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Diodes Incorporated ZXTN19020DZQTA
- Part No.:
- ZXTN19020DZQTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
ZXTN19020DZQTA.pdf
- Description:
- TRANS NPN 20V 7.5A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:165
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Product details
Overview
ZXTN19020DZQTA from Diodes Incorporated is a 20V NPN high-gain bipolar junction transistor in SOT89 package, rated for 7.5A continuous collector current and 70V collector-base breakdown voltage. It delivers VCE(sat) < 35mV at 1A with RCE(sat) = 21mΩ, and is AEC-Q101 qualified for automotive-grade reliability in high-current switching roles such as MOSFET gate driving and LED driving.
For engineers reviewing the ZXTN19020DZQTA datasheet, ZXTN19020DZQTA pinout, ZXTN19020DZQTA application, or ZXTN19020DZQTA equivalent, key selection criteria include its low saturation voltage under high-current conditions, thermal resistance of 28°C/W (with 50mm × 50mm copper), and validated performance across -55°C to +150°C operating range.
Technical Context
This NPN BJT operates as a high-current, low-saturation switch optimized for forward-active and saturation-region use in power control circuits. Its BVCEX > 70V enables robust blocking during transient overvoltage events, while hFE = 300–900 (at IC = 100mA–20A) supports wide base-drive flexibility across load conditions.
The device uses an exposed-collector SOT89 thermally enhanced package with RθJL = 4.69°C/W (junction-to-case), enabling efficient heat transfer to PCB copper. Its fT = 160MHz and fast switching times (td = 129ns, tr = 96ns, tf = 90ns) support high-frequency PWM control in boost converters and strobe drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20V - Maximum safe collector-emitter voltage in normal forward-active operation |
| IC (continuous) | 7.5A - Sustained current-handling capability without thermal runaway on 50mm × 50mm copper |
| VCE(sat) | <35mV @ 1A/100mA - Enables sub-50mW conduction loss in high-duty-cycle switching |
| RCE(sat) | 21mΩ - Directly determines I²R loss and thermal rise under DC or pulsed loads |
| hFE | 300–900 - Wide DC current gain range supports both low- and high-base-drive designs |
| fT | 160MHz - Supports stable amplification and fast turn-off in high-speed digital switching |
| RθJA | 28°C/W - Achievable with 50mm × 50mm 1oz copper; defines max ambient temperature for 1.1W dissipation |
Pinout & Package
SOT89 package with exposed collector tab for thermal and electrical connection; molded green plastic case (UL 94V-0), matte tin-plated leads, 0.05g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current output path and thermal interface | Exposed metal tab - must be soldered to ≥50mm² copper pour for RθJA = 28°C/W |
| Emitter (E) | Current return path and reference node | Low-inductance connection critical for minimizing VCE overshoot during switching |
| Base (B) | Control input for current amplification | Requires ≤1A peak drive; VBE(sat) = 1.1V @ 7.5A ensures predictable turn-on threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including motor driving and emergency lighting under temperature cycling and HBM/MM ESD stress |
| Low VCE(sat) & RCE(sat) | Reduces conduction losses by >40% vs. standard 20V NPN transistors at 1–7.5A, lowering heatsink requirements |
| High fT & fast switching | Enables clean 100kHz+ PWM operation in boost converters and CCFL inverters with minimal switching loss |
| Exposed collector thermal pad | Allows direct thermal coupling to PCB ground plane, achieving RθJL = 4.69°C/W for sustained 7.5A operation |
Applications
| Emergency Lighting Control | MOSFET Gate Driving |
|---|---|
Use Scenario: High-reliability current switching in automotive cabin emergency lighting during battery brownout conditions. IC Role / Device Role / Timing Role: NPN switch controlling LED string current via constant-current feedback loop. Use Value: 7.5A rating and -55°C to +150°C operation ensure fail-safe illumination under extreme thermal and voltage stress. |
Use Scenario: Active pull-down stage in high-side gate driver circuits for 40V automotive MOSFETs. IC Role / Device Role / Timing Role: Fast-saturation NPN sink providing <100ns turn-off assist to reduce Miller plateau time. Use Value: VCE(sat) < 35mV at 1A minimizes voltage drop across driver stage, preserving gate drive margin. |
| Camera Strobe Flash | Boost Converter Switch |
Use Scenario: High-current pulse switching for xenon flash tubes in automotive ADAS cameras. IC Role / Device Role / Timing Role: Primary energy discharge switch triggered by microcontroller GPIO. Use Value: 20A peak pulse rating and 398ns storage time enable precise 1–10ms flash duration control. |
Use Scenario: Main switching transistor in 12V-to-24V automotive boost converters for sensor power rails. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in non-isolated DC-DC topology. Use Value: RCE(sat) = 21mΩ reduces conduction loss by 35% vs. comparable MOSFETs below 2A, improving light-load efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN2002F | Lower VCEO = 12V; higher VCE(sat) = 60mV @ 1A; SOT23 package | Not suitable for 20V bus applications; limited to ≤1A continuous due to thermal constraints | Select only for space-constrained, low-power logic-level switching where 20V blocking is unnecessary |
| MMBT4401 | VCEO = 40V but IC = 600mA; hFE = 100 max; SOT23 package | Cannot support >0.6A continuous; unsuitable for motor or LED driving requiring >1A | Use only for signal-level amplification or low-current switching where thermal performance is not critical |
Compared with ZXTN2002F and MMBT4401, ZXTN19020DZQTA uniquely combines 20V blocking, 7.5A current capacity, and 21mΩ on-resistance in a thermally robust SOT89 package-making it the only viable option among the three for automotive-grade high-current switching above 1A.
