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Infineon Technologies BCX53-16E6433
- Part No.:
- BCX53-16E6433
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX53-16E6433.pdf
- Description:
- TRANS 80V 1A PG-SOT89-4-2
- Quantity:
- Payment:
- Shipping:
Inventory:393,468
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Product details
Overview
BCX53-16E6433 from Infineon Technologies is a PNP silicon bipolar junction transistor designed for audio-frequency driver and output stages in linear power amplifiers and switching regulators. It delivers 80 V VCEO, 1 A continuous collector current, 0.5 V VCE(sat) at IC = 500 mA/IB = 50 mA, hFE = 100–250 (at IC = 150 mA), and operates up to 150 °C junction temperature - used in automotive body control modules and industrial relay drivers.
For engineers reviewing the BCX53-16E6433 datasheet, BCX53-16E6433 pinout, BCX53-16E6433 application, or BCX53-16E6433 equivalent, key selection criteria include guaranteed hFE binning (16 = 100–250), SOT89 thermal performance (RthJS ≤ 15 K/W), low saturation voltage for efficient switching, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This PNP BJT operates in active, saturation, and cutoff regions with fixed-base biasing or emitter-follower configurations. Its high VCEO (80 V) and VCBO (100 V) support operation in 24 V and 48 V industrial bus systems, while its 2 W total power dissipation at TS ≤ 120 °C enables use on thermally constrained PCBs without forced cooling.
The device exhibits stable DC current gain across IC = 5 mA to 500 mA, with fT = 125 MHz enabling limited RF pre-driver use up to ~10 MHz. Complementary NPN types (BCX54–BCX56) allow matched push-pull stage design with consistent thermal tracking and gain symmetry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - supports 48 V rail applications with 66 % safety margin against transients |
| IC (continuous) | 1 A - drives solenoids, small relays, or Class AB output stages directly |
| VCE(sat) | 0.5 V max at IC = 500 mA / IB = 50 mA - minimizes conduction loss in switching mode |
| hFE | 100–250 at IC = 150 mA - ensures predictable base drive sizing for stable bias networks |
| fT | 125 MHz typ - permits use in low-MHz signal amplification or fast-switching control loops |
| RthJS | ≤ 15 K/W - enables 1.33 W usable power at ΔT = 20 K above solder point, critical for SOT89 footprint |
| AEC-Q101 | Qualified - validated for automotive under-hood temperature cycling, humidity, and mechanical shock |
Pinout & Package
SOT89 package: 3-pin surface-mount plastic case with exposed thermal pad (pin 2 = collector tab), 1.6 mm height, 4.5 mm × 2.5 mm footprint, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current sink node; connects to load return or ground reference in common-emitter switch |
| 2 (Collector) | C | Main current path; electrically and thermally connected to exposed metal tab for heatsinking |
| 3 (Base) | B | Control input; requires current-limited drive (e.g., 50 mA max for 500 mA IC) |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | 80 V enables direct interface with 48 V industrial buses without external clamping |
| Low VCE(sat) | 0.5 V max reduces power loss by >30 % vs. standard PNP transistors at 500 mA |
| Guaranteed hFE binning | "16" suffix denotes 100–250 hFE range - eliminates gain variation in production calibration |
| AEC-Q101 qualification | Validated for automotive ambient temperatures (−40 °C to +150 °C) and vibration profiles |
| SOT89 thermal design | Exposed collector tab allows 1.33 W dissipation with 20 K rise - no heatsink required for <1 W loads |
Applications
| Automotive Body Control Unit | Industrial Relay Driver |
|---|---|
Use Scenario: Driving 24 V/500 mA electromagnetic door locks in vehicle BCMs. IC Role / Device Role / Timing Role: PNP switch controlling lock coil current via microcontroller GPIO with base resistor network. Use Value: 0.5 V VCE(sat) limits coil heating to <250 mW at full current, extending solenoid life and reducing PCB thermal stress. | Use Scenario: Switching 48 V/800 mA industrial control relays in PLC I/O modules. IC Role / Device Role / Timing Role: High-voltage PNP output stage interfacing MCU logic to relay coil with flyback diode protection. Use Value: 80 V VCEO withstands 48 V bus transients per ISO 7637-2 Pulse 1/2a, eliminating need for TVS clamping. |
| Linear Audio Output Stage | DC-DC Converter Pre-regulator |
