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Diodes Incorporated BCX5116TA
- Part No.:
- BCX5116TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX5116TA.pdf
- Description:
- TRANS PNP 45V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,281
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Product details
Overview
BCX5116TA from Diodes Incorporated is a PNP medium-power transistor in SOT89 package, rated for -60V VCEO, -1A continuous collector current, and < -500mV VCE(sat) at -0.5A, used in AF output stages and medium-power switching circuits in industrial power supplies and motor drivers.
For engineers reviewing the BCX5116TA datasheet, BCX5116TA pinout, BCX5116TA application, or BCX5116TA equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT89 terminal mapping, and direct-fit alternatives for discrete PNP switching design validation.
Technical Context
This device operates as a single PNP bipolar junction transistor with fixed gain structure optimized for linear amplification and saturated switching. Its -60V VCEO rating and -1A IC support medium-voltage DC-DC converter control and audio driver loads where base-driven saturation is required.
Thermal performance is defined by RθJA = 83°C/W (on 25mm × 25mm 1oz copper) and RθJL = 13°C/W, enabling stable operation up to +150°C junction temperature when mounted on thermally enhanced PCBs with exposed collector pad soldering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -60 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (continuous) | -1 A - Continuous DC collector current capability without thermal runaway under specified PCB copper area. |
| VCE(sat) | < -500 mV @ -0.5A, -50mA - Low saturation voltage ensures minimal conduction loss in switching applications. |
| hFE | 40–250 - DC current gain range supports reliable base drive sizing across operating temperatures and current levels. |
| fT | 150 MHz - Transition frequency enables use in audio-frequency amplification and fast-switching control loops. |
| RθJL | 13 °C/W - Low junction-to-lead thermal resistance confirms efficient heat transfer via the exposed collector pad. |
Pinout & Package
Package: SOT89 - Surface-mount plastic package with exposed collector pad for thermal dissipation; 3-terminal configuration; UL 94V-0 rated molding compound; 0.052 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current sink node | Connected to exposed metal pad; primary thermal path to PCB; must be soldered to ≥25 mm² 1oz copper for rated 1.5W dissipation. |
| Emitter (E) | Current source reference | Provides return path for collector current; tied to system ground or negative rail in PNP switch configurations. |
| Base (B) | Control input | Receives current-limited drive signal; requires ~50 mA base current to saturate at -0.5A collector load. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | < -500 mV at -0.5A ensures ≤250 mW conduction loss per transistor in saturated switching mode. |
| High VCEO | -60 V rating allows direct use in 48V industrial bus systems without additional voltage clamping. |
| Robust thermal design | RθJL = 13°C/W enables >1.5W power handling with standard PCB layout-no heatsink required. |
| AEC-Q101 readiness | Manufactured in IATF 16949 certified facilities; PPAP-capable for automotive-grade qualification upon request. |
Applications
| Audio Power Amplifier Output Stage | Industrial DC-DC Converter Switch |
|---|---|
Use Scenario: Driving 8Ω speaker loads in Class-B or AB amplifier outputs requiring low-distortion current sourcing. IC Role / Device Role / Timing Role: PNP complement in push-pull output pair; handles negative half-cycle current delivery. Use Value: -60V VCEO and 150 MHz fT support full-range audio bandwidth with minimal phase shift and crossover distortion. |
Use Scenario: High-side switch in non-isolated buck or flyback controller feedback paths or auxiliary bias rails. IC Role / Device Role / Timing Role: Medium-power PNP switch controlling gate drive or optocoupler LED current in isolated power supply feedback loops. Use Value: -500 mV VCE(sat) minimizes voltage drop across bias circuitry, improving regulation accuracy and efficiency. |
| Motor Driver H-Bridge Leg | Power Supply Sequencing Control |
Use Scenario: Low-side or high-side switching element in 24V brushed DC motor control modules. IC Role / Device Role / Timing Role: Discrete PNP switch enabling bidirectional current flow in half-bridge configurations with external gate drivers. Use Value: -2A ICM peak rating accommodates motor startup surges; RθJL = 13°C/W sustains repetitive pulse operation without thermal throttling. |
Use Scenario: Enabling/disabling voltage rails during power-up/down sequencing in multi-rail embedded systems. IC Role / Device Role / Timing Role: Discrete PNP transistor acting as active OR-ing or enable switch for LDO inputs or PMIC control signals. Use Value: Tight hFE tolerance (40–250) and -5V VEBO ensure predictable turn-on timing and immunity to backfeed from adjacent rails. |
