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Diodes Incorporated ZXTN2005ZQTA
- Part No.:
- ZXTN2005ZQTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
ZXTN2005ZQTA.pdf
- Description:
- TRANS NPN 25V 5.5A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
ZXTN2005ZQTA from Diodes Incorporated is a 25V NPN bipolar junction transistor (BJT) in SOT89 package, rated for 5.5A continuous collector current and 20A peak pulse current, with VCE(SAT) = 25 mΩ at 6.5A and hFE ≥ 300 at 10mA - designed for automotive-grade motor driving, solenoid control, and DC-DC module switching.
For engineers reviewing the ZXTN2005ZQTA datasheet, ZXTN2005ZQTA pinout, ZXTN2005ZQTA application, or ZXTN2005ZQTA equivalent, key selection criteria include its AEC-Q101 qualification, low RCE(SAT), thermal performance on 25 mm² copper, and SOT89 mechanical compatibility with high-current PCB layouts.
Technical Context
This NPN BJT operates as a medium-power switch with strict automotive reliability requirements. Its BVCEO = 25 V, VBE(SAT) = 950 mV at 6.5A/150mA, and fT = 150 MHz support fast-switching DC loads while maintaining low conduction loss.
The device uses an exposed-collector SOT89 thermally enhanced package, delivering RθJA = 83 °C/W on 25 mm × 25 mm 1 oz copper. It sustains operation from −55 °C to +150 °C and meets JEDEC HBM ESD rating of 4 kV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 25 V - Maximum safe collector-emitter voltage under continuous DC operation. |
| IC (continuous) | 5.5 A - Sustained current handling capability without thermal runaway on standard PCB layout. |
| VCE(SAT) | 25 mV @ 6.5A/150mA - Enables <0.17 W conduction loss in high-current switching nodes. |
| hFE | 300 @ 10mA, 40 @ 20A - Maintains usable gain across wide load range, supporting robust base drive design. |
| RθJA | 83 °C/W - Thermal resistance enables 1.5 W dissipation at 25°C ambient with minimal heatsinking. |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronics including temperature cycling and HTRB. |
| ESD HBM | 4,000 V - Robustness against human-body discharge during assembly and field service. |
Pinout & Package
Package: SOT89 - surface-mount, thermally enhanced plastic case with exposed collector pad for direct PCB copper thermal coupling. Dimensions per Diodes Inc. outline drawing: 4.50 mm × 2.50 mm × 1.50 mm (L × W × H), weight ≈ 0.05 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current path output terminal | Exposed metal pad - must be soldered to ≥25 mm² 1 oz copper for rated power dissipation. |
| Emitter (E) | Current return path to ground/reference | Low-inductance connection critical for minimizing switching overshoot in motor/solenoid drivers. |
| Base (B) | Control input for transistor biasing | Requires ≤150 mA drive for full saturation at 6.5A; VBE(SAT) = 950 mV confirms silicon BJT behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Low saturation voltage | VCE(SAT) = 25 mV @ 6.5A reduces I²R losses by >40% vs. typical 50–100 mΩ alternatives. |
| AEC-Q101 qualification | Validated for automotive underhood environments including 1000-hr HTOL, TC1000, and HTRB testing. |
| High hFE linearity | hFE ≥ 275 up to 7A ensures stable current gain across motor startup surge currents. |
| Green packaging | Halogen- and antimony-free molding compound (<900 ppm Br+Cl, <1000 ppm Sb) meets automotive RoHS 3 compliance. |
Applications
| Emergency Lighting Circuits | Motor Driving (Including DC Fans) |
|---|---|
Use Scenario: High-reliability switching of LED strings during vehicle power failure. IC Role / Device Role / Timing Role: NPN switch controlling cathode-side current path with fast turn-on (tON = 33 ns). Use Value: Low VCE(SAT) minimizes heat generation in sealed lighting housings; AEC-Q101 ensures 15-year field life. |
Use Scenario: PWM-controlled 12V/24V DC fan in engine bay or HVAC system. IC Role / Device Role / Timing Role: Medium-power switching element in half-bridge or single-ended driver stage. Use Value: 20A peak rating handles fan stall current; RθJA = 83 °C/W allows operation at 105°C ambient without derating. |
| Solenoid, Relay and Actuator Drivers | DC-DC Modules |
Use Scenario: Driving 12V automotive solenoids (e.g., transmission shift actuators) requiring 3–5A steady-state current. IC Role / Device Role / Timing Role: High-gain saturated switch replacing discrete Darlington pairs. Use Value: hFE ≥ 40 at 20A enables simple resistor-based base drive; low VBE(SAT) improves efficiency over MOSFETs at low VGS. |
