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

Nexperia USA Inc. BCX54-16TF

Name: BCX54-16TF
Brand: Nexperia USA Inc.
SKU: BCX54-16TF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX54-16TF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX54-16TF.pdf

Description:: TRANS NPN 45V 1A SOT-89

Quantity:: RFQ Add To RFQ list

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Inventory:11,970

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Product details

Overview

BCX54-16TF from Nexperia is a 45 V, 1 A NPN power bipolar transistor in SOT89 (SC-62) surface-mount package, designed for medium-power switching and linear amplification roles in automotive-qualified circuits. It delivers h_FE = 100–250 at V_CE = 2 V / I_C = 150 mA, supports 2 A peak collector current (t_p ≤ 1 ms), and operates up to 150 °C junction temperature - enabling use in MOSFET drivers and low-side switches.

For engineers reviewing the BCX54-16TF datasheet, BCX54-16TF pinout, BCX54-16TF application, or BCX54-16TF equivalent, key selection criteria include its AEC-Q101 qualification, 45 V V_CEO, 1100 mW maximum power dissipation on 6 cm² copper pad, and three-tier h_FE binning for precision biasing in voltage regulators and power management stages.

Technical Context

This NPN transistor uses epitaxial planar technology with optimized base doping and emitter geometry to sustain high DC current gain across wide temperature ranges (−55 °C to +150 °C) while maintaining low V_CE(sat) ≤ 500 mV at I_C = 500 mA / I_B = 50 mA. Its thermal resistance R_th(j-a) drops to 114 K/W when mounted on 6 cm² copper, supporting stable operation under sustained load conditions.

The device features low C_c = 4.5 pF at V_CB = 10 V and f_T = 155 MHz at V_CE = 5 V / I_C = 50 mA, confirming suitability for medium-frequency switching and analog amplification where bandwidth and switching speed must coexist with robust thermal handling.

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 designs.
I_C	1 A continuous - Rated DC collector current; supports sustained 1 A loads without derating on adequate PCB copper.
h_FE	100–250 at V_CE = 2 V / I_C = 150 mA - Tight gain bin ensures predictable base drive requirements in linear and saturated switching modes.
P_tot	1100 mW on 6 cm² copper - Enables higher ambient temperature operation in enclosed industrial enclosures without forced cooling.
f_T	155 MHz - Supports switching above audio frequencies and stable small-signal amplification up to ~100 MHz.
V_CE(sat)	≤ 500 mV at I_C = 500 mA / I_B = 50 mA - Minimizes conduction loss and self-heating in saturated-switch applications like motor gate drivers.
AEC-Q101	Qualified - Meets automotive stress test requirements for temperature cycling, HTRB, and ESD, enabling deployment in under-hood modules.

Pinout & Package

SOT89 (SC-62) plastic surface-mount package: 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body height, with exposed collector tab for thermal conduction to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current return path; connects to ground or low-side reference; requires low-impedance trace for stability in linear regulators.
2	Collector	Main power output node; electrically and thermally connected to large copper pour for heat dissipation and low-inductance switching.
3	Base	Control input; driven by microcontroller GPIO or op-amp output; requires series resistor to limit I_B ≤ 200 mA DC.

Key Features

Feature	Design Value
Three h_FE bins	BCX54-16T offers 100–250 gain range - enables precise current mirror matching and consistent turn-on thresholds across production batches.
AEC-Q101 qualification	Validated for automotive environments - eliminates need for additional reliability screening in ADAS power supplies and body control modules.
High P_tot scalability	1100 mW rating with 6 cm² copper - allows single-device implementation of 1 A switching stages without heatsinks in space-constrained ECUs.
Low V_BE variation	V_BE ≤ 1 V at I_C = 500 mA - reduces base drive power loss and eases compatibility with 3.3 V logic-level controllers.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass transistor in adjustable LDOs delivering 1 A at 5–12 V output with <1 % line/load regulation.

IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via emitter-follower configuration with feedback to base.

Use Value: High h_FE minimizes base current demand, reducing dropout voltage and improving efficiency over wide input ranges.

Use Scenario: Gate driver stage for 40 V N-channel MOSFETs in BLDC motor inverters and DC-DC half-bridges.

IC Role / Device Role / Timing Role: Low-side level shifter and current amplifier translating MCU PWM signals into high-current gate pulses.

