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Diodes Incorporated DDA144EU-7
- Part No.:
- DDA144EU-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DDA144EU-7.pdf
- Description:
- TRANS 2PNP PREBIAS 0.2W SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:5,540
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Product details
Overview
DDA144EU-7 from Diodes Incorporated is a PNP pre-biased dual transistor in SOT363 package, configured as two matched PNP transistors with integrated 47 kΩ base bias resistors (R1 = R2 = 47 kΩ) per channel. It delivers −30 mA output current per element, −0.3 V VCE(sat) at −2.5 mA/−0.25 mA drive, and operates across −55 °C to +150 °C - used for compact logic-level signal inversion and load switching in space-constrained industrial control modules.
For engineers reviewing the DDA144EU-7 datasheet, DDA144EU-7 pinout, DDA144EU-7 application, or DDA144EU-7 equivalent, this part serves as a drop-in replacement for discrete PNP+resistor networks in level-shifting, LED driver enable stages, and microcontroller I/O buffering where guaranteed turn-on/off thresholds and thermal stability are required.
Technical Context
This dual PNP transistor integrates two identical epitaxial planar die elements in a single SOT363 package, each with monolithically embedded 47 kΩ input resistors (R1 and R2) connected between base and emitter, enabling direct TTL/CMOS-compatible interface without external bias components. The device supports rail-to-rail input voltage swing from −40 V to +10 V per channel.
Each transistor exhibits −50 V VCBO/VCEO, −0.3 V typical saturation voltage at −2.5 mA collector current, and DC current gain (hFE) of 100–250 at −1 mA/−5 V - optimized for low-power switching rather than linear amplification. Thermal resistance is 625 °C/W on FR-4 board with minimum pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Withstands up to −50 V collector-emitter reverse bias, suitable for 24 V industrial bus interfacing with margin. |
| IO (per element) | −30 mA - Delivers reliable switching current for driving small relays, LEDs, or logic inputs without external current limiting. |
| VCE(sat) | −0.3 V max at IC/IB = −2.5 mA/−0.25 mA - Ensures minimal conduction loss and predictable low-side pull-down behavior. |
| R1 / R2 | 47 kΩ ±30% - Integrated bias resistors eliminate two external components per channel and ensure matched turn-on thresholds. |
| PD (total) | 200 mW - Maximum power dissipation across both elements; limits continuous operation to ≤−30 mA per channel at ambient ≤+70 °C. |
| TJ Range | −55 °C to +150 °C - Qualified for under-hood automotive and industrial environments with no derating up to +125 °C. |
Pinout & Package
Package: SOT363 - 6-pin, surface-mount plastic package with 0.65 mm pitch, matte tin-plated leads, moisture sensitivity level 1, and UL 94V-0 flammability rating. Weight ≈ 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter 1 | Common emitter node for first PNP transistor; connects to system ground or negative rail in high-side switch configuration. |
| 2 | Base 1 | Input node for first transistor; internally tied to 47 kΩ resistor (R1) to Emitter 1 - accepts logic-high (≥−1.9 V) to activate. |
| 3 | Collector 1 | Output node for first transistor; sinks current when active - used for driving loads referenced to positive supply. |
| 4 | Collector 2 | Output node for second transistor; electrically isolated from Collector 1 - enables independent dual-channel switching. |
| 5 | Base 2 | Input node for second transistor; internally tied to 47 kΩ resistor (R2) to Emitter 2 - matches timing and threshold of Pin 2. |
| 6 | Emitter 2 | Common emitter node for second PNP transistor; may be tied to Pin 1 for shared emitter or left separate for isolated operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias resistors (R1 = R2 = 47 kΩ) | Eliminates need for four external resistors in dual-PNP buffer design, reducing BOM count and PCB area by ≥30%. |
| Matched dual-element topology | Guarantees consistent VBE, hFE, and switching delay between channels - critical for synchronized enable/disable in dual-rail systems. |
| AEC-Q101 qualified variant available (DDA144EUQ) | Supports automotive-grade reliability requirements including PPAP documentation and IATF 16949 manufacturing traceability. |
| Green, halogen-free, RoHS-compliant construction | Meets EU Directive 2015/863/EU with <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - compliant for medical and consumer safety-critical designs. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
|
Use Scenario: Driving 24 V solenoid valves and indicator LEDs from 3.3 V/5 V microcontroller GPIOs in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Dual-channel level-shifting switch providing isolated sink paths for two independent loads with fixed turn-on threshold. Use Value: Reduces component count by replacing two discrete PNP transistors + four bias resistors; maintains <1 µs propagation delay matching across channels. |
Use Scenario: Enabling CAN transceiver standby mode and controlling interior lighting dimming signals in BCM modules. IC Role / Device Role / Timing Role: Dual PNP switch managing power-gating and signal inversion for low-current auxiliary functions. Use Value: AEC-Q101-qualified variants (DDA144EUQ) support automotive qualification; −55 °C to +150 °C range ensures operation in engine bay proximity. |
| Consumer Appliance Control Board | Medical Infusion Pump Interface |
|
Use Scenario: Interfacing microcontroller outputs to relay drivers and buzzer circuits in washing machine main control boards. IC Role / Device Role / Timing Role: Logic-level translator and current amplifier for driving inductive and capacitive loads with controlled rise/fall times. Use Value: Integrated 47 kΩ resistors guarantee consistent turn-on voltage (VIN(on) = −1.9 V), eliminating variability from hand-soldered discrete resistors. |
