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Diodes Incorporated DDTC143TCAQ-13-F
- Part No.:
- DDTC143TCAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC143TCAQ-13-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,541
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Product details
Overview
DDTC143TCAQ-13-F from Diodes Incorporated is an NPN pre-biased transistor in SOT23 package with single built-in bias resistor (R1 = 4.7 kΩ), AEC-Q101 qualified for automotive use, VCEO = 50 V, IC(max) = 100 mA, and hFE = 100–250 at IC = 1 mA. It serves as a compact, reliable switch in low-power automotive signal routing and LED driver stages.
For engineers reviewing the DDTC143TCAQ-13-F datasheet, DDTC143TCAQ-13-F pinout, DDTC143TCAQ-13-F application, or DDTC143TCAQ-13-F equivalent, key selection criteria include R1 tolerance (±30%), VCE(sat) ≤ 0.3 V at IC/IB = 1 mA/0.1 mA, thermal resistance (625 °C/W), AEC-Q101 qualification status, and SOT23 footprint compatibility.
Technical Context
This device implements a monolithic NPN bipolar junction transistor with an integrated 4.7 kΩ base bias resistor (R1 only), eliminating external bias components. Its epitaxial planar die construction ensures stable gain and low leakage across -55°C to +150°C operating range.
The transistor operates in saturation switching mode with guaranteed VCE(sat) ≤ 0.3 V under defined IC/IB conditions and supports high-speed switching up to 250 MHz fT, making it suitable for digital logic interface and load control in space-constrained automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage before breakdown; enables use in 12 V/24 V automotive supply rails with margin. |
| IC(max) | 100 mA - Continuous collector current limit; supports driving small solenoids, LEDs, or logic-level MOSFET gates. |
| R1 | 4.7 kΩ ±30% - Integrated base bias resistor eliminates external component count and layout area in simple switch designs. |
| VCE(sat) | ≤ 0.3 V at IC/IB = 1 mA/0.1 mA - Low saturation voltage minimizes power loss and self-heating in always-on or PWM-driven loads. |
| hFE | 100–250 at IC = 1 mA, VCE = 5 V - Confirmed DC current gain range ensures predictable turn-on behavior with fixed-bias drive. |
| fT | 250 MHz - Gain-bandwidth product confirms suitability for signal switching up to ~10–20 MHz without significant gain roll-off. |
| PD | 200 mW - Power dissipation rating on FR4 board defines thermal derating envelope for sustained operation. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package (2.9 mm × 1.3 mm × 1.0 mm), moisture sensitivity level 1, matte tin-plated leads, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal of NPN transistor | Reference node for bias network; connects directly to ground or low-side return path in switch configurations. |
| 2 (Base) | Input control node connected to R1 | Accepts TTL/CMOS-compatible logic-level input; internal R1 pulls base toward VCC when driven high. |
| 3 (Collector) | Output current sink node | Drives load between VCC and collector; configured as low-side switch with controlled saturation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| R1-only bias topology | Reduces BOM count by one resistor per switch channel and improves layout repeatability in multi-channel modules. |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and automotive green standards (<900 ppm Br/Cl, <1000 ppm Sb). |
| SOT23 footprint | Enables drop-in replacement of discrete BJT + resistor combinations while maintaining IPC-7351-compliant land pattern. |
Applications
| Automotive Door Module Switching | LED Indicator Driver |
|---|---|
Use Scenario: Controlling window lock/unlock solenoids and mirror adjustment motors in door control units. IC Role / Device Role / Timing Role: Low-side switch enabling microcontroller GPIO to safely drive 12 V inductive loads. Use Value: Eliminates need for external base resistor and reduces PCB area by >1.2 mm² per channel versus discrete solution. | Use Scenario: Driving status LEDs on instrument clusters and center consoles with precise brightness control via PWM. IC Role / Device Role / Timing Role: Constant-current switch ensuring consistent LED luminance across temperature and supply variation. Use Value: VCE(sat) ≤ 0.3 V limits power loss to <30 μW at 10 mA, minimizing thermal drift in sealed enclosures. |
| Body Control Module Logic Interface | Smart Sensor Signal Conditioning |
Use Scenario: Level-shifting and isolation between 3.3 V MCU I/O and 5 V/12 V subsystems (e.g., HVAC actuators, seat controls). IC Role / Device Role / Timing Role: Digital buffer with defined input threshold and rail-to-rail output swing capability. Use Value: R1 tolerance (±30%) ensures robust turn-on across process variation, supporting >10⁵ cycle reliability in duty-cycled functions. | Use Scenario: Enabling/disabling analog sensor outputs (e.g., pressure, temperature) during sleep mode to reduce system quiescent current. IC Role / Device Role / Timing Role: Active-low enable switch placed in sensor signal path to gate analog output to ADC. Use Value: ICBO ≤ 0.5 μA guarantees <5 nA leakage into downstream op-amp inputs, preserving measurement accuracy. |
