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Diodes Incorporated FZT1053AQTA
- Part No.:
- FZT1053AQTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZT1053AQTA.pdf
- Description:
- TRANS NPN 75V 4.5A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,170
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Product details
Overview
FZT1053AQTA from Diodes Incorporated is a 75V NPN medium-power high-gain bipolar junction transistor in SOT223 package, rated for 4.5A continuous collector current, <120mV VCE(sat) at 1A, and hFE >300 at 1A - designed for automotive load switching and DC-DC converter primary-side switching.
For engineers reviewing the FZT1053AQTA datasheet, FZT1053AQTA pinout, FZT1053AQTA application, or FZT1053AQTA equivalent, key selection criteria include its AEC-Q101 qualification, 78mΩ RCE(sat) at 4.5A, 140MHz fT, low VBE(sat) (900–1000mV), and thermal resistance of 10.9°C/W (junction-to-lead).
Technical Context
This NPN BJT operates as a high-current, high-voltage linear or switching element with robust safe operating area up to 75V VCEO and 10A ICM. Its gain profile remains stable across 0.5A–4.5A collector currents (hFE = 300–450), supporting consistent drive in automotive power stages.
The device features low saturation voltage (≤21mV at 0.2A) and fast switching (ton = 162ns, toff = 900ns), enabling efficient operation in PWM-controlled motor drivers and LED ballasts where conduction loss and transition loss must both be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 75V - supports 48V automotive systems with 50% derating margin |
| IC (continuous) | 4.5A - enables direct driving of solenoids, fans, and small motors without external driver stage |
| VCE(sat) @ 1A | <120mV - limits conduction loss to <120mW at 1A, reducing thermal load on PCB |
| hFE @ 1A | >300 - ensures reliable saturation with modest base drive (e.g., 3.3mA IB for 1A IC) |
| RθJL | 10.9°C/W - enables 2.0W dissipation with ≤22°C rise above lead temperature in typical SOT223 mounting |
| fT | 140MHz - supports switching frequencies up to ~10MHz in optimized Class-C or RF amplifier use cases |
| ESD HBM | 4000V - meets automotive handling requirements without additional protection circuitry |
Pinout & Package
Package: SOT223 - surface-mount, thermally enhanced plastic case with exposed collector tab; 0.112g mass; UL 94V-0 rated molding compound; matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current sink terminal | Connected to ground or low-side return path; electrically isolated from tab |
| Base (B) | Control input | Receives current-limited drive signal; requires ≥10mA for full saturation at 4.5A IC |
| Collector (C) | Current source terminal | Mounted to large copper pour via exposed tab; carries full load current and heat |
| Tab (Collector) | Thermal & electrical node | Internally connected to collector; must be electrically tied to collector net for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments (-40°C to +150°C TJ) with PPAP documentation support |
| RCE(sat) = 78mΩ @ 4.5A | Reduces conduction loss to 1.58W at max rated current, easing thermal design vs. standard SOT223 transistors |
| VCE(sat) < 120mV @ 1A | Enables single-stage switching in 3.3V/5V logic-driven applications without level-shifting or gate drivers |
| Lead-free & Green | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); compliant with RoHS 3 and automotive ELV directives |
| Moisture Sensitivity Level 1 | No bake requirement prior to reflow; compatible with standard J-STD-020 assembly processes |
Applications
| Automotive Body Control Module (BCM) | Industrial DC-DC Converter Primary Switch |
|---|---|
Use Scenario: Driving 12V/24V solenoid locks, window lift motors, and HVAC actuators in vehicle door modules. IC Role / Device Role / Timing Role: High-side or low-side power switch controlled by microcontroller GPIO or dedicated driver IC. Use Value: 4.5A rating handles peak inrush of automotive loads; AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime. | Use Scenario: Primary-side switching transistor in non-isolated buck or flyback converters for industrial PLC I/O power rails. IC Role / Device Role / Timing Role: Main power switch modulated at 100–500kHz to regulate output voltage from 24–48V input. Use Value: 140MHz fT and 162ns ton support efficient high-frequency operation; low VCE(sat) minimizes conduction loss at high duty cycles. |
| LED Constant-Current Driver | High-Voltage Relay Replacement |
Use Scenario: Linear or PWM-controlled current regulation for high-brightness LED strings in commercial signage and street lighting. IC Role / Device Role / Timing Role: Series-pass transistor in analog dimming path or synchronous rectifier in buck-based LED driver. Use Value: Stable hFE >300 at 1A ensures precise current mirroring; 75V VCEO accommodates string voltages up to 60V. | Use Scenario: Solid-state replacement for electromechanical relays controlling 24V/48V DC loads in building automation and energy management systems. IC Role / Device Role / Timing Role: Low-impedance power path switch activated by logic-level control signal. Use Value: 78mΩ RCE(sat) delivers contact resistance comparable to mechanical relays; no bounce, wear, or arcing failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN19020CFFTA | Higher VCEO (100V), lower hFE (100–200), SOT89 package | Lacks AEC-Q101 qualification; not automotive-grade | Preferred for industrial 48V systems needing higher voltage margin but no automotive compliance |
| MJD127G | Lower VCEO (60V), higher IC (8A), TO-252 package | Requires larger footprint; no RθJL spec or AEC-Q101 data | Used where higher current is critical and board space allows DPAK; not drop-in for SOT223 layout |
Compared with ZXTN19020CFFTA and MJD127G, FZT1053AQTA uniquely balances automotive qualification, SOT223 thermal efficiency (RθJL = 10.9°C/W), and high gain at 4.5A - making it optimal for space-constrained, high-reliability 24V/48V switching where gain stability and ESD robustness matter.
