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Diodes Incorporated DDTC115TCA-7
- Part No.:
- DDTC115TCA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
DDTC115TCA-7.pdf
- Description:
- TRANS PREBIAS NPN 200MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,372
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Product details
Overview
DDTC115TCA-7 from Diodes Incorporated is an NPN pre-biased transistor in SOT23 package with a single built-in 100 kΩ bias resistor (R1 only), rated for VCEO = 50 V, IC(max) = 100 mA, and PD = 200 mW. It delivers hFE = 100–600 at IC = 1 mA / 5 mA and VCE(sat) ≤ 0.3 V at IC/IB = 0.5 mA / 0.05 mA, enabling compact logic-level switching in space-constrained digital interface circuits.
For engineers reviewing the DDTC115TCA-7 datasheet, DDTC115TCA-7 pinout, DDTC115TCA-7 application, or DDTC115TCA-7 equivalent, key selection criteria include its R1-only bias configuration, SOT23 thermal performance (RθJA = 625 °C/W), guaranteed hFE range across operating current, and suitability for low-power level-shifting and load switching where external base resistors are undesirable.
Technical Context
This device implements a monolithic NPN bipolar junction transistor with an integrated 100 kΩ base-emitter pull-up resistor (R1), eliminating the need for an external bias network. Its R1-only topology simplifies PCB layout and reduces component count in digital input conditioning and open-collector driver stages.
The SOT23 package supports surface-mount assembly with JEDEC-standard footprint and J-STD-020 Level 1 moisture sensitivity. Electrical behavior is characterized at TA = +25°C, with guaranteed operation from –55°C to +150°C and VCE(sat) validated under IC/IB = 0.5 mA / 0.05 mA test condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; sets safe operating range for 3.3 V/5 V logic-driven loads. |
| IC(max) | 100 mA - Continuous collector current limit; defines maximum switched load capacity without derating. |
| PD | 200 mW - Power dissipation on FR4 board; determines thermal headroom for sustained conduction at ambient temperature. |
| hFE | 100–600 - DC current gain range at IC = 1 mA / 5 mA; ensures reliable saturation across process and temperature variation. |
| VCE(sat) | ≤0.3 V at IC/IB = 0.5 mA / 0.05 mA - Low saturation voltage minimizes power loss and enables efficient low-voltage switching. |
| R1 | 100 kΩ ±30% - Integrated base resistor value; eliminates external component while defining base drive impedance for TTL/CMOS inputs. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with 3-pin configuration, 0.008 g mass, UL 94V-0 rating, and matte tin-plated leads compliant with MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitting terminal of NPN transistor | Reference node for bias resistor and output current return path; connected to ground or low-side reference in switch configurations. |
| 2 (Base) | Control terminal with internal R1 connection | Input node tied internally to 100 kΩ resistor; accepts logic-high signal to enable conduction without external pull-up. |
| 3 (Collector) | Current-sinking output terminal | Switched output node; connects to load and supply rail; sinks up to 100 mA when saturated. |
Key Features
| Feature | Design Value |
|---|---|
| R1-only bias network | Single 100 kΩ resistor integrated between base and emitter-reduces BOM count and layout area versus discrete resistor + transistor solutions. |
| SOT23 footprint compatibility | Standardized 3-pin outline with 2.9 mm × 1.3 mm body-enables drop-in replacement in existing designs using JEDEC SOT23 layouts. |
| Lead-free & halogen-free construction | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb)-supports environmentally compliant manufacturing. |
| Wide temperature operation | Rated from –55°C to +150°C-suitable for industrial control, automotive cabin modules, and outdoor electronics without derating. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving indicator LEDs from 3.3 V microcontroller outputs with current limiting via collector resistor. IC Role / Device Role / Timing Role: NPN switch providing low-side current sink for LED anode-to-VCC configuration. Use Value: Eliminates need for external base resistor; VCE(sat) ≤ 0.3 V ensures >90% LED forward voltage utilization at 5–20 mA. | Use Scenario: Extending limited GPIO count by enabling/disabling peripheral enable lines or reset signals. IC Role / Device Role / Timing Role: Digital buffer/level shifter translating 1.8 V or 3.3 V logic to 5 V tolerant or higher-voltage domains. Use Value: Guaranteed hFE ≥100 at IC = 1 mA ensures robust saturation even with weak MCU drive capability. |
| Logic-Level Translator | Low-Power Sensor Interface |
