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Diodes Incorporated DDTA115TCA-7-F
- Part No.:
- DDTA115TCA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTA115TCA-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
DDTA115TCA-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT23 package with integrated 100kΩ base bias resistor (R1 only), −50V VCEO, −100mA IC, 200mW power dissipation, and hFE of 100–600 at IC = −1mA. It enables compact, reliable switching in low-power digital interface and level-shifting circuits.
For engineers reviewing the DDTA115TCA-7-F datasheet, DDTA115TCA-7-F pinout, DDTA115TCA-7-F application, or DDTA115TCA-7-F equivalent, key selection criteria include verified R1-only bias topology, guaranteed VCE(sat) ≤ −0.3V at IC/IB = −0.5mA/−0.05mA, AEC-Q101 qualification status, SOT23 thermal resistance (625°C/W), and RoHS/Green compliance.
Technical Context
This device implements a single-PNP bipolar junction transistor with monolithically integrated base-emitter pull-up resistor (R1 = 100kΩ ±30%), eliminating external bias components. Its R1-only configuration supports fixed-gain switching where base current is derived solely from input voltage applied to the resistor terminal.
Designed for DC-coupled digital logic interfacing, it operates within −55°C to +150°C ambient range and delivers stable hFE across collector currents from 0.1mA to 10mA. The epitaxial planar die construction ensures consistent gain-bandwidth product (fT = 250MHz) and low output capacitance under reverse-biased conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50V - Supports rail-to-rail switching in 24V industrial control and 3.3V/5V logic-level translation without breakdown. |
| IC (max) | −100mA - Handles moderate load switching for LED drivers, relay coils, and small-signal MOSFET gate control. |
| R1 | 100kΩ ±30% - Enables direct connection to microcontroller GPIOs without external bias resistors; sets predictable base current for saturation. |
| VCE(sat) | ≤ −0.3V @ IC/IB = −0.5mA/−0.05mA - Ensures low conduction loss and minimal self-heating in always-on or pulsed switching modes. |
| hFE | 100–600 @ IC = −1mA, VCE = −5V - Provides wide gain margin for robust turn-on across temperature and process variation. |
| PD | 200mW @ TA = +25°C - Limits continuous power handling; requires derating above 25°C per 625°C/W θJA. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, 0.008g mass, UL 94V-0 rating, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current sink node | Connected to system ground or lower-potential rail; carries full collector current in active/saturation mode. |
| Base (B) | Bias input node | Internally connected to R1 top; accepts input signal to control transistor conduction; no external resistor required. |
| Collector (C) | Switched output node | Connected to load and positive supply; pulled low when saturated; open-circuit when off. |
Key Features
| Feature | Design Value |
|---|---|
| R1-only bias network | Integrated 100kΩ resistor eliminates discrete bias components, reducing BOM count and PCB area in GPIO-driven switches. |
| Epitaxial planar die | Ensures tight parameter distribution and repeatable hFE and VCE(sat) across production lots and temperature ranges. |
| AEC-Q101 qualified | Validated for automotive applications including body electronics and infotainment I/O conditioning where reliability and change control are mandatory. |
| Green / Halogen-free | Meets <900ppm Br, <900ppm Cl (<1500ppm Br+Cl), <1000ppm Sb - compliant with global environmental directives and end-of-life recycling requirements. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Driving indicator LEDs and solenoid feedback signals in door module PCBs with 12V supply and MCU GPIO interfacing. IC Role / Device Role / Timing Role: PNP switch enabling high-side sourcing of LED anodes and pull-up for open-collector sensor inputs. Use Value: Eliminates two external resistors per channel, reduces footprint by >30%, and maintains guaranteed VCE(sat) ≤ −0.3V across −40°C to +125°C. | Use Scenario: Level-shifting 24V field signals to 3.3V/5V logic inputs in modular I/O terminals. IC Role / Device Role / Timing Role: Voltage translator and current-limited interface buffer between industrial sensors and microcontroller ADC or GPIO pins. Use Value: Provides galvanic isolation via resistor-based input protection and ensures safe clamping at VEB ≤ −5V during transients. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Status Indication |
Use Scenario: Controlling power-enable lines for auxiliary rails (e.g., display backlight, fan controller) in smart home hubs. IC Role / Device Role / Timing Role: Low-power enable switch activated by system MCU to sequence power-up/down of subsystems. Use Value: Delivers stable hFE ≥100 at IC = −0.5mA, ensuring reliable turn-on even with aging GPIO drive strength. | Use Scenario: Driving multi-color status LEDs on patient monitor front panels with strict EMI and leakage current limits. IC Role / Device Role / Timing Role: Precision current source for LED brightness control using PWM-modulated base drive. Use Value: Maintains ≤0.5μA cutoff current (IEBO) at VEB = −4V, preventing false illumination during standby. |
