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Nexperia USA Inc. BCX51-10F
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- Part No.:
- BCX51-10F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX51-10F.pdf
- Description:
- TRANS PNP 45V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:7,779
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Product details
Overview
BCX51-10F from Nexperia is a PNP medium power transistor in SOT89 surface-mount package, rated for −45 V VCEO, −1 A continuous collector current, and −2 A peak pulse current. It features hFE selection of 63–160 at VCE = −2 V and IC = −150 mA, AEC-Q101 qualification, and exposed collector pad for thermal and electrical performance-used in high-side switches and linear voltage regulators.
For engineers reviewing the BCX51-10F datasheet, BCX51-10F pinout, BCX51-10F application, or BCX51-10F equivalent, this page delivers verified package mapping (SOT89), confirmed pin functions (Emitter–Collector–Base), thermal resistance (Rth(j-a) = 250 K/W standard footprint), DC gain range, and automotive-grade reliability context.
Technical Context
This device operates as a medium-power PNP bipolar junction transistor optimized for linear and switching applications where robust thermal handling and stable DC current gain are required. Its SOT89 package integrates a large collector pad to enhance heat transfer, enabling higher power dissipation than standard SMD transistors of similar size.
The BCX51-10F belongs to the −45 V/−1 A PNP family with three hFE variants (−10, −16, and unmarked); the "−10" suffix denotes the 63–160 hFE bin. It supports operation from −55 °C to +150 °C ambient and meets AEC-Q101 stress test requirements for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum safe collector-emitter voltage with base open; defines breakdown margin in high-side switch or regulator top-rail placement. |
| IC | −1 A - Continuous DC collector current rating; sets maximum steady-state load drive capability in power management circuits. |
| ICM | −2 A - Peak single-pulse collector current (tp ≤ 1 ms); supports short-term surge handling in motor drivers or fault conditions. |
| hFE | 63–160 @ VCE = −2 V, IC = −150 mA - Confirmed DC current gain range for −10 variant; enables predictable base drive sizing in amplifier or switch designs. |
| Ptot | 0.50 W @ FR4, standard footprint - Total power dissipation limit at 25 °C ambient; derates to zero at 150 °C junction temperature per curve in Fig 2. |
| Rth(j-a) | 250 K/W @ FR4, standard footprint - Junction-to-ambient thermal resistance; determines temperature rise under load without heatsink or enhanced copper. |
| VCE(sat) | −0.5 V @ IC = −500 mA, IB = −50 mA - Saturation voltage defining conduction loss in switching applications; impacts efficiency in battery-driven devices. |
Pinout & Package
SOT89 (JEITA SC-62 / JEDEC TO-243) plastic surface-mounted package with 3 leads and an exposed collector pad for improved thermal and electrical conductivity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current exit terminal for PNP operation; connects to load return or ground reference in high-side configurations. |
| 2 | Collector | Main current input terminal; electrically and thermally connected to exposed pad for low-impedance path and heat spreading. |
| 3 | Base | Control terminal for biasing; requires current-limited drive to achieve specified hFE-based amplification or saturation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in engine control, body electronics, and ADAS subsystems. |
| Exposed collector pad | Provides low thermal resistance path to PCB copper; improves power handling by up to 90% vs. non-exposed SMD packages under identical layout conditions. |
| Three hFE selections | Bin-coded variants (−10, −16, unmarked) allow precise gain matching across production batches-critical for consistent amplifier gain or switch timing. |
| High power dissipation | 0.95 W achievable with 1 cm² collector pad on FR4; supports >1 W operation in compact layouts without external heatsinks. |
| Leadless SMT construction | SOT89 footprint enables automated assembly and space-constrained board designs while maintaining medium-power capability beyond typical SOT23 limits. |
Applications
| Linear Voltage Regulators | High-Side Switches |
|---|---|
Use Scenario: Used as pass transistor in adjustable LDOs or fixed-output linear regulators supplying 3.3 V or 5 V rails in automotive ECUs. IC Role / Device Role / Timing Role: PNP pass element controlling output voltage via base bias; handles full load current with minimal dropout. Use Value: Stable regulation under varying load due to high hFE and low VCE(sat); AEC-Q101 ensures lifetime reliability in under-hood environments. |
Use Scenario: Controls power delivery to sensors, actuators, or lighting modules in 12 V vehicle systems. IC Role / Device Role / Timing Role: High-side switch placed between battery rail and load; driven by microcontroller GPIO through base resistor network. Use Value: −45 V rating provides margin against load-dump transients; exposed collector pad maintains junction temperature below 150 °C at 1 A continuous. |
| Battery-Driven Devices | MOSFET Drivers |
