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Diodes Incorporated BCX52TA
- Part No.:
- BCX52TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX52TA.pdf
- Description:
- TRANS PNP 60V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:662
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Product details
Overview
BCX52TA from Diodes Incorporated is a PNP medium-power bipolar junction transistor in SOT89 package, rated for -60V collector-emitter breakdown voltage (VCEO), -1A continuous collector current, and VCE(sat) < -500mV at -500mA/–50mA drive-used in AF output stages and medium-power switching circuits.
For engineers reviewing the BCX52TA datasheet, BCX52TA pinout, BCX52TA application, or BCX52TA equivalent, key selection criteria include verified VCEO = –60V, thermal resistance RθJL = 13°C/W, hFE ≥ 40 at –150mA, complementary NPN pairing with BCX55, and SOT89 thermal pad layout compatibility.
Technical Context
This PNP transistor operates in linear amplification and saturated switching modes, with guaranteed hFE of 40–250 across –5mA to –500mA collector currents and VCE = –2V. Its low VCE(sat) enables efficient power control in DC-DC pre-regulators and relay drivers.
Thermal performance is defined by RθJL = 13°C/W (junction-to-lead) and RθJC = 27°C/W (junction-to-case), requiring direct thermal coupling of the exposed collector pad to PCB copper for sustained 1W dissipation. ESD ratings meet JEDEC HBM Class 3A (4kV) and CDM Class C3 (1kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | –60 V: Maximum safe collector-emitter voltage before avalanche conduction in open-base configuration. |
| IC (cont.) | –1 A: Continuous DC collector current rating under 25°C ambient with adequate heatsinking on 50mm×50mm 1oz copper. |
| VCE(sat) | < –500 mV @ –500mA/–50mA: Ensures ≤0.25W conduction loss in saturated switch applications. |
| hFE | 40–250: Confirmed DC current gain range at –150mA/–2V, supporting stable bias design across temperature (–55°C to +150°C). |
| fT | 150 MHz: Gain-bandwidth product enabling audio-frequency amplification up to ~100kHz with usable gain margin. |
| RθJL | 13 °C/W: Junction-to-lead thermal resistance measured at solder point on exposed collector pad-critical for thermal layout validation. |
Pinout & Package
Package: SOT89 - surface-mount plastic package with exposed collector pad for thermal conduction; dimensions per Diodes outline SOT89 (D2 = 1.71 mm, E = 2.50 mm, H = 4.10 mm); UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current sink terminal | Connected to exposed metal pad-must be soldered to ≥15mm² copper area for rated 1W dissipation. |
| Emitter (E) | Current source reference node | Internally tied to substrate ground plane; requires low-inductance connection in high-speed switching. |
| Base (B) | Control input for current amplification | Driven with –50mA to achieve full saturation; base resistor must limit IB to ≤–100mA continuous. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary NPN pairing | BCX55TA provides matched VCEO, IC, and hFE for push-pull amplifier stages. |
| Automotive-grade readiness | Manufactured in IATF 16949 certified facilities; PPAP-capable with AEC-Q101 qualification path available. |
| Green material compliance | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); RoHS 3 compliant with no added lead. |
| ESD robustness | 4kV HBM and 1kV CDM ratings reduce risk of handling damage during SMT assembly and board test. |
Applications
| Audio Frequency Output Stage | DC-DC Pre-regulator Switch |
|---|---|
|
Use Scenario: Driving 8Ω speaker loads in battery-powered portable audio amplifiers with single-supply rails. IC Role / Device Role / Timing Role: PNP emitter-follower output stage delivering ±500mA peak current with minimal crossover distortion. Use Value: VCE(sat) < –500mV ensures ≥85% efficiency at 500mA, reducing heat sink requirements in compact enclosures. |
Use Scenario: High-side switch controlling 12V/500mA solenoid loads in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Saturated PNP switch turning on/off inductive loads with flyback diode protection. Use Value: –60V VCEO withstands 3× supply transients; RθJL = 13°C/W enables 100% duty-cycle operation with 25mm² copper. |
| Relay Driver Circuit | Linear Voltage Regulator Pass Element |
|
Use Scenario: Controlling 24V/1A electromagnetic relays in building automation panels. IC Role / Device Role / Timing Role: Medium-power PNP switch interfacing microcontroller GPIO to relay coil via base resistor network. Use Value: hFE ≥ 40 at –150mA allows 3.3V MCU to drive relay with ≤10kΩ base resistor, eliminating level-shifter ICs. |
