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Diodes Incorporated ADTA144ECAQ-7
- Part No.:
- ADTA144ECAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADTA144ECAQ-7.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,056
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Product details
Overview
ADTA144ECAQ-7 from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT23 package, featuring integrated 47 kΩ base bias resistors (R1 = R2), AEC-Q101 qualification for automotive use, −50 V VCC, −100 mA IC(max), and 250 MHz fT. It functions as a digital switch or level translator in low-power control circuits.
For engineers reviewing the ADTA144ECAQ-7 datasheet, ADTA144ECAQ-7 pinout, ADTA144ECAQ-7 application, or ADTA144ECAQ-7 equivalent, key selection criteria include its built-in resistor ratio tolerance (±20%), guaranteed VI(OFF) ≤ −1.1 V at −5 V supply, −0.3 V VO(ON) at −10 mA load, and thermal resistance of 403 °C/W on FR-4 board.
Technical Context
This device integrates matched 47 kΩ base-emitter and base-collector resistors to simplify PCB layout and ensure consistent switching thresholds. Its PNP topology enables high-side switching with logic-level input compatibility down to −1.9 V VI(ON).
Designed for automotive-grade reliability, it operates across −55 °C to +150 °C and delivers DC current gain (hFE) ≥ 68 at −5 mA collector current. The SOT23 package supports surface-mount assembly with moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Max | −50 V: Absolute maximum supply voltage rating defines safe operating range for high-side rail applications. |
| IC(max) | −100 mA: Maximum continuous collector current determines drive capability for LED indicators or relay coils. |
| fT | 250 MHz: Gain-bandwidth product confirms suitability for low-speed digital switching (≤10 MHz) with stable edge response. |
| R1 = R2 | 47 kΩ ±30%: Matched internal bias resistors eliminate external components and reduce BOM count in inverter/switch designs. |
| VO(ON) | −0.3 V max at −10 mA: Low saturation voltage ensures minimal power loss and reliable logic-low output under load. |
| hFE | ≥68 at −5 mA: Minimum DC current gain guarantees predictable turn-on behavior without marginal biasing. |
Pinout & Package
SOT23 plastic surface-mount package with matte tin-plated leads, UL 94V-0 flammability rating, and 0.008 g weight. Moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Connected to higher potential rail in PNP high-side switch configuration; referenced to ground in inverter mode. |
| 2 (Base) | Input node with internal R1/R2 divider | Accepts logic-level input; internal resistors set threshold and limit base current automatically. |
| 3 (Collector) | Output node | Drives load to ground when active; open-circuit when off; compatible with 3.3 V/5 V CMOS/TTL inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Matched 47 kΩ R1/R2 resistors eliminate external components and ensure consistent VI(ON)/VI(OFF) thresholds. |
| AEC-Q101 qualification | Validated for automotive powertrain, body electronics, and infotainment systems requiring extended temperature and reliability compliance. |
| Green construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets global environmental directives. |
| Thermal performance | 403 °C/W RθJA on minimum-copper FR-4 enables operation up to +125 °C ambient without derating in compact layouts. |
Applications
| Automotive Door Module Control | Industrial PLC Input Conditioning |
|---|---|
Use Scenario: Driving window lift motor enable signals and mirror fold/unfold relays in door control units. IC Role / Device Role / Timing Role: PNP high-side switch translating microcontroller GPIO outputs to 12 V loads. Use Value: Eliminates discrete resistor networks, reduces PCB area by >30%, and ensures AEC-Q101-compliant switching at −40 °C to +125 °C. | Use Scenario: Converting 24 V industrial field sensor outputs to 3.3 V logic levels for FPGA or MCU inputs. IC Role / Device Role / Timing Role: Level-shifting inverter with defined VI(OFF) ≤ −1.1 V and VI(ON) ≥ −1.9 V. Use Value: Provides noise-immune input hysteresis via internal resistor ratio, reducing susceptibility to EMI in factory-floor environments. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Status Indication |
Use Scenario: Enabling auxiliary power rails in smart washing machine control boards during startup sequence. IC Role / Device Role / Timing Role: Low-power enable switch controlling LDO inputs with precise turn-on timing. Use Value: Delivers −0.3 V VO(ON) at −10 mA to minimize voltage drop and maintain tight regulation on downstream regulators. | Use Scenario: Driving status LEDs on patient monitor front panels where space and reliability are critical. IC Role / Device Role / Timing Role: Constant-current sink for indicator LEDs with built-in current limiting via R1/R2. Use Value: Ensures consistent LED brightness across temperature (−40 °C to +85 °C) without external current-setting resistors. |
