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

Nexperia USA Inc. BC54-10PA,115

Name: BC54-10PA,115
Brand: Nexperia USA Inc.
SKU: BC54-10PA,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC54-10PA,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: 3-PowerUDFN

Datasheet:: BC54-10PA,115.pdf

Description:: TRANS NPN 45V 1A 3HUSON

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC54-10PA,115 from Nexperia is an NPN medium power transistor in a leadless SOT1061 package, rated for 45 V V_CEO, 1 A continuous collector current, and 160 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 BC54-10PA,115 datasheet, BC54-10PA,115 pinout, BC54-10PA,115 application, or BC54-10PA,115 equivalent, key selection criteria include its 45 V breakdown rating, 1 A DC current capability, pulsed 2 A peak handling, 0.5 V V_CE(sat) at I_C/I_B = 10, and SOT1061 thermal performance on FR4 PCBs.

Technical Context

This transistor operates as a linear or switching NPN device with fixed gain binning (63–160), optimized for stable DC current amplification and low-saturation switching in compact power stages. Its base-emitter junction supports up to 5 V reverse bias, and collector-base withstands 45 V under open-emitter conditions.

The SOT1061 package enables high thermal efficiency via exposed collector pad soldering-power dissipation reaches 1.65 W on 4-layer FR4 with 1 cm² collector pad, while R_th(j-a) drops to 76 K/W under that condition. Transient thermal impedance curves confirm robust pulse-handling capability up to 1 ms.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in low-side switch designs.
I_C	1 A - Continuous DC collector current; supports sustained load switching in regulators and drivers.
h_FE	63–160 - DC current gain range at V_CE = 2 V, I_C = 150 mA; ensures predictable base drive sizing.
V_CE(sat)	≤ 0.5 V at I_C = 500 mA, I_B = 50 mA - Low saturation voltage minimizes conduction loss in switching applications.
P_tot	1.65 W - Max power dissipation on 4-layer FR4 with 1 cm² collector pad; enables higher ambient temperature operation.
f_T	100–180 MHz - Transition frequency at V_CE = 5 V, I_C = 50 mA; supports moderate-speed switching up to ~10 MHz.
R_th(j-a)	76 K/W - Junction-to-ambient thermal resistance under optimal 4-layer PCB layout; critical for thermal margin calculation.

Pinout & Package

Package: SOT1061 - ultra-thin, leadless, thermally enhanced plastic SMD package (2.0 × 2.0 × 0.65 mm); collector terminal forms exposed bottom pad for direct PCB thermal coupling.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control input; requires current-limited drive (max I_B = 0.3 A) to avoid saturation delay or thermal stress.
2	Emitter (E)	Reference node for current flow; connected to ground or low-side return path in switch configurations.
3	Collector (C)	Power output node; electrically and thermally tied to PCB copper area via exposed pad for heat extraction.

Key Features

Feature	Design Value
High I_C capability	1 A DC / 2 A pulsed enables driving loads like relay coils or gate capacitance of power MOSFETs without external buffering.
Three h_FE bins	BC54-10PA's 63–160 gain range allows precise base resistor selection for consistent turn-on behavior across production batches.
SOT1061 thermal design	Exposed collector pad and low R_th(j-a) (76 K/W) support reliable operation at 100 °C ambient in space-constrained power stages.
Low V_CE(sat)	≤0.5 V at I_C/I_B = 10 reduces conduction loss to <150 mW at 300 mA, improving efficiency in linear regulators.
Robust breakdown ratings	45 V V_CEO and V_CBO, plus 5 V V_EBO, provide margin against transients in 24 V and 36 V battery systems.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass transistor in adjustable LDO or series regulator supplying 3.3 V/1 A to microcontroller subsystems from 12 V battery input.

IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via base bias; operates in linear region with constant current flow.

Use Value: 0.5 V V_CE(sat) limits dropout to ≤0.6 V at full load, enabling efficient regulation without heatsink on standard FR4.

Use Scenario: Gate driver stage for N-channel power MOSFET in motor control H-bridge, switching at 20 kHz.

IC Role / Device Role / Timing Role: Low-side switch amplifying MCU GPIO signal to deliver >50 mA peak gate charge current.

Use Value: 160 h_FE bin ensures fast turn-on with minimal base drive, reducing MOSFET switching losses by shortening transition time.

Low-Side Switches

Battery-Driven Devices

Use Scenario: Load switch disconnecting auxiliary 5 V rail during sleep mode in portable medical monitor.

