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Diodes Incorporated DDTC113TCA-7
- Part No.:
- DDTC113TCA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC113TCA-7.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,983
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Product details
Overview
DDTC113TCA-7 from Diodes Incorporated is an NPN pre-biased transistor in SOT23 package with single built-in bias resistor (R1 = 1 kΩ), VCEO = 50 V, IC(max) = 100 mA, VCE(sat) ≤ 0.3 V at IC/IB = 10 mA/1 mA, and hFE = 100–250. It serves as a compact, lead-free switching element in low-power digital interface and level-shifting circuits.
For engineers reviewing the DDTC113TCA-7 datasheet, DDTC113TCA-7 pinout, DDTC113TCA-7 application, or DDTC113TCA-7 equivalent, this page delivers verified electrical parameters, SOT23 terminal mapping, real-world use cases in logic interfacing and LED drive, and validated alternative parts with documented R1 tolerance and hFE variance.
Technical Context
This device integrates a single 1 kΩ base bias resistor (R1 only, no R2), enabling simplified NPN switching without external bias network. Its epitaxial planar construction ensures stable gain and low leakage across -55°C to +150°C operating range.
Designed for discrete logic-level translation and load switching, it operates with VEB(max) = 5 V and exhibits fT = 250 MHz - confirming suitability for medium-speed digital signal routing where propagation delay and saturation voltage are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - supports rail-to-rail switching in 3.3 V and 5 V logic systems with margin against transients. |
| IC(max) | 100 mA - sufficient for driving small-signal loads including LEDs, relays, and gate inputs. |
| VCE(sat) | ≤ 0.3 V at IC/IB = 10 mA/1 mA - minimizes power loss and self-heating in saturated switch mode. |
| hFE | 100–250 at IC = 1 mA, VCE = 5 V - enables predictable current amplification with moderate variation across production lots. |
| R1 | 1 kΩ ±30% - sets base current for reliable turn-on while accommodating process drift without external trimming. |
| PD | 200 mW on FR4 board - defines maximum continuous dissipation under standard PCB layout conditions. |
Pinout & Package
Package: SOT23 - surface-mount, 3-terminal plastic package with 0.008 g mass, UL 94V-0 rating, and matte tin-plated leads solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for current flow; connected to ground or low-side return path in common-emitter configuration. |
| 2 (Base) | Input control node | Connected internally to R1; accepts TTL/CMOS logic-level input to enable transistor conduction. |
| 3 (Collector) | Output current sink | Drives load between VCC and collector; handles up to 100 mA with <0.3 V drop when saturated. |
Key Features
| Feature | Design Value |
|---|---|
| Single integrated bias resistor (R1) | Eliminates need for external base resistor, reducing BOM count and PCB footprint in high-volume logic interface designs. |
| Lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU; no intentionally added lead, bromine <900 ppm, antimony <1000 ppm. |
| Ambient temperature range | -55°C to +150°C operation - supports deployment in industrial control, automotive under-hood modules, and outdoor electronics. |
| Moisture sensitivity level | Level 1 per J-STD-020 - allows unlimited floor life before reflow, simplifying manufacturing handling and storage. |
Applications
| Logic Level Translation | LED Driver Circuit |
|---|---|
|
Use Scenario: Interfacing 3.3 V microcontroller GPIO to 5 V peripheral input requiring higher threshold voltage. IC Role / Device Role / Timing Role: NPN switch configured as active-low level shifter with fixed R1 bias ensuring consistent turn-on at 3.3 V logic high. Use Value: Eliminates need for dual-supply translators or voltage dividers; achieves <100 ns propagation delay with <0.3 V saturation drop. |
Use Scenario: Driving indicator LEDs in battery-powered IoT sensor nodes with tight power budget. IC Role / Device Role / Timing Role: Constant-current switch controlling LED anode connection to VCC, emitter grounded via current-limiting resistor. Use Value: Delivers stable 10–20 mA LED current with <5% variation across temperature due to hFE stability and low VCE(sat). |
| Microcontroller I/O Expansion | Relay Coil Driver |
|
Use Scenario: Expanding GPIO count of ARM Cortex-M0+ MCU by adding discrete output buffers for sensor enable lines. IC Role / Device Role / Timing Role: Digital output buffer with 100 mA sink capability, driven directly from 3.3 V GPIO without series resistor. Use Value: Reduces system cost vs. dedicated I/O expander IC; supports simultaneous activation of up to four 20 mA loads. |
Use Scenario: Driving 12 V, 40 mA relay coil from low-voltage MCU output in HVAC control panel. IC Role / Device Role / Timing Role: Low-side switch with flyback diode protection, using internal R1 to set base current for full saturation. Use Value: Ensures relay pull-in within 2 ms and maintains <0.3 V dropout during sustained 40 mA coil current. |
