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Infineon Technologies BC 856B E6433
- Part No.:
- BC 856B E6433
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC 856B E6433.pdf
- Description:
- TRANS PNP 65V 0.1A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,856
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Product details
Overview
BC856B E6433 from Nexperia is a PNP silicon small-signal transistor designed for audio-frequency input stages and driver circuits. It delivers high DC current gain (hFE = 220–480 at IC = 2 mA), low VCE(sat) (max 250 mV at IC = 10 mA/IB = 0.5 mA), and low noise (1 dB typical at 1 kHz, 200 Hz bandwidth) - enabling clean amplification in battery-powered audio preamps and level-shifting interfaces.
For engineers reviewing the BC856B E6433 datasheet, BC856B E6433 pinout, BC856B E6433 application, or BC856B E6433 equivalent, key selection criteria include its AEC-Q101 qualification for automotive use, SOT23 package compatibility with high-density PCB layouts, RoHS-compliant lead-free construction, and complementary pairing with BC846–BC850 NPN series in push-pull configurations.
Technical Context
This PNP transistor operates in linear and switching modes with VCEO = 65 V and IC = 100 mA continuous rating. Its hFE grouping (B-grade) ensures consistent current amplification across production lots, while fT = 250 MHz supports stable operation up to mid-VHF frequencies in oscillator and RF detector front-ends.
Thermal performance is defined by RthJS ≤ 240 K/W (SOT23), enabling reliable operation at Tj ≤ 150 °C. The device's low Ccb (1.5 pF typ) and Ceb (8 pF typ) minimize Miller effect distortion in high-gain amplifier stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Supports rail voltages up to ±30 V in dual-supply audio stages without breakdown. |
| hFE (IC = 2 mA) | 220–480 - Enables precise biasing and predictable gain in discrete amplifier topologies. |
| VCE(sat) | 250 mV max - Reduces conduction loss and self-heating in active-load and switch-mode driver applications. |
| fT | 250 MHz - Ensures stable small-signal amplification beyond audio band into IF stages of AM/FM receivers. |
| Noise Figure | 1 dB typical - Critical for low-noise preamplifier inputs where signal integrity dominates SNR budget. |
| RthJS | ≤240 K/W - Allows thermal design margin for 330 mW dissipation at board-level soldering point temperature ≤71 °C. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics including body control modules and sensor interface circuits. |
Pinout & Package
BC856B E6433 is housed in a standard SOT23 plastic surface-mount package (3-pin, 1.3 mm × 2.9 mm × 1.0 mm), optimized for automated placement and reflow soldering on high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current source terminal | Connected to higher potential rail in common-emitter or common-base configurations; defines polarity and current direction. |
| 2 (Base) | Control input | Receives bias current to regulate collector-emitter conduction; requires external resistor network for stable DC operating point. |
| 3 (Collector) | Output current sink | Drains load current to ground or negative rail; voltage swing limited by VCEO and thermal derating. |
Key Features
| Feature | Design Value |
|---|---|
| High hFE consistency | B-grade binning (220–480) enables matched-pair designs and predictable gain staging without individual trimming. |
| Low VCE(sat) | 250 mV max at IC/IB = 20 ensures minimal voltage drop in saturated-switch applications like LED drivers and logic-level translators. |
| Low-noise operation | 1 dB NF at 1 kHz allows direct coupling into microphone preamp inputs without degrading system SNR. |
| AEC-Q101 qualification | Validated for automotive underhood environments (−40 °C to +150 °C junction), supporting functional safety-critical signal conditioning. |
| Pb-free & RoHS compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-609A Class 3 moisture sensitivity, simplifying global manufacturing compliance. |
Applications
| Automotive Door Module Interface | Portable Audio Preamp Stage |
|---|---|
Use Scenario: Signal conditioning for capacitive touch sensors and window motor feedback in door control units. IC Role / Device Role / Timing Role: PNP emitter-follower buffer isolating MCU GPIO from noisy 12 V loads while preserving analog sensor voltage levels. Use Value: Low VCE(sat) minimizes power loss during sustained actuation; AEC-Q101 ensures reliability over 15-year vehicle lifecycle. | Use Scenario: First-stage amplification of electret microphone output in Bluetooth headsets and voice recorders. IC Role / Device Role / Timing Role: Low-noise common-emitter amplifier with DC-coupled input and capacitor-coupled output. Use Value: 1 dB noise figure preserves weak audio signals; SOT23 footprint enables compact 2-layer PCB layout with minimal trace length. |
| Industrial PLC Input Isolation | Consumer Appliance Power Sequencing |
