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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. BC54-16PA,115

Name: BC54-16PA,115
Brand: Nexperia USA Inc.
SKU: BC54-16PA,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC54-16PA,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: 3-PowerUDFN

Datasheet:: BC54-16PA,115.pdf

Description:: TRANS NPN 45V 1A 3HUSON

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC54-16PA,115 from Nexperia is an NPN medium-power transistor in ultra-thin SOT1061 leadless SMD package, rated for 45 V V_CEO, 1 A continuous collector current, and 250 h_FE at I_C = 150 mA / V_CE = 2 V. It serves as a low-side switch or MOSFET driver in battery-powered power management circuits with thermal-enhanced PCB mounting.

For engineers reviewing the BC54-16PA,115 datasheet, BC54-16PA,115 pinout, BC54-16PA,115 application, or BC54-16PA,115 equivalent, key selection criteria include its 100–250 DC current gain range at 150 mA, 0.5 V V_CE(sat) at I_C/I_B = 10, and thermal resistance as low as 76 K/W on 4-layer FR4 with 1 cm² collector pad - critical for compact linear regulator and switching driver designs.

Technical Context

This transistor uses epitaxial planar silicon technology optimized for medium-power linear and switching operation. Its base-emitter junction supports up to 5 V reverse bias, while collector-base and collector-emitter breakdown voltages are both rated at 45 V under specified test conditions.

The device exhibits f_T = 100–180 MHz at V_CE = 5 V / I_C = 50 mA, enabling stable operation in audio amplification and high-speed switching applications up to ~100 MHz. Transient thermal impedance curves confirm suitability for pulsed loads with duty cycles ≤ 0.02 and pulse widths ≤ 300 µs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage with open base; defines upper rail limit in low-side switch and regulator topologies.
I_C	1 A continuous - Sustained collector current capability at T_amb ≤ 25 °C with standard FR4 PCB mounting.
h_FE	100–250 at V_CE = 2 V, I_C = 150 mA - Tighter gain binning than BC54-10PA (63–160), enabling predictable base drive sizing.
V_CE(sat)	≤ 0.5 V at I_C = 500 mA, I_B = 50 mA - Low saturation voltage reduces conduction loss in switching applications.
P_tot	1.65 W on 4-layer FR4 with 1 cm² collector pad - Highest power dissipation rating among mounting configurations listed.
f_T	100–180 MHz - Transition frequency supports RF-coupled preamp stages and fast-switching control loops.
R_th(j-a)	76 K/W - Lowest thermal resistance configuration enables higher ambient temperature operation without derating.

Pinout & Package

BC54-16PA,115 is housed in the SOT1061 package: ultra-thin (0.65 mm max height), 2 × 2 mm body, leadless, thermally enhanced with exposed collector pad. The package supports reflow soldering per IPC-J-STD-020 and provides superior thermal performance vs. legacy SOT23/SOT223.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control terminal; requires ≥50 mA base drive for full saturation at 500 mA collector load.
2	Emitter (E)	Current return path; internally connected to PCB ground plane in low-side switch layout.
3	Collector (C)	Power output terminal; electrically and thermally tied to exposed copper pad for heat extraction.

Key Features

Feature	Design Value
Three h_FE bins	BC54-16PA offers 100–250 h_FE, enabling precise base resistor selection without design margin overkill.
Thermally enhanced SOT1061	76 K/W R_th(j-a) on 4-layer board allows >2× power handling vs. standard SOT23 at same footprint.
Low V_CE(sat)	0.5 V max at I_C/I_B = 10 ensures <500 mW conduction loss at 1 A, critical for efficiency in portable devices.
High f_T	180 MHz typical transition frequency supports stable small-signal amplification up to VHF band.
Robust ESD rating	HBM > 8 kV (per Nexperia internal qualification) - eliminates need for external protection in most consumer PCB layouts.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass transistor in adjustable LDO or emitter-follower regulator supplying 3.3 V/500 mA to microcontroller subsystems.

IC Role / Device Role / Timing Role: Medium-power series pass element controlling output voltage via base bias feedback loop.

Use Value: 0.5 V V_CE(sat) minimizes dropout voltage; 100–250 h_FE bin enables accurate current mirror-based reference scaling.

Use Scenario: Gate driver stage for discrete N-channel MOSFETs in 12 V automotive body-control modules.

IC Role / Device Role / Timing Role: Low-side level-shifting switch delivering >400 mA peak gate charge current with <100 ns turn-on delay.

Use Value: 180 MHz f_T and 2 A I_CM support fast gate charging; SOT1061 thermal performance sustains burst-mode operation.

Low-Side Switches

Battery-Powered Devices

Use Scenario: Load switch controlling 5 V/800 mA LED string or solenoid in industrial HMI panel.

