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Diodes Incorporated ADTC144ECAQ-13
- Part No.:
- ADTC144ECAQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADTC144ECAQ-13.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,648
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Product details
Overview
ADTC144ECAQ from Diodes Incorporated is an NPN pre-biased transistor in SOT23 package, featuring integrated 47 kΩ base bias resistors (R1 = R2), AEC-Q101 qualification for automotive use, 100 mA maximum collector current, and 50 V VCC rating. It functions as a digital switch in low-power logic interface circuits, such as microcontroller I/O drivers and LED load control in body electronics modules.
For engineers reviewing the ADTC144ECAQ datasheet, ADTC144ECAQ pinout, ADTC144ECAQ application, or ADTC144ECAQ equivalent, key selection criteria include guaranteed turn-on/off thresholds (VIN(on) ≤ 3 V, VIN(off) ≥ 0.5 V), DC current gain (GI ≥ 80), thermal resistance (RθJA = 403 °C/W), and AEC-Q101 compliance for automotive-grade reliability.
Technical Context
This device integrates matched 47 kΩ base-emitter and base-collector bias resistors to eliminate external components in digital switching applications. Its epitaxial planar die construction ensures stable gain and leakage performance across -55°C to +150°C operating range.
The transistor delivers 0.1–0.3 V saturation voltage at IO/IL = 10 mA/0.5 mA, supports 250 MHz fT, and maintains <0.5 μA off-state leakage at VCC = 50 V - enabling robust noise immunity and low standby power in automotive signal conditioning nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Max | 50 V - supports direct connection to 12 V/24 V automotive supply rails with margin |
| IC Max | 100 mA - drives small solenoids, relays, or multiple LEDs without external amplification |
| VIN(on) | ≤ 3 V - ensures reliable activation from 3.3 V or 5 V logic outputs |
| VIN(off) | ≤ 0.5 V - guarantees full cutoff under noisy ground-referenced conditions |
| GI | ≥ 80 - provides sufficient current gain for low-base-drive switching in space-constrained PCBs |
| R1, R2 | 47 kΩ ±30% - matched internal bias network reduces BOM count and layout area |
| RθJA | 403 °C/W - defines thermal derating on minimum-copper FR-4; max 310 mW at 25°C ambient |
Pinout & Package
Package: SOT23 - surface-mount, 3-pin plastic package with matte tin-plated leads, UL 94V-0 rated molding compound, 0.008 g weight, and moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input terminal with internal R1–R2 bias network | Accepts logic-level input; internal resistors set fixed bias point for predictable switching |
| 2 (Emitter) | Common emitter reference node | Connected to system ground; forms return path for both input and output currents |
| 3 (Collector) | Switched output terminal | Sinks up to 100 mA load current to ground when active; open-collector compatible |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including body control modules and lighting systems |
| Matched bias resistors (R1 = R2) | 47 kΩ ±30% tolerance ensures consistent turn-on threshold across production lots |
| Green compound packaging | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) meets global environmental mandates |
| Low VCE(sat) | 0.1–0.3 V at 10 mA output enables minimal power loss in high-duty-cycle switching |
| High fT | 250 MHz - supports fast edge transitions in PWM-driven loads without oscillation |
Applications
| Automotive Body Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving door lock actuators and interior lamp arrays in BCM modules. IC Role / Device Role / Timing Role: Digital switch controlling 12 V inductive loads via microcontroller GPIO. Use Value: Eliminates discrete resistor network, reduces PCB area by >30%, and ensures AEC-Q101-compliant reliability over temperature. | Use Scenario: Level-shifting and buffering analog sensor outputs to 3.3 V MCU inputs. IC Role / Device Role / Timing Role: Active pull-up/pull-down switch for open-drain sensor lines. Use Value: Provides defined logic thresholds (VIN(on) ≤ 3 V) and <0.5 μA leakage, improving ADC accuracy in noisy industrial environments. |
| Consumer Appliance Control | LED Lighting Driver |
Use Scenario: Controlling relay coils and indicator LEDs in smart home appliances. IC Role / Device Role / Timing Role: General-purpose logic-level switch interfacing MCU to higher-voltage peripherals. Use Value: 50 V VCC rating accommodates transient spikes in AC-powered systems; RoHS/Green compliance meets regional regulatory requirements. | Use Scenario: Constant-current sink for RGB LED strings in automotive interior lighting. IC Role / Device Role / Timing Role: Low-side current switch modulated via PWM from MCU. Use Value: 100 mA IC rating supports multi-LED strings; 0.1 V VCE(sat) minimizes thermal rise at 100% duty cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN 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 105°C TJ (vs. +150°C) | Not AEC-Q101 qualified; unsuitable for under-hood automotive use | Select only for commercial-temperature consumer applications where cost is prioritized over extended thermal range |
| DTC144EEU-7-F | Same electrical specs, but non-automotive grade; lacks PPAP capability and IATF 16949 manufacturing certification | Approved for industrial automation but not for OEM automotive production | Choose when AEC-Q101 documentation and change control are not required |
Compared with NSV144EHT1G and DTC144EEU-7-F, ADTC144ECAQ uniquely combines full AEC-Q101 qualification, +150°C operation, and PPAP support - making it the only option for safety-critical automotive body electronics requiring long-term supply continuity and audit-ready compliance.
