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Diodes Incorporated ADTA143ZUAQ-7
- Part No.:
- ADTA143ZUAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADTA143ZUAQ-7.pdf
- Description:
- TRANS PREBIAS PNP 0.1A SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
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Product details
Overview
ADTA143ZUAQ from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT323 package, featuring integrated 4.7 kΩ and 47 kΩ bias resistors, AEC-Q101 qualification, -50 V VCC, -100 mA IC(max), and -0.3 V VO(ON) at -5 mA output current - used for automotive load switching and signal-level logic interface.
For engineers reviewing the ADTA143ZUAQ datasheet, ADTA143ZUAQ pinout, ADTA143ZUAQ application, or ADTA143ZUAQ equivalent, key selection criteria include guaranteed ON/OFF thresholds (-1.3 V VI(ON), -0.5 V VI(OFF)), DC current gain (GI ≥ 80), thermal resistance (RθJA = 375 °C/W), and automotive-grade reliability under -55 °C to +150 °C operation.
Technical Context
This PNP pre-biased transistor integrates two precision resistors (R1 = 4.7 kΩ, R2 = 47 kΩ) to eliminate external base bias components, enabling direct TTL/CMOS-compatible digital input control. Its internal resistor tolerance (±30% for R1, ±20% for R2/R1 ratio) ensures predictable turn-on behavior across temperature.
The device operates with guaranteed switching thresholds: VI(ON) ≤ -1.3 V ensures reliable conduction at standard logic-low levels, while VI(OFF) ≥ -0.5 V prevents false triggering under noise or floating inputs - critical for automotive body control modules and sensor interface circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC (Max) | -50 V - supports high-side switching in 12 V/24 V automotive systems with margin against load dump transients |
| IC(max) | -100 mA - suitable for driving LEDs, relays, or small solenoids without external amplification |
| VO(ON) | -0.1 to -0.3 V @ -5 mA - low saturation voltage minimizes power loss and self-heating in continuous-duty applications |
| GI (Min) | 80 @ -5 V VCE, -10 mA IC - ensures stable current amplification for consistent load control |
| RθJA | 375 °C/W on FR-4 board - defines maximum allowable ambient temperature rise at 330 mW power dissipation |
| fT | 250 MHz - enables use in low-frequency switching (≤100 kHz) with fast edge response and minimal delay |
Pinout & Package
Package: SOT323 - ultra-small surface-mount plastic package (2.15 mm × 2.10 mm × 0.95 mm), moisture sensitivity level 1, matte tin-plated leads, 0.006 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input terminal connected to R1–R2 node | Accepts logic-level control voltage; internal resistor divider sets bias point for guaranteed ON/OFF switching |
| 2 (Emitter) | PNP emitter connection | Connected to supply rail (e.g., +12 V); current flows from emitter to collector when active |
| 3 (Collector) | Output terminal | Sinks load current to ground; low VCE(sat) enables efficient switching of indicator LEDs or small actuators |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and cabin environments per stress test requirements (HTOL, TC, HAST, etc.) |
| Integrated R1/R2 bias network | Eliminates two external resistors, reducing BOM count and PCB area in space-constrained ECUs |
| Guaranteed VI(ON)/VI(OFF) | Ensures robust digital interface compatibility with microcontrollers and ASICs across temperature and voltage variation |
| Green, halogen-free construction | Meets automotive OEM environmental mandates (<900 ppm Br/Cl, <1000 ppm Sb) and RoHS 3 compliance |
Applications
| Automotive Door Module | LED Status Indicator |
|---|---|
Use Scenario: Controlling window lock/unlock solenoids and mirror adjustment motors via MCU GPIO pins. IC Role / Device Role / Timing Role: PNP pre-biased switch providing high-side drive with logic-level input compatibility. Use Value: Eliminates need for discrete base resistors and level-shifting circuitry, reducing component count by 2 and layout area by >1.5 mm² per channel. | Use Scenario: Driving multiple status LEDs in instrument clusters or center consoles with varying forward voltages. IC Role / Device Role / Timing Role: Low-saturation-voltage current sink for constant-current LED biasing. Use Value: VO(ON) ≤ -0.3 V ensures >95% efficiency at 20 mA, minimizing thermal drift and color shift over temperature. |
| Body Control Unit (BCU) | Smart Sensor Interface |
Use Scenario: Enabling/disabling 5 V sensor power rails based on CAN bus wake-up commands. IC Role / Device Role / Timing Role: High-side load switch with fast turn-off (tOFF < 1 μs typical) for power sequencing. Use Value: Guaranteed VI(OFF) ≥ -0.5 V prevents leakage-induced false wake-up during sleep mode, extending battery life. | Use Scenario: Isolating analog sensor outputs (e.g., thermistors, potentiometers) from noisy digital domains. IC Role / Device Role / Timing Role: Signal-level analog switch with low leakage (IO(OFF) ≤ -0.5 μA) and minimal capacitance (COBO ≈ 2.5 pF). Use Value: Enables accurate 12-bit ADC readings by limiting crosstalk and offset error from adjacent digital traces. |
