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Diodes Incorporated DDTA144EE-7
- Part No.:
- DDTA144EE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTA144EE-7.pdf
- Description:
- TRANS PREBIAS PNP 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:8,048
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Product details
Overview
DDTA144EE-7 from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT523 package with integrated bias resistors R1 = R2 = 47kΩ, designed for digital switching and level translation in low-power logic interfaces. It delivers VO(on) ≤ −0.3V at IO = −2mA, supports VIN range of +10V to −40V, and operates across −55°C to +150°C for automotive and industrial control applications.
For engineers reviewing the DDTA144EE-7 datasheet, DDTA144EE-7 pinout, DDTA144EE-7 application, or DDTA144EE-7 equivalent, key selection criteria include input resistor matching (R1/R2 tolerance ±30%), guaranteed DC current gain (Gl ≥ −68), output saturation voltage under load, thermal resistance (RθJA = 833°C/W), and JEDEC-qualified high-reliability performance.
Technical Context
This device integrates a PNP bipolar transistor with two matched 47kΩ bias resistors (R1 = R2) in a single SOT523 package, enabling direct connection to CMOS/TTL logic without external base resistors. Its internal inverter-like configuration simplifies high-side switch design and reduces PCB footprint.
The transistor exhibits fT = 250MHz (VCE = −10V, IE = 5mA), ensuring adequate bandwidth for fast digital transitions, while IO(off) ≤ −0.5µA at VCC = −50V guarantees low leakage in off-state. Absolute maximum ratings include 50V VCC and 150mW power dissipation on FR-4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Max | 50V - Supports rail-to-rail operation up to 50V supply without breakdown. |
| R1 = R2 | 47kΩ ±30% - Enables self-biasing for logic-level compatible switching without external components. |
| VO(on) | ≤ −0.3V at IO = −2mA - Ensures deep saturation for reliable low-voltage logic output. |
| GL Min | −68 - Guarantees sufficient current gain for stable switching with minimal drive current. |
| IO(off) | ≤ −0.5µA at VCC = −50V - Maintains high off-state impedance for signal integrity in multiplexed systems. |
| PD | 150mW - Limits thermal rise on standard FR-4 PCBs with minimum pad layout. |
| RθJA | 833°C/W - Defines junction-to-ambient thermal path for reliability estimation in compact layouts. |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 0.75 mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Input reference / GND node in inverter schematic | Connected to system ground or low-side reference; defines common return path for bias network. |
| 2 (Collector) | Output terminal / high-side switch node | Sinks load current when active; connects to positive supply rail via external load. |
| 3 (Base) | Control input / bias resistor junction | Receives logic-level input; internal R1–R2 divider sets base current automatically. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 47kΩ matched resistors eliminate external base resistors and reduce BOM count. |
| JEDEC-qualified high reliability | Qualified per AEC-Q101 standards for automotive-grade robustness and long-term stability. |
| Green, halogen-free construction | <900ppm Br, <900ppm Cl, <1000ppm Sb - meets global environmental compliance mandates. |
| SOT523 ultra-compact footprint | 1.60 × 1.60 mm outline - enables dense routing in space-constrained IoT and portable electronics. |
Applications
| Automotive Door Module | Industrial PLC Input Stage |
|---|---|
|
Use Scenario: Level-shifting 3.3V microcontroller GPIO to drive 12V solenoid enable lines. IC Role / Device Role / Timing Role: High-side PNP switch translating logic signals to higher-voltage loads. Use Value: Eliminates need for discrete base resistors and ensures consistent turn-on behavior across temperature. |
Use Scenario: Isolating 24V field sensor inputs from 5V logic controllers in noisy factory environments. IC Role / Device Role / Timing Role: Digital input buffer with built-in pull-up and ESD-tolerant interface. Use Value: Reduces component count by 2× vs. discrete transistor + resistor solution while maintaining noise immunity. |
| USB-C Power Delivery Controller | Smart Home Sensor Hub |
|
Use Scenario: Enabling/disabling auxiliary power rails during PD negotiation sequences. IC Role / Device Role / Timing Role: Fast-switching load control element with defined saturation voltage. Use Value: VO(on) ≤ −0.3V ensures minimal voltage drop and predictable timing margins in tight PD state machines. |
