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Diodes Incorporated DDA143TU-7-F
- Part No.:
- DDA143TU-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DDA143TU-7-F.pdf
- Description:
- TRANS 2PNP PREBIAS 0.2W SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:6,844
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Product details
Overview
DDA143TU-7-F from Diodes Incorporated is a PNP pre-biased dual transistor in SOT363 package, featuring integrated 4.7kΩ input bias resistor (R1), −50V VCEO, −100mA IO, and hFE of 100–250 at IC = −1mA. It functions as a compact, logic-compatible switch for low-power digital interface and level-shifting circuits in space-constrained industrial control modules.
For engineers reviewing the DDA143TU-7-F datasheet, DDA143TU-7-F pinout, DDA143TU-7-F application, or DDA143TU-7-F equivalent, this part supports fast-switching, low-input-current PNP switching with guaranteed saturation at IC/IB = −1mA/−0.1mA and VCE(sat) ≤ −0.3V - critical for 3.3V/5V microcontroller GPIO drive and open-collector signal conditioning.
Technical Context
This device integrates two identical PNP transistors with monolithic bias resistors on a single die, eliminating external base resistors and reducing PCB footprint. Each channel has independent emitter-base and collector-base junctions rated for −50V breakdown and operates within −55°C to +150°C ambient range.
The SOT363 package enables dual-channel operation in 2.15mm × 2.10mm area with 0.65mm lead pitch, supporting high-density routing. Thermal resistance RθJA is 625°C/W on FR-4 board, limiting continuous power dissipation to 200mW total (150mW per element).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50V - Ensures safe operation in 24V industrial bus interfaces with margin against transients. |
| IO | −100mA - Supports direct driving of small relays, LEDs, or logic inputs without external amplification. |
| VCE(sat) | ≤ −0.3V at IC/IB = −1mA/−0.1mA - Minimizes conduction loss and self-heating in always-on or pulsed switching. |
| hFE | 100–250 at IC = −1mA, VCE = −5V - Provides predictable current gain for stable biasing across temperature. |
| R1 | 4.7kΩ ±30% - Sets base current for reliable turn-on with 3.3V/5V logic high while limiting input current to ≤1mA. |
| PD | 200mW total - Constrains simultaneous dual-channel operation to ≤100mW per transistor under derated conditions. |
Pinout & Package
Package: SOT363 - 6-pin, surface-mount, dual-transistor outline with 0.65mm pitch, 2.15mm × 2.10mm body, and matte tin-plated leads compliant with MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of Transistor 1 | Common reference node for first PNP channel; tied to system ground or logic low rail. |
| 2 | Base of Transistor 1 | Connected internally to R1; accepts logic-level input to enable switching. |
| 3 | Collector of Transistor 1 | Output node sourcing current when active; connects to load anode or pull-up network. |
| 4 | Collector of Transistor 2 | Independent output node for second PNP channel; enables dual-signal control in one footprint. |
| 5 | Base of Transistor 2 | Internally biased via same R1 value; electrically isolated from Pin 2 but functionally matched. |
| 6 | Emitter of Transistor 2 | Second emitter terminal; may be tied separately or paralleled depending on circuit topology. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = 4.7kΩ | Eliminates two external resistors per channel, reducing BOM count and layout area by ≥30% vs discrete solutions. |
| −50V VCEO rating | Supports direct interfacing with 24V PLC I/O and automotive 12V systems without additional clamping. |
| SOT363 package | Enables dual-channel switching in <2.5mm² PCB area - ideal for wearables, sensor nodes, and modular I/O expanders. |
| AEC-Q101 qualified variant available | DDA143TUQ-7-F meets automotive stress testing requirements for under-hood and infotainment subsystems. |
Applications
| Industrial Digital I/O | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Isolating and level-shifting signals between 3.3V MCU GPIO and 24V field devices in programmable logic controllers. IC Role / Device Role / Timing Role: Dual PNP switch providing active-low output drive with built-in base bias for direct MCU connection. Use Value: Reduces component count by replacing two discrete transistors + four resistors with one SOT363 device, improving reliability and assembly yield. |
Use Scenario: Driving multiple LEDs or small solenoids from limited GPIO pins on ARM Cortex-M0+ microcontrollers. IC Role / Device Role / Timing Role: Current-sourcing switch enabling sink-type loads without external pull-ups or level translators. Use Value: Guarantees VCE(sat) ≤ −0.3V at 1mA base drive, minimizing voltage drop and ensuring full brightness or actuation at 3.3V supply. |
| Automotive Body Control | Consumer Appliance Interface |
|
Use Scenario: Controlling door lock actuators and interior lighting in AEC-Q101-compliant body control modules. IC Role / Device Role / Timing Role: Dual-channel load switch handling intermittent 100mA pulses with thermal stability up to +125°C ambient. Use Value: Qualified variant DDA143TUQ-7-F supports PPAP documentation and IATF 16949 traceability for Tier-1 production. |
Use Scenario: Managing status indicators and relay drivers in smart home hubs operating at 5V logic levels. IC Role / Device Role / Timing Role: Logic-compatible PNP buffer isolating MCU outputs from noisy AC-coupled loads. Use Value: Input voltage threshold VI(on) = −3.0V ensures clean turn-on with standard TTL/CMOS high outputs, avoiding partial conduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP pre-biased dual transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDA114TU-7-F | R1 = 10kΩ, hFE min 100 at IC = −10mA | Higher input impedance; suited for lower-drive GPIOs or battery-powered wake-up circuits | Select when base current must stay below 500μA at 5V input; less suitable for fast 10mA switching. |
| DDA123JU-7-F | R1 = 2.2kΩ, R2 = 47kΩ, VI(on) = −1.4V | Asymmetric biasing enables sharper turn-on; optimized for 1.8V–3.3V logic families | Prefer for ultra-low-voltage microcontrollers where −3.0V VI(on) of DDA143TU may cause marginal turn-on. |
Compared with DDA143TU-7-F, DDA114TU offers higher input impedance for reduced quiescent current, while DDA123JU provides asymmetric biasing for improved noise immunity at sub-3.3V logic levels - both require revalidation of VCE(sat) and thermal margins in existing layouts.