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 |
|---|---|---|---|
| NSV143ZMXV6T1G | R1 = 4.7 kΩ, R2 = 47 kΩ; same SOT-323 package; fT = 200 MHz (vs. 250 MHz); GI min = 68 | Lower DC gain reduces margin in high-temperature BCU designs where IC stability is critical | Select if cost sensitivity outweighs gain margin requirement and fT headroom is acceptable |
| DXTA143JCA-7 | Same R1/R2 values; SOT-363 (SC-70-6) package; dual-channel configuration; higher RθJA = 420 °C/W | Enables dual-load control in same footprint but requires derating to 280 mW max power per channel | Choose for space-constrained dual-switch applications where shared bias network simplifies routing |
Compared with NSV143ZMXV6T1G and DXTA143JCA-7, ADTA143ZUAQ delivers superior DC current gain (GI ≥ 80 vs. 68), higher fT, and lower thermal resistance - making it optimal for single-channel, high-reliability automotive switching where gain stability and thermal performance are prioritized.
Availability
ADTA143ZUAQ is available at Aetrix Electronics and suitable for automotive door modules, LED status indicators, body control units, and smart sensor interfaces requiring stable component supply and AEC-Q101-compliant sourcing.
Supply support for ADTA143ZUAQ 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.
This part belongs to Diodes' Automotive-Grade Pre-Biased Transistor (PBT) product line, engineered specifically for simplified, robust digital-to-analog interface in vehicle subsystems operating across extended temperature and vibration profiles.
FAQ
What is the guaranteed input voltage threshold for turning ADTA143ZUAQ ON?
The ADTA143ZUAQ guarantees turn-on when input voltage (VI) is ≤ -1.3 V at VO = -0.3 V and IO = -5 mA. This threshold remains valid across -55 °C to +150 °C ambient temperature and is verified per AEC-Q101 stress testing, ensuring reliable activation from standard automotive microcontroller GPIOs.
Can ADTA143ZUAQ be used in high-side switching configurations?
Yes - ADTA143ZUAQ is a PNP transistor with emitter connected to the positive supply rail, enabling true high-side switching. Its -50 V VCC rating and -100 mA IC capability support 12 V and 24 V automotive systems; the integrated bias network eliminates external pull-up resistors required in discrete PNP implementations.
How does the built-in resistor tolerance affect circuit design?
R1 tolerance is ±30%, and R2/R1 ratio tolerance is ±20%. These tolerances are factored into the guaranteed VI(ON) and VI(OFF) specifications, so no additional design margin is needed for resistor variation. However, designers should verify worst-case gain (GI = 80 min) at maximum junction temperature when sizing loads.
Is ADTA143ZUAQ compatible with lead-free reflow processes?
Yes - ADTA143ZUAQ uses matte tin-plated leads rated for solderability per MIL-STD-202, Method 208, and is qualified for standard Pb-free reflow profiles (peak temperature up to 260 °C). Its moisture sensitivity level is 1 per J-STD-020, eliminating bake requirements prior to assembly.
ADTA143ZUAQ-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):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 5mA
- 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
ADTA143ZUAQ-7 FAQ
1.How can I place an order for ADTA143ZUAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTA143ZUAQ-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 ADTA143ZUAQ-7 reliable?
The price and inventory of ADTA143ZUAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTA143ZUAQ-7 is usually 5 days.
3.What payment methods are accepted for ADTA143ZUAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTA143ZUAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTA143ZUAQ-7?
ADTA143ZUAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTA143ZUAQ-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 ADTA143ZUAQ-7?
For technical support, including ADTA143ZUAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTA143ZUAQ-7 requirements.
6.How does Aetrix verify that ADTA143ZUAQ-7 is sourced from the original manufacturer or authorized distributors?
All ADTA143ZUAQ-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 ADTA143ZUAQ-7 meets industry standards.
7.What is the process for return or replacement of ADTA143ZUAQ-7?
All ADTA143ZUAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with ADTA143ZUAQ-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 ADTA143ZUAQ-7 part is unused and in its original packaging.
Return procedure for ADTA143ZUAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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