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

Nexperia USA Inc. BCX53TF

Name: BCX53TF
Brand: Nexperia USA Inc.
SKU: BCX53TF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX53TF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX53TF.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:16,743

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Product details

Overview

BCX53TF from Nexperia is a PNP bipolar power transistor in SOT89 (SC-62) package, rated for −80 V V_CEO, −1 A continuous collector current, and 1100 mW power dissipation with 6 cm² copper pad. It delivers h_FE = 63–250 at V_CE = −2 V / I_C = −150 mA and supports high-side switching in linear regulators and MOSFET driver stages.

For engineers reviewing the BCX53TF datasheet, BCX53TF pinout, BCX53TF application, or BCX53TF equivalent, this device is selected for automotive-grade PNP switching where robust thermal performance, AEC-Q101 qualification, and stable DC current gain across temperature are critical design requirements.

Technical Context

The BCX53TF operates as a medium-power PNP switch with fixed-emitter configuration and base-controlled conduction. Its −80 V V_CEO rating enables use in 48 V and 24 V automotive supply rails, while its −2 A peak collector current (t_p ≤ 1 ms) supports transient load handling in power management circuits.

Thermal resistance R_th(j-a) is 114 K/W when mounted on FR4 PCB with 6 cm² collector pad - enabling sustained 1 A operation without active cooling. The device's f_T = 140 MHz and C_c = 7 pF support moderate-frequency switching up to ~10 MHz in Class-A amplifiers or gate drive buffers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−80 V: Supports reliable blocking in 48 V automotive and industrial power rails
I_C	−1 A continuous: Enables direct driving of small relays, LED strings, or MOSFET gates
h_FE	63–250 @ V_CE = −2 V, I_C = −150 mA: Ensures predictable base drive sizing across production lots
P_tot	1100 mW @ T_amb ≤ 25 °C w/ 6 cm² pad: Allows passive thermal management in space-constrained SMT layouts
f_T	140 MHz: Permits stable operation in low-noise pre-amplifier and fast-switching driver stages
AEC-Q101	Qualified: Meets stress-test requirements for automotive under-hood and body-control applications

Pinout & Package

SOT89 (SC-62) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, integrated heat slug on collector terminal for thermal conduction to PCB.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current return path; connected to system ground or negative rail in high-side configurations
2	Collector	Main power output terminal; soldered to large copper area for thermal dissipation and current routing
3	Base	Control input; requires current-limited drive (≤200 mA DC, ≤300 mA pulse) to avoid saturation loss

Key Features

Feature	Design Value
High V_CEO rating	−80 V enables use in 48 V battery systems without derating or series stacking
Three h_FE variants	BCX53T (63–250), BCX53-10T (63–160), BCX53-16T (100–250) allow precise gain matching per circuit requirement
Power dissipation scalability	P_tot scales from 500 mW (standard footprint) to 1100 mW (6 cm² pad), supporting flexible thermal layout options
AEC-Q101 qualification	Validated for automotive temperature range (−55 °C to +150 °C) and mechanical stress compliance

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass element in adjustable LDOs delivering 1–3 A at 3.3 V to 12 V from higher input rails.

IC Role / Device Role / Timing Role: PNP pass transistor regulating output by modulating emitter-collector voltage drop.

Use Value: Low V_CE(sat) (≤500 mV @ I_C = −500 mA) minimizes dropout and thermal load in compact regulator designs.

Use Scenario: Level-shifting and current-boosting stage driving N-channel MOSFET gates in half-bridge motor controllers.

IC Role / Device Role / Timing Role: High-current PNP switch sinking gate charge during turn-off to ensure fast, controlled MOSFET discharge.

Use Value: −2 A peak current capability handles gate charge surge without secondary clamping, improving switching timing accuracy.

High-Side Switches

Power Amplifiers

Use Scenario: Load switch controlling 12 V/1 A solenoids or fans in automotive body electronics modules.

IC Role / Device Role / Timing Role: PNP configured as high-side switch with base driven by microcontroller GPIO via resistor network.

