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Nexperia USA Inc. BC857BSH-QX
- Part No.:
- BC857BSH-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC857BSH-QX.pdf
- Description:
- TRANS 2PNP 45V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,455
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Product details
Overview
BC857BSH-QX from Nexperia is a dual PNP general-purpose transistor in SOT363 (SC-88) package, rated for −45 V VCEO, −100 mA IC, and 200–450 hFE per transistor, with matched gain and low VCE(sat) down to −200 mV at IC = −100 mA/ IB = −5 mA. It serves as a compact, AEC-Q101-qualified switching/amplification pair in automotive body control modules.
For engineers reviewing the BC857BSH-QX datasheet, BC857BSH-QX pinout, BC857BSH-QX application, or BC857BSH-QX equivalent, this page delivers verified electrical specs, validated dual-transistor pin mapping, automotive-grade thermal derating data, and direct alternatives with documented parameter divergence.
Technical Context
This device integrates two electrically isolated PNP transistors in one monolithic die, sharing no internal coupling-ensuring zero mutual interference during simultaneous switching. Each transistor supports VCEO = −45 V, IC = −100 mA continuous, and operates up to Tj = 175 °C with Rth(j-a) = 375 K/W (per device on FR4).
Its low Cc = 1.8 pF and fT = 100 MHz enable stable high-frequency amplification, while VBE(sat) = −875 mV at IC = −100 mA ensures efficient base drive in low-voltage automotive logic interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum safe collector-emitter voltage per transistor under open-base conditions; defines rail compatibility in 12 V/24 V automotive systems. |
| IC | −100 mA - Continuous DC collector current rating per transistor; supports LED drivers and relay coils without external heatsinking. |
| hFE | 200–450 - DC current gain at VCE = −5 V, IC = −2 mA; enables precise biasing in analog amplifiers and feedback networks. |
| VCE(sat) | −200 mV (typ.) - Saturation voltage at IC = −100 mA / IB = −5 mA; minimizes conduction loss in high-duty-cycle switching. |
| Cc | 1.8 pF - Collector capacitance at VCB = −10 V; limits Miller effect in >10 MHz signal paths. |
| Tj(max) | 175 °C - Maximum junction temperature; qualified per AEC-Q101 for under-hood applications including engine control units. |
Pinout & Package
SOT363 (SC-88) surface-mount plastic package: 2.1 mm × 1.25 mm × 0.95 mm body, 0.65 mm lead pitch, 6-terminal TSSOP configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of Transistor 1 - Common reference node for TR1; connects to load return path in high-side switch topology. |
| 2 | B1 | Base of Transistor 1 - Controls TR1 conduction; requires current-limited drive to maintain hFE-based gain stability. |
| 3 | C2 | Collector of Transistor 2 - Output node for TR2; sinks current to ground when TR2 is active in low-side configuration. |
| 4 | E2 | Emitter of Transistor 2 - Reference node for TR2; ties to system ground or bias rail depending on switching architecture. |
| 5 | B2 | Base of Transistor 2 - Independent control input for TR2; decoupled from TR1 to prevent crosstalk in dual-channel logic gates. |
| 6 | C1 | Collector of Transistor 1 - Primary output for TR1; used in complementary push-pull stages with BC847BSH-Q NPN pair. |
Key Features
| Feature | Design Value |
|---|---|
| Closely matched hFE | Both transistors exhibit ≤15% hFE spread at IC = −2 mA, enabling balanced current sharing in differential pairs. |
| No mutual interference | Electrically isolated die structure eliminates capacitive or resistive coupling between TR1 and TR2, critical for noise-sensitive sensor interfaces. |
| AEC-Q101 qualification | Stress-tested per Automotive Electronics Council standards for temperature cycling, HTRB, and ESD, ensuring reliability in automotive ECUs. |
| Low VCE(sat) | −200 mV typical at full rated current reduces power dissipation by >30% vs. standard PNP transistors, easing thermal design. |
Applications
| Automotive Door Module Switching | LED Driver for Instrument Cluster |
|---|---|
|
Use Scenario: Controlling window lift motors and mirror actuators via microcontroller GPIOs in door control units. IC Role / Device Role / Timing Role: Dual PNP switch providing high-side drive for 12 V loads with independent enable/disable per channel. Use Value: Eliminates need for two discrete SOT23 devices, saving 3.2 mm² PCB area and reducing BOM count by one component. |
Use Scenario: Driving multiplexed red/green LEDs in vehicle instrument clusters requiring precise current regulation. IC Role / Device Role / Timing Role: Constant-current sink stage using matched hFE to stabilize LED brightness across temperature. Use Value: 200–450 hFE range ensures consistent dimming response from −40 °C to +125 °C ambient. |
| Engine Control Unit Signal Conditioning | Industrial PLC Input Isolation |
|
