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Diodes Incorporated ZXTN25100DGTA
- Part No.:
- ZXTN25100DGTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
ZXTN25100DGTA.pdf
- Description:
- TRANS NPN 100V 3A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:43,383
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Product details
Overview
ZXTN25100DGTA from Diodes Incorporated is a 100V NPN high-gain bipolar junction transistor in SOT223 package, rated for 3A continuous collector current, with VCE(sat) < 100 mV at 1 A and RCE(sat) = 85 mΩ. It features BVCEO = 100 V, BVCEX > 180 V, and is AEC-Q101 qualified for automotive reliability. It serves as a high-voltage, high-current switch in DC-DC converter primary-side control circuits.
For engineers reviewing the ZXTN25100DGTA datasheet, ZXTN25100DGTA pinout, ZXTN25100DGTA application, or ZXTN25100DGTA equivalent, this part is selected for high-voltage switching where low saturation voltage, high hFE (up to 900), and thermal robustness under pulsed load conditions are critical - especially in PSU start-up and relay drive circuits requiring stable gain across -55°C to +150°C.
Technical Context
This NPN transistor operates in linear or saturated switching mode with verified forward-blocking capability up to 180 V (BVCEX) and reverse-blocking emitter-collector rating of 6 V (BVECO). Its hFE ranges from 10 at 3 A to 450 typical at 10 mA, enabling both high-current switching and precision biasing.
Thermal design is supported by RθJA = 23.5°C/W on 50 mm × 50 mm 2 oz copper, and safe operating area validated to 100 V / 3 A DC with pulse derating. ESD ratings meet HBM 4 kV and MM 400 V per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 100 V - Maximum continuous collector-emitter voltage before breakdown in standard configuration. |
| IC (continuous) | 3 A - Sustained collector current capability without thermal runaway on adequate PCB copper. |
| VCE(sat) | < 100 mV @ 1 A - Enables ultra-low conduction loss in high-efficiency switching applications. |
| hFE | 450 typ. @ 10 mA - Ensures reliable base drive margin and low IB requirements in driver stages. |
| RθJA | 23.5°C/W - Achievable junction-to-ambient thermal resistance with 50 mm × 50 mm 2 oz copper pad. |
| fT | 175 MHz - Supports fast switching transitions and moderate-frequency amplifier use. |
| ESD HBM | 4,000 V - Robust handling during board assembly and system integration without special precautions. |
Pinout & Package
Package: SOT223 - Surface-mount plastic package with exposed collector tab for thermal dissipation; 3-pin configuration (Collector, Emitter, Base) with Collector lead electrically connected to the heatsink pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | Emitting terminal for majority carriers | Reference node for base-emitter bias; connects to ground or low-side return path. |
| Pin 2 (Base) | Control electrode | Accepts low-current drive (≤600 mA) to saturate 3 A collector current; requires current-limiting resistor. |
| Pin 3 (Collector) | Current sink terminal | High-voltage, high-current output node; thermally coupled to PCB copper via exposed metal tab. |
Key Features
| Feature | Design Value |
|---|---|
| High BVCEX (>180 V) | Enables use in flyback and boost converters with reflected voltage spikes exceeding 100 V. |
| Low VCE(sat) & RCE(sat) | Reduces conduction losses below 300 mW at 1 A, improving efficiency in high-duty-cycle switching. |
| AEC-Q101 qualification | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock. |
| Green, halogen-free construction | Meets EU RoHS 2 and automotive material compliance requirements without bromine/chlorine/antimony restrictions. |
| High hFE stability over temperature | Maintains usable gain down to -55°C and up to +150°C, supporting industrial and automotive ambient ranges. |
Applications
| PSU Start-Up Circuit | DC-DC Converter Switch |
|---|---|
Use Scenario: Initiates auxiliary power supply in offline SMPS before main controller IC powers up. IC Role / Device Role / Timing Role: High-voltage NPN switch controlling current into startup resistor network. Use Value: Withstands 180 V transient during AC line surge while delivering 1–2 mA startup current reliably. |
Use Scenario: Primary-side switching element in non-isolated buck or SEPIC regulators. IC Role / Device Role / Timing Role: Fast-switching power transistor driven by PWM controller with low gate-drive demand. Use Value: 175 MHz fT and sub-100 ns rise/fall times support 500 kHz+ switching frequencies with minimal overlap loss. |
| Motor Drive Interface | Relay/Lamp Driver |
Use Scenario: Low-side driver for brushed DC motors in automotive HVAC or seat controls. IC Role / Device Role / Timing Role: Current-sinking switch interfacing microcontroller GPIO to motor winding. Use Value: 3 A continuous rating handles stall currents; 4 kV HBM ESD protects against inductive kickback coupling. |
