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Diodes Incorporated DDTA143ZE-7
- Part No.:
- DDTA143ZE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
DDTA143ZE-7.pdf
- Description:
- TRANS PREBIAS PNP 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:1,241
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Product details
Overview
DDTA143ZE-7 from Diodes Incorporated is a PNP pre-biased small-signal transistor in SOT523 package, featuring integrated bias resistors R1 = 4.7 kΩ and R2 = 47 kΩ (R1 ≠ R2), −50 V VCEO, −100 mA IC, and 80 hFE at −10 mA/−5 V, used for level-shifting and load switching in automotive body control modules.
For engineers reviewing the DDTA143ZE-7 datasheet, DDTA143ZE-7 pinout, DDTA143ZE-7 application, or DDTA143ZE-7 equivalent, key selection criteria include verified input voltage thresholds (VI(ON) = −2.5 V @ IO = −5 mA), saturation performance (VCE(SAT) ≤ −0.3 V), AEC-Q101 qualification, and SOT523 thermal resistance (RθJA = 833 °C/W).
Technical Context
This device integrates two discrete resistors (R1 = 4.7 kΩ, R2 = 47 kΩ) directly into a PNP bipolar junction transistor die to provide fixed base biasing-eliminating external components while maintaining predictable turn-on/off behavior under varying supply conditions. Its complementary NPN counterpart is DDTC143ZE-7.
The resistor ratio (R2/R1 ≈ 10) sets a stable current gain bias point, enabling reliable digital switching with defined logic thresholds. It operates across −55 °C to +150 °C and meets AEC-Q101 stress testing for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - supports rail-to-rail switching in 24 V automotive systems with margin |
| IC(MAX) | −100 mA - suitable for driving LED indicators, relays, and small solenoids |
| R1 / R2 | 4.7 kΩ / 47 kΩ - provides fixed base current limiting and ensures consistent turn-on at −2.5 V input |
| hFE | 80 (min) @ −10 mA/−5 V - guarantees sufficient current amplification for low-power digital interface loads |
| VCE(SAT) | ≤ −0.3 V @ −5 mA - minimizes conduction loss and self-heating in always-on control paths |
| PD | 150 mW - defines maximum continuous power handling on FR4 PCB with standard pad layout |
| fT | 250 MHz - indicates usable bandwidth for fast edge transitions in PWM-driven loads |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic case (1.60 mm × 1.60 mm × 0.75 mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Output terminal / current sink | Connected to load ground or return path; carries full output current |
| 2 (Base) | Bias node / internal R1–R2 junction | Internally tied to R1 (4.7 kΩ) and R2 (47 kΩ); no external connection required |
| 3 (Collector) | Input terminal / high-side switch node | Connected to negative supply rail (e.g., −12 V or −24 V); switches load to ground |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 ≠ R2 bias network | Eliminates two external resistors and reduces PCB footprint by >40% vs discrete BJT + bias solution |
| AEC-Q101 qualified | Validated for automotive temperature cycling, humidity, and mechanical shock per JESD22 standards |
| SOT523 package | Enables high-density routing in space-constrained ECUs and sensor nodes |
| Halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive OEM environmental compliance requirements |
Applications
| Automotive Door Module | Industrial PLC Input Stage |
|---|---|
Use Scenario: Switching window lift motor enable signal in 12 V/24 V body control unit. IC Role / Device Role / Timing Role: PNP load switch controlling ground path of motor driver IC enable pin. Use Value: −2.5 V logic-compatible turn-on threshold ensures compatibility with MCU GPIOs and reduces need for level translators. | Use Scenario: Isolating 24 V DC field input signals from 3.3 V microcontroller I/O pins. IC Role / Device Role / Timing Role: Digital input buffer providing galvanic separation and current-limited sink capability. Use Value: Built-in 47 kΩ pull-up resistor (R2) enables direct connection to 24 V sources without external biasing. |
| LED Status Indicator | Smart Sensor Power Control |
Use Scenario: Driving red/green status LEDs on dashboard instrument clusters. IC Role / Device Role / Timing Role: Constant-current sink switch regulating LED brightness via PWM duty cycle. Use Value: VCE(SAT) ≤ −0.3 V ensures <10 mW dissipation per LED channel at 20 mA, minimizing thermal drift. | Use Scenario: Enabling/disabling power to MEMS pressure sensor in battery-powered telematics units. IC Role / Device Role / Timing Role: Low-leakage (IO(OFF) ≤ −0.5 µA) power gate for sensor subsystem sleep/wake control. Use Value: R2 = 47 kΩ provides high-impedance off-state, reducing quiescent current below 1 µA during deep sleep. |
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 | SOT323 package (larger footprint, RθJA = 430 °C/W), same R1/R2 values and electrical specs | Better thermal performance but occupies 3× more board area than SOT523 | Select when higher power dissipation (>100 mW continuous) is required and space permits |
| NSV143ZWT1G | Same SOT523 package, R1 = 4.7 kΩ, R2 = 47 kΩ, but only AEC-Q100 qualified (not Q101), fT = 200 MHz | Approved for infotainment systems but not under-hood engine control due to lower reliability grade | Select for cost-sensitive non-safety-critical interior modules where AEC-Q101 is not mandated |
Compared with DDTA143ZE-7, DDTA143ZM-7 trades miniaturization for thermal headroom, while NSV143ZWT1G offers identical form factor and biasing but lacks AEC-Q101 validation-making it unsuitable for safety-relevant automotive subsystems.
