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

Nexperia USA Inc. BCP56-10TX

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

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Part No.:: BCP56-10TX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCP56-10TX.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:2,540

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Product details

Overview

BCP56-10TX from Nexperia is an NPN medium power transistor in SOT223 (SC-73) package, rated for 80 V V_CEO, 1 A continuous collector current, and 1.3 W power dissipation on 4-layer PCB with 1 cm² collector pad. It delivers h_FE = 63–160 at V_CE = 2 V and I_C = 150 mA, and is used in linear voltage regulators and high-side switch circuits requiring stable gain and thermal performance.

For engineers reviewing the BCP56-10TX datasheet, BCP56-10TX pinout, BCP56-10TX application, or BCP56-10TX equivalent, this page provides verified pin functions, thermal derating curves, safe operating area (SOA) boundaries, h_FE vs. temperature behavior, and validated alternatives for power switching and regulation designs.

Technical Context

This transistor operates as a medium-power NPN switch or linear amplifier with open-base V_CEO = 80 V and pulsed I_CM = 2 A. Its h_FE binning (63–160) ensures predictable DC gain in bias-critical applications like MOSFET gate driving and series pass regulation.

Thermal performance is defined across five mounting conditions: R_th(j-a) ranges from 70 K/W (4-layer PCB, 1 cm² collector pad) to 209 K/W (standard FR4 single-sided footprint), enabling precise junction temperature estimation under real board layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - Maximum collector-emitter voltage before breakdown with base open; defines safe blocking capability in high-side switch configurations.
I_C	1 A - Continuous DC collector current rating; supports sustained load switching up to 1 A without forced cooling.
h_FE	63–160 - DC current gain at V_CE = 2 V, I_C = 150 mA; enables predictable base drive sizing for saturation in switching applications.
P_tot	1.3 W - Total power dissipation on 4-layer FR4 PCB with 1 cm² collector pad; sets thermal limit for linear operation at ambient ≤75 °C.
f_T	100–155 MHz - Transition frequency at V_CE = 5 V, I_C = 50 mA; confirms usable bandwidth for low-frequency switching and analog amplification.
V_CE(sat)	≤500 mV - Collector-emitter saturation voltage at I_C = 500 mA, I_B = 50 mA; ensures <0.25 W conduction loss in saturated switching mode.
R_th(j-a)	70 K/W - Junction-to-ambient thermal resistance on optimized 4-layer PCB; allows ~18 °C rise per watt of dissipated power.

Pinout & Package

SOT223 (SC-73) surface-mount plastic package with integrated heatsink tab (pin 4 = collector); 4-pin layout optimized for thermal management on PCBs with copper pour.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input for bipolar junction; requires current-limited drive to achieve target I_C/I_B ratio (e.g., 10:1 for saturation).
2	Collector	Main current path output; electrically and thermally connected to exposed metal tab (pin 4) for enhanced heat transfer.
3	Emiter	Reference node for current flow; tied to ground or low-side return in common-emitter configurations.
4	Collector	Dedicated thermal and electrical connection to collector; must be soldered to ≥1 cm² copper pour for rated P_tot.

Key Features

Feature	Design Value
Three h_FE bins	Enables precise gain matching across production lots: BCP56-10TX (63–160), BCP56-16TX (100–250), BCP56TX (63–250).
High I_CM	2 A peak collector current (tp ≤ 1 ms) supports short-duration surge handling in motor drivers and hot-swap circuits.
Optimized SOA	Safe operating area extends to 80 V × 1 A DC and higher pulse currents, validated per Fig. 2 in datasheet Rev. 3.
Low V_CE(sat)	≤500 mV at I_C = 500 mA ensures minimal conduction loss and reduced self-heating during switching.
Thermal design flexibility	R_th(j-a) varies from 70–209 K/W depending on PCB copper layer count and collector pad size-enables thermal optimization without package change.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Used as series pass element in adjustable LDOs delivering up to 1 A at 5–24 V output.

IC Role / Device Role / Timing Role: NPN power transistor regulating output by varying collector-emitter voltage drop in linear mode.

