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Nexperia USA Inc. BC54-10PASX
- Part No.:
- BC54-10PASX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
BC54-10PASX.pdf
- Description:
- TRANS NPN 45V 1A DFN2020D-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,431
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Product details
Overview
BC54-10PASX from Nexperia is a 45 V, 1 A NPN medium power transistor in an ultra-thin DFN2020D-3 (SOT1061D) leadless SMD package, designed for high-side switching and MOSFET driver stages in compact power management circuits, with hFE of 63–160 at IC = 150 mA, VCE = 2 V, and Tamb = 25 °C.
For engineers reviewing the BC54-10PASX datasheet, BC54-10PASX pinout, BC54-10PASX application, or BC54-10PASX equivalent, this device supports AOI-compatible assembly, delivers 0.5 V VCE(sat) at IC/IB = 10, features side-wettable flanks for solder joint inspection, and offers thermal resistance as low as 76 K/W on 4-layer FR4 with collector pad.
Technical Context
This NPN bipolar junction transistor operates in linear and saturated switching modes, with base-emitter turn-on voltage ≤1 V and transition frequency fT ≥100 MHz (typ. 180 MHz) at VCE = 5 V, IC = 50 mA. Its current gain is binned to 63–160, enabling predictable drive capability in discrete amplifier and switch stages.
The DFN2020D-3 package integrates exposed collector pad for thermal conduction and electrical grounding, supporting power dissipation up to 1.65 W under optimized PCB layout. Thermal impedance Zth(j-a) drops below 100 K/W for pulse durations >10 ms when mounted on 4-layer FR4 with 1 cm² collector pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in high-side switch designs. |
| IC | 1 A continuous - Sustained collector current rating; enables direct driving of small-signal MOSFET gates or LED loads. |
| hFE | 63–160 - DC current gain range at VCE = 2 V, IC = 150 mA; ensures stable base drive sizing across temperature and unit variance. |
| VCE(sat) | ≤500 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss in switching applications. |
| Rth(j-a) | 76 K/W - Junction-to-ambient thermal resistance on 4-layer FR4 with 1 cm² collector pad; enables reliable operation at 1 W dissipation up to 75 °C ambient. |
| fT | 100–180 MHz - Transition frequency confirms suitability for audio-frequency amplification and fast-switching gate drive up to ~10 MHz. |
| Cc | 6 pF - Collector capacitance at VCB = 10 V; limits high-frequency Miller effect in switching nodes. |
Pinout & Package
BC54-10PASX uses the DFN2020D-3 (SOT1061D) ultra-thin leadless package: 2 mm × 2 mm × 0.65 mm body, 1.3 mm pitch, side-wettable flanks for AOI, and exposed collector pad for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB ≤ 0.3 A per absolute max rating. |
| 2 | Emitter (E) | Reference terminal for biasing; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | High-current output node; electrically and thermally tied to exposed bottom pad for enhanced power handling and heat spreading. |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints without X-ray, improving manufacturing yield and traceability. |
| Exposed collector pad | Provides dual-path thermal conduction (via PCB copper) and low-impedance electrical connection for reduced RDS(on)-equivalent losses. |
| Two hFE bins | BC54-10PASX (63–160) and BC54-16PASX (100–250) allow precise gain matching for differential pairs or feedback loop stability. |
| Ultra-thin profile | 0.65 mm max height enables use in space-constrained portable and wearable electronics where Z-height is critical. |
Applications
| Linear Voltage Regulators | Battery-Driven Devices |
|---|---|
Use Scenario: Pass transistor in adjustable LDOs delivering up to 1 A load current with <1 % line regulation. IC Role / Device Role / Timing Role: NPN series pass element controlling output voltage via base bias from error amplifier. Use Value: Low VCE(sat) reduces dropout voltage; high hFE minimizes base drive current, extending battery life. |
Use Scenario: Load switch enabling/disabling power to Bluetooth modules or sensors in coin-cell-powered IoT nodes. IC Role / Device Role / Timing Role: High-side switch controlled by microcontroller GPIO, isolating downstream circuitry during sleep. Use Value: Side-wettable flanks ensure reliable reflow in miniaturized PCBs; 1.65 W Ptot supports intermittent 500 mA bursts. |
| MOSFET Drivers | Power Management |
Use Scenario: Discrete totem-pole stage driving N-channel power MOSFET gates in DC-DC buck converters. IC Role / Device Role / Timing Role: Fast-switching NPN pull-down element complementing PNP pull-up in gate driver IC alternatives. Use Value: fT ≥100 MHz ensures sub-100 ns switching transitions; low Cc prevents gate oscillation. |
