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Diodes Incorporated DDA143TU-7
- Part No.:
- DDA143TU-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DDA143TU-7.pdf
- Description:
- TRANS 2PNP PREBIAS 0.2W SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:6,050
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Product details
Overview
DDA143TU-7 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 signal-level translation in space-constrained PCBs.
For engineers reviewing the DDA143TU-7 datasheet, DDA143TU-7 pinout, DDA143TU-7 application, or DDA143TU-7 equivalent, this device is selected for discrete switching where built-in biasing eliminates external resistors, reduces BOM count, and ensures consistent turn-on behavior across temperature in industrial control I/O and automotive body electronics.
Technical Context
This dual PNP transistor integrates two identical pre-biased elements sharing common emitter terminals (pins 3 & 6), each with a dedicated 4.7kΩ base resistor (R1) and no R2 - confirmed by "R1 Only" designation and electrical specs listing only ΔR1 tolerance (±30%). Its −50V breakdown ratings and −100mA output current support robust operation in 24V industrial bus interfaces and 12V automotive load switching.
The device operates with VCE(sat) ≤ −0.3V at IC/IB = −1mA/−0.1mA, enabling low-loss switching in active-low configurations. Its fT = 250MHz (measured at VCE = −10V, IE = −5mA) indicates suitability for moderate-speed digital edge detection and pulse conditioning-not RF or high-frequency amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50V: Maximum collector-emitter voltage before breakdown; supports 24V system rails with 100% margin. |
| IO | −100mA: Continuous output current per channel; sufficient for driving LEDs, small relays, or logic inputs. |
| R1 | 4.7kΩ ±30%: Integrated base bias resistor; eliminates need for external pull-up/pull-down in open-collector applications. |
| VCE(sat) | ≤ −0.3V at IC/IB = −1mA/−0.1mA: Ensures minimal power loss and reliable logic-low output under load. |
| hFE | 100–250 at IC = −1mA, VCE = −5V: Predictable DC gain enables stable switching thresholds without gain-dependent timing drift. |
| PD | 200mW total: Power dissipation limit per package; requires thermal pad layout per Diodes' SOT363 recommendation. |
| TJ | −55°C to +150°C: Extended junction temperature range confirms suitability for under-hood automotive and industrial environments. |
Pinout & Package
Package: SOT363 - 6-pin, surface-mount, lead-free, green molded plastic (UL 94V-0), 0.006g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base of Transistor 1 | Connected internally to 4.7kΩ resistor (R1); accepts logic-level input for channel 1. |
| 2 | Collector of Transistor 1 | Active-low switched output node; sinks up to −100mA when transistor is on. |
| 3 | Emitter of Transistor 1 | Common emitter terminal tied to ground or reference rail; shared with pin 6. |
| 4 | Base of Transistor 2 | Connected internally to second 4.7kΩ resistor (R1); independent logic input for channel 2. |
| 5 | Collector of Transistor 2 | Second active-low switched output; electrically isolated from pin 2 but shares emitter. |
| 6 | Emitter of Transistor 2 | Common emitter terminal (same net as pin 3); enables dual-channel sink configuration with single return path. |
Key Features
| Feature | Design Value |
|---|---|
| Pre-biased dual PNP topology | Reduces component count by integrating two matched 4.7kΩ base resistors-no external bias network required. |
| SOT363 footprint | Enables dual-channel switching in <2.2mm × 2.2mm area-ideal for dense I/O expansion modules and automotive junction boxes. |
| AEC-Q101 qualified variant available (DDA143TUQ) | Validated for automotive use with PPAP capability and IATF 16949 manufacturing-supports Tier-1 body control module designs. |
| Green, halogen/antimony-free construction | Meets RoHS 3 (2015/863/EU) and JEDEC J-STD-020 Level 1 moisture sensitivity-enables lead-free reflow without baking. |
| −50V VCEO rating | Provides immunity to transients in 24V industrial systems (e.g., CAN bus nodes, PLC outputs) without external clamping. |
Applications
| Industrial Digital I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Adding 2-channel low-side switch capability to a microcontroller-based I/O expander board operating at 24V supply. IC Role / Device Role / Timing Role: Dual PNP pre-biased transistor acting as logic-level compatible sink driver for solenoid valves and indicator LEDs. Use Value: Eliminates four external 4.7kΩ resistors and saves 3.5mm² PCB area versus discrete transistor+resistor solutions. |
Use Scenario: Driving door lock actuators and interior lighting loads in a vehicle body control unit with 12V battery supply. IC Role / Device Role / Timing Role: Dual-channel active-low switch providing controlled current sinking with built-in bias stability over −40°C to +125°C ambient. Use Value: Enables AEC-Q101-compliant design using DDA143TUQ variant without redesigning bias network for temperature drift compensation. |
| PLC Input Signal Conditioning | Consumer Appliance Control Board |
