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

Nexperia USA Inc. BCX51-10TF

Name: BCX51-10TF
Brand: Nexperia USA Inc.
SKU: BCX51-10TF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX51-10TF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX51-10TF.pdf

Description:: TRANS PNP 45V 1A SOT-89

Quantity:: RFQ Add To RFQ list

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Inventory:9,581

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Product details

Overview

BCX51-10TF from Nexperia is a PNP bipolar power transistor in SOT89 (SC-62) package, rated for −45 V V_CEO, −1 A continuous collector current, and 160–250 h_FE at −150 mA / −2 V, designed for high-side switching and linear voltage regulation in automotive-grade power management circuits.

For engineers reviewing the BCX51-10TF datasheet, BCX51-10TF pinout, BCX51-10TF application, or BCX51-10TF equivalent, this device supports robust thermal performance on FR4 PCBs with up to 1100 mW dissipation (6 cm² collector pad), AEC-Q101 qualification, and precise DC gain binning for stable biasing in analog and switching power stages.

Technical Context

This PNP transistor operates with open-base collector-emitter breakdown of −45 V and emitter-base breakdown of −5 V, enabling reliable operation in high-side configurations where emitter sits at rail potential. Its pulsed peak collector current reaches −2 A (t_p ≤ 1 ms), supporting transient load handling in MOSFET gate drivers and regulator pass elements.

DC current gain is binned per variant: BCX51-10TF delivers h_FE = 63–160 at V_CE = −2 V, I_C = −150 mA (pulsed), ensuring predictable base drive requirements. Saturation voltage is specified at −500 mV (I_C = −500 mA, I_B = −50 mA), confirming low conduction loss in switching applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V - Maximum safe collector-emitter voltage with base open; defines high-side switch voltage headroom
I_C (continuous)	−1 A - Continuous collector current rating; sets maximum steady-state load current capability
h_FE	63–160 - DC current gain range at −150 mA / −2 V; determines required base drive current precision
V_CE(sat)	−500 mV - Collector-emitter saturation voltage at −500 mA / −50 mA base drive; impacts conduction loss and thermal rise
P_tot (max)	1100 mW - Total power dissipation with 6 cm² copper pad; enables higher ambient temperature operation in compact layouts
f_T	140 MHz - Transition frequency at −5 V / −50 mA / 100 MHz; supports moderate-speed switching and amplification
AEC-Q101	Qualified - Meets automotive stress test requirements for discrete semiconductors; suitable for under-hood and body control modules

Pinout & Package

SOT89 (SC-62) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, single-sided FR4 mounting, tin-plated terminations. Thermal performance varies with collector pad area (standard / 1 cm² / 6 cm²).

Pin	Circuit Role	Design Meaning
1	Emitter	Current exit terminal; connected to positive rail in high-side switch configuration
2	Collector	Current entry terminal; tied to load or regulator output; thermally coupled to PCB pad
3	Base	Control input; requires current-limited drive to achieve target h_FE-dependent I_C

Key Features

Feature	Design Value
Three h_FE bins	BCX51-10TF offers 63–160 h_FE, enabling consistent bias design across production batches without recalibration
AEC-Q101 qualification	Validated for automotive use including temperature cycling, HTRB, and ESD testing-reduces qualification effort for Tier 1 suppliers
High power dissipation	Up to 1100 mW with 6 cm² copper pad allows operation at 125 °C ambient in space-constrained power stages
Low V_CE(sat)	−500 mV at −500 mA ensures <0.25 W conduction loss, minimizing heatsink requirements in linear regulators
Robust voltage ratings	−45 V V_CEO and V_CBO support 24 V and 36 V industrial and commercial systems with margin

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Pass transistor in adjustable LDO or series regulator supplying 3.3 V/5 V rails from 12 V/24 V input.

IC Role / Device Role / Timing Role: PNP pass element controlling output voltage via emitter-follower configuration with feedback to base.

Use Value: Low V_CE(sat) minimizes dropout voltage; binned h_FE ensures stable loop gain and load regulation across temperature.

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-side level shifter sinking gate charge during turn-off; complements low-side driver ICs.

Use Value: −45 V rating withstands inductive kickback; −2 A pulse rating handles fast gate discharge transients.

