My Inquiry
My Account
Diodes Incorporated ADTC144VCAQ-7
- Part No.:
- ADTC144VCAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADTC144VCAQ-7.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,819
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADTC144VCAQ from Diodes Incorporated is an AEC-Q101-qualified NPN pre-biased small-signal transistor in SOT23 package, featuring integrated 47 kΩ and 10 kΩ bias resistors, 50 V VCC, 30 mA output current, and 0.1–0.3 V VO(on) at 10 mA/0.5 mA drive-designed for automotive logic-level interface and load switching in body control modules.
For engineers reviewing the ADTC144VCAQ datasheet, ADTC144VCAQ pinout, ADTC144VCAQ application, or ADTC144VCAQ equivalent, this part supports robust, space-constrained automotive signal conditioning where guaranteed turn-on above 5 V and turn-off below 1 V simplify microcontroller GPIO interfacing without external bias networks.
Technical Context
This PBT integrates emitter-grounded NPN topology with two monolithically embedded resistors (R1 = 47 kΩ, R2 = 10 kΩ) forming a voltage-divider bias network that sets base current independently of external components. It operates as a digital switch with defined logic thresholds: guaranteed OFF when input voltage <1.0 V and ON when >5.0 V under specified load conditions.
The device delivers DC current gain (GI) ≥33 at 5 mA output, supports 250 MHz fT, and maintains stable performance across –55°C to +150°C ambient, enabled by epitaxial planar die construction and IATF 16949-certified manufacturing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Max | 50 V - supports 12 V/24 V automotive supply rails with margin for transients |
| VO(on) | 0.1–0.3 V at IO/Il = 10 mA/0.5 mA - ensures low saturation loss in driver stages |
| GI Min | 33 at VO = 5 V, IO = 5 mA - guarantees reliable switching with minimal base drive |
| R1 / R2 | 47 kΩ / 10 kΩ ±30% / ±20% - enables fixed-gain, single-resistor-input logic interface |
| fT | 250 MHz - sufficient for PWM up to ~10 MHz with adequate edge fidelity |
| PD | 310 mW on FR-4 - defines thermal limit for continuous operation in compact PCB layouts |
Pinout & Package
Package: SOT23 - surface-mount, 3-pin plastic package with matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound, and 0.008 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Ground reference terminal | Connected internally to GND node of bias network; serves as common return for input and output paths |
| 2 (Base) | Bias resistor junction | Internal connection point between R1 (input-to-base) and R2 (base-to-emitter); not externally accessible |
| 3 (Collector) | Switched output terminal | Drives loads (e.g., LEDs, relays, MOSFET gates) with controlled saturation voltage and current limiting |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use with PPAP capability and IATF 16949 manufacturing |
| Integrated bias network | Monolithic 47 kΩ + 10 kΩ resistor pair eliminates 2 external components and layout uncertainty |
| Guaranteed logic thresholds | VI(off) ≤1.0 V and VI(on) ≥5.0 V ensure deterministic switching with 3.3 V/5 V MCUs |
| Green construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), fully RoHS 3 compliant |
Applications
| Body Control Module Inputs | LED Driver Interface |
|---|---|
|
Use Scenario: Interfacing push-button or sensor signals to MCU GPIOs in door module or lighting control units. IC Role / Device Role / Timing Role: Digital input buffer and level translator converting mechanical switch states to clean CMOS-compatible logic levels. Use Value: Eliminates need for external pull-up/pull-down and debouncing resistors, reducing BOM count and PCB area in space-constrained modules. |
Use Scenario: Driving indicator LEDs in instrument clusters or interior lighting with precise current control. IC Role / Device Role / Timing Role: Low-VCE(sat) current sink enabling efficient LED on/off switching with minimal power loss. Use Value: Delivers consistent 30 mA output with <0.3 V drop at full load, improving thermal margin over discrete BJT + resistor solutions. |
| MOSFET Gate Driver | Relay Coil Driver |
|
Use Scenario: Turning on N-channel power MOSFETs in 12 V automotive power distribution circuits. IC Role / Device Role / Timing Role: High-gain, low-output-impedance switch providing fast gate charging and discharge via emitter-follower configuration. Use Value: Achieves <1 µs turn-on delay with 5 V logic input, supporting PWM frequencies up to 10 kHz without gate oscillation. |
Use Scenario: Controlling 12 V relay coils in HVAC actuators or seat motor controllers. IC Role / Device Role / Timing Role: Robust current sink capable of sustaining 100 mA peak coil current with built-in flyback protection compatibility. Use Value: Withstands 50 V VCC rating and –55°C to +150°C operation, ensuring reliability during cold cranking and under-hood thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSV144VCAQ | Same SOT23 footprint and bias values but optimized for higher temperature stability (±15% R tolerance vs. ±30%) | Better suited for engine bay sensors requiring tighter gain consistency across –40°C to +125°C | Select when long-term parametric drift must be minimized; otherwise ADTC144VCAQ offers broader availability and lower cost |
| DTC144ECA-7-F | Non-automotive grade; lacks AEC-Q101 qualification, PPAP support, and IATF 16949 traceability | Restricted to non-safety-critical consumer or industrial applications only | Use only if automotive compliance is unnecessary and cost is primary constraint |
Compared with NSV144VCAQ and DTC144ECA-7-F, ADTC144VCAQ uniquely combines AEC-Q101 validation, guaranteed logic thresholds, and full RoHS 3/Green compliance-making it the only choice for production automotive ECUs requiring change-controlled sourcing and audit-ready documentation.
