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

Nexperia USA Inc. BCP53-QX

Name: BCP53-QX
Brand: Nexperia USA Inc.
SKU: BCP53-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCP53-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCP53-QX.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:1,000

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Product details

Overview

BCP53-Q from Nexperia is a PNP medium-power bipolar junction transistor in SOT223 (SC-73) package, rated for −80 V V_CEO, −1 A continuous collector current, and 1.35 W power dissipation with 6 cm² copper pad. It delivers h_FE = 63–250 at I_C = −150 mA and is AEC-Q101 qualified for automotive linear voltage regulators and high-side switches.

For engineers reviewing the BCP53-Q datasheet, BCP53-Q pinout, BCP53-Q application, or BCP53-Q equivalent, this device is selected for robust PNP switching in battery-powered systems, MOSFET gate driving, and thermally constrained power management where DC gain stability across temperature and pulse-current capability are critical.

Technical Context

The BCP53-Q operates as a single PNP silicon transistor with base-controlled current amplification. Its structure supports linear regulation and saturated switching modes, with V_CE(sat) ≤ −0.5 V at I_C = −500 mA / I_B = −50 mA and f_T = 145 MHz enabling moderate-frequency driver applications.

Thermal performance is defined by three mounting conditions: R_th(j-a) = 93 K/W (6 cm² pad), 125 K/W (1 cm² pad), and 192 K/W (standard footprint). Junction temperature is limited to 150 °C, and storage range extends from −65 °C to 150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−80 V - Maximum safe collector-emitter voltage with open base; defines high-side switch blocking capability in 24 V/48 V automotive rails.
I_C	−1 A - Continuous DC collector current rating; supports load switching up to ~12 W at 12 V with adequate heatsinking.
h_FE	63–250 - DC current gain range at V_CE = −2 V, I_C = −150 mA; enables predictable base drive sizing for stable biasing.
P_tot	1.35 W - Max power dissipation with 6 cm² copper pad; sets thermal design boundary for PCB layout in compact power stages.
f_T	145 MHz - Transition frequency at V_CE = −5 V, I_C = −50 mA; supports fast switching in MOSFET driver and amplifier feedback paths.
V_CE(sat)	≤ −0.5 V - Collector-emitter saturation voltage at I_C = −500 mA / I_B = −50 mA; minimizes conduction loss in high-current on-state operation.

Pinout & Package

SOT223 (SC-73) surface-mount plastic package with 4 leads, 2.3 mm pitch, and 6.5 mm × 3.5 mm × 1.65 mm body dimensions. The exposed collector tab (pins 2 and 4) serves as primary thermal path and electrical connection point.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for current amplification; requires current-limited drive to avoid exceeding I_B = −0.3 A absolute max.
2	Collector	Main high-current output node; electrically and thermally connected to exposed metal tab for PCB heat spreading.
3	Emiter	Reference terminal tied to higher potential rail in PNP configuration; carries full load current in high-side switch topology.
4	Collector	Second collector connection-internally bonded to pin 2-to enhance thermal conduction and current handling capacity.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive underhood environments per stress test standard; supports production deployment without additional qualification effort.
Three h_FE variants	BCP53-Q (63–250), BCP53-10-Q (63–160), BCP53-16-Q (100–250); allows precise gain matching for analog regulation or consistent switching thresholds.
High power dissipation	1.35 W with 6 cm² copper pad-2× higher than standard SOT223 baseline-enables higher load currents without forced cooling.
Low V_CE(sat)	≤ −0.5 V at I_C/I_B = 10 ensures <1 W conduction loss at 1 A, reducing thermal burden in battery-driven devices.

Applications

Linear Voltage Regulators

High-Side Switches

Use Scenario: Adjustable 5–24 V linear regulator using external pass transistor and error amplifier feedback.

IC Role / Device Role / Timing Role: PNP pass element controlling output current flow from input to regulated output rail.

Use Value: Stable h_FE and low V_CE(sat) minimize dropout voltage and thermal drift over −40 °C to +125 °C ambient.

Use Scenario: 12 V/24 V battery-fed load enable circuit with microcontroller GPIO control.

IC Role / Device Role / Timing Role: High-side current switch placing load between supply and ground, driven via base resistor network.

Use Value: −80 V V_CEO withstands load-dump transients; dual-collector thermal path sustains 1 A pulsed loads without derating.

Battery-Driven Devices

MOSFET Drivers

Use Scenario: Power sequencing and reverse-polarity protection in portable medical or industrial handheld units.