Use Value: AEC-Q101 qualification ensures reliability in vibration-prone environments; −80 V rating provides margin against load-dump transients.

Use Scenario: Class-A audio preamplifier or sensor signal conditioning stage requiring low-noise, linear gain.

IC Role / Device Role / Timing Role: Discrete PNP amplifier with emitter degeneration for stable bias and harmonic distortion control.

Use Value: f_T = 140 MHz and low C_c = 7 pF preserve bandwidth up to 10 MHz while maintaining phase margin in feedback loops.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX53-16T	Higher h_FE min = 100 (vs. BCX53TF's 63); identical V_CEO, I_C, package, and AEC-Q101 status	Better suited for low-base-drive circuits where microcontroller GPIO current is limited	Select when tighter h_FE tolerance and reduced base drive burden are required
ZTX753	Same SOT89 package but −100 V V_CEO, −1.5 A I_C, non-AEC-Q101; h_FE = 100–800	Higher voltage/current headroom but lacks automotive qualification and has wider h_FE spread	Choose only for industrial/non-automotive designs needing extended voltage margin

Compared with BCX53-16T and ZTX753, BCX53TF offers balanced h_FE range, guaranteed AEC-Q101 compliance, and optimized thermal performance on standard PCB layouts - making it the preferred choice for cost-sensitive, thermally constrained automotive power switches.

Availability

BCX53TF is available at Aetrix Electronics and suitable for automotive body control units, industrial linear regulators, and MOSFET gate driver circuits requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for BCX53TF 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 leadership in automotive-qualified components and advanced packaging.

The BCX53T series belongs to Nexperia's AEC-Q101-qualified PNP power transistor family, engineered specifically for robust high-side switching and linear regulation in automotive and industrial power systems.

FAQ

What is the maximum safe operating junction temperature for BCX53TF?

The absolute maximum junction temperature (T_j) is 150 °C per IEC 60134 limiting values. Operation above this threshold risks permanent degradation of h_FE and increased leakage. Derating is required above 25 °C ambient - e.g., at 75 °C ambient, max P_tot drops to ~800 mW with 6 cm² pad.

Can BCX53TF replace BCX53-10T in an existing design?

Yes - BCX53TF and BCX53-10T share identical package, pinout, V_CEO, I_C, and thermal specs; only h_FE differs (63–250 vs. 63–160). If the original design uses conservative base drive, BCX53TF's wider gain range may improve margin without circuit changes.

Is BCX53TF suitable for PWM switching at 20 kHz?

Yes - with f_T = 140 MHz and V_CE(sat) ≤ 500 mV, BCX53TF supports clean 20 kHz switching in Class-D drivers or SMPS auxiliary stages. Ensure base drive rise/fall times < 100 ns and limit duty cycle to maintain average power within 1100 mW derated for PCB layout.

Does BCX53TF require a heatsink in typical SMT applications?

No external heatsink is needed if mounted on FR4 PCB with ≥6 cm² copper area connected to pin 2 (collector). With that layout, 1 A DC operation stays within T_j limits at ≤50 °C ambient. Smaller pads require derating - e.g., 1 cm² pad limits continuous I_C to ~0.6 A at 25 °C ambient.

BCX53TF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-243AA

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:: 500 mW

Frequency - Transition:: 140MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

BCX53TF FAQ

1.How can I place an order for BCX53TF through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX53TF 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 BCX53TF reliable?

The price and inventory of BCX53TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX53TF is usually 5 days.

3.What payment methods are accepted for BCX53TF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX53TF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX53TF?

BCX53TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX53TF 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 BCX53TF?

For technical support, including BCX53TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX53TF requirements.

6.How does Aetrix verify that BCX53TF is sourced from the original manufacturer or authorized distributors?

All BCX53TF 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 BCX53TF meets industry standards.

7.What is the process for return or replacement of BCX53TF?

All BCX53TF units undergo pre-shipment inspection (PSI). If there is an issue with BCX53TF, 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 BCX53TF part is unused and in its original packaging.

Return procedure for BCX53TF:

1.Submit a request within 90 days.

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

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