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Diodes Incorporated DDTA143EE-7-F
- Part No.:
- DDTA143EE-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTA143EE-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
DDTA143EE-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT523 package with integrated bias resistors R1 = R2 = 4.7kΩ, designed for digital switching and level translation in low-power logic interfaces. It delivers -100mA output current capability, -0.3V saturation voltage at -20mA load, and DC current gain of -20 at -20mA collector current, supporting compact signal conditioning in space-constrained PCBs.
For engineers reviewing the DDTA143EE-7-F datasheet, DDTA143EE-7-F pinout, DDTA143EE-7-F application, or DDTA143EE-7-F equivalent, key selection criteria include verified input resistor tolerance (±30%), guaranteed VI(OFF) ≤ -1.1V at -5V supply, thermal resistance of 833°C/W on FR-4, and AEC-Q101 qualification readiness for automotive-grade reliability assessment.
Technical Context
This device integrates a PNP bipolar transistor with two matched 4.7kΩ bias resistors (R1 = R2) in a single SOT523 package, enabling direct interface with 3.3V/5V CMOS/TTL logic without external base resistors. Its complementary NPN counterpart is DDTC143EE-7-F.
The internal resistor network provides fixed-current biasing that ensures predictable turn-on/off thresholds: VI(ON) typ. -1.9V and VI(OFF) typ. -1.1V under defined test conditions, supporting robust noise margin in industrial control I/O stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50V - Maximum allowable collector-emitter voltage before breakdown; supports rail-to-rail operation in 24V industrial systems. |
| R1 = R2 | 4.7kΩ ±30% - Matched internal base bias resistors eliminate need for external components in digital switch designs. |
| IC(MAX) | -100mA - Continuous collector current rating defines maximum sink capability for LED drivers or relay coils. |
| VCE(SAT) | -0.3V @ -20mA - Low saturation voltage minimizes power loss and heat generation in high-duty-cycle switching. |
| PD | 150mW - Power dissipation limit on FR-4 board dictates thermal derating above +25°C ambient. |
| fT | 250MHz - Gain-bandwidth product confirms suitability for medium-speed digital signal routing up to ~50MHz edge rates. |
| RθJA | 833°C/W - Junction-to-ambient thermal resistance determines temperature rise per watt; requires careful layout for >50mW operation. |
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 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Input reference node | Connected to logic ground or signal return; forms common terminal for bias resistor network. |
| 2 (Collector) | Output sink terminal | Drives load to ground; handles full output current (-100mA max); electrically isolated from bias network. |
| 3 (Base) | Bias input node | Receives logic-level input; internally connected to R1–R2 junction; enables direct CMOS/TTL drive. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 4.7kΩ matched resistors reduce BOM count and PCB area by eliminating two external components. |
| Low VCE(SAT) | -0.3V at -20mA ensures <10mW conduction loss per switch, critical for battery-powered sensor nodes. |
| AEC-Q101 readiness | Qualified to JEDEC standards per AEC-Q requirements; supports PPAP-capable automotive subsystem qualification. |
| Green RoHS compliance | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); meets EU Directive 2015/863/EU (RoHS 3). |
| SOT523 footprint | 1.6mm × 1.6mm outline enables placement in dense MCU peripheral zones where QFN or SOIC are impractical. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
|
Use Scenario: Isolating microcontroller GPIO pins from 12V/24V field sensors and actuators in programmable logic controllers. IC Role / Device Role / Timing Role: Digital switch providing level-shifted, current-sinking interface between 3.3V MCU and higher-voltage loads. Use Value: Eliminates discrete base resistors and reduces component count while maintaining noise immunity via defined VI(OFF) ≤ -1.1V. |
Use Scenario: Driving door lock solenoids, mirror position motors, and interior lighting in vehicle body electronics. IC Role / Device Role / Timing Role: Pre-biased PNP switch handling intermittent 100mA loads with fast turn-off enabled by internal resistor ratio. Use Value: Enables AEC-Q101-aligned design without external biasing, reducing layout complexity in tight ECU modules. |
| IoT Sensor Node Signal Conditioning | Consumer Appliance Control Boards |
|
Use Scenario: Enabling battery-operated environmental sensors to interface with wake-up interrupts and status LEDs. IC Role / Device Role / Timing Role: Low-quiescent-current digital switch for active-low enable signals and LED anode control. Use Value: Delivers -0.15mA input current at -5V input, extending coin-cell life beyond 5 years in always-on monitoring modes. |
