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Diodes Incorporated DDTA143ZCA-7-F
- Part No.:
- DDTA143ZCA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTA143ZCA-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,448
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Product details
Overview
DDTA143ZCA-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT23 package, featuring integrated R1 = 4.7kΩ and R2 = 47kΩ bias resistors, DC current gain (hFE) of 80 at IC = −10mA, VCE(sat) ≤ −0.3V, and −100mA maximum output current - used for digital switching in automotive body control modules and industrial I/O interface circuits.
For engineers reviewing the DDTA143ZCA-7-F datasheet, DDTA143ZCA-7-F pinout, DDTA143ZCA-7-F application, or DDTA143ZCA-7-F equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, real-world use cases in level-shifting and load switching, and two functionally comparable alternatives with documented resistor ratio and gain differences.
Technical Context
This device integrates a PNP bipolar junction transistor with two monolithically embedded bias resistors (R1 = 4.7kΩ, R2 = 47kΩ) to enable single-resistor drive logic-level input operation. It operates as a saturated switch with guaranteed turn-on at VIN ≤ −1.3V (IOUT = −5mA), and maintains VOUT(on) ≤ −0.3V under load.
The SOT23 package supports automated placement and reflow, with thermal resistance RθJA = 625°C/W on FR4 board and power dissipation limited to 200mW. Its −55°C to +150°C operating range meets industrial and automotive ambient requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50V - maximum collector-emitter voltage before breakdown; enables use in 24V automotive supply rails with margin. |
| IC(max) | −100mA - absolute max continuous collector current; suitable for driving LEDs, relays, or small solenoids. |
| hFE | 80 (min) at VCE = −5V, IC = −10mA - ensures reliable saturation with low base drive current. |
| R1 / R2 | 4.7kΩ / 47kΩ - fixed internal bias network enabling direct TTL/CMOS logic interface without external resistors. |
| VCE(sat) | ≤ −0.3V at IC = −5mA, IB = −0.25mA - minimizes conduction loss and self-heating in switching applications. |
| PD | 200mW - maximum power dissipation on standard FR4 PCB; defines thermal derating envelope for sustained operation. |
Pinout & Package
Package: SOT23 - surface-mount plastic package (2.9mm × 1.3mm × 1.0mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal of PNP transistor | Connected to higher potential rail (e.g., +12V); current flows out of this pin during conduction. |
| 2 (Base) | Input node tied to R1–R2 junction | Accepts logic-level input; internal resistive divider sets base current automatically when driven low. |
| 3 (Collector) | Collector terminal of PNP transistor | Connected to load; sinks current when transistor is ON; referenced to system ground or lower potential. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | R1 = 4.7kΩ, R2 = 47kΩ - eliminates need for external base resistors, reducing BOM count and layout area. |
| SOT23 footprint | Standardized 3-pin package - compatible with high-speed pick-and-place equipment and reflow soldering processes. |
| Automotive-grade construction | AEC-Q101 qualified option available - supports temperature-critical applications like door module actuators and lamp drivers. |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant - meets global environmental regulations without performance trade-offs. |
Applications
| Automotive Body Control | Industrial Digital I/O |
|---|---|
Use Scenario: Driving 12V incandescent lamps and small relays in vehicle door modules and seat control units. IC Role / Device Role / Timing Role: PNP load switch providing high-side current sink with logic-compatible input. Use Value: Eliminates discrete base resistor network, reduces PCB space by >30%, and ensures consistent turn-on across temperature (−40°C to +125°C). | Use Scenario: Level-shifting and interfacing 3.3V/5V microcontroller GPIOs to 24V PLC field inputs. IC Role / Device Role / Timing Role: Digital translator and current amplifier converting low-voltage logic signals into robust 24V-compatible outputs. Use Value: Delivers −100mA sink capability with <1.3V logic threshold, enabling direct connection to MCU pins without additional driver stages. |
| LED Signage Drivers | Appliance Power Sequencing |