Use Scenario: Isolating microcontroller I/O from motor driver enable lines and alarm tone generators in Class II medical devices. IC Role / Device Role / Timing Role: Safety-isolated switching element with verified creepage/clearance via SOT363 package and green molding compound. Use Value: Halogen- and antimony-free construction meets IEC 60601-1 material restrictions; 200 mW total dissipation supports continuous duty cycle in sealed enclosures. |
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 |
|---|---|---|---|
| DDA124EU-7-F | R1 = R2 = 22 kΩ (vs. 47 kΩ), lower input impedance, higher base current draw (−0.88 mA at −5 V). | Better suited for faster switching with higher drive capability but increased power consumption in battery-powered systems. | Select when faster turn-on time (<100 ns) is prioritized over quiescent current minimization. |
| DDA114YU-7-F | Asymmetric bias: R1 = 10 kΩ, R2 = 47 kΩ - enables mixed-mode operation (e.g., one channel high-speed, one channel low-power). | Used where one output requires aggressive drive while the other needs leakage-limited standby behavior. | Choose only when asymmetric channel requirements exist; not a direct functional replacement for DDA144EU-7. |
Compared with DDA124EU-7-F and DDA114YU-7-F, DDA144EU-7 offers balanced 47 kΩ biasing for optimal trade-off between input sensitivity and standby current - ideal for general-purpose dual-channel logic interfacing where consistency matters more than speed or asymmetry.
Availability
DDA144EU-7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and medical infusion pump interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for DDA144EU-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.
The DDA series targets cost-sensitive, space-constrained applications requiring integrated biasing - designed specifically for replacing discrete PNP transistor + resistor combinations in logic interfacing, load switching, and signal conditioning circuits.
FAQ
Is DDA144EU-7 pin-compatible with DDA124EU-7-F?
Yes - both share identical SOT363 pinout (Emitter1/Base1/Collector1/Collector2/Base2/Emitter2) and mechanical footprint. However, DDA144EU-7 uses 47 kΩ internal resistors versus 22 kΩ in DDA124EU-7-F, resulting in lower base current draw and slower turn-on. Electrical substitution requires verification of input drive strength and timing margins.
What is the maximum safe operating current per channel?
The absolute maximum rated output current is −30 mA per channel, but sustained operation above −20 mA requires thermal derating beyond +70 °C ambient due to the 200 mW total power limit and 625 °C/W junction-to-ambient thermal resistance. At 25 °C, −30 mA is permissible if duty cycle remains ≤50%.
Does DDA144EU-7 support automotive qualification?
The base DDA144EU-7 is not AEC-Q101 qualified, but its automotive-grade variant DDA144EUQ-7-F is fully qualified, PPAP-capable, and manufactured in IATF 16949-certified facilities. DDA144EUQ shares identical electrical specs and pinout but includes enhanced traceability and change control for automotive use.
Can Pins 1 and 6 be shorted for common-emitter configuration?
Yes - Pins 1 (Emitter1) and 6 (Emitter2) may be externally connected to implement a shared-emitter dual-switch configuration. This is electrically valid and commonly used in dual-load enable circuits. No internal connection exists between them; external tie ensures matched thermal and electrical behavior.
DDA144EU-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):
- 47kOhms
- Resistor - Emitter Base (R2):
- 47kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 68 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250MHz
- Power - Max:
- 200mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DDA144EU-7 FAQ
1.How can I place an order for DDA144EU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDA144EU-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 DDA144EU-7 reliable?
The price and inventory of DDA144EU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDA144EU-7 is usually 5 days.
3.What payment methods are accepted for DDA144EU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDA144EU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDA144EU-7?
DDA144EU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDA144EU-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 DDA144EU-7?
For technical support, including DDA144EU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDA144EU-7 requirements.
6.How does Aetrix verify that DDA144EU-7 is sourced from the original manufacturer or authorized distributors?
All DDA144EU-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 DDA144EU-7 meets industry standards.
7.What is the process for return or replacement of DDA144EU-7?
All DDA144EU-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDA144EU-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 DDA144EU-7 part is unused and in its original packaging.
Return procedure for DDA144EU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDA144EU-7 Tags
-
SMUN5311DW1T1G
onsemi
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UMH9NTN
Rohm Semiconductor
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PUMH13,115
Nexperia USA Inc.
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PUMD3-QX
Nexperia USA Inc.
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PUMD2,115
Nexperia USA Inc.
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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.
-
PUMH9,115
Nexperia USA Inc.
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PUMD3,115
Nexperia USA Inc.
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DCX114EU-7-F
Diodes Incorporated
-
PUMD13,115
Nexperia USA Inc.
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