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Nexperia USA Inc. BCX54-10TF
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- Part No.:
- BCX54-10TF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX54-10TF.pdf
- Description:
- TRANS NPN 45V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:8,566
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Product details
Overview
BCX54-10TF from Nexperia is an AEC-Q101 qualified NPN power bipolar transistor in SOT89 (SC-62) package, rated for 45 V VCEO, 1 A continuous collector current, and 160–250 hFE at IC = 150 mA / VCE = 2 V. It serves as a medium-power low-side switch or MOSFET driver in automotive and industrial power management circuits.
For engineers reviewing the BCX54-10TF datasheet, BCX54-10TF pinout, BCX54-10TF application, or BCX54-10TF equivalent, this device is selected for linear voltage regulators, amplifier stages, and robust 1 A switching where thermal performance on FR4 PCBs with 1 cm² collector pad matters.
Technical Context
This NPN transistor operates with fixed-base drive topology and exhibits pulsed peak collector current capability up to 2 A (tp ≤ 1 ms). Its DC current gain is binned to hFE = 63–160 (BCX54-10T grade), enabling predictable saturation behavior under IC/IB = 10 conditions.
Thermal resistance Rth(j-a) is 157 K/W when mounted on FR4 with 1 cm² collector copper pad - a key design parameter for derating above 75 °C ambient. The device meets AEC-Q101 stress test requirements for automotive use, including temperature cycling and humidity testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in low-side switch designs. |
| IC | 1 A continuous - Sustained load current capacity; supports 12 V/5 W linear regulator or gate drive for ≤10 nF MOSFETs. |
| hFE | 63–160 at VCE = 2 V, IC = 150 mA - Binning ensures consistent base drive sizing across production lots. |
| VCE(sat) | ≤500 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss in switching applications. |
| Ptot | 800 mW on FR4 with 1 cm² collector pad - Determines maximum power dissipation before thermal shutdown in compact layouts. |
| fT | 155 MHz - Enables use in audio-frequency amplifiers and fast-switching control loops up to ~10 MHz. |
Pinout & Package
SOT89 (SC-62) plastic surface-mount package: 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body; collector tab forms exposed thermal pad on lead 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current return path; connected to ground or low-side reference; requires low-inductance routing for switching stability. |
| 2 | Collector | Main power output terminal; electrically and thermally tied to large copper pour for heat dissipation and current handling. |
| 3 | Base | Control input; driven by logic-level or resistor-limited current source; sensitive to ESD and overdrive. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling, HAST, and mechanical shock tests. |
| Three hFE bins | Enables precise base resistor selection: BCX54-10T (63–160), BCX54-16T (100–250), BCX54T (63–250). |
| High Ptot on standard PCB | 1100 mW with 6 cm² collector pad - allows higher power operation without heatsink in space-constrained designs. |
| Low VBE and VCE(sat) | VBE ≤ 1 V and VCE(sat) ≤ 500 mV reduce drive power and conduction losses in 5–12 V systems. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable 3–12 V linear regulators delivering up to 1 A load current. IC Role / Device Role / Timing Role: NPN emitter-follower configured as series pass element, controlled by error amplifier feedback. Use Value: Low VCE(sat) maintains regulation headroom down to 0.5 V dropout; hFE binning ensures stable loop gain across temperature. |
Use Scenario: Driving N-channel MOSFET gates in 12 V automotive power distribution modules. IC Role / Device Role / Timing Role: Medium-current buffer stage translating microcontroller GPIO to 0.5–1 A gate charge pulses. Use Value: 2 A peak pulse rating handles gate charge of ≤100 nF FETs; AEC-Q101 compliance ensures reliability in vehicle subsystems. |
| Low-Side Switches | Power Amplifiers |
|
Use Scenario: Controlling solenoids, relays, or LED arrays in industrial PLC output modules. IC Role / Device Role / Timing Role: Saturated NPN switch sinking up to 1 A load current to ground with TTL-compatible base drive. Use Value: 150 °C Tj rating supports operation in sealed enclosures; 45 V rating accommodates 24 V supply transients. |