Availability
FZT1053AQTA is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC power supplies, LED lighting drivers, and solid-state relay replacements requiring stable component supply and long-term lifecycle assurance.
Supply support for FZT1053AQTA 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 computing markets.
FZT1053AQTA belongs to Diodes' AEC-Q101-qualified bipolar transistor product line, engineered specifically for demanding automotive power switching applications where gain consistency, thermal performance, and process traceability are mandatory.
FAQ
What is the maximum allowable junction temperature for FZT1053AQTA?
The absolute maximum junction temperature is +150°C, with storage temperature matching this range. Operation at full 4.5A current requires thermal design ensuring TJ stays below 150°C - typically achieved using ≥25mm×25mm 2oz copper pad per the datasheet's Note 7 derating curve.
Is FZT1053AQTA pin-compatible with standard SOT223 NPN transistors like MMBT4401?
No - FZT1053AQTA uses emitter-base-collector (E-B-C) pinout in SOT223, whereas MMBT4401 uses emitter-collector-base (E-C-B). Incorrect orientation causes immediate failure; always verify top-marking and pin 1 location against Diodes' official SOT223 outline drawing DS41916.
Does FZT1053AQTA require a base resistor when driven by a 3.3V microcontroller GPIO?
Yes - a series base resistor is mandatory to limit IB. For 1A IC, hFE ≥300 implies minimum IB ≈ 3.3mA; with 3.3V GPIO and VBE(sat) ≈ 950mV, a 750Ω resistor sets appropriate drive while accounting for GPIO output impedance and tolerances.
Can FZT1053AQTA be used in linear regulator pass transistor applications?
Yes - its 3.0W PD rating (with proper heatsinking) and low VCE(sat) support linear regulation, but thermal design must account for worst-case (VIN−VOUT) × ILOAD power dissipation. Derating to 1.2W is required on minimal pad layouts per Note 9.
FZT1053AQTA 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):
- 4.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 75 V
- Vce Saturation (Max) @ Ib, Ic:
- 440mV @ 200mA, 4.5A
- Current - Collector Cutoff (Max):
- 10nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 1A, 2V
- Power - Max:
- 1.2 W
- Frequency - Transition:
- 140MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
FZT1053AQTA FAQ
1.How can I place an order for FZT1053AQTA through Aetrix?
Please submit a Request for Quotation (RFQ) for FZT1053AQTA 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 FZT1053AQTA reliable?
The price and inventory of FZT1053AQTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT1053AQTA is usually 5 days.
3.What payment methods are accepted for FZT1053AQTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT1053AQTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZT1053AQTA?
FZT1053AQTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZT1053AQTA 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 FZT1053AQTA?
For technical support, including FZT1053AQTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT1053AQTA requirements.
6.How does Aetrix verify that FZT1053AQTA is sourced from the original manufacturer or authorized distributors?
All FZT1053AQTA 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 FZT1053AQTA meets industry standards.
7.What is the process for return or replacement of FZT1053AQTA?
All FZT1053AQTA units undergo pre-shipment inspection (PSI). If there is an issue with FZT1053AQTA, 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 FZT1053AQTA part is unused and in its original packaging.
Return procedure for FZT1053AQTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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