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Diodes Incorporated DDTC123ECAQ-7-F
- Part No.:
- DDTC123ECAQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC123ECAQ-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,505
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Product details
Overview
DDTC123ECAQ-7-F from Diodes Incorporated is an AEC-Q101-qualified NPN pre-biased small-signal transistor in SOT23 package, featuring integrated bias resistors R1 = R2 = 2.2 kΩ, VCEO = 50 V, IC(max) = 100 mA, and DC current gain (hFE) ≥20 at IC = 20 mA. It serves as a compact, automotive-grade digital switch in low-power logic interface and LED driver circuits.
For engineers reviewing the DDTC123ECAQ-7-F datasheet, DDTC123ECAQ-7-F pinout, DDTC123ECAQ-7-F application, or DDTC123ECAQ-7-F equivalent, key selection criteria include input voltage thresholds (VIN(OFF) ≤ 1.1 V, VIN(ON) ≥ 1.9 V), guaranteed saturation performance (VCE(SAT) ≤ 0.3 V at IC/IB = 10), thermal resistance (RθJA = 625 °C/W), and AEC-Q101 qualification status for automotive use.
Technical Context
This device integrates matched 2.2 kΩ base-emitter and base-collector resistors to enable single-resistor logic-level drive, eliminating external bias components. Its epitaxial planar construction ensures stable hFE across temperature (–55°C to +150°C) and supports reliable switching up to 250 MHz fT.
The SOT23 package delivers 200 mW power dissipation on FR4 PCB with minimum pad layout, while the 0.008 g weight and halogen/antimony-free "Green" compound meet stringent automotive environmental requirements per AEC-Q101 and RoHS 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin. |
| IC(max) | 100 mA - Continuous collector current rating; supports driving medium-current loads like indicator LEDs or small relays. |
| R1 = R2 | 2.2 kΩ ±30% - Matched internal bias resistors simplify logic-level interfacing without external components. |
| VCE(SAT) | ≤ 0.3 V at IC/IB = 10 - Ensures low conduction loss and minimal self-heating in saturated switching mode. |
| hFE | ≥20 at VCE = 5 V, IC = 20 mA - Guarantees sufficient current amplification for predictable turn-on under defined load conditions. |
| fT | 250 MHz - Supports high-speed digital switching applications such as PWM-controlled drivers up to ~10 MHz. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 flammability rating, and 0.008 g mass.
| 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 | Internal connection point between R1 and R2; accepts logic-level input to activate transistor. |
| 3 (Collector) | Output current path | High-side output node delivering switched current to load; rated for 50 V and 100 mA continuous operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 2.2 kΩ matched resistors eliminate need for external base biasing components, reducing BOM count and PCB area. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics with full PPAP capability. |
| Halogen- and antimony-free "Green" construction | Meets <900 ppm Br, <900 ppm Cl (<1500 ppm total Br+Cl), and <1000 ppm Sb; compliant with global environmental regulations. |
| Low VCE(SAT) at rated current | ≤0.3 V at IC/IB = 10 ensures minimal power loss and thermal rise during sustained conduction. |
Applications
| Automotive Interior Lighting Control | Industrial PLC Digital Output Stage |
|---|---|
Use Scenario: Switching 12 V LED strips in dashboard backlighting and ambient lighting modules. IC Role / Device Role / Timing Role: NPN pre-biased transistor acting as low-side load switch driven by microcontroller GPIO. Use Value: Eliminates discrete resistor bias network, reduces footprint by >30%, and ensures robust turn-on at 3.3 V logic levels with guaranteed VIN(ON) ≥ 1.9 V. | Use Scenario: Driving 24 V solenoid valves and indicator lamps in programmable logic controller output modules. IC Role / Device Role / Timing Role: High-reliability digital switch providing galvanically isolated current sinking capability. Use Value: AEC-Q101 qualification ensures long-term stability in industrial environments; 50 V VCEO provides margin against inductive kickback transients. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Signal Conditioning |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., sensor bias supplies) during boot-up and sleep transitions in smart home appliances. IC Role / Device Role / Timing Role: Low-power enable switch controlled by system management MCU with precise timing coordination. Use Value: Guaranteed VIN(OFF) ≤ 1.1 V prevents false turn-on from noise; 100 mA IC rating supports multiple parallel loads. | Use Scenario: Isolating and buffering analog front-end signals in portable ultrasound and ECG devices where leakage must be minimized. IC Role / Device Role / Timing Role: Low-leakage active switch enabling signal path routing without loading sensitive amplifier stages. Use Value: IO(OFF) ≤ 0.5 μA at VCC = 50 V ensures negligible signal path contamination during off-state. |
