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

Nexperia USA Inc. BCP56-10-QX

Name: BCP56-10-QX
Brand: Nexperia USA Inc.
SKU: BCP56-10-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCP56-10-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCP56-10-QX.pdf

Description:: TRANS NPN 80V 1A SOT-223

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCP56-10-QX from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT223 (SC-73) package, rated for 80 V V_CEO, 1 A continuous collector current, and 160 h_FE at I_C = 150 mA / V_CE = 2 V. It delivers high power dissipation (1.35 W with 6 cm² copper pad) and supports linear voltage regulation, MOSFET gate driving, and low-side switching in automotive power management systems.

For engineers reviewing the BCP56-10-QX datasheet, BCP56-10-QX pinout, BCP56-10-QX application, or BCP56-10-QX equivalent, this page provides verified electrical parameters, thermal derating curves, junction-to-ambient resistance values under three PCB mounting conditions, and validated automotive-grade reliability data per AEC-Q101.

Technical Context

This transistor operates as a medium-power NPN switch or linear amplifier with fixed gain binning (h_FE = 63–160), optimized for stable DC current control in thermally constrained environments. Its dual-collector pin configuration (Pins 2 & 4) enables enhanced thermal conduction through the exposed collector pad on FR4 PCBs.

The device features 100 V V_CBO, 5 V V_EBO, and 2 A peak collector current capability (t_p ≤ 1 ms), supporting transient load handling in automotive battery-driven circuits. Thermal resistance ranges from 93 K/W (6 cm² pad) to 192 K/W (standard footprint), directly linking layout decisions to safe operating area.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - Maximum sustainable collector-emitter voltage with base open; defines upper rail limit in low-side switch designs.
I_C	1 A - Continuous DC collector current rating; sets maximum steady-state load drive capacity.
h_FE	63–160 - DC current gain range at V_CE = 2 V, I_C = 150 mA; determines required base drive for saturation in switching applications.
P_tot	1.35 W - Max power dissipation with 6 cm² copper pad; defines thermal design margin for sustained operation at ambient ≤ 25 °C.
R_th(j-a)	93 K/W - Junction-to-ambient thermal resistance with optimized 6 cm² collector pad; used to calculate junction temperature rise under load.
f_T	100–180 MHz - Transition frequency at V_CE = 5 V, I_C = 50 mA; indicates usable bandwidth for small-signal amplification.
V_CE(sat)	≤ 500 mV - Collector-emitter saturation voltage at I_C = 500 mA, I_B = 50 mA; determines conduction loss and heat generation in saturated switch mode.

Pinout & Package

SOT223 (SC-73) surface-mount plastic package with 4 leads and integrated heatsink pad; Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector (dual-collector configuration for improved thermal transfer).

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node requiring current-limited drive; base-emitter junction forward voltage ≤ 1 V at I_C = 500 mA.
2	Collector	Main high-current output terminal; electrically and thermally connected to exposed metal pad on underside of package.
3	Emitter	Reference node for current flow; tied to ground or low-side return path in common-emitter configurations.
4	Collector	Second collector connection-parallel to Pin 2-to maximize thermal conduction area and reduce R_th(j-sp) to 16 K/W.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive applications including engine control modules and body electronics per stress test requirements.
Three h_FE bins	BCP56-10-QX offers mid-range gain (63–160), enabling predictable base drive sizing without overdesigning driver stages.
Dual-collector thermal path	Pins 2 and 4 both connect to the same internal collector structure, doubling solder joint area for heat extraction on PCB.
High P_tot scalability	Power dissipation increases from 0.65 W (standard footprint) to 1.35 W (6 cm² pad), allowing layout-dependent thermal headroom.
Low V_CE(sat)	≤ 500 mV ensures <1.5 W conduction loss at 3 A peak (with forced base drive), critical for efficiency in battery-powered regulators.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass transistor in adjustable LDO or series regulator supplying 5 V/1 A to infotainment microcontrollers.

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

Use Value: 80 V V_CEO accommodates wide input transients (e.g., load dump up to 40 V); 1.35 W P_tot supports full-load operation with minimal heatsinking.

Use Scenario: Gate driver stage for 40 V N-channel power MOSFET in automotive window lift motor H-bridge.

IC Role / Device Role / Timing Role: Low-side level-shifting switch delivering >50 mA peak gate current during turn-on.

Use Value: 2 A I_CM handles short-duration gate charge pulses; 160 h_FE ensures reliable saturation with 5 mA base drive.

