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Diodes Incorporated DDTA144WCA-7
- Part No.:
- DDTA144WCA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
DDTA144WCA-7.pdf
- Description:
- TRANS PREBIAS PNP 200MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:593
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Product details
Overview
DDTA144WCA-7 from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT23 package, featuring integrated R1=47kΩ and R2=22kΩ bias resistors. It delivers -30mA max output current, -0.3V saturation voltage at -2mA load, and DC current gain of 56 at -10mA collector current. Used for discrete logic-level switching in automotive body control modules.
For engineers reviewing the DDTA144WCA-7 datasheet, DDTA144WCA-7 pinout, DDTA144WCA-7 application, or DDTA144WCA-7 equivalent, key selection criteria include input voltage threshold (-4.0V @ -2mA), resistor tolerance (±30% R1, ±20% R2/R1 ratio), thermal resistance (625°C/W), and AEC-Q101 qualification status for automotive use.
Technical Context
This device implements a monolithic PNP bipolar junction transistor with two on-die biasing resistors (R1 connected base-emitter, R2 base-collector) to eliminate external components in digital switching circuits. Its -4.0V input turn-on threshold and -0.3V VCE(sat) enable direct interfacing with 3.3V/5V microcontroller GPIOs driving inductive loads.
The SOT23 package supports automated placement and provides 200mW power dissipation capability at +25°C ambient. Thermal performance is defined by 625°C/W junction-to-ambient resistance under standard FR4 PCB mounting conditions with minimum pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -50V - Maximum allowable collector-emitter voltage before breakdown |
| IC(max) | -100mA - Absolute maximum continuous collector current rating |
| VCE(sat) | -0.3V @ -2mA - Low saturation voltage ensures minimal power loss in switching mode |
| hFE | 56 @ -10mA - Confirmed DC current gain determines base drive requirements |
| R1 / R2 | 47kΩ / 22kΩ - Precise internal bias network eliminates need for external resistors |
| PD | 200mW - Power handling limit under specified PCB thermal conditions |
| fT | 250MHz - Gain-bandwidth product indicates suitability for moderate-speed digital switching |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with 3-pin configuration, 0.008g weight, UL 94V-0 flammability rating, and matte tin-plated leads compliant with MIL-STD-202 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal of PNP transistor | Connected to higher potential supply rail; current flows out of this pin during conduction |
| 2 (Base) | Base node with internal R1–R2 bias network | Input control terminal; R1 connects to emitter, R2 connects to collector for self-biasing |
| 3 (Collector) | Collector terminal of PNP transistor | Connected to load; sinks current when transistor is active, referenced to system ground |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias resistors | R1 = 47kΩ ±30%, R2 = 22kΩ ±30%, ratio tolerance ±20% - reduces BOM count and PCB area |
| Automated assembly compatibility | SOT23 footprint with J-STD-020 Level 1 moisture sensitivity - enables high-yield pick-and-place manufacturing |
| AEC-Q101 qualification | Qualified for automotive applications per AEC-Q101 Rev H - supports under-hood and body electronics deployment |
| Green compound construction | Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb) - meets global environmental compliance mandates |
Applications
| Automotive Door Lock Actuator Control | Industrial PLC Digital Output Module |
|---|---|
Use Scenario: Driving solenoid-based door lock actuators in vehicle body control units using 3.3V MCU GPIOs. IC Role / Device Role / Timing Role: PNP switch providing high-side current sinking path for 12V actuator coil. Use Value: -4.0V input threshold ensures reliable turn-on from 3.3V logic; -0.3V VCE(sat) minimizes heat generation during sustained activation. | Use Scenario: Isolating and amplifying digital outputs from industrial programmable logic controllers to drive 24V relay coils. IC Role / Device Role / Timing Role: Discrete logic-level translator and current buffer between low-voltage controller and high-voltage load. Use Value: Integrated R1/R2 eliminates external biasing components; AEC-Q101 qualification supports extended temperature operation in factory environments. |
| Consumer Appliance Motor Driver Stage | Medical Infusion Pump Valve Control |
