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Diodes Incorporated DDC143TH-7
- Part No.:
- DDC143TH-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- SOT-563, SOT-666
- Datasheet:
-
DDC143TH-7.pdf
- Description:
- TRANS 2NPN PREBIAS 0.15W SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:2,312
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Product details
Overview
DDC143TH-7 from Diodes Incorporated is an NPN pre-biased dual small-signal transistor in SOT-563 package, featuring integrated 4.7 kΩ and 10 kΩ bias resistors, 50 V VCEO, 100 mA IO, and hFE of 100–600 at IC = 1 mA. It operates as a compact logic-level switch in digital interface circuits for microcontroller I/O expansion and LED driver stages.
For engineers reviewing the DDC143TH-7 datasheet, DDC143TH-7 pinout, DDC143TH-7 application, or DDC143TH-7 equivalent, key selection criteria include input voltage thresholds (VIN(OFF) ≤ 0.5 V, VIN(ON) ≥ 1.9 V), output saturation voltage (VCE(sat) ≤ 0.3 V @ IC/IB = 1 mA/0.1 mA), thermal resistance (RθJA = 833 °C/W), and RoHS-compliant green construction.
Technical Context
This dual NPN transistor integrates two independent pre-biased elements sharing common emitter connections, each with dedicated base resistors (R1 = 4.7 kΩ, R2 = 10 kΩ) enabling direct TTL/CMOS logic interfacing without external bias networks. Its epitaxial planar die construction ensures stable hFE across temperature (−55°C to +150°C).
The device supports rail-to-rail input operation up to 40 V, delivers 100 mA maximum output current per channel, and maintains low VCE(sat) under 0.3 V-critical for minimizing power loss in high-duty-cycle switching applications such as level translation and load control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V industrial control rails. |
| IO (max) | 100 mA - Continuous output current per channel; sufficient for driving LEDs, relays, or logic inputs. |
| hFE | 100–600 - DC current gain at IC = 1 mA, VCE = 5 V; ensures reliable saturation with low base drive. |
| VCE(sat) | ≤ 0.3 V @ IC/IB = 1 mA/0.1 mA - Low saturation voltage reduces conduction loss and self-heating. |
| RθJA | 833 °C/W - Thermal resistance on FR4 board; defines safe power derating above 25°C ambient. |
| PD | 150 mW - Maximum power dissipation at TA = 25°C; limits continuous operation in compact layouts. |
| Package | SOT-563 - 6-pin ultra-small surface-mount package; footprint compatible with automated placement and reflow. |
Pinout & Package
SOT-563 is a 6-pin, dual-row, leadless plastic package measuring 2.2 mm × 1.7 mm × 0.6 mm (L × W × H), rated UL 94V-0, with matte tin annealed terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter 1 | Common emitter connection for first NPN transistor; tied internally to Pin 4. |
| 2 | Base 1 | Input node for first transistor; connected to internal 4.7 kΩ resistor (R1) to Pin 3. |
| 3 | Collector 1 | Output node for first transistor; requires external load to VCC. |
| 4 | Emitter 2 | Common emitter connection for second NPN transistor; tied internally to Pin 1. |
| 5 | Base 2 | Input node for second transistor; connected to internal 10 kΩ resistor (R2) to Pin 6. |
| 6 | Collector 2 | Output node for second transistor; independent switching path from Collector 1. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Two matched on-die resistors (R1 = 4.7 kΩ, R2 = 10 kΩ) eliminate four external components per channel. |
| Green construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); meets EU RoHS 2 and JEDEC J-STD-020 Level 1 MSL. |
| Dual-channel isolation | Electrically independent collector paths (Pins 3 & 6) with shared emitter (Pins 1 & 4); enables synchronous or asynchronous switching. |
| Low-input-threshold logic compatibility | VIN(OFF) ≤ 0.5 V and VIN(ON) ≥ 1.9 V at VCC = 5 V ensure robust noise margin against 3.3 V/5 V CMOS outputs. |
Applications
| Microcontroller I/O Expander | LED Driver Stage |
|---|---|
|
Use Scenario: Expanding GPIO count on resource-constrained MCUs (e.g., STM32F030, PIC16F1503) to drive multiple peripheral signals. IC Role / Device Role / Timing Role: Dual NPN switch translating MCU logic levels to higher-current loads; no external biasing required. Use Value: Reduces BOM count by 4 resistors per channel and saves PCB area versus discrete transistor + resistor solutions. |
Use Scenario: Driving 20 mA indicator LEDs in industrial HMIs where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Constant-current sink switch with guaranteed VCE(sat) ≤ 0.3 V at 20 mA, minimizing LED forward-voltage drop impact. Use Value: Enables uniform brightness across dual LEDs without individual current-limiting resistors. |
| Logic-Level Translator | Relay Driver Interface |
|
Use Scenario: Interfacing 1.8 V FPGA I/O banks to 5 V sensor modules requiring clean level shift without timing skew. IC Role / Device Role / Timing Role: Voltage-tolerant input stage (VIN = −10 V to +30 V) with fast turn-on/off due to optimized R1/R2 ratio. Use Value: Eliminates need for dedicated level-shifter ICs while maintaining signal integrity below 10 MHz. |
Use Scenario: Controlling 12 V/24 V electromagnetic relays in building automation panels using 3.3 V microcontroller outputs. IC Role / Device Role / Timing Role: High-gain (hFE ≥ 100) saturated switch delivering 100 mA per coil with minimal base drive (≤ 0.1 mA). Use Value: Prevents relay chatter during brown-out conditions via guaranteed turn-on at VIN ≥ 1.9 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar pre-biased dual NPN transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDC114TH-7 | R1 = 10 kΩ, R2 = 10 kΩ (vs. 4.7 kΩ/10 kΩ); lower input sensitivity (VIN(ON) = 3.0 V min) | Better noise immunity in high-EMI environments; less suitable for weak-drive 1.8 V logic | Select when higher VIN(ON) improves system robustness and base current margin is not constrained. |
