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Diodes Incorporated ZXTN25020DGTA
- Part No.:
- ZXTN25020DGTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
ZXTN25020DGTA.pdf
- Description:
- TRANS NPN 20V 7A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,866
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Product details
Overview
ZXTN25020DGTA from Diodes Incorporated is a 20V NPN high-gain bipolar junction transistor in SOT223 package, rated for 7A continuous collector current, with VCE(sat) < 48 mV at 1 A/100 mA and RCE(sat) = 31 mΩ. It features BVCEX > 100 V and is AEC-Q101 qualified for automotive reliability. It serves as a high-current switching element in DC-DC converter power stages.
For engineers reviewing the ZXTN25020DGTA datasheet, ZXTN25020DGTA pinout, ZXTN25020DGTA application, or ZXTN25020DGTA equivalent, key selection criteria include saturation voltage at high IC, thermal resistance to ambient (RθJA = 23.5 °C/W with 50 mm × 50 mm 2 oz copper), safe operating area limits, and complementary PNP pairing with ZXTP25020DG.
Technical Context
This NPN transistor operates in linear and saturated switching modes, with guaranteed BVCEO = 20 V and BVCEX = 100 V for forward-blocking applications. Its high DC current gain (hFE = 50–900 across 10 mA–7 A) supports low-base-drive designs in high-efficiency power control.
Thermal performance is defined across three mounting conditions: RθJA = 104 °C/W (15 mm × 15 mm 1 oz Cu), 78 °C/W (25 mm × 25 mm), and 23.5 °C/W (50 mm × 50 mm 2 oz Cu). Transient thermal impedance data enables accurate pulsed-power derating up to 5.3 W DC dissipation under optimized layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum safe collector-emitter voltage in normal forward-active mode |
| IC (continuous) | 7 A - Supports high-current load switching without forced cooling in compact layouts |
| VCE(sat) | < 48 mV @ 1 A/100 mA - Minimizes conduction loss in low-voltage, high-current switches |
| RCE(sat) | 31 mΩ - Enables direct calculation of on-state power loss (P = I² × R) |
| hFE | 50–900 - Wide gain range allows flexible base drive design across load currents |
| fT | 215 MHz - Supports switching frequencies up to ~10–20 MHz in optimized circuits |
| RθJA (max) | 23.5 °C/W - Achievable with 50 mm × 50 mm 2 oz copper; defines minimum heatsinking requirement |
Pinout & Package
Package: SOT223 - Surface-mount plastic package with exposed collector tab for thermal and electrical connection; 0.112 g mass; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current output terminal | Exposed metal tab - must be soldered to large copper pour for thermal management and low-inductance return path |
| Emitter (E) | Main current return path | Internally connected to substrate; lowest impedance path to ground plane in switching configurations |
| Base (B) | Control input | Low-impedance gate-like input requiring ~700 mA drive for full 7 A saturation; sensitive to ESD (HBM 4 kV) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade temperature cycling (-55°C to +150°C) and reliability stress testing |
| Low VCE(sat) at high current | 40–48 mV @ 1 A enables <100 mW conduction loss per device in 12 V systems |
| High BVCEX (100 V) | Supports operation in flyback or boost topologies with reflected voltage spikes up to 100 V |
| Complementary PNP pair | ZXTP25020DG shares identical package, ratings, and thermal profile for H-bridge symmetry |
| Green, halogen-free construction | Meets RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity without lead or antimony compounds |
Applications
| DC-DC Converter Power Switch | Automotive Motor Driver Stage |
|---|---|
Use Scenario: High-efficiency buck converter in 12 V automotive subsystems delivering up to 5 A output. IC Role / Device Role / Timing Role: Main NPN switch controlling energy transfer into output inductor; driven by PWM controller with fast turn-on/turn-off timing. Use Value: Low RCE(sat) reduces conduction loss; high fT ensures clean switching edges at 200–500 kHz. | Use Scenario: Half-bridge driver for 24 V brushed DC motors in HVAC actuators or seat positioners. IC Role / Device Role / Timing Role: High-side NPN switch paired with ZXTP25020DG low-side PNP; synchronized by isolated gate driver. Use Value: Matched thermal resistance and saturation characteristics enable balanced current sharing and thermal tracking. |
| Relay/Solenoid Interface | Linear Regulator Pass Element |
