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Nexperia USA Inc. BC856BS/ZLF
- Part No.:
- BC856BS/ZLF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC856BS/ZLF.pdf
- Description:
- TRANSISTOR
- Quantity:
- Payment:
- Shipping:
Inventory:6,056
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Product details
Overview
BC856BS/ZLF from Nexperia is a dual PNP general-purpose transistor pair in SOT363-3 (TSSOP6) package, rated for −65 V VCEO, −100 mA IC, and 200–450 hFE per transistor. It delivers matched current gain, low VCE(sat) (−200 mV typ. at −100 mA), and <2.3 pF collector capacitance, enabling compact dual-switching or differential amplification in space-constrained analog and logic interface circuits.
For engineers reviewing the BC856BS datasheet, BC856BS pinout, BC856BS application, or BC856BS equivalent, this device serves as a high-reliability, low-interference dual PNP solution for discrete signal conditioning, level translation, and complementary pair biasing where thermal coupling and parameter matching matter.
Technical Context
The BC856BS integrates two electrically isolated PNP transistors in a single TSSOP6 package with no mutual interference-enabling independent biasing and switching. Each transistor supports VCEO = −65 V, IC = −100 mA continuous, and operates across −55 °C to +150 °C ambient temperature.
Its low 2.3 pF collector capacitance and 100 MHz fT support stable operation up to mid-frequency analog stages, while its −200 mV VCE(sat) at −100 mA/−5 mA drive enables efficient low-voltage switching in battery-powered logic interfaces and LED drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −65 V - Maximum safe collector-emitter voltage with base open; defines high-side switch headroom in negative-rail applications. |
| IC | −100 mA - Continuous collector current per transistor; supports medium-current load switching without forced cooling. |
| hFE | 200–450 @ VCE = −5 V, IC = −2 mA - Tight DC current gain spread enables predictable biasing in mirror or amplifier configurations. |
| VCE(sat) | −200 mV typ. @ IC = −100 mA, IB = −5 mA - Low saturation voltage minimizes power loss and heat generation in saturated-switch mode. |
| Cc | 2.3 pF @ VCB = −10 V - Low collector capacitance preserves bandwidth and reduces Miller effect in amplifier stages. |
| fT | 100 MHz @ VCE = −5 V, IC = −10 mA - Enables use in audio preamps and low-speed digital signal conditioning up to ~10 MHz. |
| Ptot (per device) | 300 mW @ Tamb ≤ 25 °C on FR4 PCB - Total dissipation budget for both transistors under standard mounting conditions. |
Pinout & Package
SOT363-3 (TSSOP6) plastic surface-mount package: 1.7 mm × 2.9 mm footprint, 0.65 mm pitch, 0.95 mm max height, with exposed pad not present. Designed for reflow/wave soldering per IPC-7095 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of TR1 | Current sink node for first transistor; connects to local ground or negative rail reference in common-emitter switches. |
| 2 | Base of TR1 | Control input for TR1; requires current-limited drive (e.g., 1–5 mA) to achieve full saturation. |
| 3 | Collector of TR2 | Output node for second transistor; ties to load or pull-up resistor in active-high switching configurations. |
| 4 | Emitter of TR2 | Current sink node for second transistor; electrically isolated from E1 but shares same package thermal mass. |
| 5 | Base of TR2 | Independent control input for TR2; enables asynchronous dual switching without cross-talk. |
| 6 | Collector of TR1 | Output node for first transistor; used in emitter-follower or common-emitter topologies with defined load path. |
Key Features
| Feature | Design Value |
|---|---|
| Low collector-emitter saturation voltage | −200 mV typical at −100 mA collector current enables <20 mW conduction loss per transistor in switching mode. |
| Closely matched hFE | Paired transistors exhibit tightly distributed DC current gain (200–450), reducing calibration need in current mirrors or differential pairs. |
| No mutual interference | Electrically isolated die structure prevents crosstalk between TR1 and TR2-critical for noise-sensitive analog front-ends. |
| Reduced board space | Dual-transistor integration cuts component count by 50% vs. discrete SOT23 devices, saving ≥3.5 mm² PCB area. |
| Low collector capacitance | 2.3 pF collector-base capacitance limits Miller feedback, supporting stable gain up to 10 MHz in small-signal amplifiers. |
Applications
| LED Driver Circuit | Level Translation Interface |
|---|---|
|
Use Scenario: Driving dual-color (e.g., red/green) LEDs from 3.3 V microcontroller GPIOs with inverted logic polarity. IC Role / Device Role / Timing Role: Dual PNP switch providing active-low current sinking for each LED anode, with independent enable control via bases. Use Value: −200 mV VCE(sat) ensures >95% LED forward voltage utilization; matched hFE guarantees consistent brightness across colors. |
Use Scenario: Translating 5 V TTL logic signals down to 3.3 V or 1.8 V I/O domains in mixed-voltage MCU systems. IC Role / Device Role / Timing Role: Active-pullup level shifter using emitter-follower configuration for bidirectional or unidirectional voltage translation. Use Value: Low Cc (2.3 pF) and 100 MHz fT preserve rise/fall times below 3.5 ns, supporting >20 MHz data rates without added delay. |
