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Nexperia USA Inc. BC54-16PAS-QX
- Part No.:
- BC54-16PAS-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
BC54-16PAS-QX.pdf
- Description:
- TRANS NPN 45V 1A DFN2020D-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BC54-16PAS-QX from Nexperia is an AEC-Q101-qualified NPN medium power transistor in a DFN2020D-3 (SOT1061D) leadless package, rated for 45 V VCEO, 1 A continuous IC, and 100–250 hFE at VCE = 2 V, IC = 150 mA. It delivers low VCE(sat) ≤ 500 mV at IC = 500 mA / IB = 50 mA and supports automotive-grade thermal performance with Rth(j-a) as low as 76 K/W on 4-layer PCBs. Used in high-side switches and MOSFET drivers where compact size and AOI-compatible side-wettable flanks are critical.
For engineers reviewing the BC54-16PAS-QX datasheet, BC54-16PAS-QX pinout, BC54-16PAS-QX application, or BC54-16PAS-QX equivalent, this page provides verified pin functions, thermal derating curves, AEC-Q101 qualification status, hFE binning details (CF marking), and direct comparison to BC54-10PAS-QX and BC54PAS-QX for current gain selection in linear regulators and battery-driven devices.
Technical Context
This transistor operates as a medium-power NPN switch or linear amplifier with fixed emitter-base and collector-base junction structures optimized for stable DC current gain across −55 °C to 150 °C ambient. Its DFN2020D-3 package integrates exposed collector pad for direct thermal conduction and side-wettable flanks enabling automated optical inspection of solder joints.
It features pulsed ICM = 2 A (tp ≤ 1 ms), VEBO = 5 V, and fT = 100–180 MHz - confirming suitability for switching speeds up to several hundred kHz in power management stages while maintaining linearity in analog bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage under open-base conditions; defines upper rail limit in high-side switch designs. |
| IC (continuous) | 1 A - Sustained collector current capability; enables direct drive of small solenoids or logic-level MOSFET gates without external buffering. |
| hFE | 100–250 at VCE = 2 V, IC = 150 mA - Tight DC current gain bin ensures predictable base drive requirements in linear regulator error amplifiers. |
| VCE(sat) | ≤ 500 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss and self-heating in battery-powered load switches. |
| Rth(j-a) | 76 K/W (4-layer PCB + 1 cm² collector pad) - Enables >1.1 W continuous dissipation at Tamb = 70 °C without forced cooling. |
| fT | 100–180 MHz - Supports stable operation in kHz-range PWM control loops and RF-coupled pre-driver stages. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors including temperature cycling, HTRB, and ESD. |
Pinout & Package
DFN2020D-3 (SOT1061D) is a 2 mm × 2 mm × 0.65 mm ultra-thin leadless plastic package with exposed collector pad and side-wettable flanks for AOI-compatible reflow soldering. Dimensions comply with JEDEC MO-372.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; requires 50 mA base drive for full 500 mA collector conduction; low-impedance path to internal emitter-base junction. |
| 2 | Emitter (E) | Current return path; internally connected to substrate; must be tied to system ground or low-side reference in high-side configurations. |
| 3 | Collector (C) | Main power output terminal; electrically and thermally connected to exposed bottom pad; routed to PCB copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Exposed collector thermal pad | Reduces Rth(j-a) by up to 60% vs standard SOT-23; enables 1.65 W Ptot on 4-layer FR4 with 1 cm² mounting area. |
| Side-wettable flanks (SWF) | Enables 100% automated optical inspection of solder fillets without X-ray; eliminates hidden voids in production assembly. |
| AEC-Q101 qualification | Validated for automotive underhood environments: 1000-cycle temperature cycling (−40 °C to +125 °C), HTRB at 150 °C/1000 hrs, and ±8 kV HBM ESD. |
| Two hFE bins | BC54-16PAS-QX (CF mark): hFE = 100–250; BC54-10PAS-QX (CE mark): hFE = 63–160 - allows precise gain matching in feedback networks. |
Applications
| Linear Voltage Regulators | Battery-Driven Devices |
|---|---|
Use Scenario: Error amplifier stage in adjustable LDOs delivering 3.3 V/1 A to microcontroller cores. IC Role / Device Role / Timing Role: NPN pass transistor controlling output voltage via feedback loop; operates in linear region with <100 mV headroom. Use Value: Low VCE(sat) and tight hFE bin ensure stable regulation across load steps and temperature drift without external compensation. |
Use Scenario: Load switch enabling/disabling power to Bluetooth LE modules in portable medical sensors. IC Role / Device Role / Timing Role: High-side switch controlled by MCU GPIO; toggled at ≤10 Hz during sleep/wake cycles. Use Value: 1 A rating and AEC-Q101 reliability support 10-year field life in sealed battery packs with no derating required. |
| MOSFET Drivers | Power Management |
Use Scenario: Gate driver for 30 V N-channel MOSFETs in DC-DC buck converters powering automotive infotainment displays. IC Role / Device Role / Timing Role: Current-source driver stage providing fast turn-on gate charge injection (IB = 50 mA pulse). Use Value: fT ≥ 100 MHz and low Cc = 6 pF minimize propagation delay and ringing during 500 kHz switching transitions. |