Use Scenario: Enables power sequencing and enable control in portable medical monitors, handheld test equipment, and industrial data loggers. IC Role / Device Role / Timing Role: Low-quiescent-current switch isolating subsystems during sleep mode; leverages low ICBO (≤−100 nA) for minimal leakage. Use Value: −1 A rating supports peak loads like display backlight or RF transmission bursts; SOT89 footprint saves board area versus TO-92 alternatives. |
Use Scenario: Drives N-channel MOSFET gates in half-bridge motor controllers or DC-DC synchronous rectifiers. IC Role / Device Role / Timing Role: Level-shifting driver stage translating logic-level signals to high-side gate voltages; configured in emitter-follower topology. Use Value: Fast fT of 145 MHz ensures adequate bandwidth for PWM frequencies up to 100 kHz; low VBE (≤−1 V) minimizes drive loss. |
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 |
|---|---|---|---|
| BCP51-10 | SOT223 package (4-pin), higher Ptot (0.65 W standard), same VCEO/IC/hFE ratings | Better thermal performance in high-power or high-ambient scenarios; larger footprint limits density | Select when board layout allows SOT223 and >0.5 W dissipation is needed without added copper. |
| BC51PA-10 | SOT1061 package (3-terminal, 2×2 mm), lower Rth(j-a) (298 K/W standard), thinner profile (0.65 mm max) | Ultra-compact fit for wearables or stacked PCBs; reduced power handling (0.42 W standard) | Select when space is critical and thermal load stays below 300 mW; verify solder joint reliability per reflow profile. |
Compared with BCP51-10 and BC51PA-10, BCX51-10F offers the best balance of thermal capability (0.50 W), footprint compactness (SOT89), and automotive qualification-making it optimal for cost-sensitive, medium-power automotive and industrial switching applications where board area and reliability are both constrained.
Availability
BCX51-10F is available at Aetrix Electronics and suitable for linear voltage regulators, high-side switches, and battery-driven devices requiring stable component supply, AEC-Q101 compliance, and SMT manufacturability.
Supply support for BCX51-10F 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 semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
The BCX51 series belongs to Nexperia's medium-power discrete transistor product line, engineered for robust switching and linear operation in space-constrained, thermally demanding applications-including automotive power management and industrial control systems.
FAQ
What is the exact pin configuration of BCX51-10F in the SOT89 package?
BCX51-10F uses a standardized SOT89 pinout: Pin 1 = Emitter, Pin 2 = Collector (connected to exposed pad), Pin 3 = Base. This matches JEITA SC-62 and JEDEC TO-243 outlines, and is confirmed in Table 3 of the official Nexperia datasheet Rev. 9.
Is BCX51-10F suitable for automotive applications?
Yes-BCX51-10F is AEC-Q101 qualified per Section 8.1 of the datasheet, having passed stress tests for temperature cycling, high-temperature reverse bias, and ESD. It operates reliably from −55 °C to +150 °C and is approved for use in engine control units, body electronics, and infotainment power stages.
How does the hFE selection "−10" differ from "−16" in BCX51 variants?
The "−10" suffix indicates a DC current gain (hFE) range of 63–160 at VCE = −2 V and IC = −150 mA; "−16" specifies 100–250 under identical conditions. Both are binned during final test-"−10" suits designs needing moderate, predictable gain with tighter tolerance; "−16" targets higher amplification or lower base drive requirements.
Can BCX51-10F replace BC557 or BC558 in existing designs?
No-BC557/BC558 are TO-92 packaged general-purpose PNP transistors rated for −50 V/−100 mA, with significantly lower power handling and no AEC-Q101 qualification. BCX51-10F has −45 V/−1 A ratings, SOT89 thermal design, and automotive qualification; direct replacement requires PCB layout, thermal, and drive circuit redesign.
BCX51-10F 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:
- 145MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BCX51-10F FAQ
1.How can I place an order for BCX51-10F through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX51-10F 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 BCX51-10F reliable?
The price and inventory of BCX51-10F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX51-10F is usually 5 days.
3.What payment methods are accepted for BCX51-10F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX51-10F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX51-10F?
BCX51-10F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX51-10F 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 BCX51-10F?
For technical support, including BCX51-10F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX51-10F requirements.
6.How does Aetrix verify that BCX51-10F is sourced from the original manufacturer or authorized distributors?
All BCX51-10F 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 BCX51-10F meets industry standards.
7.What is the process for return or replacement of BCX51-10F?
All BCX51-10F units undergo pre-shipment inspection (PSI). If there is an issue with BCX51-10F, 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 BCX51-10F part is unused and in its original packaging.
Return procedure for BCX51-10F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCX51-10F Tags
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