Availability
ADTC144ECAQ is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, consumer appliance control systems, and LED lighting drivers requiring stable component supply and automotive-grade traceability.
Supply support for ADTC144ECAQ 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 distribution operations across Asia, Europe, and North America.
The ADTC144ECAQ belongs to Diodes' automotive-qualified pre-biased transistor product line, engineered specifically for replacing discrete BJT + resistor combinations in space- and reliability-constrained automotive electronics.
FAQ
What is the maximum allowable junction temperature for ADTC144ECAQ?
The ADTC144ECAQ has an operating junction temperature range of -55°C to +150°C. This rating is validated under AEC-Q101 stress testing and applies across its full specified current and voltage ranges. Derating begins above 25°C ambient per the published RθJA = 403 °C/W curve on minimum-copper FR-4 board.
Does ADTC144ECAQ require external biasing resistors?
No. ADTC144ECAQ integrates two 47 kΩ bias resistors (R1 = R2) internally between base-emitter and base-collector terminals. This eliminates the need for external resistors in standard digital switching configurations, reducing component count and PCB footprint while ensuring consistent biasing across temperature and process variation.
Is ADTC144ECAQ compatible with lead-free reflow soldering processes?
Yes. ADTC144ECAQ uses matte tin-plated leads and is fully RoHS 3 compliant (2015/863/EU). It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard lead-free reflow profiles up to 260°C peak temperature, with no special pre-bake required.
How does the gain-bandwidth product affect switching performance?
The 250 MHz fT indicates the transistor's intrinsic frequency limit under small-signal conditions. In switching applications, this translates to fast turn-on/turn-off times - typically sub-100 ns - enabling clean PWM edges at frequencies up to several MHz, critical for minimizing EMI in LED dimming and motor control circuits.
ADTC144ECAQ-13 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:
- NPN - 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:
- 80 @ 5mA, 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
ADTC144ECAQ-13 FAQ
1.How can I place an order for ADTC144ECAQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTC144ECAQ-13 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 ADTC144ECAQ-13 reliable?
The price and inventory of ADTC144ECAQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTC144ECAQ-13 is usually 5 days.
3.What payment methods are accepted for ADTC144ECAQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTC144ECAQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTC144ECAQ-13?
ADTC144ECAQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTC144ECAQ-13 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 ADTC144ECAQ-13?
For technical support, including ADTC144ECAQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTC144ECAQ-13 requirements.
6.How does Aetrix verify that ADTC144ECAQ-13 is sourced from the original manufacturer or authorized distributors?
All ADTC144ECAQ-13 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 ADTC144ECAQ-13 meets industry standards.
7.What is the process for return or replacement of ADTC144ECAQ-13?
All ADTC144ECAQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with ADTC144ECAQ-13, 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 ADTC144ECAQ-13 part is unused and in its original packaging.
Return procedure for ADTC144ECAQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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