Availability
ADTC144VCAQ is available at Aetrix Electronics and suitable for automotive body electronics, LED lighting control, relay interface circuits, and MOSFET gate driving requiring stable component supply and full automotive qualification.
Supply support for ADTC144VCAQ 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.
The ADTC144VCAQ belongs to Diodes' Automotive Pre-Biased Transistor (PBT) product line, engineered specifically to replace discrete BJT + resistor combinations in AEC-Q101-compliant systems while reducing design complexity and test overhead.
FAQ
Is ADTC144VCAQ pin-compatible with standard SOT23 NPN transistors?
No-it is not pin-compatible with generic SOT23 NPN transistors due to internal bias resistor integration. Pin 1 is emitter, Pin 2 is base (internally biased), and Pin 3 is collector. External base access is unavailable, so direct substitution requires circuit redesign to remove external bias components.
What is the maximum continuous output current for ADTC144VCAQ at 85°C ambient?
At 85°C ambient on a minimum-copper FR-4 board, the derated power dissipation is ~200 mW. With VO(on) ≤0.3 V, the maximum continuous output current is approximately 25 mA-calculated as PD/VO(on) = 200 mW / 0.3 V ≈ 667 mA worst-case, but limited by the 30 mA absolute maximum rating per datasheet.
Does ADTC144VCAQ require external flyback protection when driving inductive loads?
Yes-while the device withstands 50 V VCC, it does not integrate clamp diodes. When switching relay coils or solenoids, an external flyback diode (e.g., 1N4148) must be placed cathode-to-collector, anode-to-emitter to prevent voltage spikes exceeding VCC rating during turn-off.
Can ADTC144VCAQ be used with 3.3 V microcontrollers without level shifting?
Yes-its VI(on) guarantee of ≤5.0 V and VI(off) guarantee of ≥1.0 V ensure reliable switching with 3.3 V logic outputs. At VI = 3.3 V, typical IO exceeds 2 mA, well above the 100 µA threshold for guaranteed turn-on per datasheet test condition.
ADTC144VCAQ-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:
- 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):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 33 @ 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
ADTC144VCAQ-7 FAQ
1.How can I place an order for ADTC144VCAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADTC144VCAQ-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 ADTC144VCAQ-7 reliable?
The price and inventory of ADTC144VCAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADTC144VCAQ-7 is usually 5 days.
3.What payment methods are accepted for ADTC144VCAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADTC144VCAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADTC144VCAQ-7?
ADTC144VCAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADTC144VCAQ-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 ADTC144VCAQ-7?
For technical support, including ADTC144VCAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADTC144VCAQ-7 requirements.
6.How does Aetrix verify that ADTC144VCAQ-7 is sourced from the original manufacturer or authorized distributors?
All ADTC144VCAQ-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 ADTC144VCAQ-7 meets industry standards.
7.What is the process for return or replacement of ADTC144VCAQ-7?
All ADTC144VCAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with ADTC144VCAQ-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 ADTC144VCAQ-7 part is unused and in its original packaging.
Return procedure for ADTC144VCAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADTC144VCAQ-7 Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