Use Scenario: Controlling relays, buzzers, and indicator lamps in washing machines, microwaves, and HVAC panels. IC Role / Device Role / Timing Role: Robust logic-level translator replacing mechanical switches and discrete transistors in cost-sensitive white goods. Use Value: Reduces assembly steps and improves long-term reliability versus hand-soldered resistor-transistor combinations. |
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 |
|---|---|---|---|
| DDTA123EE-7-F | R1 = R2 = 2.2kΩ; lower input impedance yields higher Il (−3.8mA @ −5V) and faster switching but increased static power draw. | Better suited for high-speed 5V logic interfaces requiring sub-100ns propagation; less optimal for battery-powered 3.3V systems. | Select when driving heavier capacitive loads or needing tighter VI(ON) threshold (−1.1V typ.) at same current. |
| DDTC143EE-7-F | NPN complement with identical 4.7kΩ bias network; VCEO = 50V, IC(MAX) = +100mA, VCE(SAT) = +0.3V. | Used for sourcing (not sinking) configurations; requires inverted logic or pull-up topology in same circuits. | Choose for high-side switching or when interfacing with open-collector outputs requiring active pull-up functionality. |
Compared with DDTA123EE-7-F and DDTC143EE-7-F, DDTA143EE-7-F offers balanced input current (−1.8mA @ −5V) and noise margin for 3.3V logic compatibility, making it optimal for mixed-voltage industrial I/O where both speed and quiescent power matter.
Availability
DDTA143EE-7-F is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and IoT sensor node signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for DDTA143EE-7-F 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 the DDTA (R1 = R2 Series) pre-biased transistor family, engineered specifically for simplified digital switching in space- and cost-constrained applications where resistor integration eliminates layout overhead and improves consistency.
FAQ
What is the maximum continuous output current for DDTA143EE-7-F?
The absolute maximum continuous collector current is -100mA, tested under pulsed conditions with TJ ≤ 150°C. Derating is required above +25°C ambient per the 833°C/W RθJA value; at +85°C, usable current drops to approximately -65mA to maintain safe junction temperature.
Does DDTA143EE-7-F require external base resistors?
No - it integrates two matched 4.7kΩ bias resistors (R1 = R2) internally, enabling direct connection to 3.3V or 5V logic outputs without external components. The base terminal connects directly to the driving signal, while emitter and collector handle load current routing.
Is DDTA143EE-7-F qualified for automotive use?
It is built in IATF 16949-certified facilities and qualified to JEDEC standards referenced in AEC-Q101. While not pre-certified, it supports PPAP documentation and change-controlled automotive qualification processes - contact Diodes or Aetrix for AEC-Q101 test reports and PPAP packages.
How does the input voltage range affect switching behavior?
VI(OFF) is specified ≤ -1.1V at -5V supply, ensuring reliable cutoff with logic-high inputs ≥ 0V. VI(ON) is -1.9V typical at -20mA load, giving >0.8V noise margin against ground bounce in noisy industrial environments - critical for stable operation in motor-driven systems.
DDTA143EE-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 4.7 kOhms
- Resistor - Emitter Base (R2):
- 4.7 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 20 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 150 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
DDTA143EE-7-F FAQ
1.How can I place an order for DDTA143EE-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA143EE-7-F 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 DDTA143EE-7-F reliable?
The price and inventory of DDTA143EE-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA143EE-7-F is usually 5 days.
3.What payment methods are accepted for DDTA143EE-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA143EE-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA143EE-7-F?
DDTA143EE-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA143EE-7-F 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 DDTA143EE-7-F?
For technical support, including DDTA143EE-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA143EE-7-F requirements.
6.How does Aetrix verify that DDTA143EE-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA143EE-7-F 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 DDTA143EE-7-F meets industry standards.
7.What is the process for return or replacement of DDTA143EE-7-F?
All DDTA143EE-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA143EE-7-F, 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 DDTA143EE-7-F part is unused and in its original packaging.
Return procedure for DDTA143EE-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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