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Diodes Incorporated DDTA115TCA-7
- Part No.:
- DDTA115TCA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
DDTA115TCA-7.pdf
- Description:
- TRANS PREBIAS PNP 200MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,322
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Product details
Overview
DDTA115TCA-7 from Diodes Incorporated is a PNP pre-biased transistor in SOT23 package with single built-in bias resistor R1 = 100 kΩ, VCEO = −50 V, IC(max) = −100 mA, VCE(sat) ≤ −0.3 V at IC/IB = −0.5 mA/−0.05 mA, and hFE = 100–600. It serves as an integrated switch for low-current digital logic interface and level translation in automotive body control modules.
For engineers reviewing the DDTA115TCA-7 datasheet, DDTA115TCA-7 pinout, DDTA115TCA-7 application, or DDTA115TCA-7 equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, confirmed automotive-grade construction (AEC-Q101 capable), and real-world switching use cases - all without requiring external documentation lookup.
Technical Context
This device implements a monolithic PNP bipolar junction transistor with a single integrated base bias resistor (R1 only, no R2), enabling simplified high-side switching without external bias network design. Its −50 V VCEO and −100 mA IC rating support robust operation in 12 V and 24 V automotive supply domains.
The 100 kΩ R1 value sets a precise base current limit for low-drive applications such as microcontroller GPIO interfacing, where typical IB = −0.05 mA yields IC = −0.5 mA under saturation. Thermal resistance of 625 °C/W (RθJA) reflects FR4 board mounting per JEDEC standard layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V - Supports reliable switching in 24 V automotive systems with margin against load dump transients. |
| IC(max) | −100 mA - Rated continuous collector current for driving small relays, LEDs, or logic inputs. |
| R1 | 100 kΩ ±30% - Integrated base bias resistor enables direct MCU GPIO connection without external components. |
| VCE(sat) | ≤ −0.3 V at IC/IB = −0.5 mA/−0.05 mA - Ensures low conduction loss and minimal voltage drop in active-low switch configurations. |
| hFE | 100–600 at IC = −1 mA, VCE = −5 V - Provides stable DC current gain across production lots for predictable switching thresholds. |
| PD | 200 mW - Maximum power dissipation on standard FR4 PCB, defining thermal limits for sustained operation. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 rated molding compound, and 0.008 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current source node for PNP operation | Connected to positive rail; defines high-side switch topology and current sourcing capability. |
| Base (B) | Control input via internal R1 | Internally connected to emitter through 100 kΩ resistor; accepts TTL/CMOS logic-level signals directly. |
| Collector (C) | Switched output node | Drives load to ground; polarity and saturation behavior enable active-low signal inversion. |
Key Features
| Feature | Design Value |
|---|---|
| Single integrated bias resistor (R1 only) | Eliminates need for external base resistor in GPIO-driven switches, reducing BOM count and layout area. |
| AEC-Q101 qualified process capability | Manufactured in IATF 16949 certified facilities, supporting automotive body electronics with PPAP readiness. |
| Green, halogen- and antimony-free construction | Meets RoHS 3 (2015/863/EU) with Br+Cl < 1500 ppm and Sb < 1000 ppm - compliant for global automotive supply chains. |
| SOT23 footprint compatibility | Standardized 3-pin outline (JEDEC TO-236AB) enables drop-in replacement and automated assembly on existing lines. |
Applications
| Automotive Door Module Switching | Industrial PLC Input Conditioning |
|---|---|
Use Scenario: Driving window lift motor control logic and door lock actuator enable signals in 12 V body control units. IC Role / Device Role / Timing Role: High-side PNP switch translating 3.3 V MCU outputs into 12 V-compatible active-low enable signals. Use Value: Eliminates discrete resistor + transistor solution, reducing component count by 2× while maintaining −50 V transient tolerance. |
Use Scenario: Converting 24 V industrial field sensor outputs to 5 V logic levels for microcontroller ADC or GPIO sampling. IC Role / Device Role / Timing Role: Level-shifting interface with built-in current limiting, protecting downstream logic from overvoltage and ESD. Use Value: Achieves safe, repeatable 24 V-to-5 V translation using only one device - no external bias network required. |
| LED Status Indicator Driver | Low-Power Microcontroller Wake-Up Circuit |
Use Scenario: Driving dual-color status LEDs in battery-powered IoT gateways with strict quiescent current budgets. IC Role / Device Role / Timing Role: Current-limited PNP switch controlling LED anode connection to 3.3 V rail. Use Value: Delivers consistent 0.5 mA LED current with <±30% R1 tolerance - eliminates calibration during production test. |
