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Diodes Incorporated BCX5516TA
- Part No.:
- BCX5516TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX5516TA.pdf
- Description:
- TRANS NPN 60V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:24,061
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Product details
Overview
BCX5516TA from Diodes Incorporated is an NPN medium-power transistor in SOT89 package, rated for 60V VCEO, 1A continuous collector current, and <500mV VCE(sat) at 500mA/50mA drive-designed for AF driver stages and medium-power switching in industrial control power supplies.
For engineers reviewing the BCX5516TA datasheet, BCX5516TA pinout, BCX5516TA application, or BCX5516TA equivalent, key selection criteria include verified VCEO = 60V, hFE = 100–250 at IC = 150mA, thermal resistance RθJL = 13°C/W, and SOT89 lead-frame thermal performance under 1oz copper PCB conditions.
Technical Context
This device uses epitaxial planar die construction to achieve stable hFE across IC = 5mA–500mA and low VCE(sat) with defined base-emitter turn-on voltage (VBE(on) ≤ 1.0V at IC = 500mA). Its safe operating area supports pulsed IC up to 2A with 100µs–1s pulse widths.
Thermal design relies on the exposed collector pad: RθJL = 13°C/W enables 1.5W dissipation on 15mm×15mm 1oz FR4, while RθJC = 39°C/W confirms direct case-to-heatsink conduction capability-critical for linear regulator pass elements and audio output stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum sustainable collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (continuous) | 1 A - Continuous DC collector current rating at TA = 25°C with derating above 25°C per Figure 2. |
| VCE(sat) | < 0.5 V @ IC = 500mA, IB = 50mA - Ensures low conduction loss in switching applications. |
| hFE | 100–250 @ IC = 150mA, VCE = 2V - Provides predictable current gain for biasing and amplification stability. |
| fT | 150 MHz @ IC = 50mA, VCE = 10V - Supports high-frequency small-signal amplification up to mid-VHF band. |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance enables efficient heat transfer through the exposed collector pad. |
Pinout & Package
Package: SOT89 - Surface-mount plastic package with exposed collector pad for enhanced thermal dissipation; molded "Green" compound (UL 94V-0), matte tin finish leads, 0.055g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | E | Current return path; connected to ground or low-side reference in common-emitter configurations. |
| Pin 2 (Base) | B | Control input; requires ~50mA drive for full saturation at 500mA collector load. |
| Pin 3 (Collector) | C | High-current output node; electrically and thermally tied to exposed metal tab for heatsinking. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | <500mV at IC = 500mA ensures <250mW conduction loss in switching regulators and motor drivers. |
| High hFE consistency | 100–250 over IC = 150mA range enables stable bias networks without emitter degeneration resistors. |
| Exposed collector pad | RθJL = 13°C/W allows direct thermal coupling to PCB copper, eliminating need for external heatsinks below 1.5W. |
| AEC-Q101 readiness | Manufactured in IATF 16949 certified facilities; PPAP-capable for automotive-grade medium-power switching modules. |
Applications
| Audio Power Amplifier Stage | Industrial Relay Driver |
|---|---|
|
Use Scenario: Final output stage in Class-B or Class-AB audio amplifiers delivering 0.5–1W into 8Ω loads. IC Role / Device Role / Timing Role: NPN power switch amplifying line-level signals with minimal crossover distortion. Use Value: VCE(sat) < 500mV reduces idle heating; fT = 150MHz preserves signal fidelity up to 20kHz. |
Use Scenario: Driving 12V/24V electromagnetic relays in PLC I/O modules and HVAC controllers. IC Role / Device Role / Timing Role: Medium-power saturated switch interfacing microcontroller GPIO to relay coil. Use Value: 1A IC rating handles 500mA relay coils with margin; hFE ≥ 100 ensures reliable turn-on with 5mA MCU drive. |
| DC-DC Converter Pass Element | Linear Voltage Regulator Output Transistor |
|
Use Scenario: Pass transistor in non-synchronous buck converter feedback loop for 5V/1A output regulation. IC Role / Device Role / Timing Role: Linear-mode current source controlling output voltage via error amplifier feedback. Use Value: RθJL = 13°C/W sustains 1.2W dissipation at 75°C ambient; VCEO = 60V supports 48V input rails. |
Use Scenario: Series pass element in adjustable LDO designs requiring >1A output and <1V dropout. IC Role / Device Role / Timing Role: High-current series regulator transistor dissipating excess input-output differential. Use Value: Low VCE(sat) minimizes dropout voltage; thermal resistance enables operation without heatsink on 25mm² copper. |
