear amplification and driver functions in automotive and industrial analog signal paths.

FAQ

Is BCX70GE6327HTSA1 pin-compatible with BCW60 series transistors?

Yes - BCX70GE6327HTSA1 uses identical SOT-23 pinout (Emitter-Base-Collector on pins 1-2-3) and shares mechanical footprint and soldering profile with BCW60B/C/D/FF variants. However, BCX70G offers higher V_CEO (45 V vs. 32 V) and guaranteed h_FE group G, enabling direct replacement only where voltage margin and gain consistency are verified.

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current is 200 µA per datasheet Section 2. Exceeding this risks permanent h_FE degradation. For continuous DC operation, design base current to remain ≤100 µA with 2× derating margin, especially above 85 °C ambient, to maintain specified gain and thermal stability.

Does BCX70GE6327HTSA1 support pulsed operation beyond its DC power rating?

Yes - the device supports pulsed loads up to P_tot(max)/P_tot(DC) = 5 for pulse widths ≤100 µs (duty cycle ≤5 %), as shown in Figure 8 of the datasheet. This enables short-duration surge current handling in motor commutation or relay drive applications without exceeding junction temperature limits.

Can BCX70GE6327HTSA1 be used in RF amplifier stages?

No - although f_T = 250 MHz suggests RF capability, the device lacks optimized layout, controlled parasitics, and RF-specific characterization. Its C_cb and C_eb values are not tuned for impedance matching, and noise performance degrades above 100 kHz. It is intended strictly for AF and low-speed switching applications up to 15 kHz.

BCX70GE6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Last Time Buy

Transistor Type:: NPN

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

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

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

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 120 @ 2mA, 5V

Power - Max:: 330 mW

Frequency - Transition:: 250MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

BCX70GE6327HTSA1 FAQ

1.How can I place an order for BCX70GE6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX70GE6327HTSA1 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 BCX70GE6327HTSA1 reliable?

The price and inventory of BCX70GE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX70GE6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BCX70GE6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX70GE6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX70GE6327HTSA1?

BCX70GE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX70GE6327HTSA1 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 BCX70GE6327HTSA1?

For technical support, including BCX70GE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX70GE6327HTSA1 requirements.

6.How does Aetrix verify that BCX70GE6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BCX70GE6327HTSA1 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 BCX70GE6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BCX70GE6327HTSA1?

All BCX70GE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX70GE6327HTSA1, 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 BCX70GE6327HTSA1 part is unused and in its original packaging.

Return procedure for BCX70GE6327HTSA1:

1.Submit a request within 90 days.

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

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