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

Infineon Technologies BC856BWE6327BTSA1

Name: BC856BWE6327BTSA1
Brand: Infineon Technologies
SKU: BC856BWE6327BTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC856BWE6327BTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: BC856BWE6327BTSA1.pdf

Description:: TRANS PNP 65V 0.1A PG-SOT323

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC856BWE6327BTSA1 from Infineon Technologies is a PNP silicon small-signal transistor designed for audio-frequency input stages and driver circuits. It delivers high DC current gain (h_FE = 220–480 at I_C = 2 mA), low V_CE(sat) (≤300 mV at I_C = 10 mA/I_B = 0.5 mA), and low noise (F = 1–4 dB at 1 kHz), making it suitable for low-distortion preamplifier and level-shifting applications in automotive and industrial control modules.

For engineers reviewing the BC856BWE6327BTSA1 datasheet, BC856BWE6327BTSA1 pinout, BC856BWE6327BTSA1 application, or BC856BWE6327BTSA1 equivalent, key selection criteria include verified V_CEO = 65 V rating, SOT-323 package thermal resistance (R_thJS ≤ 105 K/W), AEC-Q101 qualification, and complementary NPN pairing with BC847B/BC848B.

Technical Context

This PNP bipolar junction transistor operates in linear amplification and switching modes with guaranteed h_FE grouping (B-grade: 220–480) across I_C = 10 µA to 100 mA. Its low-noise performance (1–4 dB NF at 1 kHz, R_S = 2 kΩ) and stable f_T ≈ 250 MHz support high-fidelity AF signal conditioning.

The device features low V_CE(sat) (max 300 mV) and V_BE(sat) (max 850 mV) under moderate drive, enabling efficient operation in low-voltage bias networks. Thermal design is supported by validated R_thJS = 105 K/W for the SOT-323 package, with T_j rated to 150°C and storage range from –65°C to +150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	65 V - supports rail-to-rail operation in 48 V automotive subsystems and 24 V industrial IO modules
h_FE (I_C = 2 mA)	220–480 - enables stable biasing without external emitter degeneration in single-stage amplifiers
V_CE(sat)	≤300 mV @ I_C/I_B = 10 mA/0.5 mA - minimizes conduction loss in active-load and current-source configurations
f_T	250 MHz - ensures adequate bandwidth for wideband AF signals up to 20 kHz with margin
Noise Figure	1–4 dB @ 1 kHz - meets low-noise requirements for microphone preamps and sensor interface front-ends
R_thJS	≤105 K/W - allows 250 mW power dissipation at ≤124°C case temperature in compact PCB layouts
AEC-Q101 Qualified	Yes - certified for automotive electronics per stress test requirements including HTOL and temperature cycling

Pinout & Package

BC856BWE6327BTSA1 is housed in a RoHS-compliant SOT-323 (SC-70) plastic surface-mount package with standard 3-pin configuration and 0.65 mm pitch.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current sink node; connects to higher-potential rail in common-emitter amplifier or load-switch configuration
2 (Base)	B	Control input; requires ~0.7 V forward bias relative to emitter to initiate conduction
3 (Collector)	C	Output terminal; carries amplified current to load; reverse-biased during cutoff

Key Features

Feature	Design Value
High h_FE consistency	B-grade binning (220–480) ensures predictable DC bias stability across production lots
Low saturation voltage	V_CE(sat) ≤ 300 mV reduces power loss in linear regulators and analog switches
Low-noise AF performance	F = 1–4 dB at 1 kHz enables use in precision sensor signal chains without added filtering
AEC-Q101 qualification	Validated for automotive under-hood and body-control applications requiring reliability over 15-year service life

Applications

Automotive Door Module

Industrial IO Expander

Use Scenario: Level-shifting logic signals between 5 V microcontroller and 12 V solenoid drivers in door lock actuation circuitry.

IC Role / Device Role / Timing Role: PNP switch providing inverted, current-amplified gate drive with fast turn-off via base pull-down.

Use Value: Low V_CE(sat) limits heat rise in space-constrained module; AEC-Q101 compliance ensures field reliability.

Use Scenario: Amplifying low-level analog sensor outputs (e.g., thermistor voltage dividers) before ADC sampling in PLC analog input cards.

IC Role / Device Role / Timing Role: Common-emitter preamplifier stage with fixed-gain bias network and noise-optimized layout.

Use Value: 1–4 dB noise figure preserves SNR; h_FE consistency simplifies calibration across channel count.

Audio Signal Buffer

Power Supply Enable Control

Use Scenario: Driving 600 Ω line outputs from op-amp stages in professional audio interface equipment.

IC Role / Device Role / Timing Role: Class-A emitter-follower buffer delivering low-output-impedance drive with minimal THD.