Use Scenario: Class-A audio preamplifier or sensor signal conditioning stage in automotive cabin electronics. IC Role / Device Role / Timing Role: Discrete gain stage with fT = 155 MHz and hFE > 100 ensuring bandwidth beyond 20 kHz. Use Value: Low Cc (4.5 pF) and high hFE minimize noise and distortion; SOT89 package enables dense layout near sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCX54-16TF | Higher hFE bin (100–250 vs. 63–160); identical VCEO, IC, package, and thermal specs. | Better suited for low-base-drive designs (e.g., direct MCU GPIO drive) where gain consistency at low IC matters. | Select when base current budget is constrained and tighter hFE spread at IC = 10–50 mA is required. |
| ZTX653 | TO-92 package; 60 V VCEO; 1 A IC; hFE = 100–300; no AEC-Q101 qualification. | Not suitable for automotive; used in cost-sensitive consumer power supplies where thermal pad is unnecessary. | Choose only for non-automotive, through-hole assembly or legacy board redesigns requiring same gain but different footprint. |
Compared with BCX54-10TF, BCX54-16TF offers higher and more consistent gain for reduced base drive, while ZTX653 trades AEC-Q101 compliance and SMT thermal performance for TO-92 cost and voltage margin - making BCX54-10TF optimal for automotive-grade SMT low-side switching with defined gain tolerance.
Availability
BCX54-10TF is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in automotive and industrial production programs.
Supply support for BCX54-10TF 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 mobile markets.
BCX54-10TF belongs to the BCX54T series of AEC-Q101 qualified NPN power transistors designed specifically for robust, medium-current switching and amplification in harsh-environment automotive power systems.
FAQ
What is the maximum allowable junction temperature for BCX54-10TF?
The absolute maximum junction temperature (Tj) is 150 °C per IEC 60134 limiting values. Operation above this threshold risks permanent degradation. Derating curves in Figure 1 show power must be reduced linearly above 75 °C ambient when using a 1 cm² collector pad.
Is BCX54-10TF pin-compatible with BCX54-16TF?
Yes - both share identical SOT89 (SC-62) pinout (Emitter–Collector–Base on pins 1–2–3) and mechanical dimensions. They differ only in hFE binning and marking code (B6 vs. B7), allowing drop-in replacement where gain requirements align.
Does BCX54-10TF require a heatsink in typical applications?
No external heatsink is required if PCB layout provides ≥1 cm² copper area connected to the collector pad. With that, Ptot = 800 mW is sustainable at 25 °C ambient; thermal resistance rises to 250 K/W on standard footprint (no extra pad), limiting usable power.
Can BCX54-10TF be used in avalanche mode?
No - it is not rated or characterized for repetitive avalanche operation. The datasheet specifies only V(BR)CEO = 45 V as a breakdown limit under DC conditions; exceeding this voltage risks irreversible failure even with current limiting.
BCX54-10TF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- 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
BCX54-10TF FAQ
1.How can I place an order for BCX54-10TF through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX54-10TF 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 BCX54-10TF reliable?
The price and inventory of BCX54-10TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX54-10TF is usually 5 days.
3.What payment methods are accepted for BCX54-10TF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX54-10TF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX54-10TF?
BCX54-10TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX54-10TF 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 BCX54-10TF?
For technical support, including BCX54-10TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX54-10TF requirements.
6.How does Aetrix verify that BCX54-10TF is sourced from the original manufacturer or authorized distributors?
All BCX54-10TF 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 BCX54-10TF meets industry standards.
7.What is the process for return or replacement of BCX54-10TF?
All BCX54-10TF units undergo pre-shipment inspection (PSI). If there is an issue with BCX54-10TF, 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 BCX54-10TF part is unused and in its original packaging.
Return procedure for BCX54-10TF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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