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Nexperia USA Inc. BCX56-10TX
- Part No.:
- BCX56-10TX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX56-10TX.pdf
- Description:
- TRANS NPN 80V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:108,415
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Product details
Overview
BCX56-10TX from Nexperia is an AEC-Q101 qualified NPN power bipolar transistor in SOT89 (SC-62) package, rated for 80 V VCEO, 1 A continuous collector current, and 1100 mW power dissipation with 6 cm² copper pad. It delivers hFE = 63–160 at VCE = 2 V and IC = 150 mA, and is used in linear voltage regulators and MOSFET gate drivers where medium-power switching and thermal robustness are required.
For engineers reviewing the BCX56-10TX datasheet, BCX56-10TX pinout, BCX56-10TX application, or BCX56-10TX equivalent, this device is selected for low-side switch stages, analog amplification nodes, and automotive-grade power management circuits requiring validated junction temperature limits up to 150 °C and pulsed peak current capability of 2 A.
Technical Context
This NPN transistor operates as a medium-power discrete switch or linear amplifier with fixed three-terminal topology. Its DC current gain is binned to 63–160 (BCX56-10T grade), and saturation voltage is specified at VCE(sat) ≤ 500 mV for IC = 500 mA and IB = 50 mA under pulsed conditions (tp ≤ 300 μs).
Thermal performance depends on PCB mounting: Rth(j-a) ranges from 114 K/W (6 cm² collector pad) to 250 K/W (standard footprint). It supports operation from −55 °C to +150 °C ambient, with breakdown voltages of 100 V VCBO, 80 V VCEO, and 5 V VEBO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in low-side switch designs. |
| IC (continuous) | 1 A - Continuous DC collector current rating; sets maximum steady-state load drive capability. |
| hFE | 63–160 - DC current gain at VCE = 2 V, IC = 150 mA; determines required base drive current for target IC. |
| VCE(sat) | ≤ 500 mV - Collector-emitter saturation voltage at IC = 500 mA, IB = 50 mA; directly impacts conduction loss and thermal rise. |
| Ptot | 1100 mW - Total power dissipation with 6 cm² copper pad; defines thermal design margin for sustained operation. |
| fT | 155 MHz - Transition frequency at VCE = 5 V, IC = 50 mA; indicates usable bandwidth for small-signal amplification. |
| Rth(j-a) | 114 K/W - Junction-to-ambient thermal resistance with optimized 6 cm² collector pad; enables thermal modeling for reliability validation. |
Pinout & Package
SOT89 (SC-62) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, with exposed collector tab for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter (E) | Current return path; connected to ground or low-side reference in switch configurations. |
| 2 | Collector (C) | Main power output terminal; electrically and thermally tied to PCB copper pad for heat dissipation. |
| 3 | Base (B) | Control input; requires current-limited drive (max IB = 200 mA DC) to avoid overdrive or thermal runaway. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics under stress test conditions. |
| Three hFE bins | Enables consistent gain matching across production lots-BCX56-10TX specifically offers 63–160 for predictable base drive sizing. |
| High Ptot with thermal pad | 1100 mW dissipation achievable using 6 cm² FR4 copper area-reduces need for heatsinks in space-constrained designs. |
| Low VCE(sat) | ≤ 500 mV at IC/IB = 10 ensures <1.5 W conduction loss at 3 A peak, improving efficiency in PWM-driven loads. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDO or series regulator delivering up to 1 A load current. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via emitter-follower configuration with feedback loop compensation. Use Value: Low VCE(sat) minimizes dropout voltage; high hFE reduces base drive burden on error amplifier. |
Use Scenario: Gate driver stage for N-channel power MOSFETs in motor control or DC-DC converters. IC Role / Device Role / Timing Role: Medium-current switch that sources gate charge rapidly while sinking discharge current through internal diode path. Use Value: 2 A peak current capability supports fast turn-on of 10 nF gate capacitance within 100 ns; AEC-Q101 ensures reliability in automotive gate drivers. |
| Low-Side Switches | Power Amplifiers |
|
Use Scenario: Load switch for automotive lighting, solenoids, or fan control with PWM dimming. IC Role / Device Role / Timing Role: Ground-referenced switching element controlled by microcontroller GPIO or logic-level signal. Use Value: 80 V VCEO accommodates 24 V systems with inductive kickback margin; 150 °C Tj(max) supports under-hood environments. |