Use Scenario: Current-sense amplifier front-end or enable logic in multi-rail PMIC subsystems for industrial controllers. IC Role / Device Role / Timing Role: Discrete current amplifier converting shunt voltage to higher-level signal for ADC input or comparator threshold. Use Value: Stable hFE binning enables accurate gain calibration; thermal robustness supports 85 °C ambient operation. |
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 |
|---|---|---|---|
| BC54-16PASX | Higher hFE bin (100–250 vs. 63–160); identical package, voltage, and current ratings. | Better suited for low-base-drive applications like high-gain preamplifiers or low-power sensor interfaces. | Select when tighter gain control or lower IB is required; not drop-in for circuits relying on mid-range hFE stability. |
| MMBT3904DW | SOT-363 dual package; single-device hFE 100–300; VCEO = 40 V; IC = 200 mA - lower current and voltage capability. | Limited to low-power signal switching; unsuitable for 1 A load or 45 V rail applications. | Use only in space-constrained dual-transistor layouts where current demand is ≤200 mA and voltage ≤40 V. |
Compared with BC54-10PASX, BC54-16PASX offers higher gain for reduced base drive overhead, while MMBT3904DW trades current/voltage headroom for dual-device integration-neither matches BC54-10PASX's 1 A/45 V/DFN2020D combination.
Availability
BC54-10PASX is available at Aetrix Electronics and suitable for linear voltage regulators, battery-driven devices, and MOSFET drivers requiring stable component supply, consistent parametric binning, and AOI-compatible packaging.
Supply support for BC54-10PASX 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 for automotive, industrial, and consumer markets.
The BC54xPAS series targets compact, thermally demanding power control applications-designed specifically for high-density SMT assembly, thermal reliability on thin PCBs, and AOI-ready manufacturability.
FAQ
What is the maximum allowable base current for BC54-10PASX?
The absolute maximum base current is 0.3 A, as specified in the Limiting Values table. Exceeding this risks metallization failure or bond wire damage. For typical switching operation at IC = 500 mA, IB = 50 mA is used-well within safe margin and ensuring robust saturation.
Can BC54-10PASX be used in automotive applications?
No-this part is explicitly marked non-automotive qualified per the revision history. It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. Automotive alternatives must be selected from Nexperia's -Q qualified portfolio.
How does the DFN2020D-3 package improve thermal performance over SOT-23?
DFN2020D-3 provides an exposed collector pad that directly contacts the PCB copper, reducing Rth(j-a) to 76 K/W (vs. ~200 K/W for standard SOT-23). This allows 2.2× higher continuous power dissipation under identical board conditions.
Is the marking code 'CE' unique to BC54-10PASX?
Yes-per Table 4, 'CE' is the dedicated top-side laser marking for BC54-10PASX. BC54PAS uses 'CD', BC54-16PAS uses 'CF', enabling visual and automated identification during assembly and traceability audits.
BC54-10PASX 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):
- 45 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
BC54-10PASX FAQ
1.How can I place an order for BC54-10PASX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC54-10PASX 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 BC54-10PASX reliable?
The price and inventory of BC54-10PASX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC54-10PASX is usually 5 days.
3.What payment methods are accepted for BC54-10PASX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC54-10PASX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC54-10PASX?
BC54-10PASX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC54-10PASX 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 BC54-10PASX?
For technical support, including BC54-10PASX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC54-10PASX requirements.
6.How does Aetrix verify that BC54-10PASX is sourced from the original manufacturer or authorized distributors?
All BC54-10PASX 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 BC54-10PASX meets industry standards.
7.What is the process for return or replacement of BC54-10PASX?
All BC54-10PASX units undergo pre-shipment inspection (PSI). If there is an issue with BC54-10PASX, 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 BC54-10PASX part is unused and in its original packaging.
Return procedure for BC54-10PASX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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