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Diodes Incorporated BCX5416TA
- Part No.:
- BCX5416TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX5416TA.pdf
- Description:
- TRANS NPN 45V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,564
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Product details
Overview
BCX5416TA 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 0.5A. It features epitaxial planar die construction, 150MHz fT, and is optimized for AF driver and output-stage amplification in automotive-qualified designs.
For engineers reviewing the BCX5416TA datasheet, BCX5416TA pinout, BCX5416TA application, or BCX5416TA equivalent, key selection criteria include its 60V breakdown rating, thermal resistance of 125°C/W (on 15mm×15mm copper), RoHS-compliant green molding compound, and SOT89 lead-frame thermal performance for medium-power switching.
Technical Context
This NPN bipolar junction transistor operates with a minimum hFE of 25 at 5mA/2V and maintains ≥100 at 150mA/2V, supporting stable current gain across medium-current drive ranges. Its 150MHz transition frequency and low 25pF Cobo at 10V enable reliable audio-frequency amplification and switching up to several megahertz.
The device uses a thermally enhanced SOT89 package with exposed collector pad, delivering RθJL = 13°C/W and RθJC = 27°C/W (Note 10), enabling efficient heat transfer to PCB copper. ESD ratings meet JEDEC Class 3A HBM (4000V) and CDM (1000V), suitable for assembly in controlled industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum safe collector-emitter voltage before avalanche conduction in linear or switching operation. |
| IC (continuous) | 1 A - Sustained DC collector current capability under 25°C ambient with adequate PCB copper area. |
| VCE(sat) | <500 mV @ 0.5A/50mA - Low saturation voltage ensures minimal power loss and heat generation in switch-mode applications. |
| fT | 150 MHz - Gain-bandwidth product confirms suitability for audio drivers and low-MHz signal amplification stages. |
| RθJA | 125 °C/W - Thermal resistance measured on 15mm×15mm 1oz FR4; defines maximum power dissipation (0.55W) at +25°C ambient. |
| hFE | 100–250 @ 150mA/2V - High and stable DC current gain enables predictable base drive sizing in amplifier and switch circuits. |
| Cobo | 25 pF @ 10V - Output capacitance impacts high-frequency response and switching speed; critical for bandwidth-limited AF stages. |
Pinout & Package
BCX5416TA is housed in a surface-mount SOT89 package with three terminals: Collector (exposed pad and pin 1), Base (pin 2), and Emitter (pin 3). The molded plastic body meets UL 94V-0 flammability rating and features matte tin finish leads solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Collector) | Main current-carrying terminal, electrically connected to exposed metal pad | Primary thermal path to PCB; must be soldered to ≥15mm² copper for rated 0.55W dissipation. |
| Pin 2 (Base) | Control input for minority-carrier injection | Requires current-limited drive (max IB = 100mA DC); base-emitter turn-on ~0.85V typical at 0.5A IC. |
| Pin 3 (Emitter) | Current return path and reference node | Connected internally to substrate; used as common emitter configuration reference in amplifier topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | <500mV at 0.5A ensures ≤250mW conduction loss in switching mode, reducing thermal load on PCB layout. |
| High fT | 150MHz supports faithful reproduction of audio harmonics up to 20kHz with margin, avoiding gain roll-off in driver stages. |
| Thermally enhanced SOT89 | RθJL = 13°C/W enables direct heat transfer from junction to PCB copper, improving reliability in sustained 0.5A operation. |
| AEC-Q101 readiness | Manufactured in IATF 16949 certified facilities; PPAP-capable and qualified for automotive change control upon request. |
| Green compound | Halogen- and antimony-free molding compound (<900ppm Br, <900ppm Cl, <1000ppm Sb) meets global environmental compliance mandates. |
Applications
| Audio Frequency Driver | Automotive Interior Lighting Control |
|---|---|
Use Scenario: Driving 8Ω speaker loads in portable audio amplifiers or automotive head units requiring clean mid-band amplification. IC Role / Device Role / Timing Role: NPN medium-power switch/amplifier operating in Class AB or saturated switch mode to deliver 0.5–1W output power. Use Value: Low VCE(sat) minimizes distortion and heat rise during peak current delivery; hFE stability ensures consistent gain across temperature. |
Use Scenario: PWM-controlled LED backlighting for instrument clusters and center displays in vehicles meeting AEC-Q101 requirements. IC Role / Device Role / Timing Role: Medium-current switching element controlling 350mA–700mA LED strings via microcontroller GPIO with base resistor limiting. Use Value: 60V VCEO provides margin against load-dump transients; 150MHz fT supports clean 1–20kHz PWM edges without ringing. |
| Industrial Relay Driver | DC Motor Speed Control (Small Brushed) |