IC Role / Device Role / Timing Role: Series PNP switch isolating battery from system during shutdown or fault conditions.

Use Value: Low leakage (I_CBO ≤ −100 nA at 25 °C) preserves battery life; −5 V V_EBO rating accommodates common-base sensing configurations.

Use Scenario: Level-shifting gate driver stage for N-channel high-side MOSFETs in half-bridge motor controllers.

IC Role / Device Role / Timing Role: Fast-turn-off PNP pull-down stage complementing NPN pull-up to reduce gate drive loop inductance.

Use Value: 145 MHz f_T ensures sub-100 ns switching transitions; dual-collector layout improves thermal response during repetitive gate charging.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCP52-Q	−60 V V_CEO, same SOT223 package and h_FE range; lower breakdown voltage limits use to ≤24 V systems.	Not suitable for 48 V automotive load-dump scenarios requiring ≥−80 V rating.	Select when cost sensitivity outweighs voltage margin and thermal requirements are less demanding.
MBT3906DW1T1G	−40 V V_CEO, dual SOT-363 package, h_FE = 100–300; lower voltage rating and smaller thermal mass.	Restricted to low-voltage logic-level switching; unsuitable for power regulation or high-side switching above 12 V.	Choose only for space-constrained dual-transistor signal routing-not for power handling or automotive qualification.

Compared with BCP52-Q and MBT3906DW1T1G, the BCP53-Q uniquely combines −80 V rating, AEC-Q101 qualification, and 1.35 W thermal capability in SOT223-making it the sole option among these three for thermally demanding, safety-critical 48 V automotive high-side switching.

Availability

BCP53-Q is available at Aetrix Electronics and suitable for linear voltage regulators, high-side switches, and battery-driven devices requiring stable component supply, automotive-grade reliability, and SOT223-compatible thermal management.

Supply support for BCP53-Q 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 BCP53-Q belongs to Nexperia's AEC-Q101-qualified medium-power transistor family, engineered specifically for robust linear regulation, high-side switching, and MOSFET driving in thermally constrained automotive and industrial power systems.

FAQ

Is BCP53-Q pin-compatible with other SOT223 PNP transistors?

Yes-BCP53-Q uses standard SOT223 pinout (1=Base, 2=Collector, 3=Emiter, 4=Collector) and shares mechanical footprint with industry-standard SOT223 devices. However, electrical parameters-including V_CEO, h_FE, and thermal resistance-differ significantly from non-AEC-Q101 or lower-voltage alternatives, so functional substitution requires validation of gain, saturation voltage, and transient voltage tolerance.

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is −0.3 A, but continuous operation above −50 mA is not recommended without thermal analysis. At I_B = −50 mA and I_C = −500 mA, V_CE(sat) remains ≤ −0.5 V, ensuring efficient saturation. Exceeding −0.3 A risks permanent degradation due to localized heating at the bond wire interface.

How does PCB copper area affect BCP53-Q's power handling?

Power dissipation scales directly with copper area: 0.65 W (no extra pad), 1.00 W (1 cm² pad), and 1.35 W (6 cm² pad). Using less than 1 cm² reduces safe operating area in linear mode; for 1 A continuous current, ≥6 cm² is required to maintain T_j ≤ 150 °C at 70 °C ambient. Thermal vias under the collector tab further improve performance.

Can BCP53-Q replace BC807-40 in high-current applications?

No-BC807-40 is an SOT23 device rated for only −45 V and −500 mA, with P_tot ≤ 310 mW. BCP53-Q offers triple the voltage rating, double the current, and >4× the power dissipation. Substituting it into an SOT23 footprint is mechanically impossible and electrically unsafe due to mismatched gain, capacitance, and thermal behavior.

BCP53-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BCP53-Q

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

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:: 145MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

BCP53-QX FAQ

1.How can I place an order for BCP53-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for BCP53-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 BCP53-QX reliable?

The price and inventory of BCP53-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP53-QX is usually 5 days.

3.What payment methods are accepted for BCP53-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP53-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCP53-QX?

BCP53-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCP53-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 BCP53-QX?

For technical support, including BCP53-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP53-QX requirements.

6.How does Aetrix verify that BCP53-QX is sourced from the original manufacturer or authorized distributors?

All BCP53-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 BCP53-QX meets industry standards.

7.What is the process for return or replacement of BCP53-QX?

All BCP53-QX units undergo pre-shipment inspection (PSI). If there is an issue with BCP53-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 BCP53-QX part is unused and in its original packaging.

Return procedure for BCP53-QX:

1.Submit a request within 90 days.

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

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