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Diodes Incorporated ADTA143XUAQ-7
- Part No.:
- ADTA143XUAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADTA143XUAQ-7.pdf
- Description:
- TRANS PREBIAS PNP 0.1A SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,957
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Product details
Overview
ADTA143XUAQ from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT323 package, featuring integrated 4.7 kΩ and 10 kΩ bias resistors, −100 mA continuous collector current rating, −50 V VCEO, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the ADTA143XUAQ datasheet, ADTA143XUAQ pinout, ADTA143XUAQ application, or ADTA143XUAQ equivalent, key selection criteria include input voltage thresholds (VIN(ON) ≤ −2.5 V), output saturation voltage (VCE(SAT) ≤ −0.3 V at −10 mA), DC current gain (hFE ≥ 30), thermal resistance (RθJA = 375 °C/W), and RoHS-compliant green packaging.
Technical Context
This device integrates two precision bias resistors (R1 = 4.7 kΩ, R2 = 10 kΩ) to enable direct digital logic interface without external components. It operates as a single-stage PNP switch with guaranteed turn-on at VIN ≤ −2.5 V and turn-off at VIN ≥ −0.3 V under specified load conditions.
Designed for automotive-grade reliability, it supports operation from −55 °C to +150 °C, delivers fT = 250 MHz at VCE = −10 V / IE = −5 mA, and maintains stable DC current gain (GI ≥ 30) across its rated output current range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Maximum allowable collector-emitter voltage before breakdown; defines safe operating range in high-side switching. |
| IC(max) | −100 mA - Continuous collector current limit; sets maximum load drive capability in active switching mode. |
| VCE(SAT) | −0.1 to −0.3 V @ −10 mA - Low saturation voltage ensures minimal power loss and heat generation during ON-state conduction. |
| hFE | ≥30 @ −5 V, −10 mA - Minimum DC current gain determines required base drive current for full saturation. |
| R1/R2 | 4.7 kΩ / 10 kΩ ±30% - Integrated bias network eliminates external resistor placement and reduces PCB footprint. |
| PD | 330 mW @ TA = 25 °C - Power dissipation limit on FR-4 board; governs thermal derating above ambient temperature. |
| fT | 250 MHz - Gain-bandwidth product indicates usable frequency range for small-signal amplification or fast switching. |
Pinout & Package
SOT323 surface-mount plastic package: 3-terminal, lead-free, halogen-free, moisture sensitivity level 1, UL 94V-0 rated molding compound, 0.006 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter connection | Common reference node for PNP configuration; connects to higher potential rail in high-side switch topology. |
| 2 (Base) | Input control terminal | Accepts logic-level input through internal R1/R2 divider; enables direct TTL/CMOS interface without external biasing. |
| 3 (Collector) | Output current path | Delivers switched load current to ground; polarity and current direction defined by PNP architecture. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias resistors | 4.7 kΩ (R1) and 10 kΩ (R2) reduce component count and improve layout reproducibility in digital interface circuits. |
| AEC-Q101 qualification | Validated for automotive applications including body control modules and lighting drivers requiring extended temperature and reliability compliance. |
| Green RoHS compliance | Halogen- and antimony-free construction (<900 ppm Br/Cl, <1000 ppm Sb) meets global environmental regulations and end-of-life requirements. |
| Low VCE(SAT) | −0.1 V typical at −10 mA enables efficient switching with <1 mW conduction loss per switch event. |
Applications
| Automotive LED Lighting Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving low-current indicator LEDs in dashboard clusters and exterior status lights. IC Role / Device Role / Timing Role: High-side PNP switch controlled by microcontroller GPIO pins. Use Value: Eliminates need for discrete base resistors and improves board space efficiency while meeting AEC-Q101 reliability targets. | Use Scenario: Level-shifting and signal conditioning between 3.3 V sensor outputs and 5 V/12 V actuator inputs. IC Role / Device Role / Timing Role: Digital logic buffer with built-in pull-up and current limiting. Use Value: Provides robust noise immunity and consistent switching thresholds across industrial temperature ranges (−40 °C to +125 °C). |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Monitoring |
