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Nexperia USA Inc. BC56-16PAS-QX
- Part No.:
- BC56-16PAS-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
BC56-16PAS-QX.pdf
- Description:
- TRANS NPN 80V 1A DFN2020D-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,165
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Product details
Overview
BC56-16PAS-QX from Nexperia is an AEC-Q101-qualified NPN medium power transistor in a DFN2020D-3 (SOT1061D) leadless package, rated for 80 V VCEO, 1 A continuous IC, and 100–250 hFE at VCE = 2 V, IC = 150 mA. It delivers high thermal performance via exposed collector pad and supports automotive-grade linear voltage regulation and MOSFET driver stages.
For engineers reviewing the BC56-16PAS-QX datasheet, BC56-16PAS-QX pinout, BC56-16PAS-QX application, or BC56-16PAS-QX equivalent, this page provides verified pin functions, thermal derating curves, AOI-compatible side-wettable flanks, AEC-Q101 qualification status, and direct substitution guidance against BC56-10PAS-QX and BC56PAS-QX.
Technical Context
This transistor operates as a medium-power NPN switch or linear amplifier with base-controlled current gain, optimized for stable DC biasing and pulsed switching up to 2 A peak (tp ≤ 1 ms). Its DFN2020D-3 package integrates an exposed collector pad for low Rth(j-sp) (20 K/W) and solderable side flanks enabling automated optical inspection.
It features two defined hFE bins: BC56-16PAS-QX (100–250) and BC56-10PAS-QX (63–160), both sharing identical VCEO = 80 V, VCBO = 100 V, and Tj = 150 °C ratings. Thermal resistance varies from 76 K/W (4-layer PCB + 1 cm² collector pad) to 298 K/W (standard FR4 single-layer).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Maximum safe collector-emitter voltage under open-base condition; defines high-side switch headroom in 24 V/48 V automotive systems. |
| IC | 1 A continuous - Sustained collector current capability at Tamb ≤ 25 °C; supports battery-driven load switching without forced cooling. |
| hFE | 100–250 at VCE = 2 V, IC = 150 mA - Tight DC current gain bin enables predictable base drive sizing in linear regulators and driver circuits. |
| Ptot | 1.65 W on 4-layer FR4 with 1 cm² collector pad - Enables >1 W dissipation without heatsink in space-constrained automotive modules. |
| Rth(j-sp) | 20 K/W - Low junction-to-solder-point thermal resistance confirms efficient heat transfer directly into PCB copper, critical for reliability in sealed enclosures. |
| fT | 100–180 MHz - Transition frequency supports stable operation up to ~100 MHz in RF-coupled pre-driver stages or fast-switching control loops. |
| VCE(sat) | ≤ 500 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss in high-duty-cycle switching applications like LED drivers. |
Pinout & Package
DFN2020D-3 (SOT1061D) is a 2 mm × 2 mm × 0.65 mm ultra-thin leadless package with side-wettable flanks, exposed collector pad on underside, and three terminals arranged in single row. Optimized for reflow soldering and AOI verification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control input node; requires current-limited drive (max IB = 0.3 A) to avoid secondary breakdown during switching transients. |
| 2 | Emitter (E) | Reference node for bias network; connected to ground or low-side return path; not thermally enhanced - relies on PCB copper for heat spreading. |
| 3 | Collector (C) | Power output node; electrically and thermally tied to exposed metal pad beneath package - must be routed to ≥1 cm² copper area for rated Ptot. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Qualified per Stress Test Qualification for Discrete Semiconductors - enables use in engine control units, body electronics, and ADAS power stages without additional component-level validation. |
| Side-wettable flanks (SWF) | Visible solder fillets on package edges allow 100% automated optical inspection of solder joint integrity - eliminates X-ray requirement in high-volume automotive SMT lines. |
| Exposed collector pad | Direct thermal path from die to PCB copper reduces Rth(j-a) to 76 K/W - enables 2.2× higher power handling vs. standard SOT23 at same board area. |
| Two hFE bins | BC56-16PAS-QX (100–250) and BC56-10PAS-QX (63–160) - allows precise gain matching across production batches for feedback loop stability in voltage regulators. |
| Ultra-thin profile | 0.65 mm max height - fits under 1 mm shields and enables double-sided assembly in compact telematics and infotainment modules. |
Applications
| Linear Voltage Regulators | Battery-Driven Devices |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDOs powering microcontrollers in automotive body control modules. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via emitter-follower configuration with feedback to base. Use Value: 80 V VCEO accommodates load-dump transients; 100–250 hFE ensures stable regulation across temperature with minimal base drive overhead. |
Use Scenario: Load switch for USB-C PD-powered portable test equipment with 12 V Li-ion input. IC Role / Device Role / Timing Role: Medium-power discrete switch enabling ON/OFF control of downstream 5 V/3.3 V rails. Use Value: 1 A continuous rating supports >5 W loads; side-wettable flanks guarantee solder joint reliability in field-deployed handheld units. |
| MOSFET Drivers | High-Side Switches |
|
Use Scenario: Gate driver stage for N-channel power MOSFETs in 24 V industrial motor controllers. IC Role / Device Role / Timing Role: Current-amplifying stage converting logic-level PWM into high-current gate charge/discharge pulses. Use Value: fT ≥ 100 MHz ensures <100 ns rise/fall times; low VCE(sat) minimizes driver-stage conduction loss during dead-time intervals. |