Availability
DDA143TU-7-F is available at Aetrix Electronics and suitable for industrial digital I/O, microcontroller GPIO expansion, and automotive body control applications requiring stable component supply and long-term manufacturability.
Supply support for DDA143TU-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 centers across Asia and manufacturing in IATF 16949-certified facilities.
This part belongs to the DDA-series pre-biased transistor family, engineered for space-constrained, high-reliability switching in industrial automation, automotive electronics, and consumer appliance control systems.
FAQ
What is the maximum continuous collector current per channel for DDA143TU-7-F?
The absolute maximum rated output current IO is −100mA per channel, but thermal limits constrain practical continuous operation. With 200mW total power dissipation and RθJA = 625°C/W, sustained current must remain below −60mA per channel at +85°C ambient to avoid exceeding 150°C junction temperature.
Can DDA143TU-7-F replace a discrete PNP transistor plus two base resistors?
Yes - it integrates two matched PNP transistors with 4.7kΩ input resistors (R1) in one SOT363 package. Each channel replaces one discrete MMBT3906 plus two 4.7kΩ resistors, reducing layout area by ~40% and eliminating solder joint variability associated with three discrete components.
Is DDA143TU-7-F suitable for automotive applications?
The standard DDA143TU-7-F is not AEC-Q101 qualified, but its automotive-grade counterpart DDA143TUQ-7-F is fully qualified, PPAP-capable, and manufactured in IATF 16949-certified facilities. Use the Q-suffix version for under-hood, lighting, or body control modules requiring automotive compliance.
What is the tolerance on the internal 4.7kΩ bias resistor?
The R1 resistor has a tolerance of ±30%, specified over temperature and process variation. This allows guaranteed turn-on with logic-high inputs ≥3.0V while maintaining IB ≤1mA at 5V - sufficient for robust switching without requiring tight resistor matching in most digital interface applications.
DDA143TU-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 PNP - Pre-Biased (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 50V
- Resistor - Base (R1):
- 4.7kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 2.5mA
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- 250MHz
- Power - Max:
- 200mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DDA143TU-7-F FAQ
1.How can I place an order for DDA143TU-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDA143TU-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 DDA143TU-7-F reliable?
The price and inventory of DDA143TU-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 DDA143TU-7-F is usually 5 days.
3.What payment methods are accepted for DDA143TU-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDA143TU-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDA143TU-7-F?
DDA143TU-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDA143TU-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 DDA143TU-7-F?
For technical support, including DDA143TU-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDA143TU-7-F requirements.
6.How does Aetrix verify that DDA143TU-7-F is sourced from the original manufacturer or authorized distributors?
All DDA143TU-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 DDA143TU-7-F meets industry standards.
7.What is the process for return or replacement of DDA143TU-7-F?
All DDA143TU-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDA143TU-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 DDA143TU-7-F part is unused and in its original packaging.
Return procedure for DDA143TU-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDA143TU-7-F Tags
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SMUN5311DW1T1G
onsemi
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UMH9NTN
Rohm Semiconductor
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PUMH13,115
Nexperia USA Inc.
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PUMD3-QX
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PUMD2,115
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RN4987FE,LF(CT
Toshiba Semiconductor and Storage
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PUMD12,115
Nexperia USA Inc.
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PUMD9,115
Nexperia USA Inc.
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PUMH9,115
Nexperia USA Inc.
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PUMD3,115
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DCX114EU-7-F
Diodes Incorporated
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PUMD13,115
Nexperia USA Inc.
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