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Diodes Incorporated DDTA115EE-7-F
- Part No.:
- DDTA115EE-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTA115EE-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:6,694
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Product details
Overview
DDTA115EE-7-F from Diodes Incorporated is a 50V PNP pre-biased transistor in SOT523 package with integrated bias resistors R1 = R2 = 100kΩ, designed for digital switching and level translation in low-power logic interfaces. It delivers -20mA max output current, -0.3V saturation voltage at -1mA load, and DC current gain of -82 at VO = -5V, IO = -5mA. Used in portable battery-powered microcontroller I/O conditioning.
For engineers reviewing the DDTA115EE-7-F datasheet, DDTA115EE-7-F pinout, DDTA115EE-7-F application, or DDTA115EE-7-F equivalent, key selection criteria include input voltage range (-40V to +10V), guaranteed -0.15mA input current at VI = -5V, thermal resistance (833°C/W), and AEC-Q101 qualification readiness for automotive signal conditioning.
Technical Context
This device integrates a PNP bipolar transistor with two matched 100kΩ bias resistors (R1 = R2) in a single SOT523 package, forming an inverter circuit where Pin 1 is input, Pin 2 is emitter (GND reference), and Pin 3 is collector/output. It operates as a digital switch with defined turn-on/off thresholds and fixed current gain.
The internal resistor ratio tolerance is tightly controlled at 0.8–1.2%, ensuring consistent switching behavior across production lots. Its 250MHz gain-bandwidth product supports high-speed digital transitions up to ~10MHz edge rates under typical loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50V - Maximum allowable collector-emitter voltage before breakdown; sets safe operating margin for 3.3V/5V logic rail interfacing. |
| R1 = R2 | 100kΩ ±30% - Matched on-die bias resistors enabling self-contained switching without external components. |
| IO(max) | -20mA - Maximum sink current capability; sufficient for driving LED indicators or small logic loads. |
| VCE(sat) | -0.3V @ IO = -1mA - Low saturation voltage ensures minimal power loss and reliable logic-low assertion. |
| GL | -82 - DC current gain at VO = -5V, IO = -5mA; guarantees stable switching with margin against temperature drift. |
| PD | 150mW - Power dissipation limit on FR-4 board; defines maximum continuous load under ambient conditions. |
| fT | 250MHz - Transistor-only gain-bandwidth; supports fast edge response in digital control paths. |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 0.75 mm), JEDEC-compliant, moisture sensitivity level 1, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (Base Bias Node) | Connects to internal R1–R2 junction; accepts TTL/CMOS-compatible logic signals with defined VIN(on)/VIN(off) thresholds. |
| 2 | Emitter | Common GND reference terminal; ties internally to emitter of PNP transistor and one end of both bias resistors. |
| 3 | Collector/Output | Active-low output node; sinks current when input is asserted, delivering logic-level inversion with defined saturation voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 100kΩ matched resistors eliminate need for external base resistors, reducing BOM count and PCB area by >30%. |
| Epitaxial planar die construction | Enables tight parameter distribution and stable performance over -55°C to +150°C operating range. |
| AEC-Q101 readiness | Qualified to JEDEC high-reliability standards; supports automotive signal conditioning with PPAP-capable manufacturing. |
| Green, halogen-free packaging | Meets RoHS 3 (2015/863/EU) and IATF 16949 requirements; <900ppm Br, <900ppm Cl, <1000ppm Sb. |
Applications
| Microcontroller GPIO Level Shifting | LED Driver Interface |
|---|---|
Use Scenario: Converting 3.3V MCU output to drive 5V-tolerant peripherals while maintaining logic inversion. IC Role / Device Role / Timing Role: Digital inverter with built-in biasing; replaces discrete transistor + two resistors. Use Value: Reduces component count by 3× and layout area by 40% versus discrete solution, with guaranteed VIN(on) ≤ -1.9V. | Use Scenario: Driving low-current indicator LEDs from battery-powered sensor nodes. IC Role / Device Role / Timing Role: Constant-current sink switch; enables direct connection to LED anode via pull-up resistor. Use Value: Delivers precise -1mA sink current at VO = -0.3V, minimizing power loss and extending coin-cell battery life. |
| Automotive Door Module Input Conditioning | Industrial Sensor Signal Inversion |
Use Scenario: Debouncing and translating mechanical switch inputs in vehicle door control units. IC Role / Device Role / Timing Role: ESD-hardened digital buffer with defined input hysteresis and AEC-Q101-aligned reliability. Use Value: Withstands -40V transient input and operates reliably from -40°C to +125°C, meeting ISO 16750-2 pulse test requirements. | Use Scenario: Inverting analog comparator outputs before feeding to PLC input modules. IC Role / Device Role / Timing Role: Fast-response logic inverter with 250MHz fT, supporting sub-100ns edge transitions. Use Value: Ensures clean signal edges with <50ns propagation delay, eliminating metastability in 10kHz industrial control loops. |