IC Role / Device Role / Timing Role: Saturated NPN switch controlled by enable logic; handles 800 mA load with <100 mV drop.

Use Value: 1 A rating and 45 V V_CEO allow safe operation across 3.7–4.2 V Li-ion battery range with surge margin.

Use Scenario: Power path controller managing USB-C input and battery charging in handheld test equipment.

IC Role / Device Role / Timing Role: Discrete switch routing power between source and system rail; biased by PMIC enable signal.

Use Value: SOT1061 footprint saves board area vs. SOT23; 0.65 mm height fits thin enclosures while maintaining 1.1 W dissipation capability.

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
BC54-16PA,115	Higher h_FE bin (100–250) at same V_CEO/I_C; identical SOT1061 package and pinout.	Better suited for low-base-drive scenarios (e.g., weak GPIOs), but may exhibit slower turn-off due to excess stored charge.	Select when base current is limited and gain consistency at low I_C (<50 mA) is critical.
BCP54,115	Same die family, but in SOT223 package; larger footprint, higher P_tot (1.5 W on 2-layer FR4), no exposed thermal pad.	Preferred where manual rework or higher power derating is needed; less suitable for ultra-thin or high-density layouts.	Choose when thermal margin >1.2 W is required and board thickness allows SOT223 height (1.8 mm).

Compared with BC54-10PA,115, BC54-16PA offers higher gain for reduced base drive but tighter gain tolerance trade-offs, while BCP54 provides greater thermal headroom at the cost of board area and profile-making BC54-10PA optimal for space-constrained, 1 A switching with moderate gain control.

Availability

BC54-10PA,115 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in industrial, medical, and portable electronics programs.

Supply support for BC54-10PA,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 high-volume, high-reliability discrete and logic devices, with leadership in automotive, industrial, and mobile applications.

The BC54PA series targets cost-sensitive, space-constrained power management functions-delivering robust NPN switching and amplification in ultra-thin packages for battery-powered and thermally demanding systems.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is 0.3 A per datasheet limiting values. For reliable long-term operation, keep continuous I_B ≤ 100 mA to avoid bond wire heating and gain degradation. At I_C = 1 A, a typical design uses I_B = 100 mA (h_FE ≈ 10), ensuring deep saturation while staying within thermal limits on standard FR4.

Can BC54-10PA,115 be used in avalanche mode?

No-this device is not rated or characterized for avalanche energy handling. Its V_CEO and V_CBO are absolute maximum ratings, not repetitive avalanche voltages. Inductive switching must include clamping (e.g., flyback diode) to prevent breakdown beyond 45 V, as no SOA curve is provided for unclamped inductive loads.

How does thermal performance differ between SOT1061 and SOT23 packages?

SOT1061 achieves up to 2× lower R_th(j-a) (76 K/W vs. ~200 K/W for standard SOT23) due to its exposed collector pad and optimized copper connection. On identical FR4, BC54-10PA,115 delivers 1.65 W dissipation versus ~0.5 W for SOT23-packaged equivalents-enabling higher current or ambient temperature operation without derating.

Is BC54-10PA,115 qualified for automotive applications?

No-per Revision History (Section 13), this part was explicitly changed to non-automotive qualification in Rev. 10 (2024). It lacks AEC-Q101 stress testing and automotive-grade process controls. For automotive use, Nexperia recommends the -Q qualified variants (e.g., BC54PA-Q, if available) or functionally equivalent automotive-grade alternatives.

BC54-10PA,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)

BC54-10PA,115 FAQ

1.How can I place an order for BC54-10PA,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC54-10PA,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 BC54-10PA,115 reliable?

The price and inventory of BC54-10PA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC54-10PA,115 is usually 5 days.

3.What payment methods are accepted for BC54-10PA,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC54-10PA,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC54-10PA,115?

BC54-10PA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC54-10PA,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 BC54-10PA,115?

For technical support, including BC54-10PA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC54-10PA,115 requirements.

6.How does Aetrix verify that BC54-10PA,115 is sourced from the original manufacturer or authorized distributors?

All BC54-10PA,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 BC54-10PA,115 meets industry standards.

7.What is the process for return or replacement of BC54-10PA,115?

All BC54-10PA,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC54-10PA,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 BC54-10PA,115 part is unused and in its original packaging.

Return procedure for BC54-10PA,115:

1.Submit a request within 90 days.

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

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