Use Scenario: Level translation and current limiting for 24 V digital inputs interfacing with 3.3 V microcontrollers. IC Role / Device Role / Timing Role: Switch-mode PNP transistor driving optocoupler LED anode in isolated input stage. Use Value: 65 V VCEO withstands industrial transients; hFE ≥220 ensures full saturation with low MCU drive current. | Use Scenario: Controlled turn-on of auxiliary power rails (e.g., display backlight, sensor supply) after main CPU initialization. IC Role / Device Role / Timing Role: Active-high enable switch using base driven by GPIO with RC time constant for soft-start delay. Use Value: Predictable hFE and low VBE(sat) allow accurate timing via passive RC network without calibration. |
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 |
|---|---|---|---|
| BC857B,115 | VCEO = 45 V, lower max voltage rating; identical SOT23 package and hFE grading. | Suitable only for ≤36 V systems; not recommended for 48 V industrial or automotive battery monitoring. | Select when lower voltage rating is acceptable and cost optimization is prioritized over margin. |
| MMBT856BLT1G | Onsemi variant with same VCEO/hFE specs but different thermal resistance (RthJS = 270 K/W vs. 240 K/W). | Requires tighter thermal layout due to 12.5% higher junction-to-solder-point resistance. | Choose only if existing BOM uses Onsemi sourcing or dual-source strategy mandates second-source validation. |
Compared with BC856B E6433, BC857B offers reduced voltage headroom but identical gain and noise performance, while MMBT856BLT1G trades slightly worse thermal resistance for alternate supply chain access - neither provides drop-in replacement without verifying layout and voltage margins.
Availability
BC856B E6433 is available at Aetrix Electronics and suitable for automotive body electronics, portable audio signal chains, and industrial PLC input isolation requiring stable component supply and long-term manufacturability.
Supply support for BC856B E6433 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 semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BC856 series belongs to Nexperia's general-purpose bipolar transistor product line, engineered specifically for robust, low-cost signal amplification and switching in automotive, industrial, and consumer applications demanding AEC-Q101 compliance and tight parametric consistency.
FAQ
What is the maximum continuous collector current for BC856B E6433?
The maximum continuous collector current (IC) is 100 mA at TS ≤ 71 °C. Derating applies above this temperature: total power dissipation drops linearly to zero at 150 °C junction temperature. Peak pulsed current reaches 200 mA with duty cycle ≤2% and pulse width <300 µs.
Is BC856B E6433 suitable for linear amplifier applications?
Yes - its low noise figure (1 dB typical), high hFE, and stable fT make it well-suited for low-level linear amplification in audio preamps and sensor signal conditioning. Designers must ensure proper biasing to maintain Class-A operation and avoid thermal runaway due to β variation with temperature.
How does the SOT23 package affect thermal performance?
The SOT23 package provides RthJS ≤ 240 K/W, meaning a 330 mW power dissipation raises junction temperature by up to 79 °C above solder-point temperature. For reliable operation, keep board copper area around pin 3 (collector) ≥ 25 mm² and avoid enclosing the device under shielding cans without thermal vias.
Can BC856B E6433 replace BC856A in existing designs?
Yes - both share identical pinout, package, and absolute maximum ratings. The difference lies in hFE grading: BC856A has hFE = 110–220, while BC856B is 220–480. Replacement is safe if circuit gain margin accommodates the higher minimum β; verify stability in feedback loops and saturation depth in switching use cases.
BC 856B E6433 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:
- 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:
- 330 mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23
BC 856B E6433 FAQ
1.How can I place an order for BC 856B E6433 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC 856B E6433 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 BC 856B E6433 reliable?
The price and inventory of BC 856B E6433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC 856B E6433 is usually 5 days.
3.What payment methods are accepted for BC 856B E6433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC 856B E6433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC 856B E6433?
BC 856B E6433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC 856B E6433 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 BC 856B E6433?
For technical support, including BC 856B E6433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC 856B E6433 requirements.
6.How does Aetrix verify that BC 856B E6433 is sourced from the original manufacturer or authorized distributors?
All BC 856B E6433 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 BC 856B E6433 meets industry standards.
7.What is the process for return or replacement of BC 856B E6433?
All BC 856B E6433 units undergo pre-shipment inspection (PSI). If there is an issue with BC 856B E6433, 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 BC 856B E6433 part is unused and in its original packaging.
Return procedure for BC 856B E6433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC 856B E6433 Tags
-
MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
onsemi
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