Use Scenario: High-side switch for 12 V lighting circuits in commercial vehicle cab modules. IC Role / Device Role / Timing Role: NPN configured in emitter-follower topology to source current to lamp loads referenced to battery positive. Use Value: 80 V rating withstands ISO 7637-2 pulse 5a (120 V); exposed collector pad sustains 1.65 W dissipation during sustained 1 A lamp current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC56-10PAS-QX | hFE = 63–160 (vs. 100–250); otherwise identical VCEO, IC, package, and thermal specs. | Suitable where lower gain suffices - e.g., fixed-gain amplifiers or saturated switches with ample base drive margin. | Select when tighter hFE tolerance is unnecessary and cost optimization is prioritized over gain headroom. |
| BC56PAS-QX | Unbinned hFE = 63–250; no guaranteed minimum; identical limiting values and package. | Appropriate for non-critical signal conditioning or generic switching where gain variation is acceptable. | Choose only for prototyping or non-automotive designs where AEC-Q101 is not required and gain spread is tolerable. |
Compared with BC56-10PAS-QX and BC56PAS-QX, BC56-16PAS-QX offers the highest guaranteed hFE floor (100), enabling robust base drive design in automotive linear regulators and reducing sensitivity to temperature-induced gain drift.
Availability
BC56-16PAS-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial battery management systems, and consumer portable power tools requiring stable component supply and AEC-Q101 compliance.
Supply support for BC56-16PAS-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 mobile markets.
BC56-16PAS-QX belongs to the BC56xPAS-Q series - a family of AEC-Q101-qualified NPN transistors engineered specifically for automotive power management, including linear regulators, driver stages, and high-side switching in harsh-environment ECUs.
FAQ
Is BC56-16PAS-QX pin-compatible with BC847 or MMBT3904?
No. BC56-16PAS-QX uses DFN2020D-3 (SOT1061D) with pin 1=Base, 2=Emitter, 3=Collector. BC847 and MMBT3904 use SOT23 with pin 1=Emitter, 2=Base, 3=Collector. Physical layout, thermal pad presence, and soldering requirements differ significantly - direct replacement requires PCB redesign.
What is the maximum allowable PCB copper area for the exposed collector pad?
The datasheet specifies performance data for collector pads of 1 cm² and 6 cm² on FR4. No upper limit is defined, but thermal resistance improvement plateaus beyond ~6 cm². For production use, follow the 1 cm² footprint shown in Figure 12 (sot1061d_fr) to ensure compatibility with standard reflow profiles and AOI algorithms.
Does BC56-16PAS-QX support pulsed operation above 1 A?
Yes. It supports ICM = 2 A for single pulses ≤ 1 ms (duty cycle ≤ 0.02), validated per IEC 60134. This enables short-duration surge handling in motor stall protection or inrush limiting - provided average power remains within Ptot derating limits for the specific PCB construction.
Can BC56-16PAS-QX be used in Class AB audio amplifier output stages?
It is not recommended. While fT ≥ 100 MHz and hFE support mid-band amplification, the device lacks specified linearity parameters (e.g., harmonic distortion, SOA curves at low VCE), and its SOA is optimized for switching, not linear analog operation. Use dedicated audio transistors like BC546 or ZTX653 instead.
BC56-16PAS-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC56PAS-Q
- Package/Case:
- 3-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 80 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 500mA, 2V
- Power - Max:
- 420 mW
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN2020D-3
BC56-16PAS-QX FAQ
1.How can I place an order for BC56-16PAS-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC56-16PAS-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 BC56-16PAS-QX reliable?
The price and inventory of BC56-16PAS-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC56-16PAS-QX is usually 5 days.
3.What payment methods are accepted for BC56-16PAS-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC56-16PAS-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC56-16PAS-QX?
BC56-16PAS-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC56-16PAS-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 BC56-16PAS-QX?
For technical support, including BC56-16PAS-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC56-16PAS-QX requirements.
6.How does Aetrix verify that BC56-16PAS-QX is sourced from the original manufacturer or authorized distributors?
All BC56-16PAS-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 BC56-16PAS-QX meets industry standards.
7.What is the process for return or replacement of BC56-16PAS-QX?
All BC56-16PAS-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC56-16PAS-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 BC56-16PAS-QX part is unused and in its original packaging.
Return procedure for BC56-16PAS-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC56-16PAS-QX Tags
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MMBT3906LT1G
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MMBT3904LT1G
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MMBT3906-7-F
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MMBT3904-TP
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MMBT2222A-7-F
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.
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MMBTA06LT1G
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