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Diodes Incorporated DDTC114ECA-7
- Part No.:
- DDTC114ECA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC114ECA-7.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,837
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Product details
Overview
DDTC114ECA-7 from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT23 package with integrated bias resistors (R1 = R2 = 10 kΩ), rated for 50 V VCEO, 50 mA IC(max), and 200 mW power dissipation, used for level-shifting and digital switching in automotive control modules and industrial sensor interfaces.
For engineers reviewing the DDTC114ECA-7 datasheet, DDTC114ECA-7 pinout, DDTC114ECA-7 application, or DDTC114ECA-7 equivalent, key selection criteria include input voltage threshold (VIN(on) = 1.9 V typ), output saturation voltage (VCE(sat) = 0.1–0.3 V), DC current gain (hFE = 30 min), resistor tolerance (±30%), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device integrates two matched 10 kΩ bias resistors (R1 = R2) to configure a single-transistor inverter with fixed base biasing, eliminating external components for digital logic interfacing. It operates as a saturated switch with guaranteed turn-on at VIN ≥ 1.9 V (typ) and maintains VCE(sat) ≤ 0.3 V at IC = 10 mA / IB = 0.5 mA.
Designed for high-reliability environments, it meets AEC-Q101 stress testing requirements and supports operation from –55 °C to +150 °C. Its 625 °C/W junction-to-ambient thermal resistance assumes FR4 PCB mounting with minimum recommended pad layout per Diodes Inc. packaging guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; sets safe operating range in 24 V automotive and 36 V industrial supply rails. |
| IC(max) | 50 mA - Absolute maximum continuous collector current; defines upper limit for driving LEDs, relays, or logic inputs without derating. |
| R1 = R2 | 10 kΩ ±30% - Matched internal base bias resistors enabling single-resistor-free inverter configuration with predictable switching thresholds. |
| VCE(sat) | 0.1–0.3 V @ IC/IB = 10 mA/0.5 mA - Low saturation voltage ensures minimal power loss and compatible logic-low output for TTL/CMOS interfacing. |
| hFE | 30 min @ VCE = 5 V, IC = 5 mA - Minimum DC current gain guarantees reliable saturation under worst-case bias conditions. |
| PD | 200 mW - Maximum power dissipation on FR4 board; constrains duty cycle and ambient temperature in compact layouts. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package (2.9 mm × 1.3 mm × 1.0 mm), UL 94V-0 rated, moisture sensitivity level 1, 0.008 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for input bias network; connected to ground or low-side return path in inverter configuration. |
| 2 (Base) | Base connection point | Internal junction of R1 and R2; accepts digital input signal and provides bias current to enable transistor conduction. |
| 3 (Collector) | Collector terminal | Output node; sinks up to 50 mA when saturated; pulled high via external load resistor in open-collector inverter topology. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 10 kΩ matched resistors eliminate discrete bias components and reduce PCB footprint by ~30% vs. discrete BJT + resistors. |
| AEC-Q101 qualification | Validated for automotive applications including body control modules and sensor signal conditioning where extended temperature and reliability are mandatory. |
| Green compound construction | Halogen- and antimony-free molding compound (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb) meets global environmental compliance mandates. |
| SOT23 footprint compatibility | Standardized 3-pin SOT23 outline enables drop-in replacement with other pre-biased transistors (e.g., DDTA114ECA, MMBT2222A + resistors). |
Applications
| Automotive Door Module Switch Interface | Industrial PLC Input Isolation |
|---|---|
Use Scenario: Detecting mechanical switch closure in vehicle door latch assemblies using 12 V battery-supplied sensing circuitry. IC Role / Device Role / Timing Role: Acts as a level-shifting inverter to convert 12 V switch signals to 3.3 V/5 V logic-compatible outputs for microcontroller GPIOs. Use Value: Eliminates need for external pull-up/pull-down resistors and reduces component count while maintaining AEC-Q101 reliability across –40 °C to +125 °C ambient. | Use Scenario: Isolating 24 V field sensor inputs from 5 V PLC controller logic to prevent noise coupling and voltage mismatch. IC Role / Device Role / Timing Role: Functions as a saturated digital switch translating industrial voltage levels into clean CMOS-compatible logic states. Use Value: Delivers consistent VCE(sat) ≤ 0.3 V and fast turn-on (ton < 50 ns typical) without requiring gate drivers or optocouplers. |
| Consumer Appliance Motor Control Logic | Medical Diagnostic Equipment Signal Conditioning |
