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Diodes Incorporated ADTA124ECAQ-13
- Part No.:
- ADTA124ECAQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADTA124ECAQ-13.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,390
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Product details
Overview
ADTA124ECAQ from Diodes Incorporated is a PNP pre-biased transistor in SOT23 package, featuring integrated 22 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 an automotive-grade logic-level switch in low-power load control circuits.
For engineers reviewing the ADTA124ECAQ datasheet, ADTA124ECAQ pinout, ADTA124ECAQ application, or ADTA124ECAQ equivalent, key selection criteria include its guaranteed turn-on/off voltage thresholds (−3 V / −0.5 V), DC current gain of 56 at −5 mA, −0.3 V saturation voltage, and IATF 16949-manufactured traceability for safety-critical systems.
Technical Context
This device integrates matched 22 kΩ base-emitter and base-collector resistors to eliminate external bias components, enabling direct TTL/CMOS-compatible switching. Its PNP topology supports high-side load switching with active-low input control.
The −55 °C to +150 °C operating range, 310 mW power dissipation on FR-4 board, and thermal resistance of 403 °C/W support under-hood automotive environments. Gain-bandwidth product of 250 MHz confirms suitability for moderate-speed digital switching-not RF or analog amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Max | −50 V: Supports 48 V automotive battery transients and load-dump protection |
| IC Max | −100 mA: Drives small solenoids, LEDs, or logic inputs without external driver stage |
| VCE(sat) | −0.3 V @ −10 mA: Minimizes conduction loss in high-duty-cycle switching |
| VIN(on) | −1.9 V (typ): Ensures reliable turn-on with standard 3.3 V or 5 V microcontroller outputs |
| GI | 56 @ −5 mA: Provides stable current gain across temperature for predictable switching behavior |
| R1/R2 | 22 kΩ ±30%: Enables resistor-matched biasing for consistent β-independent operation |
| fT | 250 MHz: Confirms fast switching capability for PWM up to ~10 MHz with margin |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated leads, UL 94V-0 rated, 0.008 g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | PNP emitter terminal | Connected to supply rail (e.g., +12 V) in high-side switch configuration |
| 2 (Base) | Internal node between R1 and R2 | Accepts logic-level input; R1 connects to emitter, R2 to collector for self-biasing |
| 3 (Collector) | PNP collector terminal | Drives load to ground; output current flows from emitter to collector when active |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Matched internal bias resistors | R1 = R2 = 22 kΩ eliminates external components and reduces PCB footprint by >30% |
| Green compound packaging | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets global environmental mandates |
| −55 °C to +150 °C operation | Enables deployment in under-hood, transmission, or battery management modules without derating |
Applications
| Automotive Door Module | LED Brake Light Control |
|---|---|
Use Scenario: Switching window motor drivers and lock actuators in centralized door control units. IC Role / Device Role / Timing Role: High-side PNP switch controlled by MCU GPIO to enable/disable 12 V loads. Use Value: −0.3 V saturation voltage minimizes heat generation during continuous operation; AEC-Q101 ensures reliability over 15-year vehicle lifetime. | Use Scenario: Driving rear LED brake light strings in response to CAN bus commands. IC Role / Device Role / Timing Role: Logic-level interface translating 3.3 V microcontroller signals to 12 V LED current paths. Use Value: Guaranteed −3 V turn-on threshold ensures compatibility with automotive-grade MCUs; 22 kΩ internal resistors prevent floating base states during ESD events. |
| Engine Coolant Fan Control | Body Control Module (BCM) Relay Driver |
Use Scenario: PWM-controlled activation of brushless fan motors via gate drivers. IC Role / Device Role / Timing Role: Level-shifting switch enabling MCU PWM signal to drive high-voltage fan controller ICs. Use Value: 250 MHz fT supports clean 20 kHz PWM edges; −50 V VCC withstands load-dump spikes up to ISO 7637-2 Pulse 5a. | Use Scenario: Replacing mechanical relays for interior lighting, HVAC, and mirror controls. IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical relay coils requiring low-power drive. Use Value: −100 mA IC rating matches typical 5–10 V relay coil currents; SOT23 footprint enables dense BCM layout. |
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 |
|---|---|---|---|
| NSV12201T1G | Higher VCC (−60 V), lower R1/R2 (10 kΩ), same SOT23 package | Better suited for 24 V commercial truck systems; faster turn-off due to lower base resistance | Select when higher voltage margin or faster switching is required; verify logic-level compatibility with −1.5 V VIN(on) |
| DXT3904P-7 | PNP pre-biased with R1 = 47 kΩ, R2 = open, different pinout (Emitter-Base-Collector) | Requires PCB redesign; optimized for ultra-low IB in battery-powered sensors | Choose only if lower input current (−0.15 mA typ) is critical and layout revision is acceptable |
Compared with NSV12201T1G and DXT3904P-7, ADTA124ECAQ offers balanced bias resistance (22 kΩ), tighter R1/R2 matching (±20% ratio tolerance), and AEC-Q101 certification out-of-box-making it optimal for cost-sensitive, production-ready automotive modules where qualification overhead must be minimized.