Use Scenario: Controlling common-anode RGB LED strings in commercial signage systems. IC Role / Device Role / Timing Role: High-side constant-current switch managing individual color channel on/off states. Use Value: Maintains VCE(sat) ≤ −0.3V at −20mA, minimizing heat generation and enabling dense LED array layouts. | Use Scenario: Enabling/disabling auxiliary power rails (e.g., sensor bias, display backlight) in white goods control boards. IC Role / Device Role / Timing Role: Controlled power gate activated by main MCU during boot-up or fault recovery sequences. Use Value: Provides clean, resistorless switching with fast turn-off (toff < 100ns typical), preventing unintended power-up glitches. |
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 |
|---|---|---|---|
| DDTA123JCA-7-F | R1 = 2.2kΩ, R2 = 47kΩ; hFE = 80 min; VIN(on) = −1.1V @ −5mA | Lower input threshold enables use with weaker drive sources (e.g., open-drain I²C buffers) | Select when interfacing to low-drive-strength logic or requiring faster turn-on at marginal input voltages. |
| DDTA114YCA-7-F | R1 = 10kΩ, R2 = 47kΩ; hFE = 68 min; VIN(on) = −1.4V @ −1mA | Higher R1 reduces base current draw; optimized for ultra-low-power wake-up circuits | Select for battery-powered subsystems where input leakage must be <1μA and switching frequency is <10Hz. |
Compared with DDTA143ZCA-7-F, DDTA123JCA-7-F offers lower input turn-on voltage but higher base current consumption, while DDTA114YCA-7-F trades gain and speed for minimal input loading - choice depends on drive strength, power budget, and signal integrity requirements.
Availability
DDTA143ZCA-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance control boards requiring stable component supply and long-term manufacturability.
Supply support for DDTA143ZCA-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) CA pre-biased transistor family, engineered specifically for simplified digital switching in space-constrained, high-reliability applications where resistor-free logic interfacing is critical.
FAQ
What is the marking code for DDTA143ZCA-7-F on the SOT23 package?
The top-side marking for DDTA143ZCA-7-F is "P11", followed by a two-character date code (e.g., "M5" for May 2025). This matches the ordering information table in DS30334 Rev. 8-2, confirming traceability to Diodes' standardized SOT23 laser-marking scheme.
Can DDTA143ZCA-7-F replace a discrete PNP transistor plus two external resistors?
Yes - it replaces a standard PNP BJT (e.g., MMBT3906) plus 4.7kΩ and 47kΩ base bias resistors. The integrated R1–R2 network provides identical biasing behavior, with verified VIN(on) = −1.3V and IB = −0.25mA at IC = −5mA, eliminating layout variability and solder joint reliability risks.
Is DDTA143ZCA-7-F qualified for automotive applications?
While the base DDTA143ZCA-7-F is not AEC-Q101 certified, Diodes offers an automotive-grade variant (DDTA143ZCAQ-7-F) with PPAP documentation, IATF 16949 manufacturing, and full AEC-Q101 stress testing - contact Diodes or Aetrix for qualification status and change control support.
What is the thermal derating behavior above +25°C ambient?
Power dissipation must be linearly derated above +25°C at 0.32mW/°C (based on RθJA = 625°C/W). At +85°C ambient, maximum allowable PD drops to 128mW; at +125°C, it falls to 64mW - consistent with JEDEC J-STD-020 guidelines for SOT23 packages on standard FR4.
DDTA143ZCA-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTA143ZCA-7-F FAQ
1.How can I place an order for DDTA143ZCA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA143ZCA-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 DDTA143ZCA-7-F reliable?
The price and inventory of DDTA143ZCA-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 DDTA143ZCA-7-F is usually 5 days.
3.What payment methods are accepted for DDTA143ZCA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA143ZCA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA143ZCA-7-F?
DDTA143ZCA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA143ZCA-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 DDTA143ZCA-7-F?
For technical support, including DDTA143ZCA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA143ZCA-7-F requirements.
6.How does Aetrix verify that DDTA143ZCA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA143ZCA-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 DDTA143ZCA-7-F meets industry standards.
7.What is the process for return or replacement of DDTA143ZCA-7-F?
All DDTA143ZCA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA143ZCA-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 DDTA143ZCA-7-F part is unused and in its original packaging.
Return procedure for DDTA143ZCA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTA143ZCA-7-F Tags
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