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Nexperia USA Inc. BC56-16PASX
- Part No.:
- BC56-16PASX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
BC56-16PASX.pdf
- Description:
- TRANS NPN 80V 1A DFN2020D-3
- Quantity:
- Payment:
- Shipping:
Inventory:160
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Product details
Overview
BC56-16PASX 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 collector current, and 100–250 hFE at VCE = 2 V, IC = 150 mA. It serves as a high-side switch or MOSFET driver in automotive power management circuits with exposed thermal pad for enhanced PCB heat dissipation.
For engineers reviewing the BC56-16PASX datasheet, BC56-16PASX pinout, BC56-16PASX application, or BC56-16PASX equivalent, this part supports AOI-compatible assembly, operates up to 150 °C junction temperature, and delivers 500 mV VCE(sat) at IC = 500 mA / IB = 50 mA - critical for low-loss switching in battery-powered and linear regulator designs.
Technical Context
This NPN bipolar junction transistor uses silicon planar epitaxial technology with a base-emitter junction optimized for stable DC current gain across −55 °C to +150 °C ambient. Its 2 mm × 2 mm × 0.65 mm ultra-thin DFN package integrates side-wettable flanks for solder joint inspection and a thermally enhanced collector pad directly connected to the die's backside.
The device exhibits 180 MHz fT at VCE = 5 V, IC = 50 mA, enabling reliable operation in moderate-frequency switching applications. Thermal resistance Rth(j-a) ranges from 76 K/W (4-layer PCB, 1 cm² collector pad) to 298 K/W (single-sided FR4), confirming its design intent for thermally constrained SMD layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Maximum safe collector-emitter voltage with base open; enables use in 48 V automotive systems and industrial 24–60 V rails. |
| IC (continuous) | 1 A - Continuous collector current rating; supports load switching up to ~12 W at 12 V with adequate heatsinking. |
| hFE | 100–250 at VCE = 2 V, IC = 150 mA - Tight DC current gain binning ensures predictable base drive requirements in linear and switching modes. |
| VCE(sat) | 500 mV max at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss and self-heating during on-state operation. |
| Ptot | 1.65 W at Tamb ≤ 25 °C on 4-layer FR4 with 1 cm² collector pad - Defines maximum steady-state power handling under defined board conditions. |
| fT | 100–180 MHz - Transition frequency confirms suitability for signal amplification and sub-100 MHz switching control loops. |
| Rth(j-a) | 76–298 K/W - Wide thermal resistance range reflects dependency on PCB copper mass and layout; guides thermal design decisions. |
Pinout & Package
BC56-16PASX is housed in a 3-terminal DFN2020D-3 (SOT1061D) ultra-thin leadless package measuring 2.0 mm × 2.0 mm × 0.65 mm, featuring side-wettable flanks for automated optical inspection and an exposed collector pad on the bottom surface for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; requires ~50 mA base current to saturate 500 mA collector current - defines driver stage sizing. |
| 2 | Emitter (E) | Reference node for biasing; internally connected to substrate; must be tied to system ground or low-side return path. |
| 3 | Collector (C) | Power output terminal; electrically and thermally coupled to exposed bottom pad - must connect to large copper area for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood and ADAS power stages. |
| Side-wettable flanks (SWF) | Enables automated optical inspection of solder joints without X-ray - reduces manufacturing defect escape in high-volume SMT lines. |
| Exposed collector pad | Provides direct thermal path from die to PCB; achieves 76 K/W Rth(j-a) with 4-layer board - improves power density over traditional SOT-23. |
| Two hFE bins | BC56-16PASX offers 100–250 hFE (vs. 63–160 for BC56-10PASX) - allows precise base resistor selection for consistent turn-on behavior. |
| Ultra-thin profile | 0.65 mm max height enables use in space-constrained modules such as portable medical devices and compact motor drivers. |
Applications
| Linear Voltage Regulators | Battery-Driven Devices |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDOs delivering 3.3 V/1 A from 12 V input 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: 500 mV VCE(sat) limits dropout to <1 V at full load, while 80 V rating accommodates load dump transients. |
Use Scenario: Load switch enabling/disabling 5 V rail to USB peripherals in portable diagnostic tools. IC Role / Device Role / Timing Role: High-side switch controlled by microcontroller GPIO through base resistor network. Use Value: 1 A continuous rating supports multiple USB ports; AEC-Q101 qualification ensures robustness in field-deployed equipment. |
| MOSFET Drivers | Power Management |
|
Use Scenario: Level-shifting gate driver for N-channel MOSFET in 24 V BLDC motor phase control. IC Role / Device Role / Timing Role: Fast-switching NPN pull-down stage sinking gate charge during MOSFET turn-off. Use Value: 180 MHz fT and low Cc (6 pF) enable clean 100 ns–1 µs switching transitions without ringing. |