Availability
ADTA124ECAQ-13 is available at Aetrix Electronics and suitable for automotive door modules, LED brake light control, engine coolant fan control, and body control module relay drivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADTA124ECAQ 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 across Asia, Europe, and North America.
The ADTA series belongs to Diodes' Automotive-Grade Pre-Biased Transistor product line, designed specifically for AEC-Q101-compliant, high-reliability switching in 12 V/24 V vehicle subsystems with minimal external component count.
FAQ
What is the pin configuration of ADTA124ECAQ in SOT23?
ADTA124ECAQ uses standard SOT23 pinout: Pin 1 = Emitter, Pin 2 = Base (internal node between R1 and R2), Pin 3 = Collector. This matches JEDEC TO-236AB and is verified in Diodes' DS39210 Rev. 3 package drawing and top-view schematic.
Does ADTA124ECAQ require external bias resistors?
No. ADTA124ECAQ integrates two 22 kΩ resistors (R1 from emitter to base, R2 from base to collector), eliminating all external bias components. This simplifies PCB layout, improves reliability, and ensures consistent turn-on/turn-off behavior across temperature and process variation.
Is ADTA124ECAQ suitable for PWM-driven loads?
Yes. With a gain-bandwidth product of 250 MHz and −0.3 V saturation voltage, ADTA124ECAQ supports clean PWM switching up to 20 kHz. Its thermal resistance (403 °C/W) and 310 mW power dissipation allow sustained operation at 50% duty cycle driving ≤50 mA loads on standard FR-4 boards.
How does ADTA124ECAQ meet automotive reliability requirements?
ADTA124ECAQ is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949-certified facilities. It undergoes stress testing per AEC standards-including HTOL, TC, HAST, and ESD-and features halogen/antimony-free "Green" packaging compliant with RoHS 3 and automotive chemical content mandates.
ADTA124ECAQ-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):
- 22 kOhms
- Resistor - Emitter Base (R2):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 56 @ 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
ADTA124ECAQ-13 FAQ
1.How can I place an order for ADTA124ECAQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTA124ECAQ-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 ADTA124ECAQ-13 reliable?
The price and inventory of ADTA124ECAQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTA124ECAQ-13 is usually 5 days.
3.What payment methods are accepted for ADTA124ECAQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTA124ECAQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTA124ECAQ-13?
ADTA124ECAQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTA124ECAQ-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 ADTA124ECAQ-13?
For technical support, including ADTA124ECAQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTA124ECAQ-13 requirements.
6.How does Aetrix verify that ADTA124ECAQ-13 is sourced from the original manufacturer or authorized distributors?
All ADTA124ECAQ-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 ADTA124ECAQ-13 meets industry standards.
7.What is the process for return or replacement of ADTA124ECAQ-13?
All ADTA124ECAQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with ADTA124ECAQ-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 ADTA124ECAQ-13 part is unused and in its original packaging.
Return procedure for ADTA124ECAQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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