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Diodes Incorporated DDA143TH-7
- Part No.:
- DDA143TH-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- SOT-563, SOT-666
- Datasheet:
-
DDA143TH-7.pdf
- Description:
- TRANS PREBIAS DUAL PNP SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
DDA143TH-7 from Diodes Incorporated is a PNP pre-biased dual small-signal transistor in SOT563 package, featuring integrated 4.7kΩ and 10kΩ bias resistors, −50V VCEO, −100mA IO, and AEC-Q101 qualification for automotive-grade reliability. It functions as a dual-channel logic-level switch in low-power interface circuits, commonly used in LED driver control and microcontroller I/O buffering.
For engineers reviewing the DDA143TH-7 datasheet, DDA143TH-7 pinout, DDA143TH-7 application, or DDA143TH-7 equivalent, key selection criteria include verified R1/R2 resistor values (4.7kΩ/10kΩ), guaranteed −100mA output current capability, −0.3V VCE(SAT) at −1mA/−0.1mA drive, hFE range of 100–600, and AEC-Q101 qualification status for automotive use cases.
Technical Context
This dual PNP transistor integrates two independent pre-biased elements sharing a common emitter configuration per channel, with separate base resistors enabling direct TTL/CMOS logic interfacing without external bias networks. Each channel supports −100mA continuous output current and exhibits −0.3V saturation voltage under specified drive conditions.
The device operates across −55°C to +150°C, features 833°C/W junction-to-ambient thermal resistance on FR4 board, and delivers 250MHz fT - confirming suitability for medium-speed switching (≤10 MHz) rather than RF amplification. Its −5V BVEBO rating limits base-emitter reverse tolerance, requiring careful input clamping in bidirectional signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50V - Withstands up to −50V collector-emitter voltage before breakdown, enabling use in 24V automotive supply rails with margin. |
| IO | −100mA - Maximum continuous output current per channel, sufficient for driving LEDs, relays, or logic inputs. |
| VCE(SAT) | −0.3V @ −1mA/−0.1mA - Low saturation voltage minimizes power loss and heat generation in switching applications. |
| hFE | 100–600 @ −1mA, −5V - Wide DC current gain range ensures reliable turn-on across process and temperature variation. |
| R1 / R2 | 4.7kΩ / 10kΩ - Precisely trimmed internal base resistors eliminate need for external bias components in digital interface designs. |
| fT | 250MHz - Confirms usable bandwidth for fast digital switching (e.g., PWM dimming up to ~5 MHz). |
| PD | 150mW - Power dissipation limit defines maximum simultaneous channel loading under ambient conditions. |
Pinout & Package
SOT563 surface-mount package: 6-pin, 2.2mm × 1.7mm footprint, 0.5mm pitch, matte tin-plated copper leadframe, UL 94V-0 rated mold compound, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter (Channel 1) | Common emitter node for first PNP transistor; tied internally to Pin 4 in dual-emitter configuration. |
| 2 | Base (Channel 1) | Connected to 4.7kΩ resistor (R1); accepts logic-level input to enable Channel 1. |
| 3 | Collector (Channel 1) | Output node for Channel 1; sinks current when active, compatible with open-collector loads. |
| 4 | Emitter (Channel 2) | Common emitter node for second PNP transistor; electrically tied to Pin 1. |
| 5 | Base (Channel 2) | Connected to 10kΩ resistor (R2); independently controlled input for Channel 2. |
| 6 | Collector (Channel 2) | Output node for Channel 2; fully isolated from Channel 1 collector, enabling dual independent switches. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics, ensuring reliability over extended temperature and lifetime cycles. |
| Integrated R1/R2 bias network | Eliminates four external resistors per dual channel, reducing PCB area by ≥2.5 mm² and assembly cost in high-volume consumer and automotive modules. |
| SOT563 ultra-small footprint | Enables dense integration in space-constrained applications such as infotainment button interfaces and sensor hub I/O expansion. |
| Green, halogen-free construction | Meets JESD204B environmental compliance requirements (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb), supporting RoHS 2 and ELV directives. |
Applications
| Automotive Door Module Switch Interface | Industrial PLC Digital Output Stage |
|---|---|
|
Use Scenario: Driving window lift motor enable signals and door lock actuator coils from MCU GPIOs in vehicle door control units. IC Role / Device Role: Dual-channel level-shifting and current-boosting switch translating 3.3V/5V logic into −12V/−24V load control. Use Value: Eliminates discrete resistor networks while maintaining AEC-Q101 compliance and −100mA per channel drive capability for solenoid activation. |
Use Scenario: Isolating and amplifying programmable logic controller outputs to drive 24V DC indicator lamps and pilot relays. IC Role / Device Role: Pre-biased PNP buffer providing galvanic separation between controller logic and field-side loads. Use Value: Reduces component count by 4 resistors per channel and ensures consistent −0.3V VCE(SAT) across temperature for stable lamp brightness control. |
| Consumer Appliance Display Backlight Control | Medical Infusion Pump Status Indicator |
|
Use Scenario: PWM-controlled current sinking for white LED strings in refrigerator display panels using 3.3V microcontroller outputs. IC Role / Device Role: Dual constant-current switch enabling independent brightness control of two LED zones. Use Value: Leverages 250MHz fT and tight R1/R2 tolerance to support 1–5 kHz PWM without distortion or shoot-through risk. |