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 = 10kΩ (vs. 100kΩ); same package, VCEO, IC, and hFE range | Higher base current draw - suitable for stronger GPIO drive or faster switching, but increases MCU loading | Select when driving higher-current loads (>5mA) or requiring faster turn-on time with available base drive headroom. |
| NSVDDTA115DXV6T1G | Same R1 = 100kΩ, AEC-Q101 qualified, but SOT-23-3L variant with tighter R1 tolerance (±20%) and lower VCE(sat) (−0.25V typ) | Optimized for automotive-grade designs requiring enhanced parametric consistency and lower conduction loss | Prefer for new automotive designs where tighter bias resistor matching and reduced thermal rise are critical. |
Compared with DDTA114TCA-7-F and NSVDDTA115DXV6T1G, DDTA115TCA-7-F offers the highest input impedance among R1-only PNP transistors in this family, minimizing MCU I/O loading while maintaining full compatibility with legacy SOT23 layouts and thermal profiles.
Availability
DDTA115TCA-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC digital input modules, and consumer appliance power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for DDTA115TCA-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.
The DDTA (R1-only series) CA product line delivers pre-biased PNP transistors optimized for space-constrained, cost-sensitive digital interface and level-shifting applications in automotive, industrial, and consumer systems.
FAQ
What is the function of the internal resistor in DDTA115TCA-7-F?
The internal 100kΩ resistor (R1) connects between base and emitter, forming a built-in pull-up that allows direct connection to a logic-low control signal. When the input is grounded, the transistor saturates; when open or pulled high, it remains off - eliminating need for external bias components and simplifying GPIO-driven switching.
Is DDTA115TCA-7-F qualified for automotive use?
Yes - DDTA115TCA-7-F is manufactured in IATF 16949 certified facilities and meets AEC-Q101 stress test requirements for reliability in automotive environments. It supports operating temperatures from −40°C to +125°C and is PPAP-capable for Tier 1 supplier documentation.
How does DDTA115TCA-7-F differ from DDTA115TKA-7-F?
DDTA115TCA-7-F uses a standard SOT23 package with matte tin plating and is RoHS/Green compliant. DDTA115TKA-7-F is identical electrically but features lead-free matte tin over nickel plating for enhanced corrosion resistance and solderability in high-reliability applications - confirmed in Diodes' DS30335 Rev. 8-2 documentation.
Can DDTA115TCA-7-F replace a discrete PNP transistor plus base resistor?
Yes - it replaces a standard PNP BJT (e.g., MMBT3906) and its series base resistor in one SOT23 footprint. Verified layout compatibility and identical pinout (E-B-C) allow drop-in replacement, reducing component count, assembly steps, and potential solder joint failures in high-volume production.
DDTA115TCA-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- DDTA (R1-ONLY SERIES) CA
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 100µA, 1mA
- Current - Collector Cutoff (Max):
- 500nA (ICBO)
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTA115TCA-7-F FAQ
1.How can I place an order for DDTA115TCA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA115TCA-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 DDTA115TCA-7-F reliable?
The price and inventory of DDTA115TCA-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 DDTA115TCA-7-F is usually 5 days.
3.What payment methods are accepted for DDTA115TCA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA115TCA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA115TCA-7-F?
DDTA115TCA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA115TCA-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 DDTA115TCA-7-F?
For technical support, including DDTA115TCA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA115TCA-7-F requirements.
6.How does Aetrix verify that DDTA115TCA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA115TCA-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 DDTA115TCA-7-F meets industry standards.
7.What is the process for return or replacement of DDTA115TCA-7-F?
All DDTA115TCA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA115TCA-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 DDTA115TCA-7-F part is unused and in its original packaging.
Return procedure for DDTA115TCA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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