Use Value: 2 A peak current capability ensures fast MOSFET turn-on with <100 ns rise time, minimizing switching losses.

Low-Side Switches

Power Management

Use Scenario: Load switch for automotive lighting, solenoids, and fan control in 12 V/24 V systems.

IC Role / Device Role / Timing Role: Saturated NPN switch connecting load to ground under microcontroller command.

Use Value: V_CE(sat) ≤ 500 mV limits power loss to <500 mW at 1 A, enabling compact thermal design without active cooling.

Use Scenario: Current-sense amplifier front-end and battery protection circuitry in portable industrial tools.

IC Role / Device Role / Timing Role: Amplifier stage for shunt-based current monitoring and overcurrent trip signal generation.

Use Value: Stable h_FE across −40 °C to +125 °C ensures repeatable trip thresholds independent of ambient temperature drift.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX54-16TA	Same electrical specs but AEC-Q101 requalified per Rev. 2; identical SOT89 package and marking (B7).	No functional difference; intended for new designs requiring latest qualification revision.	Select BCX54-16TA if compliance documentation must reflect post-2020 AEC-Q101 test reports.
ZTX653	Higher V_CEO = 60 V, lower h_FE = 100–300, TO-92 package - larger footprint, no AEC-Q101 rating.	Not suitable for automotive; used in industrial power supplies where higher voltage margin is prioritized over qualification.	Choose ZTX653 only for non-automotive 60 V systems where SOT89 mounting is not required.

Compared with BCX54-16TF, BCX54-16TA offers identical performance with updated qualification evidence, while ZTX653 trades automotive compliance and SMT compatibility for higher voltage headroom and through-hole assembly flexibility.

Availability

BCX54-16TF is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in automotive, industrial control, and power conversion programs.

Supply support for BCX54-16TF 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-qualified components and advanced packaging.

The BCX54T series targets cost-sensitive, thermally demanding power control functions in automotive and industrial applications - emphasizing AEC-Q101 reliability, SOT89 thermal efficiency, and tight h_FE binning for predictable system behavior.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is 200 mA per datasheet limiting values. For reliable long-term operation, keep I_B ≤ 100 mA with appropriate series resistance to avoid thermal runaway, especially when driving at high ambient temperatures or with poor PCB copper area.

Can BCX54-16TF replace BCX54-10T in an existing design?

Yes - both share identical package, voltage/current ratings, and thermal characteristics; only h_FE min/max differs (63–160 vs. 100–250). If the original design relies on minimum h_FE ≥ 100, BCX54-16T is a direct upgrade; verify base drive margin remains sufficient at lowest specified h_FE.

Is the collector tab electrically isolated from other pins?

No - Pin 2 (collector) is internally and externally connected to the exposed metal tab on the SOT89 package. This tab must be soldered to a dedicated copper pour serving as both electrical node and thermal path; isolation requires insulating thermal pads or dielectric coatings.

Does BCX54-16TF support pulsed operation beyond 1 A?

Yes - it supports 2 A peak collector current for single pulses ≤ 1 ms (duty cycle ≤ 2 %), provided PCB thermal design maintains T_j ≤ 150 °C. Derate based on Fig. 1 power curves: at 1 cm² copper, max continuous power drops to 800 mW, limiting average current to ~0.8 A.

BCX54-16TF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-243AA

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:: 500 mW

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

BCX54-16TF FAQ

1.How can I place an order for BCX54-16TF through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX54-16TF 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 BCX54-16TF reliable?

The price and inventory of BCX54-16TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX54-16TF is usually 5 days.

3.What payment methods are accepted for BCX54-16TF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX54-16TF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX54-16TF?

BCX54-16TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX54-16TF 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 BCX54-16TF?

For technical support, including BCX54-16TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX54-16TF requirements.

6.How does Aetrix verify that BCX54-16TF is sourced from the original manufacturer or authorized distributors?

All BCX54-16TF 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 BCX54-16TF meets industry standards.

7.What is the process for return or replacement of BCX54-16TF?

All BCX54-16TF units undergo pre-shipment inspection (PSI). If there is an issue with BCX54-16TF, 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 BCX54-16TF part is unused and in its original packaging.

Return procedure for BCX54-16TF:

1.Submit a request within 90 days.

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

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