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 |
|---|---|---|---|
| BCX52TA | Same SOT89 package, identical -60V VCEO and -1A IC, but marked "AE" instead of "AD"; identical electrical specs per DS35368 Rev. 11–2. | No functional difference; differs only in reel marking code and packing quantity (1000 vs. 4000 units/reel). | Select BCX52TA for standard tape-and-reel volume orders; BCX5116TA preferred when AD-marked devices are specified in BOMs or legacy designs. |
| ZTX753 | SOT89 PNP with -60V VCEO, -1A IC, but higher VCE(sat) (-0.7V @ -0.5A) and lower fT (100 MHz); RoHS-compliant but not halogen-free. | Acceptable in non-audio switching roles where saturation loss margin exists; unsuitable for high-fidelity amplification due to reduced bandwidth. | Choose ZTX753 only if BCX5116TA is unavailable and thermal budget permits +0.2V higher VCE(sat); verify ESD robustness (HBM 2kV vs. 4kV) in noisy environments. |
Compared with BCX5116TA, BCX52TA offers identical performance in a functionally interchangeable package, while ZTX753 trades off saturation voltage and RF performance for broader distributor availability-making BCX5116TA optimal for thermally constrained or audio-critical designs.
Availability
BCX5116TA is available at Aetrix Electronics and suitable for industrial motor drives, audio amplifier output stages, and DC-DC converter bias control requiring stable component supply, consistent SOT89 mechanical fit, and guaranteed RoHS/halogen-free compliance.
Supply support for BCX5116TA 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 power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.
The BCX51/52/53 series targets medium-power linear and switching applications where robust thermal performance, tight gain distribution, and AEC-Q101 readiness are required-designed specifically for audio, power conversion, and motor control subsystems.
FAQ
What is the maximum allowable junction temperature for BCX5116TA?
The absolute maximum junction temperature is +150°C, as specified in the Absolute Maximum Ratings table. Operation above this limit risks permanent degradation of hFE and increased leakage. Derating curves confirm 1.5W power dissipation is sustainable only up to +85°C ambient when mounted on 25mm × 25mm 1oz copper.
Is BCX5116TA pin-compatible with BCX51TA or BCX52TA?
Yes-BCX5116TA uses the same SOT89 package with identical pinout (C-E-B top view), mechanical dimensions, and thermal pad layout as BCX51TA and BCX52TA. The "16" suffix denotes tape-and-reel packaging variant (AD marking), not electrical or physical differentiation.
Does BCX5116TA meet AEC-Q101 requirements for automotive use?
BCX5116TA is manufactured in IATF 16949 certified facilities and supports PPAP documentation; however, it is not pre-qualified to AEC-Q101. Customers requiring automotive qualification must initiate a formal qualification program with Diodes Incorporated using this part number as the baseline device.
How does the exposed collector pad affect PCB layout requirements?
The exposed collector pad must be soldered to a minimum 25mm² area of 1oz copper to achieve the 1.5W power rating and 83°C/W RθJA. Thermal vias beneath the pad are recommended for multilayer boards; insufficient copper area increases junction temperature and reduces safe operating current by up to 40%.
BCX5116TA 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):
- 45 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:
- 1 W
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
BCX5116TA FAQ
1.How can I place an order for BCX5116TA through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX5116TA 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 BCX5116TA reliable?
The price and inventory of BCX5116TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5116TA is usually 5 days.
3.What payment methods are accepted for BCX5116TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5116TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX5116TA?
BCX5116TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX5116TA 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 BCX5116TA?
For technical support, including BCX5116TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5116TA requirements.
6.How does Aetrix verify that BCX5116TA is sourced from the original manufacturer or authorized distributors?
All BCX5116TA 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 BCX5116TA meets industry standards.
7.What is the process for return or replacement of BCX5116TA?
All BCX5116TA units undergo pre-shipment inspection (PSI). If there is an issue with BCX5116TA, 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 BCX5116TA part is unused and in its original packaging.
Return procedure for BCX5116TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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