| Differential Amplifier Bias Cell | Complementary Pair Pre-driver |
|
Use Scenario: Providing matched bias current to the emitters of a discrete NPN/PNP differential pair in op-amp input stages. IC Role / Device Role / Timing Role: Dual constant-current source using two BC856BS transistors in diode-connected configuration with shared reference resistor. Use Value: Tight hFE distribution (200–450) ensures <±3% current mismatch between legs, improving CMRR by >15 dB over discrete solutions. |
Use Scenario: Driving gate terminals of complementary MOSFETs in half-bridge motor control or Class AB audio output stages. IC Role / Device Role / Timing Role: Dual PNP pre-driver stage sourcing base current to N-channel MOSFET gates and sinking current from P-channel gates. Use Value: Isolated terminals prevent shoot-through risk during transition; −65 V VCEO supports 48 V bus-level gate driving with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC857BS | VCEO = −45 V (vs. −65 V); hFE = 220–475; otherwise identical pinout and package. | Lower breakdown margin limits use in >36 V systems; suitable for 3.3/5 V logic and low-voltage analog only. | Select when system rail voltage stays ≤30 V and higher gain consistency is prioritized over voltage headroom. |
| MBT3906DW1T1G | Same VCEO (−40 V), but lower hFE (100–300); different pinout (SOT-363, but pin 1 = B1, pin 2 = C1, pin 3 = E1). | Non-pin-compatible layout change required; reduced gain range increases bias sensitivity in precision circuits. | Choose only if legacy design uses ON Semiconductor footprint and voltage requirements are ≤30 V. |
Compared with BC857BS and MBT3906DW1T1G, the BC856BS offers superior voltage rating and tighter hFE tolerance-making it optimal for industrial 24–48 V control logic and precision bias networks where reliability and matching outweigh minor cost differences.
Availability
BC856BS/ZLF is available at Aetrix Electronics and suitable for LED driver circuits, level translation interfaces, differential amplifier bias cells, and complementary pair pre-drivers requiring stable component supply and guaranteed long-term manufacturability.
Supply support for BC856BS/ZLF 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BC856BS belongs to Nexperia's general-purpose bipolar transistor family, engineered for high-volume, space-constrained applications demanding matched performance, low parasitics, and robust thermal behavior in SMT packaging.
FAQ
Is BC856BS/ZLF RoHS compliant and halogen-free?
Yes. BC856BS/ZLF meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. The "ZLF" suffix explicitly denotes lead-free, green-compliant construction with matte tin termination and no antimony or bromine-based flame retardants in the molding compound.
What is the maximum allowable pulsed collector current for BC856BS?
The peak collector current ICM is −200 mA for single pulses with duration ≤1 ms and duty cycle ≤2%, as specified in the Absolute Maximum Ratings table. Exceeding this value-even briefly-risks permanent junction damage due to localized thermal runaway.
Can BC856BS be used in linear amplifier configurations?
Yes, but with constraints: its fT of 100 MHz and low noise figure (2.9 dB @ 1 kHz) support audio-frequency small-signal amplification, provided VCE is maintained ≥−5 V and power dissipation stays within 300 mW per device under derated ambient conditions.
How does the thermal resistance differ between per-transistor and per-device ratings?
Rth(j-a) is 625 K/W per transistor (isolated operation) but improves to 416 K/W per device (both transistors active), reflecting shared thermal mass in the SOT363-3 package-meaning simultaneous conduction lowers average junction temperature versus sequential use at same total power.
BC856BS/ZLF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BC856BS/ZLF FAQ
1.How can I place an order for BC856BS/ZLF through Aetrix?
Please submit a Request for Quotation (RFQ) for BC856BS/ZLF 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 BC856BS/ZLF reliable?
The price and inventory of BC856BS/ZLF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC856BS/ZLF is usually 5 days.
3.What payment methods are accepted for BC856BS/ZLF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC856BS/ZLF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC856BS/ZLF?
BC856BS/ZLF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC856BS/ZLF 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 BC856BS/ZLF?
For technical support, including BC856BS/ZLF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC856BS/ZLF requirements.
6.How does Aetrix verify that BC856BS/ZLF is sourced from the original manufacturer or authorized distributors?
All BC856BS/ZLF 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 BC856BS/ZLF meets industry standards.
7.What is the process for return or replacement of BC856BS/ZLF?
All BC856BS/ZLF units undergo pre-shipment inspection (PSI). If there is an issue with BC856BS/ZLF, 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 BC856BS/ZLF part is unused and in its original packaging.
Return procedure for BC856BS/ZLF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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