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 |
|---|---|---|---|
| BCX55TA | VCEO = 60V, same hFE range, but marked "BE" and supplied in 1000-unit 7″ reel (vs. BM marking and identical reel size). | No functional difference; differs only in date-code/marking and tape-and-reel logistics-not electrical or thermal. | Select BCX5516TA when traceability to specific production lot or dual-sourcing from same SOT89 assembly line is required. |
| MJD122G | Higher VCEO = 100V, IC = 3A, but TO-252 package (RθJA ≈ 60°C/W vs. SOT89's 125°C/W on 15mm² copper). | Supports higher voltage/current but requires larger board area and different thermal layout; not drop-in compatible. | Choose MJD122G only when >60V rail or >1A continuous load demands exceed BCX5516TA's ratings. |
Compared with BCX55TA, BCX5516TA offers identical electrical performance with distinct marking and reel packaging-ideal for BOM version control; versus MJD122G, it trades higher voltage headroom for compact SOT89 footprint and superior thermal efficiency on limited PCB area.
Availability
BCX5516TA is available at Aetrix Electronics and suitable for industrial relay drivers, audio amplifier output stages, DC-DC converter pass elements, and linear voltage regulator designs requiring stable component supply with consistent SOT89 thermal performance.
Supply support for BCX5516TA 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 devices for industrial and automotive markets.
BCX5516TA belongs to the BCX54/55/56 family of medium-power NPN transistors designed specifically for cost-sensitive, thermally constrained applications requiring robust 60V switching and amplification in SOT89 form factor.
FAQ
What is the maximum continuous collector current for BCX5516TA at 75°C ambient?
At TA = 75°C, the maximum continuous collector current is derated to approximately 0.75A based on the 1.5W power limit (from RθJA = 125°C/W on 15mm×15mm 1oz copper) and VCE(sat) < 500mV. This ensures junction temperature remains below 150°C under steady-state operation.
Is BCX5516TA qualified for automotive applications?
BCX5516TA is manufactured in IATF 16949 certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101, Diodes Incorporated offers AEC-Q101 qualification upon request for automotive programs-contact their automotive team for change-controlled release and test reports.
How does the SOT89 package affect thermal performance compared to TO-92?
The SOT89 package delivers RθJL = 13°C/W via its exposed collector pad, enabling 1.5W dissipation on modest PCB copper-over 3× better than TO-92's typical RθJA > 200°C/W. This eliminates need for heatsinks in most medium-power applications where TO-92 would thermally saturate.
Can BCX5516TA replace BCX5416TA in existing designs?
No-BCX5416TA has VCEO = 45V and lower BVCBO = 45V, while BCX5516TA is rated for 60V VCEO. Substitution is only safe if the circuit's maximum VCE never exceeds 45V; otherwise, BCX5516TA provides necessary voltage margin but may exhibit slightly higher VCE(sat) at low IC.
BCX5516TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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):
- 60 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
BCX5516TA FAQ
1.How can I place an order for BCX5516TA through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX5516TA 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 BCX5516TA reliable?
The price and inventory of BCX5516TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5516TA is usually 5 days.
3.What payment methods are accepted for BCX5516TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5516TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX5516TA?
BCX5516TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX5516TA 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 BCX5516TA?
For technical support, including BCX5516TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5516TA requirements.
6.How does Aetrix verify that BCX5516TA is sourced from the original manufacturer or authorized distributors?
All BCX5516TA 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 BCX5516TA meets industry standards.
7.What is the process for return or replacement of BCX5516TA?
All BCX5516TA units undergo pre-shipment inspection (PSI). If there is an issue with BCX5516TA, 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 BCX5516TA part is unused and in its original packaging.
Return procedure for BCX5516TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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