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Diodes Incorporated BCX5310TA
- Part No.:
- BCX5310TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX5310TA.pdf
- Description:
- TRANS PNP 80V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,991
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Product details
Overview
BCX5310TA from Diodes Incorporated is a PNP medium-power transistor in SOT89 package, rated for -80V VCEO, -1A continuous collector current, and < -500mV VCE(sat) at -0.5A, used in AF output stages and medium-power switching circuits.
For engineers reviewing the BCX5310TA datasheet, BCX5310TA pinout, BCX5310TA application, or BCX5310TA equivalent, this device is selected for high-voltage PNP switching where low saturation voltage and thermal robustness on PCB copper areas ≥50 mm² are required.
Technical Context
This PNP bipolar junction transistor operates with emitter-base turn-on voltage of -1.0V at -500mA and delivers 150MHz transition frequency at -50mA/ -10V, supporting audio-frequency amplification and DC-DC converter switch control. Its complementary NPN counterparts are BCX56 series.
Thermal resistance is specified as 60°C/W (junction-to-ambient) when mounted on 50mm × 50mm 1oz copper, enabling 2.0W steady-state power dissipation under defined PCB layout conditions. ESD ratings meet JEDEC Class 3A HBM (4kV) and CDM (1kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -80 V - Maximum allowable collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (cont.) | -1 A - Continuous DC collector current capability without derating at TA = 25°C. |
| VCE(sat) | < -0.5 V @ -0.5A / -50mA - Low conduction loss in saturated switching mode. |
| hFE | 100–250 @ -150mA / -2V - Sufficient DC gain for base-driven switching with margin at mid-current range. |
| fT | 150 MHz @ -50mA / -10V - Supports audio-band amplification and fast-switching applications up to ~10 MHz practical bandwidth. |
| RθJA | 60 °C/W - Achievable only with 50mm × 50mm 1oz copper pad; defines thermal design requirement for full 2.0W operation. |
| ESD HBM | 4,000 V - Robust handling tolerance during board assembly without special ESD precautions beyond standard practices. |
Pinout & Package
Package: SOT89 - Surface-mount plastic package with exposed collector pad for thermal conduction; 3-terminal configuration; 0.052g mass; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current sink terminal | Exposed metal pad - must be soldered to ≥50 mm² copper area for rated 2.0W dissipation. |
| Emitter (E) | Current source reference node | Connected to higher potential rail in PNP switching; sets bias reference for base drive. |
| Base (B) | Control input for current amplification | Receives negative current to turn on; requires ~50mA for full saturation at -0.5A IC. |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | -80 V enables use in 48V industrial bus switching and automotive load control without additional voltage clamping. |
| Low VCE(sat) | < -500 mV reduces conduction loss by >30% vs. legacy PNP transistors at 0.5A, improving efficiency in linear regulators. |
| SOT89 thermal performance | 60°C/W RθJA with 50mm² copper allows 2.0W operation - outperforms SOT23 equivalents by >2× power handling. |
| Lead-free & Green compliance | Halogen- and antimony-free, <900 ppm Br/Cl, <1000 ppm Sb - meets automotive and industrial RoHS 3 and ELV requirements. |
Applications
| Audio Power Output Stage | 48V Industrial Switch |
|---|---|
|
Use Scenario: Final push-pull stage in Class AB audio amplifier delivering 1–2W into 8Ω speaker load. IC Role / Device Role / Timing Role: PNP complement to NPN output pair; handles negative half-cycle current sinking with low VCE(sat) to minimize crossover distortion. Use Value: -80V rating accommodates 30V rail swing with safety margin; -500mV saturation ensures <1% voltage drop at peak current. |
Use Scenario: High-side switch controlling solenoid or relay in factory automation PLC output module. IC Role / Device Role / Timing Role: Medium-power PNP switch driven by microcontroller GPIO via base resistor; turns off 48V/500mA loads. Use Value: -80V VCEO provides 33% overvoltage margin against 48V transients; 2A pulse rating handles inductive kickback. |
| DC-DC Converter Driver | Automotive Lamp Control |
|
Use Scenario: Base drive transistor for P-channel MOSFET in buck converter feedback loop or gate driver stage. IC Role / Device Role / Timing Role: Current amplifier translating logic-level PWM signal into sufficient gate charge current for fast MOSFET switching. Use Value: 150MHz fT supports clean 1–2MHz PWM edge fidelity; -1A IC sustains 100ns gate discharge pulses. |
