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Diodes Incorporated ADTA144WCAQ-7
- Part No.:
- ADTA144WCAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADTA144WCAQ-7.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,491
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Product details
Overview
ADTA144WCAQ from Diodes Incorporated is a PNP pre-biased small-signal surface-mount transistor in SOT23 package, featuring integrated 47 kΩ and 22 kΩ bias resistors, AEC-Q101 qualification for automotive use, −50 V VCC, −100 mA IC(max), and 250 MHz fT. It functions as an automotive-grade logic-level inverter or digital switch in low-power control circuits.
For engineers reviewing the ADTA144WCAQ datasheet, ADTA144WCAQ pinout, ADTA144WCAQ application, or ADTA144WCAQ equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, confirmed AEC-Q101 compliance status, and real-world automotive and industrial switching use cases - all derived from Diodes' official DS42500 Rev. 2-2 datasheet.
Technical Context
This device integrates two precision bias resistors (R1 = 47 kΩ, R2 = 22 kΩ) directly into a PNP epitaxial planar transistor die, eliminating external base-resistor components in digital switching applications. Its guaranteed VI(OFF) ≤ −0.8 V and VI(ON) ≥ −4.0 V enable reliable TTL/CMOS-compatible level translation with defined turn-on/turn-off thresholds.
Designed for high-reliability automotive environments, it operates across −55 °C to +150 °C, supports PPAP documentation, and is manufactured in IATF 16949-certified facilities. Thermal resistance RθJA is 403 °C/W on minimum-copper FR-4, with 310 mW maximum power dissipation at TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Max | −50 V: Supports robust operation in 12 V/24 V automotive supply rails with margin against load-dump transients. |
| IC(max) | −100 mA: Enables direct drive of small relays, LEDs, or logic inputs without external current amplification. |
| fT | 250 MHz: Ensures fast switching (<100 ns typical propagation delay) for digital control signals up to ~10 MHz. |
| VI(ON) | ≤ −4.0 V: Guarantees reliable turn-on with standard 5 V CMOS/TTL logic high (inverted input configuration). |
| VO(ON) | −0.1 to −0.3 V @ −10 mA: Delivers low saturation voltage for minimal power loss and clean logic-low output. |
| R1 / R2 | 47 kΩ / 22 kΩ: Fixed resistor ratio enables predictable DC current gain (GI = 56 min) and stable biasing. |
Pinout & Package
Package: SOT23 - surface-mount plastic package, 0.008 g weight, UL 94V-0 rated, moisture sensitivity level 1 per J-STD-020, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Input reference node | Connected to system ground (0 V) in inverter configuration; defines common return path for input current IL. |
| 2 (Base) | Bias resistor junction | Internal connection point between R1 (47 kΩ) and R2 (22 kΩ); accepts logic-level input signal. |
| 3 (Collector) | Switched output node | Provides inverted, current-sinking output; connects to load (e.g., LED cathode or MCU input pull-up). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Eliminates two external resistors, reducing BOM count and PCB footprint in digital interface circuits. |
| AEC-Q101 qualification | Validated for automotive under-hood and body-control modules requiring zero-defect reliability and PPAP support. |
| Green construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb), compliant with RoHS 3 (2015/863/EU). |
| Guaranteed switching thresholds | VI(OFF) ≤ −0.8 V and VI(ON) ≥ −4.0 V ensure deterministic logic state transitions across temperature and process variation. |
Applications
| Automotive Body Control Module | Industrial PLC Input Interface |
|---|---|
Use Scenario: Level-shifting and inverting 5 V microcontroller outputs to drive 12 V relay coils in door lock or lighting control units. IC Role / Device Role / Timing Role: Digital switch with built-in biasing, providing galvanically isolated logic inversion without external resistors. Use Value: Reduces component count by two resistors per channel and meets AEC-Q101 stress test requirements for 15-year vehicle service life. |
Use Scenario: Converting 24 V industrial sensor signals to 3.3 V/5 V logic levels for PLC digital input cards. IC Role / Device Role / Timing Role: High-voltage tolerant input buffer with defined turn-on threshold and low saturation voltage. Use Value: Enables direct interfacing of field-side 24 V sensors while maintaining noise immunity and meeting IEC 61000-4-4 surge immunity design margins. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Logic Interface |
Use Scenario: Driving small brushed DC fan motors in smart HVAC systems using PWM-controlled base input. IC Role / Device Role / Timing Role: Low-power, thermally efficient PNP switch optimized for intermittent duty-cycle loads. Use Value: Delivers 100 mA peak current with <0.3 V VCE(SAT), minimizing self-heating during continuous PWM operation at 25 kHz. |