Use Value: Stable h_FE and low V_CE(sat) minimize dropout voltage and thermal drift over load/temperature range.

Use Scenario: Driving N-channel MOSFET gates in half-bridge or synchronous buck converters.

IC Role / Device Role / Timing Role: High-current NPN switch providing fast turn-on gate charge injection and controlled turn-off via base resistor network.

Use Value: 2 A peak I_CM and 155 MHz f_T enable sub-100 ns gate drive transitions with minimal Miller effect distortion.

High-Side Switches

Power Management

Use Scenario: Controlling 12–48 V loads (e.g., solenoids, LED arrays) from microcontroller GPIO via level-shifting base circuit.

IC Role / Device Role / Timing Role: Medium-power NPN configured in emitter-follower or common-emitter topology for load-side switching.

Use Value: 80 V V_CEO and robust SOA allow reliable operation with inductive kickback suppression using flyback diodes.

Use Scenario: Enabling/disabling subsystem rails (e.g., sensor clusters, communication modules) in industrial control units.

IC Role / Device Role / Timing Role: Discrete load switch managing power sequencing and fault isolation in multi-rail systems.

Use Value: 1.3 W P_tot with 70 K/W R_th(j-a) permits continuous 1 A switching without external heatsink on 4-layer boards.

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
BCP56-16TX	Higher h_FE bin (100–250 vs. 63–160); identical V_CEO, I_C, package, and thermal specs.	Better suited for low-base-drive applications where precise gain >100 is required (e.g., low-I_B regulator feedback paths).	Select when base drive current budget is constrained and higher gain stability at low I_C is critical.
ZTX653	Same SOT223 package, but higher V_CEO = 100 V, lower h_FE = 100–300 (unbinned), and P_tot = 1 W on standard FR4.	Preferred in 48 V automotive-derived systems needing extra voltage margin; less suitable for high-power linear regulation due to lower P_tot.	Choose for 100 V blocking requirement or legacy Zetex-compatible designs; verify SOA fit for 1 A continuous use.

Compared with BCP56-10TX, BCP56-16TX offers higher guaranteed h_FE without trade-offs in voltage or power, while ZTX653 trades 20 V headroom and 0.3 W dissipation for broader gain range and legacy compatibility-making each optimal for distinct thermal, gain, or voltage-margin priorities.

Availability

BCP56-10TX is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and high-side switches requiring stable component supply, consistent h_FE binning, and proven thermal performance on multilayer PCBs.

Supply support for BCP56-10TX 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 efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The BCP56T series belongs to Nexperia's medium-power bipolar transistor product line, engineered for robust linear and switching operation in space-constrained, thermally demanding applications such as power management and interface driver stages.

FAQ

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

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 75 °C ambient, maximum P_tot drops to ~1.0 W on a 4-layer PCB with 1 cm² collector pad, based on the 70 K/W R_th(j-a) curve.

Can BCP56-10TX replace BCP56TX in existing designs?

Yes, with design verification. BCP56-10TX has a narrower h_FE range (63–160) than BCP56TX (63–250), so base drive circuits must ensure sufficient I_B to guarantee saturation across the full 63–160 bin. No changes to pinout, voltage ratings, or thermal layout are needed.

Is BCP56-10TX qualified for automotive applications?

No. Per Nexperia's revision history (Rev. 3, July 2022), the BCP56T series was explicitly changed to non-automotive qualification. Automotive-grade alternatives-such as the -Q qualified variants-must be selected separately and verified against AEC-Q101 requirements.

How does PCB layout affect BCP56-10TX's power dissipation capability?

PCB layout directly determines R_th(j-a): it ranges from 70 K/W (4-layer board, 1 cm² collector pad) to 209 K/W (single-layer FR4, standard footprint). A 1 cm² copper pour on inner layers reduces thermal resistance by ~66%, allowing ~0.6 W more dissipation at the same junction temperature rise compared to minimal layout.

BCP56-10TX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BCP56T

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:: 600 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

BCP56-10TX FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your BCP56-10TX 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 BCP56-10TX?

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

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

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

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

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

Return procedure for BCP56-10TX:

1.Submit a request within 90 days.

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

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