Use Scenario: Driving bi-color status LEDs (red/green) in battery-powered infusion pump UIs where size and reliability are critical. IC Role / Device Role: Dual low-power PNP switch delivering precise −100mA peak current with minimal thermal rise in sealed enclosures. Use Value: SOT563 package and AEC-Q101 qualification provide traceable lifecycle management and long-term supply stability required for Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual pre-biased PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDA143EH-7 | Same R1/R2 (4.7kΩ/10kΩ), identical SOT563 package, but rated for −100mA IO and −30V VIN (vs. −5V for DDA143TH-7). | Supports higher input voltage swing (−30V), suitable for industrial analog input protection circuits where DDA143TH-7's −5V VIN limit is restrictive. | Select DDA143EH-7 when interfacing with ±15V analog circuitry; retain DDA143TH-7 for strictly logic-level (0/−5V) control with tighter input voltage constraints. |
| DDA114TH-7 | Same package and AEC-Q101 rating, but R1/R2 = 10kΩ/10kΩ and −100mA IO; lower input current (−0.88mA @ −5V) vs. DDA143TH-7's −3.6mA. | Better suited for high-impedance MCU outputs where base drive current must be minimized, at expense of slightly slower turn-on. | Choose DDA114TH-7 for ultra-low-power sleep-mode interfaces; prefer DDA143TH-7 when faster switching or stronger drive into capacitive loads is required. |
Compared with DDA143EH-7 and DDA114TH-7, DDA143TH-7 offers the optimal balance of strong base drive (−3.6mA), strict −5V input voltage limitation for logic compatibility, and AEC-Q101 assurance - making it preferred for automotive body-control modules with 3.3V/5V microcontrollers and defined input voltage rails.
Availability
DDA143TH-7 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC output stages, consumer appliance backlight drivers, and medical device status indicators requiring stable component supply and AEC-Q101 compliance.
Supply support for DDA143TH-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, specializing in high-reliability components for automotive, industrial, and computing markets since 1960.
The DDA series targets cost-sensitive, space-constrained digital interface applications requiring integrated biasing and automotive qualification - designed specifically to replace discrete transistor-resistor combinations in ECU, body electronics, and smart sensor subsystems.
FAQ
What is the maximum allowable input voltage (VIN) for DDA143TH-7?
The absolute maximum input voltage is −5V, as specified in the Electrical Characteristics table under "Input Voltage" for DDA143TH. Exceeding this value risks damaging the internal base-emitter junction. This limit reflects its optimization for 3.3V/5V logic interfacing, not general-purpose analog input use.
Can DDA143TH-7 drive a 24V relay coil directly?
No - DDA143TH-7 is a PNP current sink with −50V VCEO, but its output stage is rated for −100mA continuous current and −0.3V VCE(SAT). Most 24V relays require >50mA holding current, but inductive kickback and contact arcing necessitate external flyback diode and often a higher-voltage-rated transistor or dedicated driver IC.
Is the SOT563 package lead-free and RoHS compliant?
Yes - DDA143TH-7 is fully lead-free and RoHS 2 compliant (2011/65/EU), with matte tin annealed finish over copper leadframe, and classified as "Green" per Diodes Incorporated's definition: <900ppm bromine, <900ppm chlorine, and <1000ppm antimony compounds.
How does the dual-emitter configuration affect PCB layout?
Pins 1 and 4 are internally connected as a common emitter node. Layout must route both emitter traces to a single low-impedance ground plane node - splitting them causes imbalance, unequal current sharing, and potential thermal stress. Thermal relief pads are recommended due to the 833°C/W RθJA rating on FR4.
DDA143TH-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- 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:
- 150mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
DDA143TH-7 FAQ
1.How can I place an order for DDA143TH-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDA143TH-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 DDA143TH-7 reliable?
The price and inventory of DDA143TH-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDA143TH-7 is usually 5 days.
3.What payment methods are accepted for DDA143TH-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDA143TH-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDA143TH-7?
DDA143TH-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDA143TH-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 DDA143TH-7?
For technical support, including DDA143TH-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDA143TH-7 requirements.
6.How does Aetrix verify that DDA143TH-7 is sourced from the original manufacturer or authorized distributors?
All DDA143TH-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 DDA143TH-7 meets industry standards.
7.What is the process for return or replacement of DDA143TH-7?
All DDA143TH-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDA143TH-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 DDA143TH-7 part is unused and in its original packaging.
Return procedure for DDA143TH-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDA143TH-7 Tags
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SMUN5311DW1T1G
onsemi
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PUMH13,115
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PUMD12,115
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PUMH9,115
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DCX114EU-7-F
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PUMD13,115
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