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Nexperia USA Inc. BCX56-16-QX
- Part No.:
- BCX56-16-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX56-16-QX.pdf
- Description:
- TRANS NPN 80V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:4,007
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Product details
Overview
BCX56-16-QX from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT89 (SC-62) package, rated for 80 V VCEO, 1 A continuous IC, and 250 hFE at IC = 150 mA / VCE = 2 V. It serves as a low-side switch or MOSFET driver in automotive power management circuits with thermal resistance as low as 93 K/W under optimized PCB layout.
For engineers reviewing the BCX56-16-QX datasheet, BCX56-16-QX pinout, BCX56-16-QX application, or BCX56-16-QX equivalent, key selection criteria include its 80 V breakdown voltage, 1 A DC current capability, AEC-Q101 qualification, SOT89 thermal performance, and hFE range of 100–250 - critical for linear regulator and battery-driven device designs requiring stable gain and automotive-grade reliability.
Technical Context
This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with verified VCEO = 80 V and VCBO = 100 V, enabling use in 24 V and 48 V automotive subsystems. Its pulsed ICM = 2 A and fT = 100–180 MHz support fast switching in MOSFET gate drive and amplifier stages.
Thermal design is defined by three mounting conditions: standard footprint (Rth(j-a) = 250 K/W), 1 cm² collector pad (132 K/W), and 6 cm² pad (93 K/W). The device's 150 °C max junction temperature and -55 °C to +150 °C operating ambient range align with under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - supports 24 V/48 V automotive bus systems with margin against transients |
| IC (continuous) | 1 A - enables direct driving of small relays, LEDs, or logic-level MOSFET gates |
| hFE | 100–250 at VCE = 2 V, IC = 150 mA - ensures predictable base drive requirements in linear and switching modes |
| Ptot (6 cm² pad) | 1.35 W - delivers usable power handling in compact SOT89 footprint with proper copper area |
| fT | 100–180 MHz - sufficient for high-speed switching in PWM controllers and signal amplification |
| Rth(j-a) | 93 K/W (6 cm² pad) - defines thermal budget for sustained 1 A operation without forced cooling |
| VCE(sat) | ≤ 0.5 V at IC = 500 mA, IB = 50 mA - minimizes conduction loss in low-side switching 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, with exposed collector tab for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current return path; connected to ground or low-impedance reference in low-side configurations |
| 2 | Collector | Main power output node; electrically and thermally tied to PCB copper pour for heat dissipation |
| 3 | Base | Control input; requires current-limited drive (max IB = 0.3 A) to avoid saturation delay or damage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use per stress test standard for discrete semiconductors |
| Three hFE bins | BCX56-16-QX offers 100–250 gain spread - enables precise current mirror or biasing without external trimming |
| High Ptot in SOT89 | 1.35 W with 6 cm² copper - exceeds typical SOT89 limits, reducing need for larger packages |
| Low VCE(sat) | ≤ 0.5 V at IC/IB = 10 - lowers power loss and self-heating during continuous conduction |
| Robust transient rating | ICM = 2 A (1 ms pulse) - handles inrush currents in motor drivers and solenoid controls |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
Use Scenario: Pass transistor in adjustable LDOs for infotainment power rails. IC Role / Device Role / Timing Role: NPN series pass element controlling output voltage via base bias network. Use Value: Stable hFE bin ensures consistent dropout voltage across production units; 80 V rating accommodates load dump transients. |
Use Scenario: Gate driver for N-channel power MOSFETs in BLDC motor control modules. IC Role / Device Role / Timing Role: Low-side level-shifting switch turning on high-current MOSFET gates. Use Value: 2 A peak current capability safely charges gate capacitance; low VCE(sat) reduces driver losses. |
| Low-Side Switches | Battery-Driven Devices |
Use Scenario: Load switch for HVAC actuators in 12 V/24 V vehicle platforms. IC Role / Device Role / Timing Role: High-current NPN switch connecting load to ground under MCU GPIO control. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle life; 1 A DC rating covers typical actuator loads. |
Use Scenario: Power enable switch in portable diagnostic tools powered by Li-ion packs. IC Role / Device Role / Timing Role: Battery isolation transistor activated only during active measurement cycles. Use Value: Low standby leakage (ICBO ≤ 100 nA) preserves battery charge; SOT89 footprint saves board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCX56-16,115 | Same die, non-AEC-Q101 version; identical electrical specs but no automotive qualification | Not suitable for safety-critical or OEM automotive programs requiring AEC compliance | Select when cost sensitivity outweighs automotive qualification requirement |
| ZTX653STZ | Higher VCEO = 100 V, lower hFE = 70–200, TO-92 package (larger footprint, higher Rth(j-a)) | Limited to non-automotive industrial use due to package thermal limits and lack of AEC-Q101 | Choose only if higher voltage margin is prioritized over thermal performance and automotive compliance |
Compared with BCX56-16-QX, BCX56-16,115 omits automotive qualification while preserving all electrical parameters, whereas ZTX653STZ trades AEC-Q101 compliance and SOT89 thermal efficiency for higher voltage rating and through-hole assembly compatibility.
