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Diodes Incorporated DDTC143ZCAQ-13-F
- Part No.:
- DDTC143ZCAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC143ZCAQ-13-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
DDTC143ZCAQ-13-F from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT23 package, featuring built-in bias resistors R1 = 4.7 kΩ and R2 = 47 kΩ (R1 ≠ R2), VCEO = 50 V, IC(MAX) = 100 mA, and AEC-Q101 qualification for automotive applications such as LED load switching and GPIO interface buffering.
For engineers reviewing the DDTC143ZCAQ-13-F datasheet, DDTC143ZCAQ-13-F pinout, DDTC143ZCAQ-13-F application, or DDTC143ZCAQ-13-F equivalent, key selection criteria include input voltage thresholds (VIN(OFF) = 0.5 V, VIN(ON) = 2.5 V @ IO = 5 mA), output saturation voltage (VCE(SAT) ≤ 0.3 V), DC current gain (GL = 80), and automotive-grade reliability with PPAP capability.
Technical Context
This device integrates a monolithic NPN transistor with two non-matching on-chip bias resistors (R1 = 4.7 kΩ, R2 = 47 kΩ), enabling single-resistor input drive and eliminating external base bias components. It operates as a digital switch with defined logic thresholds and guaranteed saturation under specified IO/IIN conditions.
The SOT23 package supports surface-mount assembly on FR4 PCBs with RθJA = 625 °C/W and PD = 200 mW at TA = 25°C. Its AEC-Q101 qualification confirms suitability for automotive ambient temperature range (–55°C to +150°C) and humidity/reflow robustness per J-STD-020 Level 1.
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 logic-level MOSFET gates. |
| VIN(OFF) | 0.5 V - Input voltage below which output remains off (IO < 0.5 μA); ensures noise immunity against sub-threshold logic glitches. |
| VIN(ON) | 2.5 V - Input voltage at which output saturates with IO = 5 mA and VCE(SAT) ≤ 0.3 V; compatible with 3.3 V CMOS/TTL logic high levels. |
| GL | 80 - DC current gain (IC/IB) at VCE = 5 V, IC = 10 mA; guarantees reliable saturation with low base drive current (IIN = 1.8 mA typical). |
| R1/R2 | 4.7 kΩ / 47 kΩ - Fixed internal resistor ratio enabling predictable turn-on/turn-off behavior without external bias network design. |
| fT | 250 MHz - Gain-bandwidth product; supports fast switching up to ~10–20 MHz in digital applications with minimal propagation delay. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, UL 94V-0 rated, moisture sensitivity level 1, weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal of NPN transistor | Connected internally to R2; serves as common reference node for bias network and output return path. |
| 2 (Base) | Base terminal of NPN transistor | Internally connected between R1 and R2; accepts input signal and sets transistor conduction state. |
| 3 (Collector) | Collector terminal of NPN transistor | Output node; sinks load current to emitter when saturated; rated for 50 V and 100 mA continuous. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 ≠ R2 bias network | Eliminates need for external base resistors; reduces BOM count and layout area while ensuring consistent switching thresholds. |
| AEC-Q101 qualification | Validated for automotive temperature, vibration, and lifetime requirements; supports PPAP documentation for Tier-1 production programs. |
| Green, halogen-free construction | Meets RoHS 2 (2011/65/EU) and Diodes Inc.'s "Green" standard (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb); compliant with global environmental regulations. |
| SOT23 footprint compatibility | Enables drop-in replacement of discrete transistor + resistor combinations; maintains standard pick-and-place and reflow profiles. |
Applications
| Automotive LED Lighting Control | Industrial GPIO Interface Buffering |
|---|---|
Use Scenario: Driving 12 V/24 V automotive cabin LEDs (e.g., map lights, door courtesy lamps) from microcontroller GPIO pins. IC Role / Device Role / Timing Role: Digital switch that translates 3.3 V logic signals into 100 mA sink current paths with guaranteed saturation and thermal stability. Use Value: Reduces component count by replacing discrete NPN + two resistors; eliminates risk of incorrect bias resistor selection and improves board-level reliability. |
Use Scenario: Isolating and level-shifting industrial PLC I/O signals between 5 V logic controllers and 24 V field sensors/actuators. IC Role / Device Role / Timing Role: Logic-level translator and current amplifier that provides galvanic separation via open-collector output and defined VCE(SAT). Use Value: Ensures clean switching edges and stable off-state leakage (<0.5 μA), critical for noise-prone factory floor environments. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Signal Conditioning |
Use Scenario: Enabling sequential power-up of subsystems (e.g., display backlight, sensor array, comms module) in smart home appliances using MCU-controlled enable lines. IC Role / Device Role / Timing Role: Low-power enable switch with precise VIN(OFF)/VIN(ON) thresholds to prevent partial activation during brown-out conditions. Use Value: Prevents erratic behavior during supply ramp-up; R1/R2 ratio ensures consistent hysteresis-free switching across temperature (-55°C to +150°C). |