Use Scenario: Isolating and inverting critical safety interlock signals between FPGA-based control logic and high-voltage subsystems. IC Role / Device Role / Timing Role: Fail-safe digital inverter with guaranteed off-state leakage (<0.5 µA) and wide operating temperature range. Use Value: Supports functional safety requirements (IEC 62304 Class C) via documented AEC-Q101 qualification and traceable manufacturing in IATF 16949 facilities. |
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 |
|---|---|---|---|
| DTC144WCAQ | Same SOT23 package and R1/R2 values, but not AEC-Q101 qualified; lower thermal rating (250 mW PD). | Restricted to commercial/industrial use only; unsuitable for automotive PPAP or extended temperature operation. | Select when cost sensitivity outweighs automotive qualification and full −55 °C to +150 °C range is unnecessary. |
| NSV144WCAQ | Identical electrical specs and AEC-Q101 qualification, but manufactured in different IATF 16949 facility with alternate traceability chain. | Drop-in replacement for supply continuity; identical performance in safety-critical automotive designs. | Choose for dual-sourcing strategy where second-source validation and long-term lifecycle assurance are required. |
Compared with DTC144WCAQ and NSV144WCAQ, the ADTA144WCAQ uniquely combines full AEC-Q101 qualification, 310 mW power rating, and Diodes' certified PPAP capability - making it the only option qualified for Tier-1 automotive body electronics requiring both functional safety alignment and production traceability.
Availability
ADTA144WCAQ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input interfaces, and medical diagnostic equipment requiring stable component supply, AEC-Q101 compliance, and long-term manufacturing continuity.
Supply support for ADTA144WCAQ 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 since 1959.
The ADTA144WCAQ belongs to Diodes' Automotive-Grade Pre-Biased Transistor (PBT) product line, engineered specifically for simplified digital interface design in harsh-environment electronic control units.
FAQ
What is the maximum allowable collector-emitter voltage for ADTA144WCAQ?
The absolute maximum VCE is −50 V, specified as supply voltage between Pin 3 (collector) and Pin 2 (base) in the datasheet. This rating applies under continuous DC conditions at TA = 25 °C and ensures safe operation in 24 V automotive systems with transient overvoltage protection margins.
Does ADTA144WCAQ require external bias resistors?
No - it integrates 47 kΩ (R1) and 22 kΩ (R2) bias resistors internally, forming a complete pre-biased PNP switch. External resistors are unnecessary for standard inverter or digital switch configurations, reducing PCB area and assembly steps.
Is ADTA144WCAQ compatible with lead-free reflow soldering processes?
Yes - it is fully RoHS 3 compliant, uses matte tin-plated leads, and is rated for solderability per MIL-STD-202, Method 208. The package supports standard Pb-free reflow profiles with peak temperatures up to 260 °C and meets J-STD-020 moisture sensitivity level 1.
How does the gain-bandwidth product affect switching performance?
With fT = 250 MHz, the ADTA144WCAQ achieves sub-100 ns turn-on/turn-off times under typical load conditions. This enables reliable operation in digital control signals up to 10 MHz, supporting fast PWM motor control and high-speed logic interfacing without added gate drivers.
ADTA144WCAQ-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):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 56 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 310 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADTA144WCAQ-7 FAQ
1.How can I place an order for ADTA144WCAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTA144WCAQ-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 ADTA144WCAQ-7 reliable?
The price and inventory of ADTA144WCAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTA144WCAQ-7 is usually 5 days.
3.What payment methods are accepted for ADTA144WCAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTA144WCAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTA144WCAQ-7?
ADTA144WCAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTA144WCAQ-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 ADTA144WCAQ-7?
For technical support, including ADTA144WCAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTA144WCAQ-7 requirements.
6.How does Aetrix verify that ADTA144WCAQ-7 is sourced from the original manufacturer or authorized distributors?
All ADTA144WCAQ-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 ADTA144WCAQ-7 meets industry standards.
7.What is the process for return or replacement of ADTA144WCAQ-7?
All ADTA144WCAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with ADTA144WCAQ-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 ADTA144WCAQ-7 part is unused and in its original packaging.
Return procedure for ADTA144WCAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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