My Inquiry
My Account
Diodes Incorporated ZXTN19020DZTA
- Part No.:
- ZXTN19020DZTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
ZXTN19020DZTA.pdf
- Description:
- TRANS NPN 20V 7.5A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:754
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ZXTN19020DZTA from Diodes Incorporated is a 20V NPN high-gain bipolar junction transistor in SOT89 package, rated for 7.5A continuous collector current, with VCE(sat) < 35mV at 1A and Rsat = 27mΩ. It serves as a low-loss power switch in motor drivers, LED drivers, and MOSFET gate drive stages.
For engineers reviewing the ZXTN19020DZTA datasheet, ZXTN19020DZTA pinout, ZXTN19020DZTA application, or ZXTN19020DZTA equivalent, key selection criteria include its 7.5A IC, 20V BVCEO, SOT89 thermal performance (RθJA = 28°C/W with short pulse), and verified use in CCFL inverters and emergency lighting circuits.
Technical Context
This NPN transistor is optimized for high-current, low-saturation switching in DC-DC and driver applications. Its BVCEO = 20V (min), hFE = 300–900 across 100mA–20A, and fT = 160MHz support fast turn-on/turn-off with minimal storage time (ts = 398ns) and low VBE(sat) = 1.0–1.1V at 7.5A.
Thermal design leverages the SOT89 collector-tab mounting: RθJC ≈ 2.4°C/W (note 9), enabling 4.46W steady-state dissipation on 15mm×15mm PCB (RθJA = 28°C/W for t < 5s), and up to 27.8W pulsed capability with appropriate derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20V min - defines maximum safe collector-emitter blocking voltage in forward-active switching |
| IC (cont.) | 7.5A - supports high-current loads without forced cooling in compact SOT89 footprint |
| VCE(sat) | 26mV typ @ 1A/100mA - enables sub-35mV saturation loss critical for efficiency in boost converters |
| hFE | 300 min @ 100mA - ensures robust base drive margin for reliable saturation at low IB |
| fT | 160MHz - supports >100kHz switching in gate driver and strobe applications |
| RθJA (pulsed) | 28°C/W - allows 4.46W continuous power with short-duration pulses on standard FR4 |
Pinout & Package
Package: SOT89 - surface-mount plastic case with exposed collector tab for thermal conduction; UL 94V-0 rated, 0.05g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E (Emitter) | Current sink terminal | Connected to ground or low-side return path; carries full load current |
| C (Collector) | Current source terminal | Exposed metal tab - must be soldered to copper pour for thermal management and electrical connection |
| B (Base) | Control input | Receives current-limited drive signal; requires ~375mA for full 7.5A saturation |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 26mV typical at 1A - reduces conduction loss by >40% vs. standard 100mV transistors in 12V motor drives |
| High hFE at high IC | 150 min @ 7.5A - enables direct microcontroller GPIO drive without external buffer stage |
| SOT89 thermal performance | RθJA = 28°C/W (pulsed) - delivers 4.46W dissipation with minimal board area, avoiding TO-220 footprint |
| AEC-Q101 readiness | Manufactured in IATF 16949 facilities - supports automotive-grade change control and PPAP upon request |
Applications
| Emergency Lighting Control | MOSFET Gate Driving |
|---|---|
Use Scenario: High-reliability DC-powered LED arrays activated during mains failure. IC Role / Device Role / Timing Role: Low-saturation NPN switch controlling battery-to-LED current path. Use Value: 26mV VCE(sat) minimizes voltage drop across switch, preserving battery runtime and enabling stable 20V LED string operation. |
Use Scenario: Level-shifting and current amplification for driving high-capacitance power MOSFET gates. IC Role / Device Role / Timing Role: Active pull-down transistor in totem-pole gate driver stage. Use Value: 160MHz fT and 398ns storage time enable clean 100kHz+ switching with controlled fall time and reduced shoot-through risk. |
| CCFL Backlight Inverter | Brushed DC Motor Driver |
Use Scenario: Resonant oscillator stage powering cold-cathode fluorescent lamps in industrial displays. IC Role / Device Role / Timing Role: Primary switching transistor in Royer or push-pull inverter topology. Use Value: 7.5A IC and 20V BVCEO sustain peak resonant currents while maintaining safe margin against flyback spikes. |
Use Scenario: H-bridge low-side switch for 12V/24V brushed motors in automotive HVAC actuators. IC Role / Device Role / Timing Role: High-current saturated switch controlling motor winding current direction. Use Value: 27mΩ Rsat limits I²R loss to <1.5W at 7.5A, reducing thermal stress versus discrete alternatives in space-constrained modules. |