Use Scenario: Bidirectional level translation between mixed-voltage subsystems (e.g., 1.8 V sensor to 3.3 V host MCU). IC Role / Device Role / Timing Role: Active pull-down element in open-drain translator architecture with external pull-up. Use Value: R1-only design provides defined base impedance for predictable turn-on threshold and fast edge response. | Use Scenario: Enabling/disabling analog sensor power rails based on system sleep/wake state. IC Role / Device Role / Timing Role: Low-quiescent-current load switch controlling VCC to passive sensors or signal-conditioning ICs. Use Value: ICBO ≤ 0.5 μA and IEBO ≤ 0.5 μA minimize leakage-induced battery drain in always-on monitoring nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDTC114TCA-7-F | Integrated R1 = 10 kΩ (vs. 100 kΩ); hFE min = 60 at IC = 5 mA | Better suited for higher-drive applications requiring faster switching with lower base impedance | Select when driving heavier loads (>10 mA) or needing tighter VCE(sat) control at higher IC. |
| DDTC143TCA-7-F | Integrated R1 = 4.7 kΩ; hFE min = 100 at IC = 1 mA; VCE(sat) tested at IC/IB = 1 mA/0.1 mA | Optimized for medium-speed digital switching with stronger base drive and lower input impedance | Choose for improved noise immunity in noisy environments or when interfacing with slower logic families. |
Compared with DDTC114TCA-7-F and DDTC143TCA-7-F, DDTC115TCA-7 offers highest input impedance (100 kΩ R1), lowest base current demand, and best suitability for ultra-low-power wake-up detection and high-impedance logic interfaces-making it optimal where MCU GPIO drive strength is minimal and standby current must be minimized.
Availability
DDTC115TCA-7 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, logic-level translation, and low-power sensor interface applications requiring stable component supply and long-term production continuity.
Supply support for DDTC115TCA-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 DDTC (R1-ONLY SERIES) CA product line delivers pre-biased transistors optimized for digital interface, level-shifting, and load-switching functions in consumer, industrial, and automotive electronics-emphasizing simplicity, reliability, and compliance with environmental standards.
FAQ
What is the function of the built-in resistor in DDTC115TCA-7?
The DDTC115TCA-7 integrates a single 100 kΩ resistor (R1) between base and emitter, forming a fixed bias network that eliminates the need for an external pull-up resistor. This configuration allows direct connection to logic outputs, enabling predictable turn-on behavior with minimal external components while maintaining low quiescent current draw.
Is DDTC115TCA-7 qualified for automotive use?
No-DDTC115TCA-7 is not AEC-Q101 qualified. Only the DDTC143TCAQ variant in this series carries AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing certification. DDTC115TCA-7 is intended for industrial, consumer, and commercial applications where automotive-grade reliability is not required.
How does the SOT23 package affect thermal performance?
The SOT23 package has a thermal resistance of RθJA = 625 °C/W when mounted on an FR4 board with minimum recommended pad layout. This means a 200 mW power dissipation results in a 125°C junction-to-ambient rise above ambient temperature, necessitating careful layout with thermal pads or copper pour if operating near maximum ratings at elevated ambient temperatures.
Can DDTC115TCA-7 replace a standard NPN transistor plus external resistor?
Yes-DDTC115TCA-7 replaces a discrete NPN transistor and 100 kΩ base resistor in a single SOT23 package. It maintains identical electrical functionality but improves board density, reduces assembly steps, and ensures matched resistor tolerance (±30%) and temperature coefficient due to monolithic integration.
DDTC115TCA-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:
- -
DDTC115TCA-7 FAQ
1.How can I place an order for DDTC115TCA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC115TCA-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 DDTC115TCA-7 reliable?
The price and inventory of DDTC115TCA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC115TCA-7 is usually 5 days.
3.What payment methods are accepted for DDTC115TCA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC115TCA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC115TCA-7?
DDTC115TCA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC115TCA-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 DDTC115TCA-7?
For technical support, including DDTC115TCA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC115TCA-7 requirements.
6.How does Aetrix verify that DDTC115TCA-7 is sourced from the original manufacturer or authorized distributors?
All DDTC115TCA-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 DDTC115TCA-7 meets industry standards.
7.What is the process for return or replacement of DDTC115TCA-7?
All DDTC115TCA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC115TCA-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 DDTC115TCA-7 part is unused and in its original packaging.
Return procedure for DDTC115TCA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC115TCA-7 Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
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