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 |
|---|---|---|---|
| DDTC123EKA-7-F | Same R1=R2=2.2 kΩ, but standard (non-automotive) qualification; no AEC-Q101 or PPAP support. | Limited to commercial/industrial use; not approved for automotive safety-critical subsystems. | Select when AEC-Q101 compliance is unnecessary and cost optimization is prioritized. |
| NSVDTC123EWT1G | Identical R1=R2=2.2 kΩ, AEC-Q101 qualified, but uses SC-70 package (smaller footprint, higher RθJA = 700 °C/W). | Higher thermal resistance limits continuous current in high-ambient environments; requires tighter thermal design. | Choose for space-constrained layouts where board area is critical and power dissipation remains below 120 mW. |
Compared with DDTC123ECAQ-7-F, DDTC123EKA-7-F lacks automotive qualification but offers identical electrical specs for non-automotive use, while NSVDTC123EWT1G trades thermal performance for smaller size-making the original optimal for automotive applications needing proven reliability and thermal headroom.
Availability
DDTC123ECAQ-7-F is available at Aetrix Electronics and suitable for automotive interior lighting control, industrial PLC digital output stages, and consumer appliance power sequencing requiring stable component supply and AEC-Q101 assurance.
Supply support for DDTC123ECAQ-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, specializing in high-reliability, energy-efficient components for automotive, industrial, and consumer markets.
This part belongs to the DDTC (R1 = R2 Series) CA family-designed specifically for simplified, space-efficient digital switching in automotive and industrial control systems with integrated biasing and AEC-Q101 validation.
FAQ
What is the maximum operating temperature range for DDTC123ECAQ-7-F?
The device operates reliably from –55°C to +150°C, meeting AEC-Q101 requirements for under-hood automotive applications. Its thermal resistance (RθJA = 625 °C/W) assumes mounting on FR4 PCB with minimum recommended pad layout; derating is required above +70°C ambient to maintain 200 mW power dissipation limit.
Does DDTC123ECAQ-7-F require external bias resistors?
No. It integrates matched 2.2 kΩ base-emitter (R1) and base-collector (R2) resistors, enabling direct connection to 3.3 V or 5 V logic outputs without external components. This simplifies circuit design, improves consistency, and reduces PCB area versus discrete transistor + resistor solutions.
How does the AEC-Q101 qualification impact design validation?
AEC-Q101 qualification confirms the device has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life-specifically for automotive use. It eliminates the need for customer-level reliability requalification, accelerates PPAP submission, and supports functional safety documentation in ASIL-B systems where transistor failure modes are mitigated.
What is the typical input current at 5 V drive voltage?
At VIN = 5 V, the typical input current is 3.8 mA, calculated using the internal 2.2 kΩ bias network. This value is confirmed in the Electrical Characteristics table and ensures sufficient base drive for guaranteed saturation (IC/IB = 10) across process and temperature variations.
DDTC123ECAQ-7-F 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:
- Active
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 2.2 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 20 @ 20mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTC123ECAQ-7-F FAQ
1.How can I place an order for DDTC123ECAQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC123ECAQ-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 DDTC123ECAQ-7-F reliable?
The price and inventory of DDTC123ECAQ-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 DDTC123ECAQ-7-F is usually 5 days.
3.What payment methods are accepted for DDTC123ECAQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC123ECAQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC123ECAQ-7-F?
DDTC123ECAQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC123ECAQ-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 DDTC123ECAQ-7-F?
For technical support, including DDTC123ECAQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC123ECAQ-7-F requirements.
6.How does Aetrix verify that DDTC123ECAQ-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC123ECAQ-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 DDTC123ECAQ-7-F meets industry standards.
7.What is the process for return or replacement of DDTC123ECAQ-7-F?
All DDTC123ECAQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC123ECAQ-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 DDTC123ECAQ-7-F part is unused and in its original packaging.
Return procedure for DDTC123ECAQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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