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 |
|---|---|---|---|
| ZXTN2002ZTA | BVCEO = 25V, IC = 5A, VCE(sat) = 45mV @ 1A - lower current rating and higher saturation voltage | Less suitable for 7.5A motor loads; acceptable in 3A LED drivers where thermal margin is ample | Select when 25V blocking suffices and board layout favors identical SOT89 footprint with relaxed current demand |
| MJD127G | TO-252 package, IC = 8A, VCE(sat) = 1.5V @ 3A - higher VCE(sat), larger footprint, no exposed tab thermal path | Requires heatsink for >2A continuous; incompatible with SOT89 pad layout and automated assembly | Choose only if legacy TO-252 compatibility or higher absolute IC is mandatory and thermal design accommodates larger package |
Compared with ZXTN2002ZTA and MJD127G, ZXTN19020DZTA uniquely balances 7.5A current, 26mV saturation, and SOT89 thermal efficiency-making it optimal for space-constrained, high-efficiency 20V switching where both low loss and compact assembly are required.
Availability
ZXTN19020DZTA is available at Aetrix Electronics and suitable for emergency lighting circuits, motor driving, and LED driving requiring stable component supply and RoHS-compliant manufacturing.
Supply support for ZXTN19020DZTA 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.
ZXTN19020DZTA belongs to Diodes' high-gain, high-current bipolar transistor product line, engineered specifically for efficient power switching in automotive lighting, industrial motor control, and portable power conversion systems.
FAQ
What is the maximum continuous collector current for ZXTN19020DZTA?
The ZXTN19020DZTA is rated for 7.5A continuous collector current at TA = +25°C with specified PCB copper area per Note 5. Derating applies above 25°C ambient; at 100°C, maximum IC drops to approximately 4.5A based on linear derating from 1.8W power limit and RθJA = 68°C/W.
Is ZXTN19020DZTA qualified for automotive applications?
ZXTN19020DZTA is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101 out-of-box, Diodes offers AEC-Q101 qualification upon customer request with defined change control-making it suitable for automotive lighting and body electronics with program-specific validation.
How does the SOT89 package affect thermal performance?
The SOT89's exposed collector tab provides direct thermal conduction to PCB copper. With 15mm×15mm 1oz copper, RθJA is 28°C/W for t < 5s pulses, enabling 4.46W dissipation. For continuous operation, RθJA rises to 117°C/W on minimal copper, limiting steady-state power to ~1.1W unless enhanced layout is used.
Can ZXTN19020DZTA replace a MOSFET in low-voltage switching?
ZXTN19020DZTA functions as a saturated bipolar switch-not a voltage-controlled device like a MOSFET. It requires ~375mA base current for 7.5A collector drive, making it unsuitable as a direct MOSFET replacement in gate-driven topologies. However, it excels where low VCE(sat) and high current density in small footprint outweigh gate-drive complexity.
ZXTN19020DZTA 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):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 100mA, 2V
- Power - Max:
- 2.4 W
- Frequency - Transition:
- 160MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
ZXTN19020DZTA FAQ
1.How can I place an order for ZXTN19020DZTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTN19020DZTA 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 ZXTN19020DZTA reliable?
The price and inventory of ZXTN19020DZTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN19020DZTA is usually 5 days.
3.What payment methods are accepted for ZXTN19020DZTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN19020DZTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTN19020DZTA?
ZXTN19020DZTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTN19020DZTA 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 ZXTN19020DZTA?
For technical support, including ZXTN19020DZTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN19020DZTA requirements.
6.How does Aetrix verify that ZXTN19020DZTA is sourced from the original manufacturer or authorized distributors?
All ZXTN19020DZTA 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 ZXTN19020DZTA meets industry standards.
7.What is the process for return or replacement of ZXTN19020DZTA?
All ZXTN19020DZTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN19020DZTA, 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 ZXTN19020DZTA part is unused and in its original packaging.
Return procedure for ZXTN19020DZTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZXTN19020DZTA Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
