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Nexperia USA Inc. BC856S-QF
- Part No.:
- BC856S-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC856S-QF.pdf
- Description:
- TRANS 2PNP 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,960
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Product details
Overview
BC856S-QF from Nexperia is a dual PNP general-purpose transistor pair in SOT363-3 (TSSOP6) package, rated for −65 V VCEO, −100 mA IC, and 110 minimum hFE at −2 mA/−5 V; designed for space-constrained automotive signal switching and biasing circuits.
For engineers reviewing the BC856S-QF datasheet, BC856S-QF pinout, BC856S-QF application, or BC856S-QF equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal derating curves, matched gain performance, and dual-transistor layout implications for PCB layout and thermal management.
Technical Context
This dual PNP transistor pair integrates two electrically isolated BC856-type devices in one compact SOT363-3 package, with no mutual interference between TR1 and TR2. Each transistor supports −65 V collector-emitter breakdown and −100 mA continuous collector current under ambient conditions ≤25 °C.
It features low VCE(sat) (−100 mV typ. at −10 mA/−0.5 mA), tightly matched hFE across both transistors, and low Cc (2.5 pF), enabling stable high-frequency amplification and fast switching in analog and digital interface stages.
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 12 V/24 V automotive rails. |
| IC | −100 mA: Continuous collector current per transistor; supports LED drivers, relay coils, and logic-level translators. |
| hFE | 110 min @ −2 mA/−5 V: Ensures reliable current amplification in low-power bias networks and sensor interface stages. |
| VCE(sat) | −300 mV max @ −100 mA/−5 mA: Minimizes conduction loss in saturated-switch applications like level shifters and discrete logic gates. |
| Cc | 2.5 pF: Low collector capacitance preserves bandwidth in RF-coupled preamplifiers and high-speed switching nodes. |
| fT | 100 MHz: Transition frequency enables use in audio amplifiers and sub-MHz signal conditioning without gain roll-off. |
| Ptot (per device) | 400 mW @ Tamb ≤25 °C on 1 cm² collector pad: Supports thermally robust operation in dense automotive control modules. |
Pinout & Package
SOT363-3 (TSSOP6) plastic surface-mount package: 1.7 mm × 2.65 mm footprint, 0.65 mm pitch, 0.95 mm max height; optimized for automated reflow assembly and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of Transistor 1: Common reference node for TR1; connects to load return or bias network ground. |
| 2 | B1 | Base of Transistor 1: Input control terminal for TR1; requires current-limiting resistor for saturation drive. |
| 3 | C2 | Collector of Transistor 2: High-side output node for TR2; ties to supply rail or active pull-up stage. |
| 4 | E2 | Emitter of Transistor 2: Return path for TR2; may be tied to common emitter node or independent bias point. |
| 5 | B2 | Base of Transistor 2: Independent control input for TR2; enables dual-channel logic or complementary switching. |
| 6 | C1 | Collector of Transistor 1: Primary output node for TR1; used for current sinking or inverted signal generation. |
Key Features
| Feature | Design Value |
|---|---|
| Low collector-emitter saturation voltage | VCE(sat) ≤ −300 mV at −100 mA ensures <100 mW conduction loss per transistor in switching mode. |
| Closely matched DC current gain | hFE tracking between TR1/TR2 enables precision current mirroring and differential biasing without trimming. |
| No mutual interference | Electrically isolated die structure eliminates crosstalk-critical for noise-sensitive analog front-ends and mixed-signal IC interfaces. |
| AEC-Q101 qualified | Stress-tested for automotive temperature range (−65 °C to +150 °C) and humidity, vibration, and ESD robustness. |
| Reduced board space | Dual-transistor integration cuts component count by 50% vs. discrete SOT23 pairs; saves ≥3.5 mm² PCB area. |
Applications
| Automotive Door Module Switching | Industrial PLC Input Conditioning |
|---|---|
|
Use Scenario: Controlling window lift motor direction and lock/unlock solenoids via microcontroller GPIOs in door control units. IC Role / Device Role / Timing Role: Dual PNP pair acts as level-shifting, current-amplifying interface between 3.3 V MCU outputs and 12 V loads. Use Value: −65 V rating withstands load-dump transients; matched hFE ensures consistent turn-on timing across both motor directions. |
Use Scenario: Converting 24 V industrial field signals into clean 5 V logic levels for FPGA or ARM-based controller inputs. IC Role / Device Role / Timing Role: One transistor functions as active-low input buffer; second provides pull-up or bias stabilization. Use Value: Low Cc (2.5 pF) preserves signal edge integrity up to 10 MHz; AEC-Q101 qualification ensures reliability in factory-floor environments. |
| LED Driver for Dashboard Backlight | Discrete Logic Inverter Pair |
|