Use Scenario: Class-A/AB audio preamplifier or sensor signal conditioning stage in industrial instrumentation. IC Role / Device Role / Timing Role: Small-signal amplification node with bias stability maintained by hFE binning and low leakage (ICBO ≤ 100 nA). Use Value: fT = 155 MHz enables stable gain up to 10 MHz; low Cc = 4.5 pF minimizes Miller effect in high-frequency feedback networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCX56-16TX | hFE = 100–250 (higher gain bin); otherwise identical ratings and package. | Better suited for low-base-drive applications like microcontroller-driven switches where IB < 10 mA is preferred. | Select when higher current gain reduces base drive complexity without changing layout or thermal design. |
| ZTX653 | TO-92 package; VCEO = 60 V; IC = 1 A; hFE = 100–300; no AEC-Q101 qualification. | Limited to non-automotive consumer or industrial use due to lower voltage rating and lack of automotive qualification. | Choose only for cost-sensitive, non-automotive prototypes where SOT89 footprint and AEC compliance are not required. |
Compared with BCX56-16TX, BCX56-10TX trades gain consistency for tighter hFE spread-ideal for designs needing predictable base current. Versus ZTX653, it provides automotive qualification, higher VCEO, and superior thermal performance in SMT assembly.
Availability
BCX56-10TX is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply across automotive, industrial, and embedded power management programs.
Supply support for BCX56-10TX 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 BCX56T series targets medium-power switching and amplification in automotive and industrial systems, emphasizing AEC-Q101 compliance, thermal robustness, and SMT manufacturability in compact SOT89 form factor.
FAQ
What is the maximum allowable junction temperature for BCX56-10TX?
The absolute maximum junction temperature is 150 °C per the datasheet Limiting Values table. Operation above this threshold risks permanent degradation of hFE and increased leakage. Thermal design must ensure Tj remains below 150 °C under worst-case ambient and power dissipation conditions, using the appropriate Rth(j-a) value based on PCB copper area.
Is BCX56-10TX suitable for switching inductive loads?
Yes-its 80 V VCEO and 2 A ICM rating provide margin for flyback voltage suppression in relay or solenoid drivers. However, external clamping (e.g., freewheeling diode) is mandatory to prevent VCE overshoot beyond 80 V during turn-off, as the device lacks integrated protection.
How does the hFE binning affect base resistor selection?
With hFE = 63–160 at IC = 150 mA, base current must be sized for the minimum gain (63) to guarantee saturation. For IC = 500 mA, IB ≥ 7.9 mA is required-so a 1 kΩ resistor from a 5 V MCU GPIO yields ~4.3 mA, which is insufficient; a 560 Ω resistor is recommended for reliable hard saturation.
Can BCX56-10TX replace BCX56-16TX in existing designs?
Yes, mechanically and electrically-same package, pinout, voltage/current ratings, and thermal specs. However, the lower hFE range (63–160 vs. 100–250) may require increasing base drive current to maintain saturation, especially at high IC. Verify VCE(sat) under actual operating conditions before substitution.
BCX56-10TX 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):
- 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:
- 155MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BCX56-10TX FAQ
1.How can I place an order for BCX56-10TX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX56-10TX 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 BCX56-10TX reliable?
The price and inventory of BCX56-10TX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX56-10TX is usually 5 days.
3.What payment methods are accepted for BCX56-10TX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX56-10TX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX56-10TX?
BCX56-10TX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX56-10TX 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 BCX56-10TX?
For technical support, including BCX56-10TX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX56-10TX requirements.
6.How does Aetrix verify that BCX56-10TX is sourced from the original manufacturer or authorized distributors?
All BCX56-10TX 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 BCX56-10TX meets industry standards.
7.What is the process for return or replacement of BCX56-10TX?
All BCX56-10TX units undergo pre-shipment inspection (PSI). If there is an issue with BCX56-10TX, 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 BCX56-10TX part is unused and in its original packaging.
Return procedure for BCX56-10TX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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