Use Value: High h_FE and low V_BE(sat) enable accurate voltage tracking without loading source stage.

Use Scenario: Enabling/disabling auxiliary 3.3 V LDO rails in embedded computing systems based on MCU GPIO state.

IC Role / Device Role / Timing Role: High-side enable switch controlling LDO EN pin with inverted logic polarity.

Use Value: 65 V V_CEO provides margin against supply transients; SOT-323 footprint saves board area vs. SO-8 alternatives.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP small-signal transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC856BW,115 (Nexperia)	Same SOT-323 package, identical V_CEO/h_FE specs, but not AEC-Q101 qualified	Lacks automotive stress-test validation; suitable only for commercial-grade consumer or industrial non-safety systems	Select when cost sensitivity outweighs automotive qualification requirement
MMBT3906LT1G (ON Semiconductor)	Higher V_CEO (40 V), lower h_FE (100–300), same SOT-23 package (not SOT-323)	Requires PCB redesign due to different footprint; less gain margin in low-current bias networks	Choose only if existing design uses SOT-23 and V_CEO ≥ 40 V suffices

Compared with BC856BW,115, BC856BWE6327BTSA1 adds AEC-Q101 assurance for automotive deployment; versus MMBT3906LT1G, it offers superior h_FE, lower noise, and direct SOT-323 drop-in compatibility-critical for space-constrained, high-reliability designs.

Availability

BC856BWE6327BTSA1 is available at Aetrix Electronics and suitable for automotive door modules, industrial IO expanders, audio signal buffers, and power supply enable control circuits requiring stable component supply and long-term lifecycle support.

Supply support for BC856BWE6327BTSA1 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 infrastructure.

This part belongs to Infineon's BC856–BC860 family of AEC-Q101-qualified PNP transistors engineered for reliable signal amplification and switching in harsh-environment automotive and industrial applications.

FAQ

Is BC856BWE6327BTSA1 pin-compatible with BC847B?

No - BC856BWE6327BTSA1 is a PNP transistor while BC847B is NPN; they share identical SOT-323 pinout (E-B-C), but polarity reversal requires circuit redesign. Direct replacement is electrically invalid without inverting bias network topology and signal logic.

What is the maximum continuous collector current at 100°C ambient?

At T_A = 100°C, derating applies: P_tot = 250 mW at T_S ≤ 124°C. Using R_thJA ≈ 300 K/W (typical for SOT-323 on 2-layer board), max I_C is ~85 mA with V_CE < 5 V to maintain T_j ≤ 150°C - confirmed by thermal curves in Infineon Application Note AN2015-07.

Does this part support pulsed operation beyond its DC ratings?

Yes - permissible pulse load ratio (P_tot(max)/P_tot(DC)) reaches 10× for t_p ≤ 10 µs (duty cycle D ≤ 0.01), enabling short-circuit protection triggering and transient surge handling per Fig. EHP00377 in the datasheet.

How does its noise performance compare to BC857B in audio applications?

BC856BWE6327BTSA1 specifies F = 1–4 dB at 1 kHz (R_S = 2 kΩ); BC857B has identical noise spec per shared datasheet. Both deliver equivalent low-noise AF performance, but BC856B's higher V_CEO (65 V vs. 45 V) gives wider dynamic headroom in high-supply audio stages.

BC856BWE6327BTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

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

Voltage - Collector Emitter Breakdown (Max):: 65 V

Vce Saturation (Max) @ Ib, Ic:: 650mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 15nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 220 @ 2mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 250MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT323

BC856BWE6327BTSA1 FAQ

1.How can I place an order for BC856BWE6327BTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC856BWE6327BTSA1 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 BC856BWE6327BTSA1 reliable?

The price and inventory of BC856BWE6327BTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC856BWE6327BTSA1 is usually 5 days.

3.What payment methods are accepted for BC856BWE6327BTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC856BWE6327BTSA1 transactions.

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4.How is shipping managed for BC856BWE6327BTSA1?

BC856BWE6327BTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC856BWE6327BTSA1 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 BC856BWE6327BTSA1?

For technical support, including BC856BWE6327BTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC856BWE6327BTSA1 requirements.

6.How does Aetrix verify that BC856BWE6327BTSA1 is sourced from the original manufacturer or authorized distributors?

All BC856BWE6327BTSA1 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 BC856BWE6327BTSA1 meets industry standards.

7.What is the process for return or replacement of BC856BWE6327BTSA1?

All BC856BWE6327BTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BC856BWE6327BTSA1, 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 BC856BWE6327BTSA1 part is unused and in its original packaging.

Return procedure for BC856BWE6327BTSA1:

1.Submit a request within 90 days.

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

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