Use Scenario: Controlling small DC brush motors in smart home appliances such as HVAC dampers or coffee grinders. IC Role / Device Role / Timing Role: Final-stage switching element enabling PWM-controlled motor speed regulation. Use Value: 250MHz fT supports clean switching up to ~10kHz PWM frequencies; SOT23 footprint allows dense board layout. | Use Scenario: Activating precision solenoid valves in battery-powered infusion pumps requiring low standby current and predictable turn-off behavior. IC Role / Device Role / Timing Role: Low-leakage, fast-turnoff switching device controlling fluid flow timing. Use Value: -0.5μA IC(off) at -50V VCE ensures valve remains closed during sleep mode; RoHS/Green compliance meets medical device material restrictions. |
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 |
|---|---|---|---|
| DDTA144VCA-7-F | R1=47kΩ, R2=10kΩ; higher R2/R1 ratio yields lower input current (-0.16mA vs -0.16mA) but reduced noise immunity | Better suited for ultra-low-power sleep-mode interfaces where input leakage dominates | Select when minimizing input current is critical and noise margin is less constrained |
| DDTC144WCA-7-F | NPN complement; same R1/R2 values but opposite polarity; requires inverted logic drive | Used in low-side switching configurations where load connects to VCC, not ground | Choose for complementary designs needing matched bias networks across PNP/NPN pairs |
Compared with DDTA144VCA-7-F and DDTC144WCA-7-F, DDTA144WCA-7 offers balanced input threshold (-4.0V) and noise margin for standard 3.3V/5V logic interfacing, while maintaining compatibility with existing NPN/PNP dual-rail driver layouts.
Availability
DDTA144WCA-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and medical device valve control requiring stable component supply and long-term lifecycle support.
Supply support for DDTA144WCA-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 the DDTA (R1≠R2 SERIES) CA pre-biased transistor family, engineered specifically for simplified digital interface design in automotive, industrial, and consumer systems where space, reliability, and qualification compliance are critical.
FAQ
What is the maximum operating temperature range for DDTA144WCA-7?
The DDTA144WCA-7 is rated for operation from -55°C to +150°C, meeting AEC-Q101 temperature requirements for automotive under-hood applications. This range applies to both junction and storage conditions, verified per JEDEC JESD22-A103 and JESD22-A108 test standards.
Does DDTA144WCA-7 require external bias resistors?
No. DDTA144WCA-7 integrates R1 = 47kΩ and R2 = 22kΩ on-die bias resistors, eliminating the need for external components in standard digital switching configurations. The resistor tolerances (±30% R1, ±20% R2/R1 ratio) are characterized and guaranteed per DS30334 Rev. 8-2.
Is DDTA144WCA-7 qualified for automotive applications?
Yes. DDTA144WCA-7 is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. It supports PPAP documentation and change control processes required for automotive electronics, including body control modules and lighting systems.
How does the SOT23 package affect thermal performance?
The SOT23 package delivers 200mW power dissipation at +25°C ambient with 625°C/W junction-to-ambient thermal resistance when mounted on FR4 PCB using Diodes' recommended minimum pad layout. Derating is required above +25°C per the thermal curve in DS30334 Rev. 8-2 page 4.
DDTA144WCA-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:
- -
DDTA144WCA-7 FAQ
1.How can I place an order for DDTA144WCA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA144WCA-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 DDTA144WCA-7 reliable?
The price and inventory of DDTA144WCA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA144WCA-7 is usually 5 days.
3.What payment methods are accepted for DDTA144WCA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA144WCA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA144WCA-7?
DDTA144WCA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA144WCA-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 DDTA144WCA-7?
For technical support, including DDTA144WCA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA144WCA-7 requirements.
6.How does Aetrix verify that DDTA144WCA-7 is sourced from the original manufacturer or authorized distributors?
All DDTA144WCA-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 DDTA144WCA-7 meets industry standards.
7.What is the process for return or replacement of DDTA144WCA-7?
All DDTA144WCA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTA144WCA-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 DDTA144WCA-7 part is unused and in its original packaging.
Return procedure for DDTA144WCA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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