Low-Side Switches

Battery-Driven Devices

Use Scenario: Load switch controlling 12 V/800 mA cabin lighting circuit in vehicle interior module.

IC Role / Device Role / Timing Role: Saturated NPN switch placed between load and ground, controlled by MCU GPIO.

Use Value: ≤500 mV V_CE(sat) limits voltage drop to <0.5% of supply; AEC-Q101 qualification guarantees lifetime reliability at 105 °C ambient.

Use Scenario: Power management transistor in portable diagnostic tool powered by 12 V lead-acid battery.

IC Role / Device Role / Timing Role: Current-limiting element protecting downstream circuitry during cold-cranking (6 V min).

Use Value: 5 V V_EBO withstands reverse-battery protection diode drop; -55 °C to 150 °C T_stg/T_j range supports extreme environmental operation.

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
BCP56-16-QX	Higher h_FE range (100–250) at same V_CE/I_C; otherwise identical ratings and package.	Better suited for low-base-drive applications (e.g., direct MCU GPIO drive without buffer).	Select when base current budget is limited and gain consistency across temperature is prioritized.
ZTX653	TO-92 package, 100 V V_CEO, 1 A I_C, but only 0.8 W P_tot and no AEC-Q101 qualification.	Limited to non-automotive industrial or consumer use; unsuitable for under-hood deployment.	Choose only for cost-sensitive, non-automotive prototypes where thermal performance and qualification are secondary.

Compared with BCP56-10-QX, BCP56-16-QX offers higher gain for reduced base drive overhead, while ZTX653 trades automotive reliability and thermal capability for legacy through-hole compatibility and lower unit cost.

Availability

BCP56-10-QX 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 SOT223 thermal performance.

Supply support for BCP56-10-QX 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 system functionality, delivering high-performance, reliable discrete, logic, and MOSFET components.

The BCP56-Q series belongs to Nexperia's AEC-Q101-qualified medium-power bipolar transistor line, engineered specifically for robust operation in automotive power control, voltage regulation, and interface circuits.

FAQ

What is the maximum allowable junction temperature for BCP56-10-QX?

The absolute maximum junction temperature (T_j) is 150 °C per IEC 60134 limiting values. Operation above this threshold risks permanent degradation. Derating is required above 25 °C ambient-e.g., at 100 °C ambient, maximum usable P_tot drops to ~0.7 W with 6 cm² pad (based on Fig. 1 slope of 1.35 W at 25 °C, zero at 150 °C).

Is BCP56-10-QX pin-compatible with other SOT223 NPN transistors?

Yes-BCP56-10-QX uses standard SOT223 pinout (Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector). However, functional compatibility requires verification of h_FE, V_CE(sat), and thermal resistance, as competing parts may lack dual-collector construction or AEC-Q101 qualification.

How does the dual-collector configuration affect PCB layout?

Pins 2 and 4 must be connected to the same large copper pour (≥6 cm² recommended) to achieve the 93 K/W R_th(j-a). The exposed collector pad beneath the package must be fully soldered to this pour using ≥4 thermal vias (0.3 mm diameter, spaced ≤2 mm apart) to minimize junction-to-board resistance.

Can BCP56-10-QX replace BCP56-10 in non-automotive designs?

Yes-BCP56-10-QX is a drop-in replacement for BCP56-10 in all electrical and mechanical respects, with identical pinout, ratings, and marking (BCP56/10). The "-Q" suffix denotes AEC-Q101 qualification; non-automotive users benefit from the same enhanced process control and screening without functional trade-offs.

BCP56-10-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BCP56-Q

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):: 80 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:: 650 mW

Frequency - Transition:: 180MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

BCP56-10-QX FAQ

1.How can I place an order for BCP56-10-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for BCP56-10-QX 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 BCP56-10-QX reliable?

The price and inventory of BCP56-10-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP56-10-QX is usually 5 days.

3.What payment methods are accepted for BCP56-10-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP56-10-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCP56-10-QX?

BCP56-10-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCP56-10-QX 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 BCP56-10-QX?

For technical support, including BCP56-10-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP56-10-QX requirements.

6.How does Aetrix verify that BCP56-10-QX is sourced from the original manufacturer or authorized distributors?

All BCP56-10-QX 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 BCP56-10-QX meets industry standards.

7.What is the process for return or replacement of BCP56-10-QX?

All BCP56-10-QX units undergo pre-shipment inspection (PSI). If there is an issue with BCP56-10-QX, 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 BCP56-10-QX part is unused and in its original packaging.

Return procedure for BCP56-10-QX:

1.Submit a request within 90 days.

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

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