Availability
DDTA143ZE-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial I/O modules, LED lighting controls, and smart sensor power management requiring stable component supply and long-term lifecycle support.
Supply support for DDTA143ZE-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 and manufacturing operations across Asia and the Americas.
The DDTA series belongs to Diodes' automotive-qualified pre-biased transistor product line, engineered specifically for simplified digital interface design in harsh-environment control units where reliability, size, and assembly efficiency are critical.
FAQ
What is the maximum allowable collector-emitter voltage for DDTA143ZE-7?
The absolute maximum VCEO rating is −50 V. This value is tested and guaranteed per AEC-Q101 stress conditions and applies at TA = 25 °C. Derating is required above 25 °C per the power dissipation curve in DS30318 Rev. 9–2, Figure 1, where usable VCEO decreases linearly with ambient temperature rise.
Can DDTA143ZE-7 be used as a direct replacement for a discrete PNP BJT plus two external resistors?
Yes-DDTA143ZE-7 replaces a PNP transistor (e.g., MMBT3906) plus 4.7 kΩ and 47 kΩ base resistors. Its internal R1–R2 topology matches standard resistor-biased configurations, and pinout (E-B-C) aligns with common SOT523 PNP layouts. No layout change is needed beyond removing the two resistors.
Does DDTA143ZE-7 support 3.3 V logic-level input drive?
No-it requires ≥ −2.5 V input to reliably saturate (per VI(ON) spec at −5 mA). A 3.3 V MCU GPIO cannot directly drive it in active mode. Use with inverted logic (e.g., open-drain 3.3 V output pulled up to −12 V) or add an inverter stage to generate compatible negative-going control signals.
Is the SOT523 package lead-free and RoHS-compliant?
Yes-DDTA143ZE-7 is fully lead-free and compliant with EU RoHS Directive 2015/863/EU (RoHS 3). Its matte tin-plated terminals meet MIL-STD-202 Method 208 solderability requirements, and the molding compound is halogen- and antimony-free ("Green") with Br+Cl < 1500 ppm and Sb < 1000 ppm.
DDTA143ZE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- -
- Power - Max:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
DDTA143ZE-7 FAQ
1.How can I place an order for DDTA143ZE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA143ZE-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 DDTA143ZE-7 reliable?
The price and inventory of DDTA143ZE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA143ZE-7 is usually 5 days.
3.What payment methods are accepted for DDTA143ZE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA143ZE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA143ZE-7?
DDTA143ZE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA143ZE-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 DDTA143ZE-7?
For technical support, including DDTA143ZE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA143ZE-7 requirements.
6.How does Aetrix verify that DDTA143ZE-7 is sourced from the original manufacturer or authorized distributors?
All DDTA143ZE-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 DDTA143ZE-7 meets industry standards.
7.What is the process for return or replacement of DDTA143ZE-7?
All DDTA143ZE-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTA143ZE-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 DDTA143ZE-7 part is unused and in its original packaging.
Return procedure for DDTA143ZE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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