Use Scenario: Emitter-follower output buffer in 12 V battery-powered audio amplifiers. IC Role / Device Role / Timing Role: Low-output-impedance current source delivering 500 mA peak into 8 Ω speaker load. Use Value: hFE ≥ 100 ensures stable open-loop gain and minimal THD (<0.5 %) at 1 kHz with 100 Ω base drive. | Use Scenario: Pre-regulating 72 V input to 48 V intermediate bus in telecom power supplies. IC Role / Device Role / Timing Role: Linear pass transistor controlled by error amplifier in constant-voltage feedback loop. Use Value: RthJS ≤ 15 K/W allows 1.2 W dissipation at 120 °C board temperature - sufficient for 24 V drop at 50 mA. |
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 |
|---|---|---|---|
| ZTX753 | VCEO = 60 V, hFE = 100–300, SOT89, non-AEC-Q101 | Lacks automotive qualification; lower voltage margin for 48 V systems | Select only for cost-sensitive industrial designs where AEC-Q101 is not mandated |
| MJD2955G | VCEO = 60 V, IC = 10 A, TO-220, hFE = 20–70 | Higher current but un-binned gain and larger footprint; no SOT89 thermal advantage | Use when >1 A load current is required and board space allows TO-220 mounting |
Compared with ZTX753 and MJD2955G, BCX53-16E6433 uniquely combines AEC-Q101 compliance, 80 V rating, tight hFE binning, and SOT89 thermal efficiency - making it optimal for space-constrained automotive and industrial switching where reliability and predictability are critical.
Availability
BCX53-16E6433 is available at Aetrix Electronics and suitable for automotive body control units, industrial relay drivers, linear audio output stages, and DC-DC converter pre-regulators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BCX53-16E6433 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.
The BCX53 series belongs to Infineon's high-reliability bipolar transistor product line, engineered specifically for automotive and industrial switching applications demanding robustness, thermal stability, and AEC-Q101 validation.
FAQ
What is the maximum allowable base current for BCX53-16E6433?
The absolute maximum peak base current (IBM) is 200 mA per datasheet Section 2. This limit applies under pulsed conditions (tp ≤ 10 ms). For continuous DC operation, base current should be limited to 100 mA to ensure long-term reliability and avoid thermal runaway at elevated ambient temperatures.
Is BCX53-16E6433 pin-compatible with BCX53-10?
Yes - both share identical SOT89 package, pin 1 (emitter), pin 2 (collector), pin 3 (base) configuration, and mechanical footprint. The "10" and "16" suffixes denote different hFE bins (63–160 vs. 100–250), not pinout or package variation.
Does BCX53-16E6433 require a heatsink in typical applications?
No heatsink is required for operation below 1.33 W dissipation at board temperature ≤ 120 °C, enabled by the SOT89 exposed collector tab and RthJS ≤ 15 K/W. For sustained 1 W loads, a 25 mm² copper pour under the tab suffices; forced-air cooling is unnecessary.
Can BCX53-16E6433 replace BCX56 in complementary circuits?
No - BCX56 is an NPN transistor (complementary to BCX53), so direct replacement would invert circuit function. However, BCX53-16E6433 and BCX56-16 are matched in hFE binning and package, enabling balanced push-pull designs when used together with proper polarity reversal.
BCX53-16E6433 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- -
- 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:
- 40 @ 50mA, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 125MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT89-4-2
BCX53-16E6433 FAQ
1.How can I place an order for BCX53-16E6433 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX53-16E6433 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 BCX53-16E6433 reliable?
The price and inventory of BCX53-16E6433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX53-16E6433 is usually 5 days.
3.What payment methods are accepted for BCX53-16E6433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX53-16E6433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX53-16E6433?
BCX53-16E6433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX53-16E6433 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 BCX53-16E6433?
For technical support, including BCX53-16E6433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX53-16E6433 requirements.
6.How does Aetrix verify that BCX53-16E6433 is sourced from the original manufacturer or authorized distributors?
All BCX53-16E6433 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 BCX53-16E6433 meets industry standards.
7.What is the process for return or replacement of BCX53-16E6433?
All BCX53-16E6433 units undergo pre-shipment inspection (PSI). If there is an issue with BCX53-16E6433, 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 BCX53-16E6433 part is unused and in its original packaging.
Return procedure for BCX53-16E6433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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