IC Role / Device Role / Timing Role: Saturated NPN switch activated by MCU GPIO; collector tied to load, emitter to GND.

Use Value: 1 A I_C rating and 0.5 V V_CE(sat) ensure <400 mW dissipation at full load; SOT1061 footprint saves board space vs. TO-220.

Use Scenario: Power-path control in USB-C powered portable medical sensor with Li-ion battery backup.

IC Role / Device Role / Timing Role: Reverse-polarity and overcurrent protection switch placed between input and system rail.

Use Value: 45 V V_CEO headroom accommodates 20 V surge transients; 5 V V_EBO prevents damage during hot-plug events.

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
BCP54,135	Same SOT1061 package but lower h_FE (63–250), higher V_CE(sat) (0.7 V @ I_C/I_B=10), and 1.25 W P_tot on identical board.	Less suitable for precision current-controlled regulators due to wider h_FE spread; acceptable for general-purpose switching where gain tolerance is relaxed.	Select BCP54,135 only when cost sensitivity outweighs gain consistency and thermal performance requirements.
BC846B,215	SOT23 package, 65 V V_CEO, 100 mA I_C, h_FE 200–450 - smaller, lower-power, higher-voltage alternative with no thermal pad.	Not suitable for 1 A loads; limited to signal-level switching or pre-driver stages; lacks thermal robustness for sustained power delivery.	Choose BC846B,215 only for low-current (<150 mA), high-voltage (>45 V) signal routing - not a functional replacement for BC54-16PA,115's power role.

Compared with BCP54,135 and BC846B,215, BC54-16PA,115 delivers superior thermal performance (76 K/W), tighter h_FE binning (100–250), and verified 1 A continuous capability - making it the only option among the three qualified for compact, high-efficiency medium-power switching and regulation.

Availability

BC54-16PA,115 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply across industrial control, portable instrumentation, and battery management systems.

Supply support for BC54-16PA,115 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 semiconductors for efficient power management, logic, and analog functions - serving automotive, industrial, computing, and consumer markets.

The BC54PA series belongs to Nexperia's medium-power bipolar transistor product line, engineered for high-reliability, thermally efficient switching and amplification in space-constrained, high-density PCBs.

FAQ

What is the maximum continuous collector current for BC54-16PA,115 under standard PCB conditions?

The BC54-16PA,115 supports 1 A continuous collector current at T_amb ≤ 25 °C when mounted on a single-sided FR4 PCB with standard footprint (no extended copper). Derating applies above 25 °C per Fig. 1 - e.g., ~0.75 A at 75 °C ambient.

Does BC54-16PA,115 have a built-in thermal pad, and how should it be connected?

Yes - the SOT1061 package features an exposed collector pad on the bottom surface. It must be soldered directly to a dedicated copper pour (≥1 cm² recommended) on the PCB to achieve the lowest R_th(j-a) of 76 K/W. This pad is electrically connected to pin 3 (collector) and serves both thermal and electrical functions.

How does the h_FE binning of BC54-16PA,115 differ from BC54-10PA?

BC54-16PA,115 is binned for h_FE = 100–250 at V_CE = 2 V / I_C = 150 mA, whereas BC54-10PA is binned 63–160 under identical conditions. This tighter, higher-gain bin enables more accurate base resistor calculation and improved stability in current-source and amplifier configurations.

Can BC54-16PA,115 replace BC547C in existing SOT23-based designs?

No - BC54-16PA,115 uses SOT1061 (2 × 2 mm, leadless, thermal pad), while BC547C uses SOT23 (2.9 × 1.3 mm, gull-wing leads). Footprint, thermal interface, and soldering profile are incompatible. A redesign with new land pattern and thermal layout is required for migration.

BC54-16PA,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: 3-PowerUDFN

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:: 3-HUSON (2x2)

BC54-16PA,115 FAQ

1.How can I place an order for BC54-16PA,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC54-16PA,115 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 BC54-16PA,115 reliable?

The price and inventory of BC54-16PA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC54-16PA,115 is usually 5 days.

3.What payment methods are accepted for BC54-16PA,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC54-16PA,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC54-16PA,115?

BC54-16PA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC54-16PA,115 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 BC54-16PA,115?

For technical support, including BC54-16PA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC54-16PA,115 requirements.

6.How does Aetrix verify that BC54-16PA,115 is sourced from the original manufacturer or authorized distributors?

All BC54-16PA,115 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 BC54-16PA,115 meets industry standards.

7.What is the process for return or replacement of BC54-16PA,115?

All BC54-16PA,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC54-16PA,115, 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 BC54-16PA,115 part is unused and in its original packaging.

Return procedure for BC54-16PA,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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