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Diodes Incorporated ZXTN25012EZTA
- Part No.:
- ZXTN25012EZTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
ZXTN25012EZTA.pdf
- Description:
- TRANS NPN 12V 6.5A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,368
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Product details
Overview
ZXTN25012EZTA from Diodes Incorporated is a 12V NPN high-gain bipolar junction transistor in SOT89 package, rated for 6.5A continuous collector current, 2.4W power dissipation, and VCE(sat) ≤ 38mV at 1A/100mA drive-optimized for low-loss switching in LED drivers, motor control, and MOSFET gate drive stages.
For engineers reviewing the ZXTN25012EZTA datasheet, ZXTN25012EZTA pinout, ZXTN25012EZTA application, or ZXTN25012EZTA equivalent, key selection criteria include its 12V VCEO, sub-40mV saturation voltage at high current, 500–1500 hFE gain range, thermal resistance of 28°C/W (with large copper), and complementary PNP pairing with ZXTP25012EZ.
Technical Context
This NPN transistor operates as a high-current, low-VCE(sat) switch with DC current gain (hFE) ranging from 500 at 10mA to 250 at 6.5A, supporting robust base-driven saturation across load conditions. Its fT of 260MHz enables fast switching in boost and Royer converters up to several hundred kHz.
Thermal performance is defined across five mounting configurations: RθJA varies from 117°C/W (15mm² PCB) to 28°C/W (short-duration pulse on large copper), while RθJC = 7.95°C/W confirms efficient heat transfer from junction to collector tab-critical for SOT89 surface-mount thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 12 V - Maximum safe collector-emitter voltage under active switching; defines upper rail limit in 12V systems. |
| IC (continuous) | 6.5 A - Sustained collector current capability without derating; supports high-brightness LED strings or small DC motors. |
| VCE(sat) @ 1A/100mA | ≤ 38 mV - Ultra-low conduction loss enabling <0.04W dissipation at 1A; reduces thermal stress in compact layouts. |
| hFE @ 6.5A | 250 min - Confirmed DC gain at full rated current ensures reliable base drive sizing for saturation. |
| fT | 260 MHz - Transition frequency supports clean turn-on/turn-off in high-frequency DC-DC topologies. |
| RθJC | 7.95 °C/W - Low junction-to-case thermal resistance enables direct heatsinking via collector tab in SOT89. |
| PD (max) | 2.4 W - Absolute steady-state power dissipation limit on 50mm² copper; derates linearly above +25°C ambient. |
Pinout & Package
Package: SOT89 - Surface-mount plastic package with exposed collector tab for thermal conduction and mechanical anchoring; UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | E | Current return path; connected to ground or low-side reference; electrically isolated from tab. |
| Pin 2 (Collector) | C | Main current output node; bonded directly to exposed metal tab for thermal and electrical conduction. |
| Pin 3 (Base) | B | Control input; requires ~130mA drive for full 6.5A saturation; sensitive to ESD per JEDEC JESD22-A114. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 31 mV typical at 1A/100mA - minimizes I²R loss and self-heating during sustained conduction. |
| High hFE range | 500–1500 - enables flexible base drive design across operating currents without external amplification. |
| Exposed collector tab | Thermal resistance RθJC = 7.95°C/W - allows direct thermal interface to PCB copper or heatsink for >2W operation. |
| Automotive-ready construction | AEC-Q101 qualified option available - supports functional safety requirements in lighting and actuation subsystems. |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant - meets global environmental regulations without performance trade-offs. |
Applications
| LED Driving | Motor Driving |
|---|---|
Use Scenario: High-brightness automotive LED headlamp or daytime running light (DRL) module with PWM dimming. IC Role / Device Role / Timing Role: Low-side constant-current switch controlling LED string current up to 6.5A. Use Value: 38mV VCE(sat) limits conduction loss to <250mW at 6.5A, reducing heatsink size and improving system efficiency. |
Use Scenario: Brushed DC motor driver in HVAC actuators or power seat modules. IC Role / Device Role / Timing Role: High-current saturated switch in H-bridge low-side leg or single-direction drive stage. Use Value: 6.5A IC rating and 2.4W PD support intermittent 5A loads without thermal shutdown in sealed enclosures. |
| Boost Converters | MOSFET Gate Drivers |
Use Scenario: Primary switch in 12V-input boost converter powering 24V industrial sensors or displays. IC Role / Device Role / Timing Role: Fast-switching NPN transistor replacing MOSFET in cost-sensitive, medium-frequency (<500kHz) topologies. Use Value: 260MHz fT and 71ns delay time enable stable operation with minimal gate drive complexity and low BOM count. |
Use Scenario: Level-shifted gate driver for N-channel power MOSFETs in battery protection ICs or load switches. IC Role / Device Role / Timing Role: Saturated switch translating logic-level signals to 12V gate drive with low propagation delay. Use Value: Sub-100ns total switching time (td+tr+ts+tf) ensures precise timing alignment and reduced shoot-through risk in half-bridge control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-current switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN25040F | Higher VCEO = 40V; lower hFE (min 100 @ 6.5A); same SOT89 package | Better suited for 24–36V industrial supplies; less gain margin at high current | Select when higher breakdown voltage is required and base drive capability is constrained. |
| MMBT4401LT1G | Lower IC = 600mA; VCE(sat) = 750mV @ 150mA; SOT23 package | Only suitable for signal-level or low-power switching; not a drop-in replacement | Use only for prototyping or low-current auxiliary functions-not for 6.5A load replacement. |
Compared with ZXTN25012EZTA, ZXTN25040F trades gain for higher voltage tolerance, while MMBT4401LT1G lacks both current and thermal capability-making ZXTN25012EZTA uniquely balanced for 12V, high-current, thermally constrained designs.