Use Scenario: Interfacing microcontrollers to 12V/24V electromagnetic relays in PLC I/O modules and building automation panels. IC Role / Device Role / Timing Role: NPN switch sinking relay coil current (typically 40–100mA), with flyback diode integrated externally or on board. Use Value: 1A IC rating allows robust overcurrent margin; 4000V HBM ESD withstand protects against handling damage during manual assembly. |
Use Scenario: Controlling 5–12V brushed DC motors (e.g., HVAC actuators, fan modules) using PWM from MCU with discrete transistor stage. IC Role / Device Role / Timing Role: Medium-power current switch modulating motor current up to 800mA; operated in saturation for minimal conduction loss. Use Value: RθJC = 27°C/W (Note 10) enables stable operation at 0.8A with modest heatsinking; low VCE(sat) preserves battery runtime. |
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 |
|---|---|---|---|
| BCX54TA | VCEO = 45V (vs. 60V); identical SOT89 package, marking "BA", same hFE range and fT | Limited to ≤40V supply rails; unsuitable for 48V automotive or industrial bus interfaces where transient margin is critical | Select when system max VCE remains <40V and cost optimization is prioritized over voltage headroom |
| MJD127G | TO-252 package, VCEO = 100V, IC = 2A, RθJA = 60°C/W (on 50mm² copper), higher power handling | Requires larger PCB footprint and different thermal layout; suited for >1W continuous dissipation scenarios | Choose when >0.55W power dissipation or >60V operation is required; not drop-in compatible due to package and pinout mismatch |
Compared with BCX54TA, BCX5416TA offers 15V higher VCEO headroom for transient resilience without changing footprint; versus MJD127G, it trades higher voltage/power capability for compact SOT89 integration and lower assembly cost in space-constrained AF and lighting modules.
Availability
BCX5416TA is available at Aetrix Electronics and suitable for audio frequency drivers, automotive interior lighting control, industrial relay drivers, and small brushed DC motor speed control requiring stable component supply and automotive-grade traceability.
Supply support for BCX5416TA 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, manufacturing, and sales operations across Asia, Europe, and the Americas.
BCX5416TA belongs to Diodes' BCX54/55/56 NPN/PNP medium-power transistor family, designed specifically for cost-sensitive, thermally constrained AF amplification, switching, and automotive-qualified interface applications.
FAQ
What is the maximum continuous collector current for BCX5416TA?
The BCX5416TA supports 1A continuous collector current (IC) at TA = +25°C when mounted on a 15mm × 15mm 1oz copper area on FR4 PCB. Derating applies above +25°C ambient per the published thermal curve-e.g., ~0.7A at +85°C ambient.
Is BCX5416TA qualified for automotive use?
BCX5416TA is manufactured in IATF 16949 certified facilities and supports PPAP documentation. While not pre-certified to AEC-Q101 out-of-box, Diodes Incorporated confirms it meets AEC-Q101 stress test requirements upon customer request and change control agreement.
How does the SOT89 package affect thermal performance?
The SOT89's exposed collector pad provides a low-resistance thermal path to PCB copper. With 15mm × 15mm 1oz copper, RθJA is 125°C/W; increasing copper area to 50mm × 50mm reduces it to 60°C/W, enabling up to 2.0W pulse power dissipation per datasheet Note 8.
What is the base-emitter turn-on voltage at typical operating conditions?
VBE(on) is typically 0.85V at IC = 500mA and VCE = 2V, with a maximum of 1.0V under those conditions. This value remains stable across –55°C to +125°C junction temperature, supporting predictable base resistor sizing in production designs.
BCX5416TA 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):
- 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
BCX5416TA FAQ
1.How can I place an order for BCX5416TA through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX5416TA 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 BCX5416TA reliable?
The price and inventory of BCX5416TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5416TA is usually 5 days.
3.What payment methods are accepted for BCX5416TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5416TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX5416TA?
BCX5416TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX5416TA 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 BCX5416TA?
For technical support, including BCX5416TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5416TA requirements.
6.How does Aetrix verify that BCX5416TA is sourced from the original manufacturer or authorized distributors?
All BCX5416TA 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 BCX5416TA meets industry standards.
7.What is the process for return or replacement of BCX5416TA?
All BCX5416TA units undergo pre-shipment inspection (PSI). If there is an issue with BCX5416TA, 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 BCX5416TA part is unused and in its original packaging.
Return procedure for BCX5416TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCX5416TA Tags
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