Use Scenario: Overcurrent protection circuit sensing battery discharge current and triggering shutdown in e-bike controllers. IC Role / Device Role / Timing Role: Current-sense amplifier input stage converting shunt voltage to scaled collector current for comparator input. Use Value: Stable hFE over −40 °C to +125 °C ensures consistent trip threshold accuracy across operating temperature range. |
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 |
|---|---|---|---|
| BC54-10PAS-QX | hFE = 63–160 (CE marking); otherwise identical VCEO, IC, package, and qualification. | Lower gain reduces base drive sensitivity in high-precision current mirrors but increases stability margin in feedback loops. | Select when tighter hFE tolerance is not required and cost optimization is prioritized. |
| BC54PAS-QX | Unbinned hFE = 63–250 (CD marking); same electrical specs and thermal performance. | Wider gain spread increases design margining effort for base resistor selection in production. | Choose only for prototyping or non-critical signal conditioning where gain variation is acceptable. |
Compared with BC54-10PAS-QX and BC54PAS-QX, BC54-16PAS-QX offers the highest minimum hFE (100), reducing base current variance in production and simplifying drive circuit design for automotive MOSFET gate control and linear regulator stability.
Availability
BC54-16PAS-QX is available at Aetrix Electronics and suitable for automotive power management, battery-powered medical wearables, and industrial motor control systems requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for BC54-16PAS-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-enhancing components, with leadership in logic, discrete, and MOSFET technologies serving automotive, industrial, and mobile markets.
The BC54xPAS-Q series targets automotive-qualified medium-power switching and amplification, designed specifically to replace legacy SOT-23 transistors with enhanced thermal performance, AOI compatibility, and AEC-Q101 reliability in space-constrained ECUs and ADAS subsystems.
FAQ
What does the 'CF' marking on BC54-16PAS-QX indicate?
The 'CF' top-side laser marking identifies the BC54-16PAS-QX as the high-gain bin variant with hFE = 100–250 measured at VCE = 2 V and IC = 150 mA. This binning enables precise base resistor selection in feedback circuits and reduces gain-related drift in temperature-sensitive applications such as automotive voltage references.
Can BC54-16PAS-QX replace BC547B in existing SOT-23 designs?
No - BC54-16PAS-QX uses DFN2020D-3 (SOT1061D) packaging with different footprint, thermal pad layout, and pin order (B-E-C vs B-E-C but rotated). Direct replacement requires PCB redesign, solder mask revision, and requalification of thermal performance due to its exposed collector pad and side-wettable flanks.
How does the DFN2020D-3 package improve thermal performance over SOT-23?
The DFN2020D-3 package reduces Rth(j-a) from ~298 K/W (SOT-23, single-layer PCB) to 76 K/W (4-layer PCB + 1 cm² collector pad) by routing heat directly through the exposed collector pad into PCB copper. This enables 2.2× higher continuous power dissipation at 70 °C ambient without heatsinks or airflow.
Is BC54-16PAS-QX suitable for Class D audio amplifier output stages?
No - while its fT exceeds 100 MHz, BC54-16PAS-QX is not characterized for safe operating area (SOA) in switching mode at high voltage/current combinations typical of Class D outputs. Its design targets linear regulation and gate driving, not high-speed hard-switching with reactive loads.
BC54-16PAS-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC54xPAS-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):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 150mA, 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
BC54-16PAS-QX FAQ
1.How can I place an order for BC54-16PAS-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC54-16PAS-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 BC54-16PAS-QX reliable?
The price and inventory of BC54-16PAS-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC54-16PAS-QX is usually 5 days.
3.What payment methods are accepted for BC54-16PAS-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC54-16PAS-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC54-16PAS-QX?
BC54-16PAS-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC54-16PAS-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 BC54-16PAS-QX?
For technical support, including BC54-16PAS-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC54-16PAS-QX requirements.
6.How does Aetrix verify that BC54-16PAS-QX is sourced from the original manufacturer or authorized distributors?
All BC54-16PAS-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 BC54-16PAS-QX meets industry standards.
7.What is the process for return or replacement of BC54-16PAS-QX?
All BC54-16PAS-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC54-16PAS-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 BC54-16PAS-QX part is unused and in its original packaging.
Return procedure for BC54-16PAS-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC54-16PAS-QX Tags
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