Use Scenario: Pass transistor in adjustable 3-terminal linear regulator supplying 5V/1A to FPGA core logic. IC Role / Device Role / Timing Role: Series pass element dissipating up to 1.5W while maintaining ±2% output regulation. Use Value: 1.5W power rating (25mm×25mm copper) and –60V rating support 24V input-to-5V output conversion with safety margin. |
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 |
|---|---|---|---|
| BCX52-13R | Same die, identical electrical specs; differs only in tape-and-reel packaging (4000 pcs vs. 1000 pcs). | No functional difference-suitable for high-volume automated assembly where reel size impacts feeder setup. | Select BCX52-13R for production runs >50k units to reduce changeover frequency and optimize line uptime. |
| MJD2955G | Higher VCEO (–70V), higher IC (–10A), TO-252 package; RθJA = 60°C/W (vs. 83°C/W for BCX52TA on 25mm² copper). | Requires larger PCB footprint and different thermal pad layout; suited for higher-current, lower-frequency switching. | Choose MJD2955G only when >1A continuous load or >60V system transients are present-BCX52TA remains optimal for space-constrained 1A designs. |
Compared with BCX52-13R, BCX52TA offers identical performance in smaller reels for prototyping and low-volume builds; versus MJD2955G, it trades current headroom for SOT89 footprint efficiency and lower assembly cost in sub-1A applications.
Availability
BCX52TA is available at Aetrix Electronics and suitable for audio output stages, relay drivers, DC-DC pre-regulators, and linear regulator pass elements requiring stable component supply, consistent parametric binning, and traceable green-material compliance.
Supply support for BCX52TA 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.
The BCX51/52/53 series targets cost-sensitive medium-power linear and switching applications where thermal efficiency, RoHS compliance, and complementary NPN pairing are critical-especially in consumer audio and industrial controls.
FAQ
What is the maximum allowable continuous power dissipation for BCX52TA on a standard FR4 PCB?
BCX52TA delivers 1.0W continuous power dissipation when mounted on 15mm×15mm 1oz copper (RθJA = 125°C/W), 1.5W on 25mm×25mm copper (RθJA = 83°C/W), and 2.0W on 50mm×50mm copper (RθJA = 60°C/W), all measured at TA = +25°C in still air. Exposed collector pad soldering is mandatory.
Does BCX52TA support automotive qualification out of the box?
BCX52TA is manufactured in IATF 16949-certified facilities and supports PPAP documentation; however, formal AEC-Q101 qualification requires specific lot traceability and test reporting-contact Diodes or Aetrix for qualified automotive-grade variants (e.g., BCX52TAQ) with full stress-test data.
How does the SOT89 pinout differ from TO-92 for replacement purposes?
SOT89 uses Collector–Emitter–Base (C–E–B) pin order (top view), whereas TO-92 typically uses E–B–C; direct replacement requires PCB layout revision. The SOT89's exposed collector pad also mandates thermal pad routing absent in TO-92 footprints-no mechanical drop-in compatibility exists.
Can BCX52TA be used in parallel for higher current capability?
Parallel operation is not recommended due to hFE variation (40–250) and thermal runaway risk without individual emitter resistors. For >1A applications, select a single higher-rated device like MJD2955G or implement active current-sharing circuitry.
BCX52TA 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):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 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
BCX52TA FAQ
1.How can I place an order for BCX52TA through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX52TA 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 BCX52TA reliable?
The price and inventory of BCX52TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX52TA is usually 5 days.
3.What payment methods are accepted for BCX52TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX52TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX52TA?
BCX52TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX52TA 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 BCX52TA?
For technical support, including BCX52TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX52TA requirements.
6.How does Aetrix verify that BCX52TA is sourced from the original manufacturer or authorized distributors?
All BCX52TA 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 BCX52TA meets industry standards.
7.What is the process for return or replacement of BCX52TA?
All BCX52TA units undergo pre-shipment inspection (PSI). If there is an issue with BCX52TA, 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 BCX52TA part is unused and in its original packaging.
Return procedure for BCX52TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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