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Diodes Incorporated DDTA143XE-7-F
- Part No.:
- DDTA143XE-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTA143XE-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:4,398
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Product details
Overview
DDTA143XE-7-F from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT523 package, featuring built-in bias resistors R1 = 4.7 kΩ and R2 = 10 kΩ, VI(ON) = −3.0 V at IO = −20 mA, VO(ON) = −0.3 V, and DC current gain GL = 30 at VCE = −5 V / IC = −10 mA. It is AEC-Q101 qualified and used in automotive LED load switching and logic-level interface circuits.
For engineers reviewing the DDTA143XE-7-F datasheet, DDTA143XE-7-F pinout, DDTA143XE-7-F application, or DDTA143XE-7-F equivalent, this page delivers verified electrical parameters, terminal roles, real-world use cases, and validated alternatives for automotive-grade discrete signal control design.
Technical Context
This device integrates a PNP bipolar transistor with asymmetric internal base biasing (R1 ≠ R2), enabling direct logic-level input drive without external resistors. Its −3.0 V turn-on threshold and −0.3 V saturation voltage support robust low-side switching in 3.3 V/5 V digital systems.
The SOT523 package delivers 150 mW power dissipation and 833 °C/W junction-to-ambient thermal resistance on FR4 PCBs, while AEC-Q101 qualification confirms suitability for under-hood automotive environments operating from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R1 Resistor | 4.7 kΩ - sets base current limit for predictable turn-on behavior |
| R2 Resistor | 10 kΩ - provides active pull-down path to ensure fast, reliable turn-off |
| VI(ON) | −3.0 V @ IO = −20 mA - compatible with standard CMOS/TTL logic high levels |
| VO(ON) | −0.3 V max - minimizes conduction loss in load-switching applications |
| GL (DC Current Gain) | 30 min @ VCE = −5 V, IC = −10 mA - ensures stable saturation under defined drive conditions |
| PD | 150 mW - defines maximum continuous power handling on standard FR4 layout |
| TJ Range | −55 °C to +150 °C - supports operation in engine compartment and industrial control environments |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic case (1.60 mm × 1.60 mm × 0.75 mm), halogen- and antimony-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Output terminal (current sink) | Connected to load ground; carries full output current IO up to −100 mA |
| 2 (Base) | Input node with internal R1/R2 network | Accepts logic-level voltage; internal resistors eliminate need for external bias components |
| 3 (Collector) | Power rail connection | Connected to negative supply (e.g., −5 V or −12 V); reverse polarity operation enables high-side referenced loads |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetric internal bias (R1 ≠ R2) | Enables precise control of turn-on/turn-off timing without external resistor tuning |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body electronics, and lighting modules |
| SOT523 footprint | Reduces PCB area by >50% vs. SOT23 while maintaining solderability and thermal performance |
| Green compound (94V-0) | Meets UL flammability and environmental compliance requirements for enclosed systems |
Applications
| Automotive LED Tail Lamp Control | Industrial PLC Digital Output Module |
|---|---|
Use Scenario: Switching 12 V LED arrays in rear lighting clusters with microcontroller GPIO drive. IC Role / Device Role / Timing Role: PNP pre-biased switch providing inverted logic-level control and low VCE(SAT) conduction. Use Value: Eliminates two external resistors per channel, reducing BOM count and layout area while meeting AEC-Q101 temperature and lifetime requirements. | Use Scenario: Driving 24 V solenoid loads from isolated 3.3 V FPGA I/O pins in factory automation controllers. IC Role / Device Role / Timing Role: Level-shifting interface that translates low-voltage logic to higher-current sinking output. Use Value: −3.0 V VI(ON) ensures clean turn-on with margin against noise; −0.3 V VO(ON) limits power loss during sustained activation. |
| USB-C Port Power Path Management | Smart Home Sensor Node Power Gating |
Use Scenario: Enabling/disabling VBUS discharge paths during USB-C port reconfiguration sequences. IC Role / Device Role / Timing Role: Fast-turnoff current sink for controlled capacitor discharge with minimal leakage. Use Value: R2 = 10 kΩ ensures sub-µA off-state leakage (IO(OFF) ≤ −0.5 µA), preserving system standby current budgets. | Use Scenario: Power-gating BLE SoC peripherals (e.g., environmental sensors) to extend battery life in wireless nodes. IC Role / Device Role / Timing Role: Low-quiescent-load enable switch controlled directly by MCU GPIO. Use Value: SOT523 size allows integration into space-constrained coin-cell designs; 150 mW rating supports intermittent 50 mA peak loads. |