Availability
BCX56-16-QX is available at Aetrix Electronics and suitable for automotive power management, MOSFET gate driving, and linear regulator designs requiring stable component supply with AEC-Q101 assurance.
Supply support for BCX56-16-QX 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 leading global semiconductor expert focused on essential system functionality, delivering high-performance, reliable discrete, logic, and MOSFET components.
BCX56-16-QX belongs to the BCX56-Q automotive-qualified NPN transistor family, engineered for robustness in vehicle power control, battery management, and interface circuitry where reliability under thermal and electrical stress is mandatory.
FAQ
What is the maximum allowable base current for continuous operation?
The absolute maximum DC base current is 0.3 A per datasheet limiting values. For reliable long-term operation, design base drive to maintain IB ≤ 100 mA with appropriate current-limiting resistor, ensuring IC/IB ≤ 10 for saturation and avoiding thermal runaway at elevated ambient temperatures.
Can BCX56-16-QX be used in linear amplifier configurations?
Yes - its hFE stability (100–250 at IC = 150 mA), low VCE(sat), and 150 °C Tj rating support Class-A and AB audio or sensor signal amplification. Thermal derating must be applied per Figure 1, especially with >0.5 W dissipation on standard FR4 layouts.
Is the SOT89 package lead-free and RoHS compliant?
Yes - BCX56-16-QX is manufactured using lead-free solderable terminations and complies with EU RoHS Directive 2011/65/EU and REACH regulation, as confirmed in Nexperia's official product compliance documentation and material declarations.
How does the 6 cm² copper pad affect thermal performance?
Mounting the collector tab on a 6 cm² tin-plated copper area reduces Rth(j-a) from 250 K/W (standard footprint) to 93 K/W, enabling 1.35 W total power dissipation at Tamb = 25 °C. This allows full 1 A current capability without heatsink in properly laid-out automotive PCBs.
BCX56-16-QX 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:
- 100 @ 150mA, 2V
- Power - Max:
- 500 mW
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BCX56-16-QX FAQ
1.How can I place an order for BCX56-16-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX56-16-QX 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 BCX56-16-QX reliable?
The price and inventory of BCX56-16-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX56-16-QX is usually 5 days.
3.What payment methods are accepted for BCX56-16-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX56-16-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX56-16-QX?
BCX56-16-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX56-16-QX 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 BCX56-16-QX?
For technical support, including BCX56-16-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX56-16-QX requirements.
6.How does Aetrix verify that BCX56-16-QX is sourced from the original manufacturer or authorized distributors?
All BCX56-16-QX 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 BCX56-16-QX meets industry standards.
7.What is the process for return or replacement of BCX56-16-QX?
All BCX56-16-QX units undergo pre-shipment inspection (PSI). If there is an issue with BCX56-16-QX, 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 BCX56-16-QX part is unused and in its original packaging.
Return procedure for BCX56-16-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCX56-16-QX Tags
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