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Diodes Incorporated DDTA144VE-7
- Part No.:
- DDTA144VE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTA144VE-7.pdf
- Description:
- TRANS PREBIAS PNP 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:5,158
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Product details
Overview
DDTA144VE-7 from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT523 package, featuring integrated bias resistors R1 = 47 kΩ and R2 = 10 kΩ (R1 ≠ R2), −50 V VCEO, −30 mA IO(max), and AEC-Q101 qualification for automotive-grade reliability. It functions as a digital switch or level translator in low-power logic interface circuits.
For engineers reviewing the DDTA144VE-7 datasheet, DDTA144VE-7 pinout, DDTA144VE-7 application, or DDTA144VE-7 equivalent, key selection criteria include input voltage threshold (VI(ON) = −3.0 V @ IO = −2 mA), output saturation voltage (VO(ON) = −0.3 V), DC current gain (GL = 33), and thermal resistance (RθJA = 833 °C/W).
Technical Context
This device integrates two discrete resistors (R1 = 47 kΩ, R2 = 10 kΩ) directly into the PNP transistor die to enable single-pin control of switching behavior without external bias components. Its asymmetric resistor ratio supports precise turn-on/turn-off thresholds under varying load conditions.
The SOT523 package delivers high power density (150 mW PD) with low thermal resistance and meets J-STD-020 moisture sensitivity Level 1. Designed for automotive signal conditioning, it operates across −55 °C to +150 °C and complies with AEC-Q101 stress testing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin. |
| IO(max) | −30 mA - Continuous output current capability; suitable for driving LEDs, small relays, or logic inputs. |
| R1 / R2 | 47 kΩ / 10 kΩ - Asymmetric internal bias network enabling defined switching threshold at −3.0 V input. |
| VO(ON) | −0.3 V - Low saturation voltage ensures minimal power loss and reliable logic-low output in active state. |
| GL | 33 - DC current gain at IC = −10 mA; sufficient for robust switching with low base drive current. |
| PD | 150 mW - Power dissipation limit on FR4 PCB; defines maximum continuous load under ambient conditions. |
| RθJA | 833 °C/W - Thermal resistance from junction to ambient; informs derating above 25 °C ambient temperature. |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic package (1.60 mm × 1.60 mm × 0.75 mm), lead-free, halogen-free, and qualified to AEC-Q101.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Connected to system ground or common return path; forms current sink node in PNP configuration. |
| 2 (Base) | Input control node | Internally connected to R1–R2 divider junction; accepts logic-level input to activate transistor. |
| 3 (Collector) | Output terminal | Drives load between VCC (−50 V max) and this pin; sinks current when enabled. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 ≠ R2 bias network | Eliminates need for two external resistors; reduces BOM count and PCB area in space-constrained designs. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics requiring high reliability. |
| SOT523 footprint | 0.002 g weight and 1.6 mm × 1.6 mm outline support miniaturized portable and automotive modules. |
| Green compound & RoHS compliance | Meets EU RoHS 3 (2015/863/EU), halogen-free (<900 ppm Br/Cl, <1000 ppm Sb), UL 94V-0 flammability rating. |
Applications
| Automotive Door Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Controlling window lift motor enable signals in door control units using 12 V battery-supplied logic. IC Role / Device Role / Timing Role: PNP digital switch translating microcontroller GPIO (3.3 V) to −12 V enable line with fast turn-on/turn-off. Use Value: Built-in R1/R2 eliminates external biasing, reducing component count and improving ESD robustness in harsh vehicle environments. |
Use Scenario: Level-shifting analog sensor outputs (e.g., thermistor-based temp sensing) to MCU ADC inputs in factory automation PLCs. IC Role / Device Role / Timing Role: Signal conditioner providing inverted, rail-to-rail compatible output with defined hysteresis via resistor ratio. Use Value: Asymmetric R1/R2 (47k/10k) sets precise −3.0 V activation threshold, ensuring noise immunity in electrically noisy industrial settings. |
| LED Status Indicator | Power Sequencing Control |