Use Scenario: Controlling analog multiplexer enable lines or relay drivers in portable diagnostic devices where space and EMI are constrained. IC Role / Device Role / Timing Role: Low-noise, low-leakage switch that minimizes signal path interference and preserves integrity of µV-level sensor outputs. Use Value: Sub-μA off-state leakage and 250 MHz fT support fast, clean transitions without coupling noise into adjacent analog circuitry. |
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 |
|---|---|---|---|
| DDTC143ZCA-7-F | Same die, identical R1/R2 values and electrical specs, but qualified to AEC-Q101 (not Automotive grade marking) and supplied in 3,000-unit 7-inch reel. | Lacks automotive-specific traceability and PPAP documentation; suitable for industrial or commercial designs not requiring automotive compliance. | Select when AEC-Q101 qualification suffices and smaller reel size aligns with prototyping or low-volume production needs. |
| NSV143ZMUTBG | Onsemi AEC-Q101 NPN pre-biased transistor with R1 = 4.7 kΩ, R2 = 47 kΩ, but higher VCEO = 60 V and lower IC(MAX) = 80 mA. | Better overvoltage margin in 48 V systems, but reduced current drive limits use in high-load LED or relay applications. | Select when system voltage exceeds 50 V or when Onsemi supply chain alignment is required; verify thermal derating at full load. |
Compared with DDTC143ZCAQ-13-F, the -7-F variant offers identical performance with less stringent automotive traceability, while NSV143ZMUTBG trades current capacity for higher voltage tolerance-making the original optimal for cost-sensitive, volume automotive 12/24 V switching where 100 mA drive and full PPAP support are essential.
Availability
DDTC143ZCAQ-13-F is available at Aetrix Electronics and suitable for automotive LED control, industrial I/O buffering, and medical signal conditioning requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for DDTC143ZCAQ-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, energy-efficient components for automotive, industrial, and consumer markets.
This part belongs to the DDTC (R1≠R2 Series) CA family of pre-biased transistors, designed specifically to simplify digital switching in space-constrained, high-volume applications by integrating precision bias resistors and meeting automotive qualification standards.
FAQ
What is the difference between DDTC143ZCAQ-13-F and DDTC143ZCA-7-F?
The DDTC143ZCAQ-13-F is marked "Automotive" and supports full PPAP documentation with traceability for Tier-1 automotive programs; it ships in a 10,000-unit 13-inch reel. The DDTC143ZCA-7-F is AEC-Q101 qualified but lacks automotive-specific marking and ships in a 3,000-unit 7-inch reel. Electrically and thermally, both are identical.
Can DDTC143ZCAQ-13-F replace a discrete NPN transistor plus two external resistors?
Yes-it integrates an NPN transistor with R1 = 4.7 kΩ and R2 = 47 kΩ, matching the function of a discrete 2N3904 plus 4.7 kΩ and 47 kΩ resistors. Layout requires only three pads (SOT23), reducing PCB area and eliminating resistor placement errors, while guaranteeing resistor ratio tolerance (±20%) and thermal tracking.
What is the maximum operating temperature and thermal derating behavior?
DDTC143ZCAQ-13-F is rated for TJ = –55°C to +150°C and TA = –55°C to +150°C. At TA = 100°C, its power dissipation derates linearly from 200 mW at 25°C to ~100 mW, based on RθJA = 625 °C/W and FR4 mounting per AP02001 pad layout. Derating curves are provided in DS30330 Figure 1.
Is this device suitable for analog amplification or only digital switching?
No-it is optimized for digital switching: its R1/R2 network fixes bias, limiting base current control; GL = 80 is specified only at IC = 10 mA, and fT = 250 MHz is given for reference. The datasheet does not specify linearity, hFE vs. IC across range, or small-signal parameters required for analog amplification.
DDTC143ZCAQ-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):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 5mA
- 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
DDTC143ZCAQ-13-F FAQ
1.How can I place an order for DDTC143ZCAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC143ZCAQ-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 DDTC143ZCAQ-13-F reliable?
The price and inventory of DDTC143ZCAQ-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 DDTC143ZCAQ-13-F is usually 5 days.
3.What payment methods are accepted for DDTC143ZCAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC143ZCAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC143ZCAQ-13-F?
DDTC143ZCAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC143ZCAQ-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 DDTC143ZCAQ-13-F?
For technical support, including DDTC143ZCAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC143ZCAQ-13-F requirements.
6.How does Aetrix verify that DDTC143ZCAQ-13-F is sourced from the original manufacturer or authorized distributors?
All DDTC143ZCAQ-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 DDTC143ZCAQ-13-F meets industry standards.
7.What is the process for return or replacement of DDTC143ZCAQ-13-F?
All DDTC143ZCAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC143ZCAQ-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 DDTC143ZCAQ-13-F part is unused and in its original packaging.
Return procedure for DDTC143ZCAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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