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

Nexperia USA Inc. BCP54-16,135

Name: BCP54-16,135
Brand: Nexperia USA Inc.
SKU: BCP54-16,135
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCP54-16,135

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCP54-16,135.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:4,081

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Product details

Overview

BCP54-16,135 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 250 h_FE at I_C = 150 mA. It serves as a low-side switch or MOSFET driver in automotive power management and linear regulators.

For engineers reviewing the BCP54-16,135 datasheet, BCP54-16,135 pinout, BCP54-16,135 application, or BCP54-16,135 equivalent, this device is selected for its high h_FE consistency at 100–250, robust thermal performance on FR4 PCBs with 6 cm² collector pad (1.35 W P_tot), and AEC-Q101 qualification for under-hood use.

Technical Context

This transistor operates as a single NPN silicon switching element with open-base V_CEO = 45 V and pulsed I_CM = 2 A. Its h_FE binning (100–250 at V_CE = 2 V, I_C = 150 mA) ensures predictable gain in analog amplification and saturated-switching configurations.

Thermal design relies on junction-to-ambient resistance of 93 K/W when mounted on FR4 with 6 cm² copper pad, enabling stable operation up to T_j = 150 °C. The dual-collector pin (pins 2 and 4) supports enhanced heatsinking in surface-mount layouts.

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 rating; supports sustained 12 V/1 A load switching in battery-driven devices.
h_FE	100–250 - DC current gain at V_CE = 2 V, I_C = 150 mA; enables precise base drive sizing for saturation in power stages.
P_tot	1.35 W - Total power dissipation with 6 cm² collector copper pad; sets thermal ceiling for ambient temperatures ≤75 °C.
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)	93 K/W - Junction-to-ambient thermal resistance with optimized 6 cm² pad; determines temperature rise per watt in PCB layout.
V_CE(sat)	≤0.5 V - Collector-emitter saturation voltage at I_C = 500 mA, I_B = 50 mA; limits conduction loss to ≤250 mW in switch mode.

Pinout & Package

SOT223 (SC-73) plastic surface-mount package with 4 leads and integrated heatsink tab (pin 2 and pin 4 both connected to collector). Dimensions: 6.7 × 3.7 × 1.8 mm; standard footprint per Figure 10 (reflow).

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node; requires ≥50 mA base drive for full saturation at 500 mA collector current.
2	Collector	Main power output terminal; electrically tied to pin 4; used for thermal anchoring to PCB copper.
3	Emiter	Reference/return path; connects to ground or low-side return rail in switching applications.
4	Collector	Second collector connection; identical to pin 2; improves thermal coupling and current sharing in high-power layouts.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock testing.
Three h_FE bins	BCP54-16 offers 100–250 h_FE, enabling consistent gain matching across production batches in feedback circuits.
Dual-collector thermal design	Pins 2 and 4 both connect to collector, allowing doubled solder-pad area for improved heat transfer on FR4 PCBs.
High P_tot scalability	1.35 W max dissipation with 6 cm² copper pad-3× higher than standard SOT223 footprint-supports compact power stage layouts.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass transistor in adjustable LDOs delivering up to 1 A at 5–12 V output.

IC Role / Device Role / Timing Role: NPN series pass element controlled by error amplifier; handles bulk current and thermal load.

Use Value: Low V_CE(sat) (≤0.5 V) minimizes dropout voltage; high h_FE reduces base drive burden on control IC.

Use Scenario: Gate driver stage for N-channel power MOSFETs in DC-DC converters or motor drivers.

IC Role / Device Role / Timing Role: Medium-current buffer between logic-level controller and MOSFET gate capacitance.

Use Value: f_T ≥100 MHz enables clean 1–5 MHz switching edges; dual-collector pins improve transient thermal response during burst-mode operation.

Low-Side Switches

Battery-Driven Devices

Use Scenario: Load switch for 12 V automotive accessories (e.g., fans, solenoids, LED arrays).

IC Role / Device Role / Timing Role: Saturated NPN switch controlling return path to ground; driven by microcontroller GPIO.

Use Value: AEC-Q101 qualification ensures reliability over -40 to +125 °C ambient; 2 A peak rating accommodates inrush currents.

