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

Nexperia USA Inc. BCX56-16-QF

Name: BCX56-16-QF
Brand: Nexperia USA Inc.
SKU: BCX56-16-QF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX56-16-QF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX56-16-QF.pdf

Description:: TRANS NPN 80V 1A SOT-89

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX56-16-QF from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT89 (SC-62) package, rated for 80 V V_CEO, 1 A continuous collector current, and 100–250 h_FE at V_CE = 2 V / I_C = 150 mA; used as low-side switch or MOSFET driver in automotive power management circuits.

For engineers reviewing the BCX56-16-QF datasheet, BCX56-16-QF pinout, BCX56-16-QF application, or BCX56-16-QF equivalent, key selection criteria include its 80 V breakdown voltage, thermal performance on FR4 PCBs with 6 cm² collector pad (1.35 W P_tot), AEC-Q101 qualification, and SOT89 footprint compatibility with space-constrained linear regulators and battery-driven systems.

Technical Context

This transistor operates as a single-element NPN bipolar junction device optimized for medium-power switching and amplification. Its design supports pulsed peak collector current up to 2 A (t_p ≤ 1 ms) and base-emitter breakdown of 5 V, enabling robust gate driving in 12 V/24 V automotive subsystems.

The BCX56-16-QF delivers h_FE = 100–250 under standard test conditions (V_CE = 2 V, I_C = 150 mA, pulsed), with V_CE(sat) ≤ 0.5 V at I_C = 500 mA / I_B = 50 mA, ensuring low conduction loss in linear regulator pass elements and low-side load switches.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - Maximum safe collector-emitter voltage with base open; enables use in 48 V automotive subsystems and industrial 24 V rails.
I_C (continuous)	1 A - Continuous DC collector current rating; supports sustained switching in power management IC drivers and linear regulators.
h_FE	100–250 - DC current gain range at V_CE = 2 V / I_C = 150 mA; ensures stable biasing across temperature for analog amplifier stages.
P_tot (6 cm² pad)	1.35 W - Total power dissipation on FR4 PCB with 6 cm² collector copper area; defines thermal headroom for unheatsinked operation.
f_T	100–180 MHz - Transition frequency at V_CE = 5 V / I_C = 50 mA; supports high-speed switching in PWM-controlled loads up to ~10 MHz.
R_th(j-a)	93 K/W - Junction-to-ambient thermal resistance with 6 cm² collector pad; determines steady-state temperature rise under 1 A load.

Pinout & Package

SOT89 (SC-62) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, flat leads for reflow/wave soldering; collector tab forms thermal and electrical connection via large copper pad.

Pin/Terminal	Circuit Role	Design Meaning
1 (E)	Emitter	Low-impedance current return path; connected to ground or low-side reference in switch configurations.
2 (C)	Collector	Main power output terminal; electrically and thermally coupled to PCB copper for heat dissipation and current routing.
3 (B)	Base	Control input requiring ~0.7 V forward bias; driven by microcontroller GPIO or logic-level signal with series resistor for current limiting.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications per stress-test requirements including HTGB, HTRB, and temperature cycling.
Three h_FE variants	BCX56-10-Q (63–160), BCX56-16-Q (100–250), BCX56-Q (63–250); enables precise gain matching in production batches.
High P_tot scalability	Power dissipation increases from 0.50 W (standard footprint) to 1.35 W (6 cm² pad); allows thermal optimization without changing package.
Low V_CE(sat)	≤ 0.5 V at I_C/I_B = 10; reduces conduction loss and self-heating in linear-mode operation.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Used as pass transistor in adjustable LDOs delivering up to 1 A output current with <1 % line/load regulation.

IC Role / Device Role / Timing Role: NPN emitter-follower configured as series pass element, controlled by error amplifier feedback loop.

Use Value: Low V_CE(sat) minimizes dropout voltage; high h_FE reduces base drive current demand and improves transient response.

Use Scenario: Drives N-channel MOSFET gates in automotive motor control modules operating from 12 V battery supply.

IC Role / Device Role / Timing Role: Low-side level-shifting switch that sinks gate charge during turn-off and provides fast discharge path.

Use Value: 2 A peak current capability enables sub-100 ns gate discharge; AEC-Q101 qualification ensures reliability in engine bay environments.

