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Diodes Incorporated ADTA144EUAQ-7
- Part No.:
- ADTA144EUAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADTA144EUAQ-7.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,321
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Product details
Overview
ADTA144EUAQ from Diodes Incorporated is a PNP pre-biased transistor in SOT323 package, featuring integrated 47kΩ base-emitter and base-collector bias resistors. It delivers -100mA maximum collector current, -50V VCEO, and 250MHz transition frequency, and is AEC-Q101 qualified for automotive signal switching applications including body control modules and LED driver interfaces.
For engineers reviewing the ADTA144EUAQ datasheet, ADTA144EUAQ pinout, ADTA144EUAQ application, or ADTA144EUAQ equivalent, key selection criteria include guaranteed turn-on/off voltage thresholds (-3.0V / -0.5V), low saturation voltage (-0.3V at -10mA), ±30% R1 tolerance, and IATF 16949-certified manufacturing traceability.
Technical Context
This device integrates two precision-matched 47kΩ biasing resistors (R1 = R2) to eliminate external base drive components in digital switching circuits. Its PNP topology enables high-side load control with logic-level compatible input thresholds and rail-to-rail output swing capability under -5V supply conditions.
The SOT323 package supports automated placement and provides 375°C/W junction-to-ambient thermal resistance on FR4 PCBs. Electrical behavior is characterized across -55°C to +150°C, meeting automotive ambient operating requirements without derating up to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -50V - Supports high-side switching in 24V automotive systems with margin against transients |
| IC(max) | -100mA - Drives small solenoids, relays, or LED strings directly without external amplification |
| VCE(sat) | -0.3V @ -10mA - Minimizes power loss and heat generation in always-on control paths |
| fT | 250MHz - Enables fast edge response for PWM dimming and digital signal routing |
| R1, R2 | 47kΩ ±30% - Reduces BOM count and layout area while maintaining predictable DC bias stability |
| VIN(on) | -3.0V max - Ensures reliable activation from standard 3.3V/5V microcontroller GPIO outputs |
| PD | 330mW - Allows continuous operation at full rated current on standard PCB land patterns |
Pinout & Package
Package: SOT323 - ultra-small surface-mount plastic case (2.15mm × 2.10mm × 0.95mm), halogen-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current source terminal | Connected to positive rail in high-side switch configuration; anchors bias network reference |
| 2 (Base) | Control input node | Internal connection point of R1 (to emitter) and R2 (to collector); accepts logic-level signals |
| 3 (Collector) | Switched output terminal | Drives load to ground; configured as open-collector output with internal pull-up via R2 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use with PPAP documentation and IATF 16949 production control |
| Integrated bias resistors | Eliminates two external 47kΩ resistors, reducing PCB area by ≥2.5mm² and assembly steps |
| Guaranteed VIN(off) | -0.5V threshold ensures noise immunity in electrically noisy vehicle cabins |
| Green compound packaging | UL 94V-0 rated, <900ppm Br/Cl, <1000ppm Sb - meets global environmental compliance mandates |
| SOT323 footprint | Compatible with high-density automotive ECUs and enables 0.65mm pitch reflow assembly |
Applications
| Automotive Body Control Module | LED Tail Light Driver |
|---|---|
Use Scenario: Switching 12V loads such as door lock actuators and window lift motors in centralized BCM units. IC Role / Device Role / Timing Role: High-side PNP switch controlled by 3.3V MCU GPIO with built-in bias network. Use Value: Eliminates discrete resistor network, reduces component count by two per channel, and ensures robust turn-off during battery brownout events down to -0.5V input. | Use Scenario: Driving segmented red LED arrays in rear combination lamps with PWM dimming. IC Role / Device Role / Timing Role: Constant-current sink switch enabling precise brightness control at 250MHz fT. Use Value: Delivers <0.3V saturation drop at 20mA, minimizing thermal rise in confined lamp housings and supporting 1kHz+ PWM frequencies without distortion. |
| Engine Bay Sensor Interface | Infotainment Power Sequencing |