Use Scenario: Power path control in portable medical monitors, handheld test equipment, and industrial sensors.

IC Role / Device Role / Timing Role: Reverse-polarity protection or battery disconnect switch in 3.3–24 V systems.

Use Value: 45 V V_CEO headroom prevents breakdown during load dump transients; low leakage (<100 nA ICBO) preserves battery life in standby.

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
BCP54-10,135	h_FE = 63–160 (lower mid-range gain); otherwise identical ratings and pinout.	Suitable where lower gain tolerance is acceptable and cost optimization is prioritized.	Select when base drive capability is limited and tighter h_FE spread is not required for closed-loop stability.
ZTX653STZ	TO-92 package (not SMT); V_CEO = 60 V; h_FE = 100–300; P_tot = 1 W (no thermal pad).	Used in through-hole prototyping or legacy board upgrades; lacks AEC-Q101 and SOT223 thermal advantage.	Choose only for manual assembly or non-automotive applications where 60 V rating and TO-92 form factor are mandatory.

Compared with BCP54-10,135, the BCP54-16,135 provides higher and more consistent h_FE for precision biasing, while ZTX653STZ trades SMT compatibility and automotive qualification for higher voltage margin and through-hole serviceability.

Availability

BCP54-16,135 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in automotive and industrial production.

Supply support for BCP54-16,135 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 roots in Philips Semiconductors and headquartered in Nijmegen, Netherlands.

The BCP54 series belongs to Nexperia's AEC-Q101-qualified medium-power bipolar portfolio, designed specifically for automotive power management, industrial switching, and battery-operated systems demanding robustness and thermal efficiency.

FAQ

Is BCP54-16,135 pin-compatible with other SOT223 NPN transistors?

Yes-BCP54-16,135 uses standard SOT223 pinout (B-C-E-C) with pins 2 and 4 both connected to collector. It matches physical and electrical pin mapping of BCP54-10,135 and BCP54,135, enabling drop-in replacement within the same h_FE bin family without layout change.

What is the maximum allowable PCB copper area for optimal thermal performance?

Optimal thermal performance is achieved with a 6 cm² copper pad connected to pins 2 and 4 (collector), yielding R_th(j-a) = 93 K/W and P_tot = 1.35 W at T_amb = 25 °C. Reducing pad area to 1 cm² lowers P_tot to 1.00 W; standard footprint limits it to 0.65 W.

Does BCP54-16,135 support pulse-width modulation (PWM) switching?

Yes-it supports PWM operation up to ~5 MHz due to f_T ≥100 MHz and fast saturation characteristics (V_CE(sat) ≤0.5 V at I_C/I_B = 10). For reliable PWM, maintain I_B ≥ I_C/10 and limit duty cycle to avoid junction temperature exceeding 150 °C.

How does AEC-Q101 qualification impact design validation for industrial use?

AEC-Q101 qualification confirms stress-test compliance for temperature cycling, HTRB, ESD, and mechanical shock-exceeding typical industrial requirements. While not mandatory for non-automotive use, it provides proven field reliability and simplifies long-term qualification for harsh-environment industrial deployments.

BCP54-16,135 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:: 100 @ 150mA, 2V

Power - Max:: 960 mW

Frequency - Transition:: 180MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

BCP54-16,135 FAQ

1.How can I place an order for BCP54-16,135 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCP54-16,135 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 BCP54-16,135 reliable?

The price and inventory of BCP54-16,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP54-16,135 is usually 5 days.

3.What payment methods are accepted for BCP54-16,135?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP54-16,135 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCP54-16,135?

BCP54-16,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCP54-16,135 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 BCP54-16,135?

For technical support, including BCP54-16,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP54-16,135 requirements.

6.How does Aetrix verify that BCP54-16,135 is sourced from the original manufacturer or authorized distributors?

All BCP54-16,135 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 BCP54-16,135 meets industry standards.

7.What is the process for return or replacement of BCP54-16,135?

All BCP54-16,135 units undergo pre-shipment inspection (PSI). If there is an issue with BCP54-16,135, 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 BCP54-16,135 part is unused and in its original packaging.

Return procedure for BCP54-16,135:

1.Submit a request within 90 days.

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

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