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

Nexperia USA Inc. BCP54TF

Name: BCP54TF
Brand: Nexperia USA Inc.
SKU: BCP54TF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCP54TF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: BCP54TF.pdf

Description:: TRANS NPN 45V 1A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:2,945

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Product details

Overview

BCP54TF from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT223 (SC-73) package, rated for 45 V V_CEO, 1 A continuous collector current, and 1.8 W total power dissipation on 4-layer PCB with 1 cm² collector pad - used in linear voltage regulators, MOSFET drivers, and high-side switch stages of automotive power management systems.

For engineers reviewing the BCP54TF datasheet, BCP54TF pinout, BCP54TF application, or BCP54TF equivalent, this page delivers verified electrical parameters, thermal derating behavior, junction-to-ambient impedance curves, h_FE variation across temperature and bias, and real-world SOA boundaries under pulsed and DC conditions.

Technical Context

The BCP54TF operates as a general-purpose NPN bipolar junction transistor optimized for medium-power switching and linear amplification. Its 4-pin SOT223 package features dual collector terminals (pins 2 and 4) to enhance thermal conduction and current handling, enabling stable operation up to 150 °C junction temperature.

It exhibits DC current gain (h_FE) ranging from 63 to 250 at V_CE = 2 V and I_C = 150 mA, with f_T = 155 MHz typical at V_CE = 5 V, I_C = 50 mA, supporting high-speed switching in driver circuits while maintaining low V_CE(sat) ≤ 500 mV at I_C = 500 mA / I_B = 50 mA.

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 high-side switch or regulator applications.
I_C	1 A continuous - Rated DC collector current; supports sustained load switching in 12 V automotive power stages.
P_tot	1.8 W (4-layer PCB, 1 cm² collector pad) - Thermal limit dictating heatsinking requirements for stable long-term operation.
h_FE	63–250 @ V_CE = 2 V, I_C = 150 mA - Wide DC gain range enables flexible bias design in amplifier and driver feedback networks.
f_T	155 MHz typical - Enables reliable switching up to ~10–20 MHz in gate driving applications without excessive phase lag.
R_th(j-a)	70 K/W (4-layer PCB, 1 cm² collector pad) - Quantifies thermal resistance for junction-to-ambient cooling path; critical for thermal margin calculation.
V_CE(sat)	≤ 500 mV @ I_C = 500 mA, I_B = 50 mA - Low saturation voltage minimizes conduction loss and self-heating in switching mode.

Pinout & Package

SOT223 (SC-73) surface-mount plastic package with integrated heat sink tab (pin 2 and 4 both connected to collector); 4-terminal configuration optimized for thermal performance and PCB copper area utilization.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node; requires current-limited drive (max I_B = 0.2 A DC) to avoid overdrive and secondary breakdown.
2	Collector	Main high-current output terminal; electrically and thermally tied to exposed metal tab for enhanced heat transfer to PCB.
3	Emitter	Reference/return path for collector current; connects to ground or low-side return in high-side switch topologies.
4	Collector	Second collector terminal - paralleled with pin 2 to reduce bond wire inductance and improve thermal spreading to PCB copper.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD22 standards.
Dual collector terminals	Reduces effective thermal resistance by 30% vs. single-collector SOT223 variants; improves power handling on standard FR4 boards.
High I_CM = 2 A	Supports short-duration surge currents (tp ≤ 1 ms), enabling robust response to load transients in power supply protection circuits.
Low V_BE ≈ 1 V	Enables direct interface with 3.3 V or 5 V logic-level drivers without level-shifting, reducing component count in gate-drive stages.
Wide h_FE spread (63–250)	Allows binning for precision current mirror or gain-stable amplifier designs; avoids need for external emitter degeneration in many cases.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass transistor in adjustable 5–12 V linear regulators powering infotainment microcontrollers.

IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via base current modulation from error amplifier.

Use Value: 45 V rating accommodates automotive battery transients up to 40 V; 1.8 W dissipation supports 500 mA output at 5 V dropout.

Use Scenario: Totem-pole stage driving high-capacitance gate of N-channel power MOSFET in BLDC motor control.

IC Role / Device Role / Timing Role: High-current NPN switch sinking gate charge during turn-off; paired with PNP for push-pull action.

Use Value: 2 A peak current capability handles 10 nF gate capacitance at 20 kHz PWM with <100 ns fall time; dual collector pins minimize switching losses.

High-Side Switches

Power Management

Use Scenario: Load switch for 12 V cabin lighting or HVAC actuators in automotive body control modules.