Use Scenario: Driving small brushed DC motors in smart home appliances using PWM-controlled I/O from an MCU with limited drive strength. IC Role / Device Role / Timing Role: Provides current amplification and voltage translation between low-power MCU outputs and motor driver stage inputs. Use Value: Enables direct interface with 3.3 V MCUs while sustaining 50 mA peak load current and dissipating only 15 mW at 10 mA IC. | Use Scenario: Converting analog sensor outputs (e.g., thermistor-based temperature readings) into digital presence/absence flags for safety-critical monitoring circuits. IC Role / Device Role / Timing Role: Serves as a precision comparator-like switch with defined VIN(on) = 1.9 V (typ) and tight resistor matching (ΔR2/R1 ≤ 1.2%). Use Value: Ensures repeatable switching thresholds across production lots and temperature ranges, supporting Class II medical device EMC and functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar pre-biased NPN transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDTC114YCA-7-F | R1 = R2 = 10 kΩ, same SOT23 package, but uses different die process resulting in higher hFE (min 50 vs. 30) and tighter resistor ratio (±1% vs. ±30%). | Preferred for precision threshold applications where gain stability over temperature is critical; not qualified to AEC-Q101. | Select when higher DC gain consistency is required and automotive qualification is not mandatory. |
| MMBT2222ALT1G | Standard NPN BJT without built-in resistors; requires two external 10 kΩ bias resistors; identical VCEO (50 V), IC(max) (600 mA), and SOT23 footprint. | Used where adjustable biasing or higher current capability is needed; lacks integrated resistor matching and AEC-Q101 validation. | Choose when design flexibility in bias network tuning outweighs component count reduction and automotive compliance needs. |
Compared with DDTC114ECA-7, DDTC114YCA-7-F offers superior gain consistency but no automotive qualification, while MMBT2222ALT1G provides higher current headroom and full bias adjustability at the cost of added components and no integrated reliability validation.
Availability
DDTC114ECA-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance control systems requiring stable component supply and long-term lifecycle support.
Supply support for DDTC114ECA-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The DDTC series belongs to Diodes' pre-biased transistor product line, engineered specifically to simplify digital interface design in space-constrained, high-volume applications requiring AEC-Q101 compliance and green manufacturing standards.
FAQ
What is the maximum operating temperature for DDTC114ECA-7?
The DDTC114ECA-7 is rated for junction and storage temperatures from –55 °C to +150 °C. Its thermal resistance (RθJA = 625 °C/W) assumes mounting on FR4 with Diodes Inc.'s recommended pad layout; actual max ambient depends on power dissipation and board thermal design.
Does DDTC114ECA-7 require external bias resistors?
No. The device integrates two matched 10 kΩ resistors (R1 = R2) internally, forming a complete inverter circuit with only three external connections: input to pin 2 (base), output from pin 3 (collector), and ground reference at pin 1 (emitter).
Is DDTC114ECA-7 suitable for 3.3 V logic interfacing?
Yes. With VIN(on) = 1.9 V (typ) and VCE(sat) ≤ 0.3 V at IC = 10 mA, it reliably switches on with standard 3.3 V CMOS/TTL outputs and delivers a valid logic-low level to downstream receivers.
What does the "-7" suffix indicate in DDTC114ECA-7?
The "-7" denotes a 7-inch tape-and-reel packaging format containing 3,000 units per reel, with 8 mm tape width and matte tin-plated leads compliant with MIL-STD-202, Method 208 for solderability.
DDTC114ECA-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):
- 10 kOhms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTC114ECA-7 FAQ
1.How can I place an order for DDTC114ECA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC114ECA-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 DDTC114ECA-7 reliable?
The price and inventory of DDTC114ECA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC114ECA-7 is usually 5 days.
3.What payment methods are accepted for DDTC114ECA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC114ECA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC114ECA-7?
DDTC114ECA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC114ECA-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 DDTC114ECA-7?
For technical support, including DDTC114ECA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC114ECA-7 requirements.
6.How does Aetrix verify that DDTC114ECA-7 is sourced from the original manufacturer or authorized distributors?
All DDTC114ECA-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 DDTC114ECA-7 meets industry standards.
7.What is the process for return or replacement of DDTC114ECA-7?
All DDTC114ECA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC114ECA-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 DDTC114ECA-7 part is unused and in its original packaging.
Return procedure for DDTC114ECA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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