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 |
|---|---|---|---|
| DDTA143ZM-7-F | R1 = 4.7 kΩ, R2 = 47 kΩ - higher R2 increases turn-off speed but raises VI(ON) to −5.0 V | Better suited for high-noise environments requiring stronger input hysteresis | Select when faster turn-off and higher noise immunity outweigh reduced compatibility with 3.3 V logic |
| NSV143XETR | Same R1/R2 values, but packaged in SOT-723 (smaller footprint, 1.2 × 0.8 mm) and rated for −65 °C to +150 °C | Enables denser layouts in portable medical or aerospace edge devices | Choose for extreme miniaturization where SOT523 is insufficient and extended low-temp operation is required |
Compared with DDTA143XE-7-F, DDTA143ZM-7-F trades logic-level compatibility for improved noise rejection, while NSV143XETR offers identical biasing in a smaller package with broader temperature capability-neither is pin-compatible, requiring layout revision.
Availability
DDTA143XE-7-F is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC output stages, USB-C power management, and smart sensor power gating requiring stable component supply across production lifecycles.
Supply support for DDTA143XE-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, specializing in high-reliability components for automotive, industrial, and consumer markets.
The DDTA series targets cost-sensitive, space-constrained signal switching applications where integrated biasing reduces design complexity and improves manufacturing yield in automotive and industrial control systems.
FAQ
What is the maximum continuous output current for DDTA143XE-7-F?
The absolute maximum output current is −100 mA, but the recommended continuous operating current is −20 mA at TA = 25 °C with proper PCB thermal relief. At elevated ambient temperatures or without enhanced copper pour, derating is required per the power dissipation curve in DS30318 Rev. 9–2 Figure 1.
Can DDTA143XE-7-F be used in high-side switch configurations?
No - DDTA143XE-7-F is configured as a PNP emitter-follower with emitter grounded (pin 1), making it inherently a low-side sink switch. For high-side PNP switching, a discrete PNP transistor with external biasing or a dedicated high-side load switch IC is required.
Is the SOT523 package compatible with standard reflow profiles?
Yes - the SOT523 package is qualified for lead-free reflow per J-STD-020, with peak temperature tolerance up to 260 °C. The matte tin-plated terminals meet MIL-STD-202 Method 208 solderability requirements, and moisture sensitivity is rated Level 1, eliminating bake requirements prior to assembly.
How does the R1 ≠ R2 architecture improve switching performance?
The asymmetric resistor network (R1 = 4.7 kΩ, R2 = 10 kΩ) actively pulls the base toward emitter potential during turn-off, reducing stored charge and cutting fall time versus symmetric biasing. This results in faster transition between saturated and cutoff states, critical for PWM-driven LED dimming and digital output toggling above 10 kHz.
DDTA143XE-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):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 150 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
DDTA143XE-7-F FAQ
1.How can I place an order for DDTA143XE-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA143XE-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 DDTA143XE-7-F reliable?
The price and inventory of DDTA143XE-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 DDTA143XE-7-F is usually 5 days.
3.What payment methods are accepted for DDTA143XE-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA143XE-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA143XE-7-F?
DDTA143XE-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA143XE-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 DDTA143XE-7-F?
For technical support, including DDTA143XE-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA143XE-7-F requirements.
6.How does Aetrix verify that DDTA143XE-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA143XE-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 DDTA143XE-7-F meets industry standards.
7.What is the process for return or replacement of DDTA143XE-7-F?
All DDTA143XE-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA143XE-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 DDTA143XE-7-F part is unused and in its original packaging.
Return procedure for DDTA143XE-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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