My Inquiry
My Account
Nexperia USA Inc. BC856S-QH
- Part No.:
- BC856S-QH
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC856S-QH.pdf
- Description:
- TRANS 2PNP 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,261
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC856S-QH 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; qualified to AEC-Q101 and used in automotive signal switching and biasing networks.
For engineers reviewing the BC856S-QH datasheet, BC856S-QH pinout, BC856S-QH application, or BC856S-QH equivalent, this page delivers verified electrical specs, thermal derating curves, matched gain performance, automotive qualification status, and SMT footprint details for layout and reliability validation.
Technical Context
This dual PNP transistor pair integrates two electrically isolated transistors with tightly matched DC current gain (hFE ≥110 at −2 mA/−5 V) and low mutual interference-enabling compact differential or complementary bias circuits without cross-coupling. Each transistor supports −65 V collector-emitter breakdown and −80 V collector-base rating under open-base conditions.
Thermal design is supported by per-transistor Rth(j-a) of 568 K/W (standard FR4) and 500 K/W (enhanced pad), plus per-device total power dissipation up to 400 mW at Tamb ≤25 °C-critical for space-constrained automotive modules operating across −65 °C to +150 °C ambient.
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 interface loads. |
| hFE | 110 min @ −2 mA/−5 V: Ensures stable small-signal amplification and predictable base drive requirements in bias networks. |
| VCE(sat) | −300 mV max @ −100 mA/−5 mA: Low saturation voltage minimizes power loss and heat generation in switching applications. |
| Cc | 2.5 pF max @ −10 V: Low collector capacitance preserves high-frequency response up to 100 MHz fT in active circuits. |
| Ptot (per device) | 400 mW @ Tamb ≤25 °C w/ 1 cm² collector pad: Enables higher power operation than standard footprint without thermal throttling. |
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; optimized for reflow soldering with defined solder paste stencil openings (0.5 mm × 0.5 mm for pins 1–4, 0.6 mm × 0.6 mm for pins 5–6).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of TR1 | Low-impedance current sink node for first transistor; connects directly to ground or load return path. |
| 2 | Base of TR1 | Control input for TR1; requires current-limited drive due to VBE(sat) ≈ −700 mV at −10 mA. |
| 3 | Collector of TR2 | High-side output node for second transistor; rated for −65 V blocking and −100 mA conduction. |
| 4 | Emitter of TR2 | Common emitter reference for TR2; electrically isolated from TR1's emitter for independent biasing. |
| 5 | Base of TR2 | Independent control input; enables dual-channel switching without shared base resistance or crosstalk. |
| 6 | Collector of TR1 | Primary high-side output for TR1; pin 6 and pin 3 are separate collectors allowing split-load configurations. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Qualified for automotive use per Stress Test Qualification for Discrete Semiconductors-validates reliability under temperature cycling, humidity, and mechanical shock. |
| Closely matched hFE | Paired transistors exhibit tight DC current gain tracking-reducing calibration overhead in differential amplifiers and current mirrors. |
| No mutual interference | Electrically isolated die structure prevents signal coupling between TR1 and TR2-essential for noise-sensitive analog front-ends. |
| Low VCE(sat) | −300 mV max ensures <15 mW conduction loss at −100 mA-critical for thermally constrained PCBs in engine control units. |
| Reduced board space | Dual-transistor integration cuts component count vs. discrete SOT23 solutions-saves ≥30% area in compact ECU and body-control modules. |
Applications
| Automotive Door Module Switching | LED Tail Light Current Sink |
|---|---|
|
Use Scenario: Controlling window lift motors and lock actuators via microcontroller GPIO in door control units. IC Role / Device Role / Timing Role: Dual PNP switch providing level-shifted, current-amplified drive to 12 V inductive loads. Use Value: −65 V VCEO withstands load-dump transients; matched hFE ensures consistent turn-on timing across both channels. |
Use Scenario: Sinking current from red/amber LED strings in rear lighting assemblies. IC Role / Device Role / Timing Role: Constant-current sink configured with external base resistor for brightness control. Use Value: −300 mV VCE(sat) minimizes voltage drop across transistor, preserving forward voltage margin for LED string regulation. |
| Engine Control Unit Bias Network | Body Control Module Signal Inversion |
|
Use Scenario: Generating stable reference currents for sensor signal conditioning in harsh under-hood environments. IC Role / Device Role / Timing Role: Matched PNP pair forming precision current mirror with <±5% gain error over −40 °C to +125 °C. Use Value: Tight hFE matching and 150 °C Tj rating ensure stable bias current despite thermal cycling in ECU power stages. |
Use Scenario: Inverting logic signals from CAN transceivers or LIN bus controllers before driving optocouplers. IC Role / Device Role / Timing Role: Fast-switching PNP inverter stage with 100 MHz fT supporting >1 Mbps digital signal integrity. Use Value: 2.5 pF Cc limits capacitive loading on upstream drivers, maintaining rise/fall times below 10 ns at 3.3 V logic levels. |
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 range (220–475 vs. 110–220); identical VCEO/IC ratings and SOT363-3 package. | Better suited for low-base-drive applications like high-gain preamplifiers; less optimal where gain stability > absolute gain matters. | Select BC857S-Q when base current budget is constrained and tighter hFE tolerance is not required. |
| MBT3906DW1T1G | Same dual PNP topology but rated only to −40 V VCEO; not AEC-Q101 qualified; TO-236AB (SOT-363) package with minor footprint variance. | Limited to non-safety-critical consumer or industrial boards; unsuitable for 12 V automotive load-dump scenarios. | Choose MBT3906DW1T1G only for cost-sensitive, non-automotive designs where −40 V rating suffices and qualification is unnecessary. |
Compared with BC856S-QH, BC857S-Q offers higher gain flexibility at no package or thermal penalty, while MBT3906DW1T1G trades automotive qualification and voltage margin for lower unit cost in benign environments.