Use Scenario: Primary-side switch in non-isolated buck or boost converters for infotainment power rails. IC Role / Device Role / Timing Role: Fast-switching NPN transistor in self-oscillating or controller-driven topologies. Use Value: fT = 150 MHz supports >100 kHz switching; SOA curve permits 100 µs pulses up to 60 V/20 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN2010ZQTA | Higher VCEO = 30 V, same SOT89 package, but VCE(SAT) = 35 mV @ 6.5A | Better for 24V systems with higher transient margin; slightly higher conduction loss | Select when system max VCE exceeds 25 V but thermal budget allows +40% VCE(SAT) |
| MJD122G | TO-252 package, VCEO = 100 V, IC = 8 A, VCE(SAT) = 1.2 V @ 3 A - significantly higher saturation voltage | Used in industrial 48V DC-DC where voltage margin outweighs efficiency needs | Choose only if board space allows TO-252 and 1.2 V drop is acceptable in thermal design |
Compared with ZXTN2005ZQTA, ZXTN2010ZQTA trades marginal voltage headroom for reduced efficiency, while MJD122G sacrifices saturation performance for legacy package compatibility and higher breakdown - neither offers drop-in replacement without layout or thermal redesign.
Availability
ZXTN2005ZQTA is available at Aetrix Electronics and suitable for emergency lighting circuits, motor driving (including DC fans), and solenoid/actuator drivers requiring stable component supply with automotive-grade reliability and traceable sourcing.
Supply support for ZXTN2005ZQTA 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.
ZXTN2005ZQTA belongs to Diodes' automotive-qualified bipolar transistor product line, engineered specifically for high-current, thermally constrained switching in under-hood and cabin electronics.
FAQ
Is ZXTN2005ZQTA suitable for use in AEC-Q101-compliant designs?
Yes - ZXTN2005ZQTA is fully qualified to AEC-Q101 Rev D standards, including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST). PPAP documentation is available upon request for automotive production programs.
What is the recommended PCB layout for thermal performance?
Mount the SOT89 package with the exposed collector pad soldered to ≥25 mm² of 1 oz copper on the top layer, connected via ≥4 thermal vias (0.3 mm diameter) to inner or bottom-layer ground planes. This achieves the specified RθJA = 83 °C/W and 1.5 W power rating.
Can ZXTN2005ZQTA replace a MOSFET in low-voltage switching applications?
Yes, where gate drive simplicity and cost matter more than ultra-low RDS(on). Its 25 mV VCE(SAT) at 6.5A yields lower conduction loss than many logic-level MOSFETs below 10 V VGS, and it avoids gate charge issues in noisy automotive environments.
Does ZXTN2005ZQTA require a base resistor, and how is it calculated?
Yes - a series base resistor limits IB to prevent overdrive. For 6.5A IC and hFE = 40 (min at high current), IB ≥ 163 mA is needed. With 3.3 V MCU drive and VBE(SAT) = 0.95 V, RB = (3.3 − 0.95)/0.163 ≈ 14 Ω (1/4 W minimum).
ZXTN2005ZQTA 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):
- 5.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 25 V
- Vce Saturation (Max) @ Ib, Ic:
- 200mV @ 150mA, 6.5A
- Current - Collector Cutoff (Max):
- 20nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 1A, 1V
- Power - Max:
- 1.5 W
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
ZXTN2005ZQTA FAQ
1.How can I place an order for ZXTN2005ZQTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTN2005ZQTA 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 ZXTN2005ZQTA reliable?
The price and inventory of ZXTN2005ZQTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN2005ZQTA is usually 5 days.
3.What payment methods are accepted for ZXTN2005ZQTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN2005ZQTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTN2005ZQTA?
ZXTN2005ZQTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTN2005ZQTA 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 ZXTN2005ZQTA?
For technical support, including ZXTN2005ZQTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN2005ZQTA requirements.
6.How does Aetrix verify that ZXTN2005ZQTA is sourced from the original manufacturer or authorized distributors?
All ZXTN2005ZQTA 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 ZXTN2005ZQTA meets industry standards.
7.What is the process for return or replacement of ZXTN2005ZQTA?
All ZXTN2005ZQTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN2005ZQTA, 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 ZXTN2005ZQTA part is unused and in its original packaging.
Return procedure for ZXTN2005ZQTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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