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 |
|---|---|---|---|
| NSV144EHT1G | Same SOT23 package, identical R1=R2=47 kΩ, but rated only to +125 °C TJ (vs. +150 °C). | Lacks AEC-Q101 qualification; not approved for automotive safety-critical modules. | Select for cost-sensitive industrial controls where extended temperature is not required. |
| DXTA144ECA-7 | Same electrical specs and AEC-Q101 rating, but uses standard (non-green) molding compound. | Not halogen-free; may not meet RoHS-compliant medical or consumer product certifications. | Choose when green material compliance is not mandated by end-product regulatory requirements. |
Compared with NSV144EHT1G and DXTA144ECA-7, ADTA144ECAQ-7 uniquely combines AEC-Q101 qualification, full halogen/antimony-free construction, and +150 °C junction rating-making it the only option qualified for under-hood automotive and Class II medical applications requiring both reliability and environmental compliance.
Availability
ADTA144ECAQ-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for ADTA144ECAQ-7 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 worldwide.
The ADTA144ECAQ-7 belongs to Diodes' Automotive-Grade Pre-Biased Transistor (PBT) product line, engineered specifically for simplified, reliable switching in harsh-environment control nodes where space, thermal margin, and qualification rigor are critical.
FAQ
What is the function of Pin 2 (Base) in ADTA144ECAQ-7?
Pin 2 is the input terminal connected internally to two 47 kΩ resistors-one tied to emitter (Pin 1), one to collector (Pin 3). It accepts logic-level signals and automatically biases the PNP transistor without external components, enabling direct interface with MCU GPIOs or TTL outputs.
Can ADTA144ECAQ-7 replace a standard PNP BJT like BC807 in existing designs?
Yes, but only if the circuit relies on external base resistors. ADTA144ECAQ-7 integrates those resistors, so removing them is mandatory. Also verify that the −1.9 V VI(ON) threshold and −0.3 V VO(ON) saturation voltage meet system logic-level compatibility requirements before substitution.
Is ADTA144ECAQ-7 suitable for linear amplification applications?
No. It is optimized for digital switching, not analog amplification. Its hFE variation over current and temperature, lack of specified linearity parameters, and fixed bias network make it unsuitable for amplifier configurations requiring gain stability or low distortion.
Does ADTA144ECAQ-7 require special PCB layout considerations?
Yes. Use the recommended SOT23 pad layout from Diodes' package outline document (DS38877, page 6), including thermal relief for Pin 3 (collector) and adequate copper pour for heat dissipation. Avoid excessive trace length on Pin 2 to prevent noise coupling into the sensitive bias node.
ADTA144ECAQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- 310 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADTA144ECAQ-7 FAQ
1.How can I place an order for ADTA144ECAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTA144ECAQ-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 ADTA144ECAQ-7 reliable?
The price and inventory of ADTA144ECAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTA144ECAQ-7 is usually 5 days.
3.What payment methods are accepted for ADTA144ECAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTA144ECAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTA144ECAQ-7?
ADTA144ECAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTA144ECAQ-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 ADTA144ECAQ-7?
For technical support, including ADTA144ECAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTA144ECAQ-7 requirements.
6.How does Aetrix verify that ADTA144ECAQ-7 is sourced from the original manufacturer or authorized distributors?
All ADTA144ECAQ-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 ADTA144ECAQ-7 meets industry standards.
7.What is the process for return or replacement of ADTA144ECAQ-7?
All ADTA144ECAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with ADTA144ECAQ-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 ADTA144ECAQ-7 part is unused and in its original packaging.
Return procedure for ADTA144ECAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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