Use Scenario: Driving segmented CCFL or white LED strings in instrument cluster backlighting with PWM dimming. IC Role / Device Role / Timing Role: Each transistor operates as constant-current sink in linear or saturated mode, controlled by PWM duty cycle. Use Value: −100 mV typical VCE(sat) minimizes power dissipation at 50 mA per segment; thermal resistance Rth(j-sp) = 230 K/W enables direct solder-point cooling. |
Use Scenario: Implementing non-inverting and inverting logic gates in legacy analog-digital hybrid systems where gate ICs are unavailable. IC Role / Device Role / Timing Role: TR1 configured as emitter-follower buffer; TR2 as common-emitter inverter-both sharing common bias network. Use Value: Tight hFE matching ensures identical propagation delay and rise/fall symmetry; SOT363-3 footprint allows tight layout coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC857S-Q | Higher hFE (220 min vs. 110 min); same VCEO/IC ratings and SOT363-3 package. | Better suited for low-drive applications (e.g., microcontroller GPIOs with limited sink capability). | Select when higher current gain is required without changing layout or thermal design. |
| MBT3906DW1T1G | Lower VCEO (−40 V), same IC (−100 mA), but not AEC-Q101 qualified; SO-8 package (larger footprint). | Acceptable for non-automotive industrial use; unsuitable for 12 V/24 V load-dump environments. | Choose only for cost-sensitive non-automotive designs where qualification is not mandated. |
Compared with BC856S-QF, BC857S-Q offers doubled current gain for weak-drive scenarios, while MBT3906DW1T1G trades automotive qualification and compact size for lower unit cost in benign environments.
Availability
BC856S-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, LED backlight drivers, and discrete logic interface circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BC856S-QF 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 advanced packaging.
The BC856S-QF belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for space-constrained, thermally demanding automotive and industrial control applications.
FAQ
What is the maximum junction temperature for BC856S-QF?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in IEC 60134 limiting values. Operation above this threshold risks permanent parametric shift or failure. Derating begins at Tamb > 25 °C per Figure 1, with Ptot reduced linearly to zero at 150 °C ambient for the 400 mW configuration.
Is BC856S-QF pin-compatible with BC846S or BC847S series?
No-BC856S-QF is a PNP/PNP pair, whereas BC846S/BC847S are NPN/NPN dual transistors. Pin numbering matches SOT363-3 mechanical outline, but circuit function is inverted: collectors and emitters serve opposite polarity roles, making direct substitution unsafe without schematic revision.
Does BC856S-QF support pulsed operation beyond its DC ratings?
Yes-transient thermal impedance data (Figure 2 and 3) confirms safe pulsed operation up to 220 mW per transistor for pulse widths ≤10 ms and duty cycles ≤2%, provided peak IC remains ≤−100 mA and VCE ≤−65 V. Pulse testing must respect VBE limits (−5 V) and avoid secondary breakdown.
How is the "Q" suffix in BC856S-QF interpreted?
The "Q" denotes AEC-Q101 qualification per Automotive Electronics Council standards; "F" indicates tape-and-reel packaging per standard ordering code conventions (e.g., BC856S-QF = BC856S-Q in 3 k reel). This suffix does not indicate functional difference from BC856S-Q but confirms full automotive stress-test compliance and traceable lot documentation.
BC856S-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 PNP (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 65V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 110 @ 2mA, 5V
- Power - Max:
- 220mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BC856S-QF FAQ
1.How can I place an order for BC856S-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BC856S-QF 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 BC856S-QF reliable?
The price and inventory of BC856S-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC856S-QF is usually 5 days.
3.What payment methods are accepted for BC856S-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC856S-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC856S-QF?
BC856S-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC856S-QF 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 BC856S-QF?
For technical support, including BC856S-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC856S-QF requirements.
6.How does Aetrix verify that BC856S-QF is sourced from the original manufacturer or authorized distributors?
All BC856S-QF 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 BC856S-QF meets industry standards.
7.What is the process for return or replacement of BC856S-QF?
All BC856S-QF units undergo pre-shipment inspection (PSI). If there is an issue with BC856S-QF, 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 BC856S-QF part is unused and in its original packaging.
Return procedure for BC856S-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC856S-QF Tags
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