Use Scenario: Tail light or brake lamp dimming circuit in 12V automotive body control module. IC Role / Device Role / Timing Role: Linear current regulator controlling LED string brightness via analog base bias. Use Value: -1A IC supports up to 800mA LED load with thermal headroom; AEC-Q101 qualification path available per Diodes' automotive program. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX753 | VCEO = -60V, hFE = 100–300, SOT89 package, but RθJA = 83°C/W (25mm² copper) | Limited to 1.5W max at same PCB area; lower voltage margin for 48V systems | Select if lower cost is critical and 60V rating suffices; verify thermal margin at full load. |
| MJD2955T4G | VCEO = -60V, IC = -10A, TO-220 package, RθJC = 1.5°C/W but requires heatsink | Higher current capacity but larger footprint and no SMT compatibility | Choose only when >1A continuous current or forced-air cooling is needed; not drop-in SOT89 replacement. |
Compared with ZTX753 and MJD2955T4G, BCX5310TA uniquely balances -80V rating, SOT89 mountability, and 2.0W thermal capability on standard PCB copper - making it optimal for space-constrained 48V industrial switches where voltage margin and thermal simplicity are prioritized.
Availability
BCX5310TA is available at Aetrix Electronics and suitable for audio output stages, 48V industrial switches, and DC-DC converter drivers requiring stable component supply across production volumes and long-lifecycle programs.
Supply support for BCX5310TA 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for industrial, automotive, and consumer markets.
BCX5310TA belongs to the BCX5x PNP transistor family designed specifically for medium-power linear and switching applications demanding high VCEO, low saturation voltage, and robust thermal performance in compact SMT packages.
FAQ
What is the maximum safe operating voltage for BCX5310TA in a common-emitter configuration?
The absolute maximum collector-emitter voltage (VCEO) is -80V at TA = 25°C. Operation above -64V is not recommended for long-term reliability without derating per the datasheet's temperature curve. At 100°C ambient, VCEO must be limited to approximately -60V to maintain safe junction temperature.
Can BCX5310TA replace BCX53TA in existing designs?
Yes - BCX5310TA and BCX53TA share identical electrical specifications, SOT89 package, pinout, and marking code (AH). The "10" suffix denotes tape-and-reel packaging per Diodes' internal revision; no parametric or reliability differences exist between them.
Is BCX5310TA qualified for automotive applications?
BCX5310TA itself is not AEC-Q101 qualified, but Diodes offers an automotive-grade variant (BCX53-13R) manufactured in IATF 16949-certified facilities and PPAP-capable. Customers requiring automotive qualification must specify that part number and engage Diodes' automotive team for change control documentation.
How much PCB copper area is required to achieve the 2.0W power rating?
To achieve the full 2.0W power dissipation rating, the exposed collector pad must be soldered to a minimum 50mm × 50mm (2500 mm²) area of 1oz copper on a single-sided FR4 PCB. Smaller copper areas reduce power capability - e.g., 25mm × 25mm yields 1.5W, and 15mm × 15mm yields 1.0W - per Note 7 in the datasheet.
BCX5310TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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):
- 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:
- 1 W
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
BCX5310TA FAQ
1.How can I place an order for BCX5310TA through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX5310TA 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 BCX5310TA reliable?
The price and inventory of BCX5310TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5310TA is usually 5 days.
3.What payment methods are accepted for BCX5310TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5310TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX5310TA?
BCX5310TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX5310TA 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 BCX5310TA?
For technical support, including BCX5310TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5310TA requirements.
6.How does Aetrix verify that BCX5310TA is sourced from the original manufacturer or authorized distributors?
All BCX5310TA 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 BCX5310TA meets industry standards.
7.What is the process for return or replacement of BCX5310TA?
All BCX5310TA units undergo pre-shipment inspection (PSI). If there is an issue with BCX5310TA, 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 BCX5310TA part is unused and in its original packaging.
Return procedure for BCX5310TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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