Low-Side Switches

Battery-Driven Devices

Use Scenario: Controls 12 V solenoid valves and LED arrays in ADAS actuators and body electronics modules.

IC Role / Device Role / Timing Role: Single-transistor low-side switch with flyback diode protection, driven directly by MCU GPIO.

Use Value: 80 V V_CEO withstands load-dump transients; SOT89 thermal performance sustains 1 A load without heatsink.

Use Scenario: Powers auxiliary functions in portable diagnostic tools and handheld infotainment accessories powered by Li-ion packs.

IC Role / Device Role / Timing Role: Load switch enabling/disabling subsystem power rails to extend battery life and reduce standby leakage.

Use Value: Low I_CBO (≤100 nA) and I_EBO (≤100 nA) minimize quiescent current; compact SOT89 footprint saves board space.

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
BCX56-16,115	Same die, non-AEC-Q101 version; identical electrical specs but no automotive qualification testing.	Not suitable for safety-critical or OEM automotive programs requiring AEC compliance.	Select only for cost-sensitive industrial or consumer designs where qualification is not mandated.
ZTX653	Higher V_CEO (100 V), lower h_FE (20–150), TO-92 package; 1.25 W P_tot on PCB.	Larger footprint and lower gain limit use in precision linear regulators and high-speed drivers.	Prefer when higher voltage margin is needed and SOT89 thermal performance is not required.

Compared with BCX56-16-QF, BCX56-16,115 offers identical performance at lower cost but lacks automotive qualification, while ZTX653 trades gain and thermal efficiency for higher voltage tolerance and through-hole assembly compatibility.

Availability

BCX56-16-QF is available at Aetrix Electronics and suitable for automotive power management, linear voltage regulation, and MOSFET gate driving applications requiring stable component supply, AEC-Q101 compliance, and SOT89 thermal performance.

Supply support for BCX56-16-QF 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, delivering high-performance, reliable components for automotive, industrial, and consumer markets.

The BCX56-Q series belongs to Nexperia's AEC-Q101-qualified discrete transistor portfolio, engineered specifically for robustness in automotive power switching, linear regulation, and interface circuitry.

FAQ

What is the maximum allowable junction temperature for BCX56-16-QF?

The absolute maximum junction temperature is 150 °C per IEC 60134 limiting values. Operation above this threshold risks permanent degradation. Derating curves in Figure 1 show power must be reduced linearly above 25 °C ambient, reaching zero at 150 °C with 6 cm² collector pad.

Can BCX56-16-QF replace BCX56-10-QF in existing designs?

Yes, BCX56-16-QF is pin-compatible and shares identical package, voltage, and current ratings with BCX56-10-QF. The only difference is higher minimum h_FE (100 vs. 63), which improves base drive efficiency and reduces required base current in linear applications.

Is the SOT89 package lead-free and RoHS compliant?

Yes, BCX56-16-QF is manufactured using lead-free terminations and complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The device marking "BL" confirms full compliance per Nexperia's material declarations.

What is the recommended PCB layout for optimal thermal performance?

For 1.35 W P_tot, use a 6 cm² copper pad connected to pin 2 (collector) with ≥4 thermal vias to inner/ground planes. Maintain ≥0.5 mm clearance from other components and avoid covering the pad with solder mask to maximize heat transfer per Figure 11 footprint guidelines.

BCX56-16-QF 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):: 80 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:: 180MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

BCX56-16-QF FAQ

1.How can I place an order for BCX56-16-QF through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX56-16-QF 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 BCX56-16-QF reliable?

The price and inventory of BCX56-16-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX56-16-QF is usually 5 days.

3.What payment methods are accepted for BCX56-16-QF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX56-16-QF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX56-16-QF?

BCX56-16-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX56-16-QF 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 BCX56-16-QF?

For technical support, including BCX56-16-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX56-16-QF requirements.

6.How does Aetrix verify that BCX56-16-QF is sourced from the original manufacturer or authorized distributors?

All BCX56-16-QF 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 BCX56-16-QF meets industry standards.

7.What is the process for return or replacement of BCX56-16-QF?

All BCX56-16-QF units undergo pre-shipment inspection (PSI). If there is an issue with BCX56-16-QF, 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 BCX56-16-QF part is unused and in its original packaging.

Return procedure for BCX56-16-QF:

1.Submit a request within 90 days.

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

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