Use Scenario: Level-shifting and buffering crankshaft position sensor signals before ADC sampling in engine management systems. IC Role / Device Role / Timing Role: Low-capacitance (Cc = 1.8 pF) amplifier stage preserving signal edge integrity up to 10 MHz. Use Value: Enables accurate 1° crank angle resolution at 8000 RPM without waveform distortion. |
Use Scenario: Optocoupler replacement in 24 V DC input modules for programmable logic controllers. IC Role / Device Role / Timing Role: High-temperature (Tj = 175 °C) discrete interface translating field signals to MCU logic levels. Use Value: Supports operation in uncooled control cabinets where ambient exceeds 85 °C, eliminating forced-air cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC857BDSH-Q | Same VCEO/IC/hFE, but SOT353 (SC-70) package - 0.65 mm pitch, 2.1 mm × 1.25 mm footprint, 0.9 mm height. | Lower thermal resistance (Rth(j-a) = 450 K/W vs. 375 K/W) limits sustained 100 mA operation in high-ambient environments. | Select when board space is constrained and peak power < 150 mW; avoid in under-hood locations above 105 °C ambient. |
| MBT3906DW1T1G | Higher VCEO = −40 V (vs. −45 V), lower hFE = 100–300, and higher VCE(sat) = −400 mV at same IC/IB. | Not AEC-Q101 qualified; lacks automotive stress test validation and 175 °C junction rating. | Acceptable for industrial non-automotive use where cost is prioritized over temperature margin and qualification traceability. |
Compared with BC857BDSH-Q, BC857BSH-Q offers superior thermal performance and identical gain matching in a mechanically robust SOT363; versus MBT3906DW1T1G, it delivers tighter hFE tolerance, lower saturation loss, and full automotive qualification-critical for safety-relevant subsystems.
Availability
BC857BSH-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and high-reliability LED driver designs requiring stable component supply across extended temperature ranges.
Supply support for BC857BSH-QX 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 and logic devices for automotive, industrial, and consumer markets.
BC857BSH-QX belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for space-constrained, high-temperature automotive control modules requiring dual-channel switching without cross-talk.
FAQ
What is the maximum continuous collector current per transistor in BC857BSH-QX?
The BC857BSH-QX supports −100 mA continuous collector current per transistor at Tamb ≤ 25 °C on FR4 PCB with standard footprint. Derating applies above 25 °C per Fig. 1: power dissipation drops linearly to 0 mW at 175 °C junction temperature.
Does BC857BSH-QX support operation at 175 °C junction temperature?
Yes-BC857BSH-QX is qualified to operate with Tj up to 175 °C per AEC-Q101 testing, and its limiting values table explicitly specifies Tj(max) = 175 °C. Thermal resistance data confirms viability on FR4 PCBs with proper layout.
How are the two transistors isolated within the SOT363 package?
The transistors share no internal connection-pin assignments (E1/B1/C1 and E2/B2/C2) are fully independent, and the datasheet explicitly states "no mutual interference." Electrical isolation is achieved through physical separation on the die and separate bonding wires.
Is BC857BSH-QX pin-compatible with BC847BSH-Q?
No-BC857BSH-QX (dual PNP) and BC847BSH-Q (dual NPN) share the same SOT363 package and pinout order, but polarity reversal means direct substitution would invert logic behavior. They are functional complements, not drop-in replacements.
BC857BSH-QX 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):
- 45V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 270mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BC857BSH-QX FAQ
1.How can I place an order for BC857BSH-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC857BSH-QX 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 BC857BSH-QX reliable?
The price and inventory of BC857BSH-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC857BSH-QX is usually 5 days.
3.What payment methods are accepted for BC857BSH-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC857BSH-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC857BSH-QX?
BC857BSH-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC857BSH-QX 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 BC857BSH-QX?
For technical support, including BC857BSH-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC857BSH-QX requirements.
6.How does Aetrix verify that BC857BSH-QX is sourced from the original manufacturer or authorized distributors?
All BC857BSH-QX 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 BC857BSH-QX meets industry standards.
7.What is the process for return or replacement of BC857BSH-QX?
All BC857BSH-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC857BSH-QX, 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 BC857BSH-QX part is unused and in its original packaging.
Return procedure for BC857BSH-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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