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Diodes Incorporated BC856ASQ-7-F
- Part No.:
- BC856ASQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC856ASQ-7-F.pdf
- Description:
- TRANS 2PNP 65V 100MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:2,464
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Product details
Overview
BC856ASQ-7-F from Diodes Incorporated is a dual PNP bipolar junction transistor (BJT) in SOT363 package, rated for -65V VCEO, -100mA IC, and 125–250 hFE at -2mA/-5V; designed for automotive switching and audio-frequency amplification with AEC-Q101 qualification.
For engineers reviewing the BC856ASQ-7-F datasheet, BC856ASQ-7-F pinout, BC856ASQ-7-F application, or BC856ASQ-7-F equivalent, this part supports high-reliability dual-PNP signal control in constrained PCB layouts, requiring verified VCE(SAT), thermal derating, and lead-free compliance for automotive-grade production.
Technical Context
This dual PNP transistor integrates two independent BJT elements in one SOT363 package, sharing no internal connection between channels. Each emitter-base-collector structure supports discrete switching and linear amplification with separate biasing networks.
It operates across -55°C to +150°C, with thermal resistance RθJA = 625°C/W on standard FR4 layout, and delivers fT = 100MHz at VCE = -5V/IC = -10mA - enabling stable AF gain up to ~10kHz with minimal phase shift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -65V - supports rail-to-rail switching in 48V automotive subsystems without breakdown |
| IC | -100mA - handles typical load currents for LED drivers, relay coils, and sensor interface stages |
| hFE | 125–250 - ensures predictable DC gain for bias-stable amplifier and switch saturation design |
| VCE(SAT) | -75mV to -650mV - low saturation voltage reduces conduction loss in active-low switching paths |
| fT | 100MHz - enables reliable small-signal amplification up to audio band with margin |
| PD | 200mW - defines maximum continuous power dissipation on standard PCB layout at 25°C ambient |
| RθJA | 625°C/W - quantifies thermal performance for derating calculations above 25°C ambient |
Pinout & Package
Package: SOT363 - surface-mount, 6-pin, dual-transistor plastic case with matte tin terminals, UL 94V-0 rated molding compound, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1 | Collector of Transistor 1 | Primary current sink node for first PNP element; connects to positive supply via load |
| E1 | Emitter of Transistor 1 | Common reference node for first transistor; typically tied to VCC or pulled high |
| B1 | Base of Transistor 1 | Current-controlled input for switching/amplification of first channel |
| C2 | Collector of Transistor 2 | Independent current sink for second PNP; electrically isolated from C1/E1/B1 |
| E2 | Emitter of Transistor 2 | Reference node for second transistor; not internally connected to E1 |
| B2 | Base of Transistor 2 | Separate control input enabling dual-channel operation without cross-talk |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HTRB, and ESD testing per stress test plan |
| Dual independent PNP topology | Enables compact dual-channel logic inversion or complementary driver stages without external isolation |
| VCEO = -65V / VCBO = -80V | Supports robust operation in 24V/48V battery systems with transient margin against load dump |
| Lead-free & halogen-free "Green" construction | Complies with RoHS 2 and automotive ELV directives; eliminates brominated flame retardants and antimony compounds |
| SOT363 footprint | Reduces board area by ~40% vs. two discrete SOT23 devices while maintaining manual rework feasibility |
Applications
| Automotive Door Module Control | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving window lift motor relays and door lock solenoids in body control modules. IC Role / Device Role / Timing Role: Dual PNP switch providing active-low control of 12V/24V inductive loads with independent enable lines. Use Value: Single-package dual-channel operation reduces component count and improves layout density versus discrete transistors. | Use Scenario: Amplifying low-level thermistor or RTD bridge outputs in programmable logic controllers. IC Role / Device Role / Timing Role: Discrete PNP pair configured as cascode or differential pair for noise-immune analog front-end gain. Use Value: Matched hFE and VBE(ON) across channels improves common-mode rejection in precision instrumentation. |
| Consumer Audio Pre-amplifier Stage | Medical Infusion Pump Motor Driver |