Use Scenario: Level-shifting and isolation of analog sensor signals (e.g., coolant temp, oil pressure) before ADC sampling. IC Role / Device Role / Timing Role: Signal conditioning switch providing galvanic separation between 5V sensor domain and 3.3V microcontroller domain. Use Value: Maintains stable DC bias over -40°C to +125°C ambient, with ±20% R2/R1 ratio tolerance ensuring consistent gain accuracy across temperature. | Use Scenario: Controlled power-up sequencing of display backlight, audio amplifier, and USB PHY in head unit designs. IC Role / Device Role / Timing Role: Delayed enable switch triggered by system controller reset release signal. Use Value: Guarantees clean power ramp with -3.0V turn-on threshold, preventing latch-up during cold-cranking voltage dips to 6V battery levels. |
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 |
|---|---|---|---|
| NSV144EUAZT1G | Same SOT323 package, identical R1/R2 values, but rated only to +125°C TJ (vs. +150°C) | Lacks AEC-Q101 qualification and PPAP support; not approved for safety-critical automotive functions | Select when cost is primary and automotive qualification is unnecessary |
| DXTA144EUC-7 | Same electrical specs but in SOT363 (6-pin) package with dual-channel configuration | Enables dual-load control in same footprint; requires different PCB layout and routing | Select when consolidating two switching functions into one device to reduce board space |
Compared with NSV144EUAZT1G and DXTA144EUC-7, ADTA144EUAQ uniquely combines full AEC-Q101 compliance, +150°C operation, and single-channel SOT323 compactness-making it optimal for space-constrained, thermally demanding automotive modules requiring audit-ready supply chain traceability.
Availability
ADTA144EUAQ is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting subsystems, engine bay sensor interfaces, and infotainment power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADTA144EUAQ 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 consumer markets.
The ADTA144EUAQ belongs to Diodes' Automotive-Grade Pre-Biased Transistor product line, engineered specifically for simplified, robust switching in harsh-environment vehicle electronics where qualification, thermal resilience, and supply chain integrity are mandatory.
FAQ
What is the maximum allowable junction temperature for ADTA144EUAQ?
The ADTA144EUAQ has an operating junction temperature range of -55°C to +150°C, verified per AEC-Q101 stress testing. At ambient temperatures above +125°C, derating is required based on its 375°C/W thermal resistance and 330mW power dissipation limit on standard FR4 PCBs.
Does ADTA144EUAQ require external bias resistors?
No. ADTA144EUAQ integrates both base-emitter (R1) and base-collector (R2) bias resistors, each nominally 47kΩ. This eliminates the need for external resistors in standard digital switching configurations, reducing bill-of-materials count and PCB layout complexity.
Is ADTA144EUAQ compatible with lead-free reflow processes?
Yes. ADTA144EUAQ is fully RoHS-compliant, lead-free, and halogen-free. Its matte tin-plated leads meet MIL-STD-202 Method 208 solderability requirements and are qualified for standard Pb-free reflow profiles up to 260°C peak temperature.
How does the input voltage threshold ensure noise immunity in automotive environments?
ADTA144EUAQ guarantees turn-off below -0.5V (VIN(off)) and turn-on above -3.0V (VIN(on)), establishing a 2.5V hysteresis window. This prevents false triggering from typical automotive EMI noise spikes (<±2V) and battery ripple during cranking or alternator load dump events.
ADTA144EUAQ-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):
- 50 V
- Resistor - Base (R1):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- 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
ADTA144EUAQ-7 FAQ
1.How can I place an order for ADTA144EUAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTA144EUAQ-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 ADTA144EUAQ-7 reliable?
The price and inventory of ADTA144EUAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTA144EUAQ-7 is usually 5 days.
3.What payment methods are accepted for ADTA144EUAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTA144EUAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTA144EUAQ-7?
ADTA144EUAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTA144EUAQ-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 ADTA144EUAQ-7?
For technical support, including ADTA144EUAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTA144EUAQ-7 requirements.
6.How does Aetrix verify that ADTA144EUAQ-7 is sourced from the original manufacturer or authorized distributors?
All ADTA144EUAQ-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 ADTA144EUAQ-7 meets industry standards.
7.What is the process for return or replacement of ADTA144EUAQ-7?
All ADTA144EUAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with ADTA144EUAQ-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 ADTA144EUAQ-7 part is unused and in its original packaging.
Return procedure for ADTA144EUAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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