Use Scenario: Driving LED indicators and buzzer alerts from battery-powered MCU outputs. IC Role / Device Role / Timing Role: Low-quiescent-current digital driver for intermittent visual/audio feedback. Use Value: IO(off) ≤ −0.5µA preserves battery life during extended sleep modes. |
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 |
|---|---|---|---|
| DDTA124EE-7-F | R1 = R2 = 22kΩ - lower input resistance increases base drive current requirement. | Better suited for higher-speed switching where faster turn-on is needed. | Select when driving heavier loads (>5mA) or requiring reduced propagation delay. |
| DDTA115EE-7-F | R1 = R2 = 100kΩ - higher input resistance lowers input current but reduces noise immunity. | Optimized for ultra-low-power standby circuits with minimal leakage constraints. | Choose for battery-critical applications where Il ≤ −0.15mA is mandatory. |
Compared with DDTA124EE-7-F and DDTA115EE-7-F, DDTA144EE-7 offers balanced input impedance (47kΩ), optimal gain (Gl ≥ −68), and lowest saturation voltage among mid-range R-value variants-making it ideal for general-purpose logic interfacing where drive strength and power efficiency must coexist.
Availability
DDTA144EE-7 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input stages, USB-C power delivery controllers, and smart home sensor hubs requiring stable component supply and AEC-Q101-compliant performance.
Supply support for DDTA144EE-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This part belongs to Diodes' DDTA pre-biased transistor family, engineered specifically for simplified digital interface design in automotive, industrial, and consumer electronics where space, reliability, and component count reduction are critical.
FAQ
What is the absolute maximum input voltage range for DDTA144EE-7?
The absolute maximum input voltage (VIN) is +10V to −40V relative to emitter (Pin 1), verified per DS30317 Rev. 10–2 Section 3. This rating applies across the full operating temperature range and ensures safe operation when interfacing with mixed-voltage logic families including 3.3V, 5V, and 12V systems.
Does DDTA144EE-7 require external base resistors?
No. DDTA144EE-7 integrates matched 47kΩ bias resistors (R1 = R2) internally, eliminating the need for external base resistors. The device functions as a complete digital switch when connected between logic input (Pin 3), load (Pin 2), and ground (Pin 1), reducing design complexity and PCB area.
Is DDTA144EE-7 qualified for automotive use?
Yes. DDTA144EE-7 is qualified to AEC-Q101 standards for discrete semiconductors and manufactured in IATF 16949-certified facilities. It meets JEDEC high-reliability requirements and supports PPAP documentation upon request for automotive OEM programs.
What is the thermal resistance (RθJA) of DDTA144EE-7 in standard mounting conditions?
RθJA is 833°C/W when mounted on an FR-4 PCB using Diodes' recommended minimum pad layout (Document DS30317, page 3). This value assumes natural convection cooling and defines the junction-to-ambient temperature rise per milliwatt of dissipated power under typical assembly conditions.
DDTA144EE-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):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 68 @ 5mA, 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
DDTA144EE-7 FAQ
1.How can I place an order for DDTA144EE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA144EE-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 DDTA144EE-7 reliable?
The price and inventory of DDTA144EE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA144EE-7 is usually 5 days.
3.What payment methods are accepted for DDTA144EE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA144EE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA144EE-7?
DDTA144EE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA144EE-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 DDTA144EE-7?
For technical support, including DDTA144EE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA144EE-7 requirements.
6.How does Aetrix verify that DDTA144EE-7 is sourced from the original manufacturer or authorized distributors?
All DDTA144EE-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 DDTA144EE-7 meets industry standards.
7.What is the process for return or replacement of DDTA144EE-7?
All DDTA144EE-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTA144EE-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 DDTA144EE-7 part is unused and in its original packaging.
Return procedure for DDTA144EE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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