Use Scenario: Driving red/green status LEDs on embedded HMI panels powered from 5 V or 3.3 V supplies. IC Role / Device Role / Timing Role: Low-current sink switch activating LED anode-to-VCC with cathode tied to collector. Use Value: −0.3 V VO(ON) minimizes forward voltage drop, preserving LED brightness and efficiency at −30 mA max. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., 3.3 V LDO) in multi-rail FPGA or SoC systems during boot-up. IC Role / Device Role / Timing Role: Sequencing element triggered by reset controller output to gate downstream regulator EN pin. Use Value: −50 V VCEO headroom allows safe operation across varied supply domains, including isolated 24 V auxiliary rails. |
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 |
|---|---|---|---|
| DDTA144WE-7-F | R1 = 47 kΩ, R2 = 22 kΩ → higher R2 increases input impedance and raises VI(ON) to −4.0 V. | Better suited for high-impedance microcontroller outputs where lower base current is required. | Select when interfacing with weak-drive GPIOs or when tighter noise margin is needed above −3.0 V threshold. |
| DDTA124XE-7-F | R1 = 22 kΩ, R2 = 47 kΩ → swapped ratio yields VI(ON) = −1.4 V and GL = 68. | Enables faster switching in low-voltage logic domains (e.g., 1.8 V I/O) but with reduced noise immunity. | Choose for 1.8–2.5 V control signals where earlier turn-on is prioritized over noise rejection. |
Compared with DDTA144WE-7-F and DDTA124XE-7-F, DDTA144VE-7 offers the optimal balance of noise-immune −3.0 V turn-on threshold and moderate gain (GL = 33), making it ideal for 3.3 V/5 V automotive and industrial interfaces where both robustness and predictable timing matter.
Availability
DDTA144VE-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, LED driver circuits, and power sequencing systems requiring stable component supply and AEC-Q101 reliability assurance.
Supply support for DDTA144VE-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, specializing in high-reliability, energy-efficient components for automotive, industrial, and consumer markets.
The DDTA series targets cost-sensitive, space-constrained applications requiring simplified digital switching-designed specifically to replace discrete transistor + dual-resistor solutions in automotive ECUs and smart sensors.
FAQ
What is the maximum operating temperature for DDTA144VE-7?
The DDTA144VE-7 is rated for operation from −55 °C to +150 °C junction temperature. Its SOT523 package and AEC-Q101 qualification ensure stable performance in under-hood automotive environments and industrial enclosures with elevated ambient temperatures.
Can DDTA144VE-7 be used with 3.3 V logic controllers?
Yes - its VI(ON) is −3.0 V at IO = −2 mA, meaning a 3.3 V GPIO pulled low to 0 V provides sufficient negative swing to reliably activate the PNP switch. The −0.3 V VO(ON) ensures clean logic-low output even at full rated current.
Is there a complementary NPN version of DDTA144VE-7?
Yes - the DDTC144VE-7 is the direct NPN counterpart, sharing identical R1/R2 values (47 kΩ / 10 kΩ), SOT523 package, AEC-Q101 qualification, and matching electrical specs except polarity. It is listed in Diodes' DS30318 datasheet alongside the DDTA series.
Does DDTA144VE-7 require external pull-up or pull-down resistors?
No - the internal R1–R2 network provides complete biasing. Pin 2 (base) connects only to the control signal; no external resistors are needed for basic switching operation. This simplifies layout and improves reliability in vibration-prone applications like automotive modules.
DDTA144VE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 33 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 150 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
DDTA144VE-7 FAQ
1.How can I place an order for DDTA144VE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA144VE-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 DDTA144VE-7 reliable?
The price and inventory of DDTA144VE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA144VE-7 is usually 5 days.
3.What payment methods are accepted for DDTA144VE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA144VE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA144VE-7?
DDTA144VE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA144VE-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 DDTA144VE-7?
For technical support, including DDTA144VE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA144VE-7 requirements.
6.How does Aetrix verify that DDTA144VE-7 is sourced from the original manufacturer or authorized distributors?
All DDTA144VE-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 DDTA144VE-7 meets industry standards.
7.What is the process for return or replacement of DDTA144VE-7?
All DDTA144VE-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTA144VE-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 DDTA144VE-7 part is unused and in its original packaging.
Return procedure for DDTA144VE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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