Use Scenario: Solid-state replacement for electromechanical relays driving 24 V solenoids in industrial control panels. IC Role / Device Role / Timing Role: Saturated switch providing low-impedance path between supply and solenoid coil; base driven via optocoupler-isolated logic. Use Value: VCE(sat) < 75 mV at 2 A limits self-heating to <150 mW, eliminating need for heatsink in sealed enclosures. | Use Scenario: Pass transistor in adjustable 5 V/3 A linear regulator for noise-sensitive analog circuitry. IC Role / Device Role / Timing Role: Series pass element dissipating excess voltage; biased in active region with feedback-controlled base current. Use Value: High hFE (≥250 @ 2 A) reduces base drive current burden on error amplifier; RθJL = 16 °C/W enables direct tab-to-heatsink mounting. |
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 |
|---|---|---|---|
| ZXTN25040DGTA | Higher VCEO = 40 V; lower hFE (min 100 @ 7 A); same SOT223 package | Better suited for 36 V industrial bus systems; less gain margin for marginal base drive | Select when higher breakdown voltage is required and base drive capability is sufficient |
| MJD122G | Lower IC = 3 A; VCE(sat) = 1.2 V @ 2 A; TO-220 package; no AEC-Q101 rating | Requires external heatsink; unsuitable for automotive under-hood use | Choose only for cost-sensitive, non-automotive 24 V applications with relaxed thermal constraints |
Compared with ZXTN25020DGTA, ZXTN25040DGTA trades gain for higher voltage tolerance, while MJD122G sacrifices current capacity, thermal efficiency, and automotive qualification for legacy footprint compatibility.
Availability
ZXTN25020DGTA is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and relay/solenoid interface circuits requiring stable component supply and AEC-Q101 compliance.
Supply support for ZXTN25020DGTA 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 and manufacturing operations across Asia and the Americas.
ZXTN25020DGTA belongs to the ZXT series of high-gain, high-current transistors engineered for automotive and industrial power switching, emphasizing low saturation voltage, robust SOA, and AEC-Q101 reliability.
FAQ
What is the maximum allowable continuous collector current for ZXTN25020DGTA at 100°C ambient?
At TA = 100°C, the maximum continuous IC is derated to approximately 4.2 A based on the 23.5 °C/W RθJA (50 mm × 50 mm 2 oz Cu) and 150°C max junction temperature. This assumes no additional heatsinking beyond the specified PCB copper area.
Can ZXTN25020DGTA be used in parallel configurations?
Yes, but only with matched devices and emitter-ballasting resistors (typically 0.1 Ω) to ensure current sharing. The positive temperature coefficient of VCE(sat) aids thermal stability, but parameter spread (hFE, VBE(sat)) requires careful binning or external balancing.
Is the SOT223 collector tab electrically isolated from other pins?
No - the collector tab is internally connected to the collector terminal and must be treated as a live, high-current node. It is not insulated; PCB layout must maintain clearance to adjacent traces and planes per 100 V working voltage requirements.
Does ZXTN25020DGTA support pulse operation beyond its DC ratings?
Yes - the Safe Operating Area (SOA) chart confirms single-pulse capability up to 7 A at 100 V for ≤100 µs, and 15 A peak current (ICM) with appropriate base drive. Pulse width and duty cycle must stay within transient thermal impedance limits shown in the datasheet Figure 4.
ZXTN25020DGTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 7 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 290mV @ 700mA, 7A
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 10mA, 2V
- Power - Max:
- 3 W
- Frequency - Transition:
- 215MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
ZXTN25020DGTA FAQ
1.How can I place an order for ZXTN25020DGTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTN25020DGTA 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 ZXTN25020DGTA reliable?
The price and inventory of ZXTN25020DGTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN25020DGTA is usually 5 days.
3.What payment methods are accepted for ZXTN25020DGTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN25020DGTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTN25020DGTA?
ZXTN25020DGTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTN25020DGTA 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 ZXTN25020DGTA?
For technical support, including ZXTN25020DGTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN25020DGTA requirements.
6.How does Aetrix verify that ZXTN25020DGTA is sourced from the original manufacturer or authorized distributors?
All ZXTN25020DGTA 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 ZXTN25020DGTA meets industry standards.
7.What is the process for return or replacement of ZXTN25020DGTA?
All ZXTN25020DGTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN25020DGTA, 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 ZXTN25020DGTA part is unused and in its original packaging.
Return procedure for ZXTN25020DGTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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