Use Scenario: Solid-state replacement for electromechanical relays driving incandescent lamps or solenoids. IC Role / Device Role / Timing Role: High-gain saturated switch replacing mechanical contacts in control panels. Use Value: VCE(sat) < 100 mV eliminates need for heat sinks in 12 V/24 V systems with intermittent duty cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN2010F | Lower VCEO = 60 V; higher hFE = 600 min; SOT223 package same. | Not suitable for >60 V bus applications; better for low-voltage logic-level drive. | Select when operating voltage ≤60 V and higher DC gain is prioritized over voltage headroom. |
| MMBT4401 | VCEO = 40 V; IC = 600 mA; TO-236 package; no AEC-Q101 qualification. | Limited to low-power signal switching; unsuitable for automotive or high-current loads. | Choose only for cost-sensitive, non-automotive, sub-1 A applications where qualification is not required. |
Compared with ZXTN2010F and MMBT4401, ZXTN25100DGTA uniquely combines 100 V blocking, 3 A current, AEC-Q101 qualification, and low saturation voltage - making it the only option among the three viable for automotive DC-DC converters and industrial PSU start-up circuits.
Availability
ZXTN25100DGTA is available at Aetrix Electronics and suitable for DC-DC converters, motor drive interfaces, and relay/lamp drivers requiring stable component supply with automotive-grade reliability and traceable sourcing.
Supply support for ZXTN25100DGTA 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.
ZXTN25100DGTA belongs to Diodes' high-voltage bipolar transistor product line, engineered for robust switching in automotive and industrial power systems where voltage margin, thermal resilience, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum safe operating voltage for ZXTN25100DGTA in continuous DC mode?
The absolute maximum continuous collector-emitter voltage is VCEO = 100 V, verified per JEDEC JESD78 testing. Operation above this value risks avalanche breakdown even with current limiting. For transient spikes, BVCEX > 180 V applies only under forward-blocking conditions with base-emitter shorted or actively clamped.
Can ZXTN25100DGTA be used in linear amplifier configurations?
Yes - its hFE of 120–900 across 10 mA–3 A and fT = 175 MHz support Class-A or AB audio and signal amplification. However, thermal derating must be applied: maximum linear power dissipation is 5.3 W with 50 mm × 50 mm 2 oz copper, limited by RθJA = 23.5°C/W.
Is the SOT223 package lead finish compatible with lead-free reflow soldering?
Yes - the terminals feature matte tin plating and are qualified for lead-free reflow per IPC/JEDEC J-STD-020, with moisture sensitivity level (MSL) 1. No bake preconditioning is required, and peak reflow temperature up to 260°C is supported without degradation.
How does the complementary PNP ZXTP19100CG differ electrically from ZXTN25100DGTA?
ZXTP19100CG shares identical voltage ratings (VECO = 100 V, BVECX > 180 V), current rating (3 A), and SOT223 package but exhibits lower hFE (min 100 vs. 300 for ZXTN25100DGTA) and higher VEC(sat) (150 mV @ 1 A). It is optimized for complementary high-side switching rather than high-gain low-side drive.
ZXTN25100DGTA 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):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 100 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 600mA, 3A
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 10mA, 2V
- Power - Max:
- 3 W
- Frequency - Transition:
- 175MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
ZXTN25100DGTA FAQ
1.How can I place an order for ZXTN25100DGTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTN25100DGTA 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 ZXTN25100DGTA reliable?
The price and inventory of ZXTN25100DGTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN25100DGTA is usually 5 days.
3.What payment methods are accepted for ZXTN25100DGTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN25100DGTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTN25100DGTA?
ZXTN25100DGTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTN25100DGTA 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 ZXTN25100DGTA?
For technical support, including ZXTN25100DGTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN25100DGTA requirements.
6.How does Aetrix verify that ZXTN25100DGTA is sourced from the original manufacturer or authorized distributors?
All ZXTN25100DGTA 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 ZXTN25100DGTA meets industry standards.
7.What is the process for return or replacement of ZXTN25100DGTA?
All ZXTN25100DGTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN25100DGTA, 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 ZXTN25100DGTA part is unused and in its original packaging.
Return procedure for ZXTN25100DGTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZXTN25100DGTA Tags
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