Use Scenario: Enabling/disabling auxiliary power rails during startup and shutdown sequences in smart home appliances. IC Role / Device Role / Timing Role: Controlled load switch with predictable turn-on delay and low quiescent current. Use Value: Ensures deterministic power sequencing without external timing components or complex gate drivers. | Use Scenario: Isolating fault signals from analog front-end sensors in portable diagnostic tools. IC Role / Device Role / Timing Role: Fault flag translator converting open-collector alerts into clean logic-compatible outputs. Use Value: Maintains signal integrity under ESD stress (IEC 61000-4-2 compliant design) and supports long-term calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSV143XUAXT1G | Same SOT323 package, identical R1/R2 values (4.7k/10k), but rated only to 125 °C junction temperature (vs. 150 °C). | Not AEC-Q101 qualified; suitable for commercial/industrial use only, not automotive. | Select when AEC-Q101 compliance is unnecessary and cost optimization is prioritized over extended temperature margin. |
| DXTA143XUQ-7 | Identical electrical specs and AEC-Q101 qualification, but uses SOT363 package (dual-channel version with shared emitter). | Offers dual-device integration in same footprint; requires redesign for single-channel use cases. | Choose when board space allows dual functionality or future scalability to multi-channel control is planned. |
Compared with NSV143XUAXT1G and DXTA143XUQ-7, ADTA143XUAQ uniquely combines AEC-Q101 qualification, 150 °C max junction temperature, and single-channel SOT323 packaging-making it optimal for space-constrained automotive subsystems requiring highest reliability assurance.
Availability
ADTA143XUAQ is available at Aetrix Electronics and suitable for automotive LED control, industrial sensor interfacing, and consumer appliance power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for ADTA143XUAQ 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 North America.
This part belongs to Diodes' Automotive-Grade Pre-Biased Transistor (PBT) product line, engineered specifically for simplified digital interface design in harsh-environment applications where reliability, compactness, and regulatory compliance are critical.
FAQ
What is the maximum operating temperature for ADTA143XUAQ?
The ADTA143XUAQ is rated for junction temperatures from −55 °C to +150 °C, with storage temperature matching this range. Its thermal resistance is 375 °C/W on a minimum-copper FR-4 board, enabling reliable operation in under-hood automotive environments when properly heatsinked or derated.
Does ADTA143XUAQ require external bias resistors?
No. ADTA143XUAQ integrates R1 = 4.7 kΩ and R2 = 10 kΩ internally, allowing direct connection to standard logic outputs (e.g., 3.3 V or 5 V MCU GPIO). This eliminates external bias components and reduces PCB area and assembly cost.
Is ADTA143XUAQ compatible with lead-free reflow processes?
Yes. The device uses matte tin-plated leads and is fully RoHS-compliant with no intentionally added lead. It meets J-STD-020 moisture sensitivity level 1 and is qualified for standard Pb-free reflow profiles up to 260 °C peak temperature.
How does the input voltage threshold ensure reliable switching?
VIN(ON) ≤ −2.5 V guarantees turn-on and VIN(OFF) ≥ −0.3 V guarantees turn-off under specified test conditions. These thresholds provide >2.2 V noise margin against common-mode interference in automotive and industrial wiring harnesses.
ADTA143XUAQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- 4.7 kOhms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 330 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
ADTA143XUAQ-7 FAQ
1.How can I place an order for ADTA143XUAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTA143XUAQ-7 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 ADTA143XUAQ-7 reliable?
The price and inventory of ADTA143XUAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTA143XUAQ-7 is usually 5 days.
3.What payment methods are accepted for ADTA143XUAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTA143XUAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTA143XUAQ-7?
ADTA143XUAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTA143XUAQ-7 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 ADTA143XUAQ-7?
For technical support, including ADTA143XUAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTA143XUAQ-7 requirements.
6.How does Aetrix verify that ADTA143XUAQ-7 is sourced from the original manufacturer or authorized distributors?
All ADTA143XUAQ-7 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 ADTA143XUAQ-7 meets industry standards.
7.What is the process for return or replacement of ADTA143XUAQ-7?
All ADTA143XUAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with ADTA143XUAQ-7, 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 ADTA143XUAQ-7 part is unused and in its original packaging.
Return procedure for ADTA143XUAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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