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 |
|---|---|---|---|
| DDTC123TCA-7 | R1 = 2.2 kΩ ±30%, hFE = 600–630 at IC = 5 mA - higher gain but lower base drive current. | Better suited for low-drive GPIOs (e.g., 1.8 V logic) where base current must be minimized. | Select when driving from weak-sourcing outputs or when tighter VCE(sat) control at lower IB is required. |
| NSV113T1T1G | Same R1 = 1 kΩ, but AEC-Q101 qualified and rated for 150°C junction - wider automotive temp range. | Approved for under-hood automotive modules; includes PPAP documentation support not available for DDTC113TCA-7. | Choose for automotive OEM programs requiring IATF 16949 traceability and extended thermal validation. |
Compared with DDTC123TCA-7 and NSV113T1T1G, DDTC113TCA-7 offers optimal balance of drive strength (10 mA/1 mA test condition), cost, and industrial-grade reliability - making it ideal for non-automotive embedded systems where 1 kΩ bias and 100 mA sink are primary requirements.
Availability
DDTC113TCA-7 is available at Aetrix Electronics and suitable for logic level translation, LED driver circuits, and microcontroller I/O expansion requiring stable component supply, consistent R1 tolerance, and RoHS-compliant packaging.
Supply support for DDTC113TCA-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.
This part belongs to the DDTC (R1-only series) pre-biased transistor family, engineered specifically for space-constrained digital interface applications where simplified biasing and guaranteed saturation performance are essential.
FAQ
What is the function of the internal resistor in DDTC113TCA-7?
The internal 1 kΩ resistor (R1) connects between the base and input terminal, providing automatic bias current to turn on the NPN transistor when a logic-high voltage is applied. This eliminates the need for an external base resistor, reducing component count and PCB area in digital switching applications.
Is DDTC113TCA-7 suitable for automotive applications?
No - DDTC113TCA-7 is not AEC-Q101 qualified. For automotive use, Diodes offers the DDTC143TCAQ variant (AEC-Q101 qualified, PPAP capable, manufactured in IATF 16949 facilities) or the NSV113T1T1G, which shares identical R1 value and extends junction temperature rating to 150°C.
How does the ±30% R1 tolerance affect circuit design?
The ±30% R1 tolerance means base current can vary from ~0.7 mA to ~1.3 mA at 1 V input, resulting in corresponding hFE-dependent collector current spread. Designers must verify worst-case saturation (VCE(sat)) at minimum hFE and maximum R1 to ensure reliable turn-on across temperature and process corners.
Can DDTC113TCA-7 replace a standard 2N3904 with external bias resistors?
Yes - in common-emitter switching configurations where the base is driven directly from a logic output, DDTC113TCA-7 replaces both the 2N3904 and its series base resistor. However, it cannot replicate adjustable bias or multi-resistor networks (e.g., voltage divider bias), limiting use to fixed-gain, digital on/off applications.
DDTC113TCA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 1 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 1mA, 10mA
- 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
DDTC113TCA-7 FAQ
1.How can I place an order for DDTC113TCA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC113TCA-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 DDTC113TCA-7 reliable?
The price and inventory of DDTC113TCA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC113TCA-7 is usually 5 days.
3.What payment methods are accepted for DDTC113TCA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC113TCA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC113TCA-7?
DDTC113TCA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC113TCA-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 DDTC113TCA-7?
For technical support, including DDTC113TCA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC113TCA-7 requirements.
6.How does Aetrix verify that DDTC113TCA-7 is sourced from the original manufacturer or authorized distributors?
All DDTC113TCA-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 DDTC113TCA-7 meets industry standards.
7.What is the process for return or replacement of DDTC113TCA-7?
All DDTC113TCA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC113TCA-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 DDTC113TCA-7 part is unused and in its original packaging.
Return procedure for DDTC113TCA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC113TCA-7 Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
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DTC114EKAT146
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DDTD113ZC-7-F
Diodes Incorporated
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PDTC143ET,215
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PDTC143XT,215
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MMUN2211LT1G
onsemi
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