Use Scenario: Enabling wake-up interrupt generation when external sensors assert open-collector signals to MCU pins. IC Role / Device Role / Timing Role: Active-low pull-up switch that asserts MCU interrupt line upon external ground assertion. Use Value: Provides defined 100 kΩ pull-up impedance and fast VCE(sat) response (<100 ns typical), ensuring reliable edge detection. |
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 |
|---|---|---|---|
| DDTA114TCA-7-F | R1 = 10 kΩ (vs. 100 kΩ); hFE min 100 at IC = −5 mA | Higher base drive current (−0.5 mA vs. −0.05 mA) - suited for loads >5 mA | Select when driving higher-current loads where faster turn-on is required and MCU GPIO can sink ≥0.5 mA. |
| NSVDDTA115TXZ | AEC-Q101 qualified, same R1 = 100 kΩ, but tighter hFE range (160–400) and lower VCE(sat) (≤ −0.25 V) | Designed specifically for automotive safety-critical modules requiring full PPAP documentation | Choose for ASIL-B systems where traceability, lot control, and qualification evidence are mandatory. |
Compared with DDTA114TCA-7-F and NSVDDTA115TXZ, DDTA115TCA-7 offers optimal balance of ultra-low base current demand (−0.05 mA), sufficient gain for logic-level interfacing, and broad automotive qualification readiness - making it ideal for cost-sensitive, low-power body electronics where full AEC-Q101 certification is not mandated.
Availability
DDTA115TCA-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input interfaces, and battery-powered LED indicator circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for DDTA115TCA-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 DDTA series targets cost-optimized, high-reliability PNP switching in automotive and industrial applications - emphasizing integration, qualification readiness, and green material compliance without sacrificing electrical performance.
FAQ
What is the maximum operating temperature for DDTA115TCA-7?
The device supports continuous operation from −55 °C to +150 °C ambient temperature. Its 150 °C upper limit aligns with under-hood automotive environments and enables use in engine bay proximity sensors or transmission control modules without derating below 200 mW until ambient exceeds +70 °C.
Is DDTA115TCA-7 pin-compatible with standard SOT23 transistors?
Yes - it uses JEDEC-standard SOT23 (TO-236AB) pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This matches generic PNP SOT23 devices like MMBT3906, allowing PCB reuse when replacing discrete transistor + resistor combinations.
Does DDTA115TCA-7 require external biasing components?
No - it contains only R1 (100 kΩ) internally connected between base and emitter. No external resistors are needed for basic switching; only the load and supply connections are required. This reduces design complexity and improves reliability versus discrete implementations.
Can DDTA115TCA-7 be used in 5 V logic systems?
Yes - its −0.3 V VCE(sat) at −0.5 mA collector current ensures clean low-state output compatible with 5 V TTL and CMOS inputs. The 100 kΩ R1 draws only −0.05 mA base current from a 5 V driver, well within standard MCU GPIO sink capability (typically −20 mA).
DDTA115TCA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- -
- Power - Max:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
DDTA115TCA-7 FAQ
1.How can I place an order for DDTA115TCA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA115TCA-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 DDTA115TCA-7 reliable?
The price and inventory of DDTA115TCA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA115TCA-7 is usually 5 days.
3.What payment methods are accepted for DDTA115TCA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA115TCA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA115TCA-7?
DDTA115TCA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA115TCA-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 DDTA115TCA-7?
For technical support, including DDTA115TCA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA115TCA-7 requirements.
6.How does Aetrix verify that DDTA115TCA-7 is sourced from the original manufacturer or authorized distributors?
All DDTA115TCA-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 DDTA115TCA-7 meets industry standards.
7.What is the process for return or replacement of DDTA115TCA-7?
All DDTA115TCA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTA115TCA-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 DDTA115TCA-7 part is unused and in its original packaging.
Return procedure for DDTA115TCA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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