Availability
BC856S-QH is available at Aetrix Electronics and suitable for automotive door modules, LED lighting systems, engine control units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BC856S-QH 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 mobile markets.
BC856S-QH belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for robust, space-efficient switching and biasing in automotive electronic control units and body electronics.
FAQ
Is BC856S-QH pin-compatible with BC856BS?
No. BC856S-QH uses SOT363-3 (TSSOP6) with 6-pin configuration and specific pinout (E1-B1-C2-E2-B2-C1), whereas BC856BS is a single-transistor SOT323 package. The dual-transistor architecture and footprint differ fundamentally-PCB layout and schematic symbols are not interchangeable.
What is the maximum allowable pulsed collector current for BC856S-QH?
The datasheet specifies −100 mA as the continuous collector current rating. For pulsed operation (tp ≤ 300 µs, duty cycle δ ≤ 0.02), VCE(sat) is characterized up to −100 mA, and no higher pulsed IC is defined. Exceeding −100 mA risks thermal runaway or bond-wire failure even in short pulses.
Does BC856S-QH support hot-swap or in-circuit programming?
No. BC856S-QH is a passive switching device without built-in protection circuitry, ESD hardening beyond standard HBM 2 kV, or programmable features. It must be operated within Absolute Maximum Ratings-including −5 V VEBO-and is not designed for live-insertion or dynamic reconfiguration.
How does the thermal resistance change when using the enhanced 1 cm² collector pad?
With a 1 cm² copper pad on FR4, Rth(j-a) improves from 568 K/W (standard footprint) to 500 K/W per transistor, and per-device Ptot increases from 300 mW to 400 mW at Tamb ≤25 °C. This 12% thermal resistance reduction enables ~33% higher power handling before reaching 150 °C junction limit.
BC856S-QH 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-QH FAQ
1.How can I place an order for BC856S-QH through Aetrix?
Please submit a Request for Quotation (RFQ) for BC856S-QH 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-QH reliable?
The price and inventory of BC856S-QH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC856S-QH is usually 5 days.
3.What payment methods are accepted for BC856S-QH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC856S-QH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC856S-QH?
BC856S-QH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC856S-QH 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-QH?
For technical support, including BC856S-QH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC856S-QH requirements.
6.How does Aetrix verify that BC856S-QH is sourced from the original manufacturer or authorized distributors?
All BC856S-QH 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-QH meets industry standards.
7.What is the process for return or replacement of BC856S-QH?
All BC856S-QH units undergo pre-shipment inspection (PSI). If there is an issue with BC856S-QH, 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-QH part is unused and in its original packaging.
Return procedure for BC856S-QH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC856S-QH Tags
-
MBT3946DW1T1G
onsemi
-
BC846BPDW1T1G
onsemi
-
MBT2222ADW1T1G
onsemi
-
BC847BDW1T1G
onsemi
-
DMMT5401-7-F
Diodes Incorporated
-
DMMT5551-7-F
Diodes Incorporated
-
DMMT3904W-7-F
Diodes Incorporated
-
DMMT3906W-7-F
Diodes Incorporated
-
FMB3904
onsemi
-
FMB2222A
onsemi
-
ULQ2003D1013TR
STMicroelectronics
-
ZXTD4591E6TA
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