IC Role / Device Role / Timing Role: NPN configured in emitter-follower topology with base driven by MCU GPIO through current-limiting resistor.

Use Value: V_CEO = 45 V ensures immunity to load-dump spikes; low V_CE(sat) limits power loss to <500 mW at 1 A load.

Use Scenario: Current-sense amplifier front-end or enable-stage transistor in multi-rail PMIC subsystems.

IC Role / Device Role / Timing Role: Precision current mirror reference or enable path switch controlling downstream LDO activation.

Use Value: Tight h_FE consistency across temperature (±15% from −40 °C to 125 °C) ensures stable current mirroring accuracy in safety-critical monitoring paths.

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
BCP54-16T	Higher h_FE min = 100 (vs. 63 for BCP54TF), same V_CEO/I_C/package	Better suited for low-base-drive applications like high-gain current mirrors where precise β matters more than max current	Select when designing for minimal base drive current or tighter h_FE tolerance; not drop-in due to gain binning mismatch
ZTX653	TO-92 package, lower P_tot = 1 W, h_FE = 100–800, V_CEO = 60 V	Used in space-constrained consumer electronics; lacks AEC-Q101 qualification and thermal performance of SOT223	Choose only for non-automotive, low-power prototyping; unsuitable for production automotive or industrial thermal environments

Compared with BCP54-16T, the BCP54TF offers broader h_FE tolerance for cost-sensitive driver stages, while ZTX653 trades automotive reliability and thermal capability for higher voltage headroom and legacy through-hole compatibility - making BCP54TF optimal for volume automotive power interfaces requiring validated thermal and reliability margins.

Availability

BCP54TF is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and high-side switches requiring stable component supply in automotive, industrial control, and embedded power systems.

Supply support for BCP54TF 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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.

The BCP54T series belongs to Nexperia's AEC-Q101-qualified medium-power transistor family, designed specifically for robust, thermally efficient switching and regulation in automotive power distribution and body electronics.

FAQ

Is BCP54TF pin-compatible with BCP54-10T and BCP54-16T?

Yes - all three share identical SOT223 (SC-73) pinout (base-collector-emitter-collector), same mechanical footprint, and identical limiting values. Only h_FE binning differs: BCP54TF covers 63–250, BCP54-10T is 63–160, and BCP54-16T is 100–250. No layout change is needed when substituting within the same gain band.

What is the maximum allowable ambient temperature for continuous 1 A operation?

At 1 A DC collector current, the device dissipates up to 0.5 W assuming V_CE(sat) ≈ 500 mV. With R_th(j-a) = 70 K/W (4-layer PCB, 1 cm² collector pad), junction rise is 35 °C. Thus, T_amb can reach 115 °C before hitting the 150 °C T_j limit - confirmed by Fig. 1 derating curve showing ≥1.3 W available at 100 °C ambient.

Does BCP54TF support pulse operation beyond its DC ratings?

Yes - it supports I_CM = 2 A for single pulses ≤1 ms (Table 5), and safe operating area (Fig. 2) confirms 1 A is sustainable up to V_CE = 25 V in pulsed mode. Transient thermal impedance data (Figs. 3–7) further validate 100 µs–10 ms pulse handling with <50% duty cycle on appropriate PCB layouts.

How does the dual-collector configuration affect PCB layout?

Pins 2 and 4 must be connected to the same copper pour - typically a large thermal pad tied to internal ground or power plane. The footprint in Fig. 19 specifies 6.15 mm × 3.85 mm solder land with 4× 1.2 mm pads for pins 1–4. Connecting both collectors reduces current density and lowers effective R_th(j-a) by distributing heat across two parallel paths to the board.

BCP54TF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-261-4, TO-261AA

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:: 1.3 W

Frequency - Transition:: 155MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

BCP54TF FAQ

1.How can I place an order for BCP54TF through Aetrix?

Please submit a Request for Quotation (RFQ) for BCP54TF 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 BCP54TF reliable?

The price and inventory of BCP54TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP54TF is usually 5 days.

3.What payment methods are accepted for BCP54TF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP54TF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCP54TF?

BCP54TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCP54TF 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 BCP54TF?

For technical support, including BCP54TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP54TF requirements.

6.How does Aetrix verify that BCP54TF is sourced from the original manufacturer or authorized distributors?

All BCP54TF 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 BCP54TF meets industry standards.

7.What is the process for return or replacement of BCP54TF?

All BCP54TF units undergo pre-shipment inspection (PSI). If there is an issue with BCP54TF, 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 BCP54TF part is unused and in its original packaging.

Return procedure for BCP54TF:

1.Submit a request within 90 days.

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

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