Availability
ZXTN19020DZQTA is available at Aetrix Electronics and suitable for emergency lighting circuits, motor driving, and camera strobe applications requiring stable component supply with AEC-Q101 compliance and full traceability.
Supply support for ZXTN19020DZQTA 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 components for automotive, industrial, and power management markets.
ZXTN19020DZQTA belongs to Diodes' ZXT series of high-gain, high-current BJTs engineered specifically for automotive power switching applications demanding AEC-Q101 qualification and extended temperature operation.
FAQ
What is the maximum allowable junction temperature for ZXTN19020DZQTA?
The absolute maximum junction temperature is +150°C, with guaranteed operation across -55°C to +150°C ambient. Thermal derating begins at +25°C per the RθJA curve: at 100°C ambient, maximum power dissipation drops to ~0.55W for the 50mm × 50mm copper layout (RθJA = 28°C/W).
Can ZXTN19020DZQTA replace a MOSFET in low-voltage switching applications?
Yes-its 21mΩ RCE(sat) and <35mV VCE(sat) at 1A provide comparable conduction loss to many small-signal MOSFETs below 2A, with simpler gate drive (no gate charge or voltage threshold concerns). However, it lacks MOSFET's zero-gate-drive static state and requires continuous base current.
Is the SOT89 footprint compatible with standard reflow profiles?
Yes-the device is qualified for lead-free reflow per J-STD-020, with moisture sensitivity level 1. Standard Pb-free peak reflow temperature of 260°C is supported; the exposed collector pad requires adequate solder paste volume and stencil aperture design to ensure void-free thermal interface.
Does ZXTN19020DZQTA support reverse-biased operation (e.g., as a PNP complement)?
No-it is a dedicated NPN transistor with BVECO = 4.5V and VECX = 6V, limiting safe reverse emitter-collector voltage. Its structure is not symmetrical; using it in reverse bias risks premature breakdown or gain degradation and is outside AEC-Q101 qualification scope.
ZXTN19020DZQTA 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):
- 7.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 200mV @ 375mA, 7.5A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 100mA, 2V
- Power - Max:
- 1.1 W
- Frequency - Transition:
- 160MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
ZXTN19020DZQTA FAQ
1.How can I place an order for ZXTN19020DZQTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTN19020DZQTA 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 ZXTN19020DZQTA reliable?
The price and inventory of ZXTN19020DZQTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN19020DZQTA is usually 5 days.
3.What payment methods are accepted for ZXTN19020DZQTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN19020DZQTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTN19020DZQTA?
ZXTN19020DZQTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTN19020DZQTA 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 ZXTN19020DZQTA?
For technical support, including ZXTN19020DZQTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN19020DZQTA requirements.
6.How does Aetrix verify that ZXTN19020DZQTA is sourced from the original manufacturer or authorized distributors?
All ZXTN19020DZQTA 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 ZXTN19020DZQTA meets industry standards.
7.What is the process for return or replacement of ZXTN19020DZQTA?
All ZXTN19020DZQTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN19020DZQTA, 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 ZXTN19020DZQTA part is unused and in its original packaging.
Return procedure for ZXTN19020DZQTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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