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 |
|---|---|---|---|
| DDTA144EE-7-F | R1 = R2 = 47kΩ; higher input current (-0.36mA @ VI = -5V); lower DC gain (-68). | Better suited for faster switching with heavier loads (>5mA), but less efficient for ultra-low-power sensor nodes. | Select when driving moderate-current loads where speed outweighs quiescent current savings. |
| DDTA124EE-7-F | R1 = R2 = 22kΩ; input current -0.88mA @ VI = -5V; gain -56; higher power dissipation per switch cycle. | Optimized for legacy 5V logic families requiring stronger base drive; not ideal for modern 1.8V/3.3V systems. | Choose for compatibility with older industrial controllers using 5V CMOS/TTL output stages. |
Compared with DDTA144EE-7-F and DDTA124EE-7-F, DDTA115EE-7-F offers the lowest input current (-0.15mA) and highest DC gain (-82), making it optimal for battery-constrained, low-noise digital interface applications where static power minimization is critical.
Availability
DDTA115EE-7-F is available at Aetrix Electronics and suitable for microcontroller GPIO conditioning, LED driver interfaces, automotive door module input conditioning, and industrial sensor signal inversion requiring stable component supply and long-term lifecycle support.
Supply support for DDTA115EE-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) EE family of pre-biased transistors, engineered specifically for space-constrained, low-power digital switching in portable, automotive, and industrial control applications.
FAQ
What is the absolute maximum input voltage rating for DDTA115EE-7-F?
The absolute maximum input voltage (Pin 1 to Pin 2) is -40V to +10V, as specified in the Absolute Maximum Ratings table. This range accommodates transient overvoltage events in automotive environments and ensures robust operation when interfacing with mixed-voltage logic families, including 3.3V, 5V, and 12V systems.
Does DDTA115EE-7-F require external bias resistors?
No. DDTA115EE-7-F integrates two matched 100kΩ bias resistors (R1 = R2) internally, eliminating the need for external base resistors. This simplifies design, reduces PCB footprint, and improves consistency across production units compared to discrete transistor + resistor solutions.
Is DDTA115EE-7-F qualified for automotive use?
While not fully AEC-Q101 certified out-of-box, this part is manufactured in IATF 16949-certified facilities and qualified to JEDEC high-reliability standards referenced in AEC-Q. Diodes states that automotive-grade versions with full PPAP documentation are available upon request for qualified programs.
What is the thermal resistance (RθJA) of DDTA115EE-7-F on a standard FR-4 board?
The junction-to-ambient thermal resistance is 833°C/W when mounted on an FR-4 PCB with minimum recommended pad layout. This value assumes no copper pour or thermal vias; adding thermal relief pads or ground-plane connections can reduce effective RθJA by up to 30% in production layouts.
DDTA115EE-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- 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):
- 100 kOhms
- Resistor - Emitter Base (R2):
- 100 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 82 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 5mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 150 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
DDTA115EE-7-F FAQ
1.How can I place an order for DDTA115EE-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA115EE-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 DDTA115EE-7-F reliable?
The price and inventory of DDTA115EE-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 DDTA115EE-7-F is usually 5 days.
3.What payment methods are accepted for DDTA115EE-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA115EE-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA115EE-7-F?
DDTA115EE-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA115EE-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 DDTA115EE-7-F?
For technical support, including DDTA115EE-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA115EE-7-F requirements.
6.How does Aetrix verify that DDTA115EE-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA115EE-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 DDTA115EE-7-F meets industry standards.
7.What is the process for return or replacement of DDTA115EE-7-F?
All DDTA115EE-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA115EE-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 DDTA115EE-7-F part is unused and in its original packaging.
Return procedure for DDTA115EE-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTA115EE-7-F Tags
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MUN5211T1G
onsemi
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DTC114EKAT146
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PDTC143XT,215
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MMUN2211LT1G
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