Use Scenario: Converting 24V field sensor signals into clean 3.3V/5V logic levels for an ARM Cortex-M4-based programmable logic controller. IC Role / Device Role / Timing Role: Level-shifting interface with integrated pull-down bias, used in optocoupler input stage front-end. Use Value: Maintains consistent VCE(sat) ≤ −0.3V across temperature, ensuring reliable logic-low recognition even at 85°C ambient. |
Use Scenario: Controlling bi-color status LEDs and buzzer drivers on a smart washing machine main control board. IC Role / Device Role / Timing Role: Dual low-side switch managing LED polarity reversal and audible alert activation via shared emitter configuration. Use Value: Shared emitter (pins 3 & 6) allows single ground return path, simplifying routing and reducing trace inductance in noisy motor-drive environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDA114TU-7-F | 10kΩ R1 (vs. 4.7kΩ), higher VI(on) (−3.0V vs. −1.4V), same SOT363 package and −50V rating. | Better suited for 5V logic systems requiring higher input threshold; less sensitive to noise than DDA143TU-7. | Select when interfacing with 5V CMOS outputs needing tighter noise margin; avoid if driving from 3.3V GPIO. |
| DDA123JU-7-F | 2.2kΩ R1 + 47kΩ R2 (dual-resistor topology), lower VI(on) (−1.1V), same −100mA IO and SOT363. | Supports active-high input configuration via R2 feedback; enables voltage-divider bias for analog-sensing applications. | Choose when input signal lacks defined logic polarity or requires adjustable turn-on threshold via external R2 tap. |
Compared with DDA114TU-7-F and DDA123JU-7-F, DDA143TU-7 offers optimal balance of input sensitivity (−1.4V VI(on)) and noise immunity for 3.3V microcontroller I/O, while its single-R1 architecture simplifies layout versus dual-resistor variants.
Availability
DDA143TU-7-F is available at Aetrix Electronics and suitable for industrial digital I/O expansion, automotive body control modules, and PLC input signal conditioning requiring stable component supply, full RoHS compliance, and SOT363 footprint consistency.
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, specializing in high-reliability components for industrial, automotive, and computing markets since 1959.
This part belongs to Diodes' DDA-series pre-biased transistor family, engineered specifically for reducing design complexity in logic-level interfacing and low-power switching applications where resistor integration improves yield and thermal performance.
FAQ
What is the maximum continuous current per channel for DDA143TU-7?
The absolute maximum output current per channel is −100mA, verified per Absolute Maximum Ratings table in DS30346 Rev. 14-2. This rating assumes proper PCB thermal relief (FR-4 with minimum recommended pad layout) and ambient temperature ≤ +25°C. Derating applies above 25°C per Fig. 1 (Power Dissipation vs. Ambient Temperature).
Does DDA143TU-7 include a second bias resistor (R2)?
No. DDA143TU-7 is explicitly designated "R1 Only" in the Mechanical Data and Ordering Information tables. It contains only one 4.7kΩ internal base resistor per channel (R1), with no R2 connection - confirmed by schematic symbol showing R1 only and absence of R2 values in its row of the R1/R2 parameter table.
Can DDA143TU-7 be used in automotive applications?
Yes - the automotive-qualified variant DDA143TUQ-7-F is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. While DDA143TU-7-F itself is not automotive-qualified, its identical die and package enable direct drop-in replacement in non-safety-critical prototypes or cost-sensitive consumer-tier automotive subsystems.
What is the typical VCE(sat) at IC = −50mA?
Per Figure 3 (Typical VCE(sat) vs. Collector Current), VCE(sat) is ≤ −0.25V at IC = −50mA and TA = +25°C, with IB/IC = 0.1. This value remains within −0.3V limit across −55°C to +125°C, supporting stable low-loss switching in thermally demanding environments.
DDA143TU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 500nA
- Frequency - Transition:
- 250MHz
- Power - Max:
- 200mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DDA143TU-7 FAQ
1.How can I place an order for DDA143TU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDA143TU-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 DDA143TU-7 reliable?
The price and inventory of DDA143TU-7 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 is usually 5 days.
3.What payment methods are accepted for DDA143TU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDA143TU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDA143TU-7?
DDA143TU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDA143TU-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 DDA143TU-7?
For technical support, including DDA143TU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDA143TU-7 requirements.
6.How does Aetrix verify that DDA143TU-7 is sourced from the original manufacturer or authorized distributors?
All DDA143TU-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 DDA143TU-7 meets industry standards.
7.What is the process for return or replacement of DDA143TU-7?
All DDA143TU-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDA143TU-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 DDA143TU-7 part is unused and in its original packaging.
Return procedure for DDA143TU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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