Use Scenario: Current-sense amplifier front-end transistor in smart battery protection ICs for e-bikes. IC Role / Device Role / Timing Role: Precision current mirror element biased at 150 mA for accurate shunt-based sensing. Use Value: Tight hFE bin (100–250) ensures ±5% current matching across temperature, improving SOC estimation accuracy. |
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 |
|---|---|---|---|
| ZTX851 | Higher VCEO (100 V), lower hFE (100–300), TO-92 package - no thermal pad, larger footprint. | Not AOI-compatible; unsuitable for ultra-thin or high-density layouts requiring SWF inspection. | Select when higher breakdown voltage is required and board space/thermal constraints are less critical. |
| BC817-40 | SOT-23 package, same hFE bin (250–630), lower IC (0.5 A), no AEC-Q101 qualification. | Limited to non-automotive consumer applications; lacks thermal pad and side-wettable flanks. | Choose for cost-sensitive, non-automotive designs where 500 mA current and standard reflow are sufficient. |
Compared with ZTX851 and BC817-40, BC56-16PASX uniquely combines AEC-Q101 compliance, side-wettable flanks, and a thermally enhanced DFN package - making it the only option among the three qualified for automotive high-side switching with AOI assurance and 1 A capability.
Availability
BC56-16PASX is available at Aetrix Electronics and suitable for automotive body electronics, portable medical instrumentation, and industrial power management systems requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for BC56-16PASX 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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BC56xPAS series targets automotive and industrial power switching applications demanding AEC-Q101 reliability, ultra-small footprints, and thermally efficient SMD packages - bridging the gap between legacy TO-92 transistors and modern power ICs.
FAQ
Is BC56-16PASX pin-compatible with BC54-16PASX or BC55-16PASX?
No. BC54/55/56-16PASX variants share the same DFN2020D-3 package and pinout (B-E-C), but differ in voltage/current ratings: BC54-16PASX is 60 V/0.5 A, BC55-16PASX is 60 V/1 A, and BC56-16PASX is 80 V/1 A. Electrical substitution requires validation of VCEO and IC margins in the target circuit.
What is the recommended footprint for BC56-16PASX reflow soldering?
The official Nexperia footprint for DFN2020D-3 specifies 0.35 mm wide × 1.1 mm long solder lands for pins 1 and 2 (B and E), and a 2.1 mm × 1.7 mm thermal pad for pin 3 (C), with 0.4 mm solder mask clearance. This layout ensures reliable wetting of side flanks and optimal thermal transfer to the PCB.
Does BC56-16PASX require a base resistor in all applications?
Yes - unlike MOSFETs, this bipolar transistor requires controlled base current to avoid thermal runaway. For 500 mA collector current, a 100 Ω resistor (with 5 V drive) delivers ~45 mA IB, achieving safe saturation. Omitting the resistor risks excessive base current and device failure.
Can BC56-16PASX be used in linear amplifier configurations?
Yes - its 180 MHz fT and stable hFE across temperature support Class-A audio preamplifier and sensor signal conditioning stages. However, power dissipation must remain below Ptot derating curves; at 25 °C ambient, maximum continuous dissipation is 1.65 W with proper PCB copper area.
BC56-16PASX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- 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:
- 63 @ 150mA, 2V
- Power - Max:
- 420 mW
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN2020D-3
BC56-16PASX FAQ
1.How can I place an order for BC56-16PASX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC56-16PASX 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 BC56-16PASX reliable?
The price and inventory of BC56-16PASX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC56-16PASX is usually 5 days.
3.What payment methods are accepted for BC56-16PASX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC56-16PASX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC56-16PASX?
BC56-16PASX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC56-16PASX 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 BC56-16PASX?
For technical support, including BC56-16PASX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC56-16PASX requirements.
6.How does Aetrix verify that BC56-16PASX is sourced from the original manufacturer or authorized distributors?
All BC56-16PASX 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 BC56-16PASX meets industry standards.
7.What is the process for return or replacement of BC56-16PASX?
All BC56-16PASX units undergo pre-shipment inspection (PSI). If there is an issue with BC56-16PASX, 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 BC56-16PASX part is unused and in its original packaging.
Return procedure for BC56-16PASX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC56-16PASX Tags
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