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 |
|---|---|---|---|
| DDTC143TKA-7-F | Same R1 = 4.7 kΩ, but standard-grade (non-automotive); no AEC-Q101 qualification or PPAP support. | Limited to industrial/commercial applications; not approved for safety-critical automotive systems. | Select when cost sensitivity outweighs automotive compliance requirements and supply chain traceability is not mandated. |
| NSV143T3T5G | Onsemi part with identical R1 = 4.7 kΩ, same SOT23 package, but hFE min = 80 and VCE(sat) max = 0.35 V. | Marginally higher saturation voltage may increase power loss in high-duty-cycle LED drivers. | Choose if dual-sourcing is required and minor VCE(sat) degradation is acceptable in non-thermal-limited designs. |
Compared with DDTC143TCAQ-13-F, DDTC143TKA-7-F lacks automotive qualification and traceability, while NSV143T3T5G trades slightly higher VCE(sat) for second-source availability-both require revalidation of thermal performance and AEC-Q101 compliance in automotive programs.
Availability
DDTC143TCAQ-13-F is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting subsystems, and smart sensor interface circuits requiring stable component supply and full AEC-Q101 documentation support.
Supply support for DDTC143TCAQ-13-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 components for automotive, industrial, and computing markets.
The DDTC (R1-only series) is designed specifically for automotive signal switching and logic interface applications where space, reliability, and qualification compliance are critical-targeting ECU, gateway, and domain controller designs.
FAQ
What is the function of the "Q" suffix in DDTC143TCAQ-13-F?
The "Q" suffix denotes AEC-Q101 qualification and PPAP capability. This version is manufactured in IATF 16949-certified facilities and includes full automotive change control documentation, distinguishing it from commercial-grade variants like DDTC143TCA-7-F.
Can DDTC143TCAQ-13-F replace a standard 2N3904 with external base resistor?
Yes-it replaces a 2N3904 + 4.7 kΩ base resistor in low-speed switching applications. However, its fixed R1 value and tighter VCE(sat) spec provide more consistent turn-on behavior than discrete solutions, though design verification is required for timing-critical or high-frequency uses.
Is the SOT23 package lead-free and RoHS compliant?
Yes-DDTC143TCAQ-13-F is fully lead-free and RoHS 3 compliant (2015/863/EU), with halogen- and antimony-free "Green" molding compound meeting <900 ppm Br/Cl and <1000 ppm Sb thresholds per Diodes' specification DS30331 Rev. 11-2.
What is the maximum operating temperature for continuous use?
The device supports continuous operation from -55°C to +150°C junction temperature. At ambient temperatures above 85°C, derating applies: power dissipation must be reduced linearly from 200 mW at 25°C to zero at 150°C, based on RθJA = 625 °C/W on FR4 board.
DDTC143TCAQ-13-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):
- 4.7 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 120 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 2.5mA
- Current - Collector Cutoff (Max):
- 500nA (ICBO)
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTC143TCAQ-13-F FAQ
1.How can I place an order for DDTC143TCAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC143TCAQ-13-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 DDTC143TCAQ-13-F reliable?
The price and inventory of DDTC143TCAQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC143TCAQ-13-F is usually 5 days.
3.What payment methods are accepted for DDTC143TCAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC143TCAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC143TCAQ-13-F?
DDTC143TCAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC143TCAQ-13-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 DDTC143TCAQ-13-F?
For technical support, including DDTC143TCAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC143TCAQ-13-F requirements.
6.How does Aetrix verify that DDTC143TCAQ-13-F is sourced from the original manufacturer or authorized distributors?
All DDTC143TCAQ-13-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 DDTC143TCAQ-13-F meets industry standards.
7.What is the process for return or replacement of DDTC143TCAQ-13-F?
All DDTC143TCAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC143TCAQ-13-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 DDTC143TCAQ-13-F part is unused and in its original packaging.
Return procedure for DDTC143TCAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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