High-Side Switches

Power Management

Use Scenario: Load switch enabling/disabling 12 V accessories (e.g., sensors, actuators) in automotive body electronics.

IC Role / Device Role / Timing Role: PNP switch controlled by microcontroller GPIO through base resistor; emitter tied to battery rail.

Use Value: AEC-Q101 qualification ensures reliability in vibration-prone environments; −1 A rating supports typical accessory loads.

Use Scenario: Current mirror reference or bias generator in multi-rail PMIC subsystems for infotainment or ADAS ECUs.

IC Role / Device Role / Timing Role: Precision current source/sink element leveraging matched h_FE and thermal tracking in SOT89 footprint.

Use Value: Tight h_FE bin (63–160) improves mirror accuracy; SOT89 thermal coupling aids matching stability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX51-16TF	h_FE = 100–250 (higher gain bin); otherwise identical ratings and package	Better suited for low-base-drive designs (e.g., microcontroller GPIO direct drive) where higher gain reduces base resistor power	Select when base drive current is limited and tighter h_FE consistency above 100 is required
BC807-16 SMD	Smaller SOT23 package; lower I_C (−500 mA), lower P_tot (300 mW), same h_FE bin	Only appropriate for low-power signal switching-not for 1 A load or linear regulation	Choose only for space-constrained logic-level switching where thermal and current demands are significantly lower

Compared with BCX51-10TF, BCX51-16TF provides higher and more consistent current gain for reduced base drive burden, while BC807-16 trades current/power capability for footprint reduction-neither is a drop-in replacement without circuit revalidation.

Availability

BCX51-10TF is available at Aetrix Electronics and suitable for automotive body control modules, industrial linear regulators, and high-side power switches requiring stable component supply, AEC-Q101 compliance, and SOT89 thermal performance.

Supply support for BCX51-10TF 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.

BCX51-10TF belongs to the BCX51T series of AEC-Q101-qualified PNP power transistors engineered for high-reliability linear and switching power applications in harsh environments.

FAQ

What is the maximum allowable junction temperature for BCX51-10TF?

The absolute maximum junction temperature (T_j) is 150 °C, as defined in IEC 60134 limiting values. Operation at this limit requires full derating of power dissipation per Figure 1, and sustained operation above 125 °C ambient should use the 6 cm² collector pad layout to maintain thermal resistance below 114 K/W.

Is BCX51-10TF suitable for use in a linear regulator pass element?

Yes-its −45 V V_CEO, −1 A I_C, −500 mV V_CE(sat), and binned h_FE make it well-suited as a pass transistor in adjustable linear regulators. Designers must ensure adequate PCB copper area (≥6 cm² for collector) to manage power dissipation at full load and ambient temperatures up to 125 °C.

How does the BCX51-10TF differ from the BCX51-16TF variant?

Both share identical voltage, current, and thermal ratings, but BCX51-10TF has h_FE = 63–160 while BCX51-16TF is binned to h_FE = 100–250 at −150 mA / −2 V. This higher minimum gain reduces required base drive current and improves stability in current-source or amplifier configurations.

Can BCX51-10TF be used in place of an NPN transistor like BCX54-16T?

No-it is a PNP device with opposite polarity and complementary function. Substituting BCX51-10TF for an NPN such as BCX54-16T would invert circuit behavior (e.g., high-side vs. low-side switching) and likely cause failure. The two are intended as complementary pairs, not replacements.

BCX51-10TF 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):: 45 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:: -

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

BCX51-10TF FAQ

1.How can I place an order for BCX51-10TF through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX51-10TF 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 BCX51-10TF reliable?

The price and inventory of BCX51-10TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX51-10TF is usually 5 days.

3.What payment methods are accepted for BCX51-10TF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX51-10TF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX51-10TF?

BCX51-10TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX51-10TF 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 BCX51-10TF?

For technical support, including BCX51-10TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX51-10TF requirements.

6.How does Aetrix verify that BCX51-10TF is sourced from the original manufacturer or authorized distributors?

All BCX51-10TF 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 BCX51-10TF meets industry standards.

7.What is the process for return or replacement of BCX51-10TF?

All BCX51-10TF units undergo pre-shipment inspection (PSI). If there is an issue with BCX51-10TF, 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 BCX51-10TF part is unused and in its original packaging.

Return procedure for BCX51-10TF:

1.Submit a request within 90 days.

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

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