Use Scenario: Low-noise pre-amplification of microphone signals in portable hearing aids and voice recorders. IC Role / Device Role / Timing Role: Class-A PNP amplifier stage biased at -2mA for optimal linearity and THD below 0.5%. Use Value: fT = 100MHz and low VCE(SAT) ensure wide bandwidth and minimal distortion in 20Hz–20kHz band. | Use Scenario: Controlling stepper motor phase current in battery-powered infusion pumps requiring fail-safe shutdown. IC Role / Device Role / Timing Role: Dual PNP configured as current-limiting switch and fault-indicator driver with independent diagnostics. Use Value: AEC-Q101 qualification and -55°C to +150°C operating range support long-term reliability in safety-critical medical environments. |
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,115 (Nexperia) | VCEO = -45V, hFE = 200–450, same SOT363 package | Limited to 12V/24V systems; higher gain but lower breakdown margin | Select when higher DC gain is prioritized over voltage headroom in non-automotive designs |
| MBT3906DW1T1G (onsemi) | VCEO = -40V, fT = 250MHz, same pinout, AEC-Q101 qualified | Higher speed but reduced voltage rating; optimized for fast-switching over high-voltage tolerance | Prefer for PWM-driven loads where switching edge rate matters more than VCEO margin |
Compared with BC856ASQ-7-F, BC857BS offers higher hFE but lower VCEO, limiting use in 48V automotive transients; MBT3906DW1T1G trades voltage rating for faster switching, making it suitable for high-frequency digital control rather than robust analog/switching roles.
Availability
BC856ASQ-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and medical device motor control requiring stable component supply, AEC-Q101 compliance, and green manufacturing standards.
Supply support for BC856ASQ-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The BC856ASQ belongs to Diodes' AEC-Q101-qualified small-signal transistor product line, engineered specifically for automotive-grade switching and amplification where thermal stability, voltage margin, and process consistency are critical.
FAQ
What is the maximum safe operating temperature for BC856ASQ-7-F?
The BC856ASQ-7-F has an operating junction temperature range of -55°C to +150°C. Its thermal resistance RθJA is 625°C/W on standard FR4 layout, so sustained operation above +85°C ambient requires derating power dissipation per the curve in Figure 1 of DS38957. At +125°C ambient, maximum usable power drops to ~80mW.
Is BC856ASQ-7-F pin-compatible with BC846AS?
No - BC856ASQ-7-F is a dual PNP transistor in SOT363, while BC846AS is a single NPN transistor in SOT23. They are complementary types (not pin-compatible), intended for pairing in push-pull or differential circuits. Their footprints, pin counts, and polarity differ fundamentally.
Does BC856ASQ-7-F support PPAP documentation for automotive programs?
Yes - BC856ASQ-7-F is PPAP-capable per Diodes Incorporated's quality system. Full PPAP Level 3 documentation, including PSW, control plans, MSA, and dimensional reports, is available upon request for qualified automotive customers through Aetrix Electronics' engineering support team.
How does the SOT363 package affect thermal performance compared to SOT23?
The SOT363 package has higher thermal resistance (RθJA = 625°C/W) than a single SOT23 (typically ~400°C/W) due to shared die pad and dual-die layout. However, its 6-pin configuration allows dual-channel integration without doubling board area, making it thermally adequate for <200mW total dissipation when used within specified derating curves.
BC856ASQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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:
- 650mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 125 @ 2mA, 5V
- Power - Max:
- 200mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
BC856ASQ-7-F FAQ
1.How can I place an order for BC856ASQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC856ASQ-7-F 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 BC856ASQ-7-F reliable?
The price and inventory of BC856ASQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC856ASQ-7-F is usually 5 days.
3.What payment methods are accepted for BC856ASQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC856ASQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC856ASQ-7-F?
BC856ASQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC856ASQ-7-F 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 BC856ASQ-7-F?
For technical support, including BC856ASQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC856ASQ-7-F requirements.
6.How does Aetrix verify that BC856ASQ-7-F is sourced from the original manufacturer or authorized distributors?
All BC856ASQ-7-F 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 BC856ASQ-7-F meets industry standards.
7.What is the process for return or replacement of BC856ASQ-7-F?
All BC856ASQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC856ASQ-7-F, 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 BC856ASQ-7-F part is unused and in its original packaging.
Return procedure for BC856ASQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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