Availability
ZXTN25012EZTA is available at Aetrix Electronics and suitable for LED driving, motor control, and boost converter applications requiring stable component supply, automotive-grade traceability, and long-term production continuity.
Supply support for ZXTN25012EZTA 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, automotive, and consumer markets.
ZXTN25012EZTA belongs to Diodes' high-gain, high-current bipolar transistor family-designed specifically for efficient, thermally robust switching in space-constrained 12V systems where MOSFET gate drive or LED/motor control demands low saturation loss and predictable gain.
FAQ
What is the maximum continuous collector current for ZXTN25012EZTA?
The ZXTN25012EZTA is rated for 6.5A continuous collector current at TA = +25°C with appropriate PCB copper area (50mm × 50mm, 1oz). Derating applies above ambient temperature-linear derating factor is 19.2 mW/°C when mounted on large copper, dropping usable current by ~100mA per °C rise above 25°C.
Is ZXTN25012EZTA pin-compatible with other SOT89 transistors?
ZXTN25012EZTA uses standard SOT89 pinout (Emitter-Collector-Base), matching industry convention. However, electrical characteristics-including gain, saturation voltage, and thermal resistance-are specific to this device; substitution requires verification of hFE, VCE(sat), and thermal layout compatibility-not just pin alignment.
Does ZXTN25012EZTA meet AEC-Q101 requirements?
The ZXTN25012EZTA is not automatically AEC-Q101 qualified; however, Diodes offers an automotive-grade variant (ZXTN25012EZX) that is AEC-Q101 qualified, PPAP-capable, and manufactured in IATF 16949 certified facilities. Standard ZXTN25012EZTA is intended for commercial/industrial use unless explicitly specified otherwise.
How should the collector tab be thermally managed on PCB?
The exposed collector tab must be soldered to a minimum 50mm² copper pour (1oz) for rated 2.4W operation. Thermal vias (≥4× 0.3mm diameter) beneath the tab into inner-layer or backside copper planes further reduce RθJA to ~28°C/W. Avoid solder mask over the tab area to ensure optimal thermal contact and mechanical adhesion.
ZXTN25012EZTA 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):
- 6.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 12 V
- Vce Saturation (Max) @ Ib, Ic:
- 270mV @ 130mA, 6.5A
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 500 @ 10mA, 2V
- Power - Max:
- 2.4 W
- Frequency - Transition:
- 260MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
ZXTN25012EZTA FAQ
1.How can I place an order for ZXTN25012EZTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTN25012EZTA 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 ZXTN25012EZTA reliable?
The price and inventory of ZXTN25012EZTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN25012EZTA is usually 5 days.
3.What payment methods are accepted for ZXTN25012EZTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN25012EZTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTN25012EZTA?
ZXTN25012EZTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTN25012EZTA 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 ZXTN25012EZTA?
For technical support, including ZXTN25012EZTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN25012EZTA requirements.
6.How does Aetrix verify that ZXTN25012EZTA is sourced from the original manufacturer or authorized distributors?
All ZXTN25012EZTA 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 ZXTN25012EZTA meets industry standards.
7.What is the process for return or replacement of ZXTN25012EZTA?
All ZXTN25012EZTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN25012EZTA, 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 ZXTN25012EZTA part is unused and in its original packaging.
Return procedure for ZXTN25012EZTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZXTN25012EZTA Tags
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