| NSVD2C200LT1G | Single-channel, SOT-23-3; R1 = 4.7 kΩ, R2 = 4.7 kΩ; hFE = 160–400; PD = 200 mW | Requires two devices for dual functionality; larger footprint than SOT-563 but higher power rating | Choose when higher power handling (>150 mW) or single-channel modularity outweighs space and BOM advantages of dual configuration. |
Compared with DDC114TH-7, DDC143TH-7 offers lower input threshold and faster turn-on for marginal-drive logic; versus NSVD2C200LT1G, it delivers dual-channel integration and 30% smaller board area at the cost of 50 mW lower power rating.
Availability
DDC143TH-7 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and consumer IoT gateway designs requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for DDC143TH-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, industry-qualified components for automotive, industrial, and computing markets.
The DDC series targets space- and cost-sensitive digital interface applications, delivering pre-biased transistor functionality with reduced design complexity and improved assembly yield in high-volume SMT production.
FAQ
What is the maximum operating temperature for DDC143TH-7?
The DDC143TH-7 has an operating junction temperature range of −55°C to +150°C, with thermal resistance RθJA = 833 °C/W on standard FR4 PCB. Derating begins linearly above +25°C ambient, reaching zero power at +150°C junction temperature per the datasheet's Fig. 1 derating curve.
Can DDC143TH-7 replace a discrete 2N3904 + two resistors?
Yes-it replaces one 2N3904 plus two 4.7 kΩ and 10 kΩ bias resistors per channel, reducing component count, layout area, and assembly steps. Its guaranteed hFE (100–600) and VCE(sat) (≤0.3 V) meet or exceed typical 2N3904 performance under identical bias conditions.
Is DDC143TH-7 pin-compatible with other DDC-series parts in SOT-563?
Yes-all DDC/ DDA parts in SOT-563 share identical mechanical pinout and terminal assignments (Pins 1–6). Electrical differences (R1, R2, VIN thresholds) do not affect physical mounting or soldering, enabling drop-in substitution during prototyping or qualification.
Does DDC143TH-7 support 1.8 V logic input directly?
No-its specified VIN(ON) minimum is 1.9 V at IO = 20 mA, making it unsuitable for guaranteed turn-on with 1.8 V logic. For 1.8 V systems, DDC123JH-7 (VIN(ON) = 1.1 V) or DDC114YH-7 (VIN(ON) = 1.4 V) are validated alternatives per the datasheet's electrical characteristics table.
DDC143TH-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 NPN - Pre-Biased (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 50V
- Resistor - Base (R1):
- 4.7kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 250µA, 2.5mA
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- 250MHz
- Power - Max:
- 150mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
DDC143TH-7 FAQ
1.How can I place an order for DDC143TH-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDC143TH-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 DDC143TH-7 reliable?
The price and inventory of DDC143TH-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDC143TH-7 is usually 5 days.
3.What payment methods are accepted for DDC143TH-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDC143TH-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDC143TH-7?
DDC143TH-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDC143TH-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 DDC143TH-7?
For technical support, including DDC143TH-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDC143TH-7 requirements.
6.How does Aetrix verify that DDC143TH-7 is sourced from the original manufacturer or authorized distributors?
All DDC143TH-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 DDC143TH-7 meets industry standards.
7.What is the process for return or replacement of DDC143TH-7?
All DDC143TH-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDC143TH-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 DDC143TH-7 part is unused and in its original packaging.
Return procedure for DDC143TH-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDC143TH-7 Tags
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SMUN5311DW1T1G
onsemi
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UMH9NTN
Rohm Semiconductor
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PUMH13,115
Nexperia USA Inc.
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PUMD3-QX
Nexperia USA Inc.
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PUMD2,115
Nexperia USA Inc.
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RN4987FE,LF(CT
Toshiba Semiconductor and Storage
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PUMD12,115
Nexperia USA Inc.
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PUMD9,115
Nexperia USA Inc.
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PUMH9,115
Nexperia USA Inc.
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PUMD3,115
Nexperia USA Inc.
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DCX114EU-7-F
Diodes Incorporated
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PUMD13,115
Nexperia USA Inc.
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