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Diodes Incorporated DDC143EH-7
- Part No.:
- DDC143EH-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- SOT-563, SOT-666
- Datasheet:
-
DDC143EH-7.pdf
- Description:
- TRANS 2NPN PREBIAS 0.15W SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
DDC143EH-7 from Diodes Incorporated is an NPN pre-biased dual small-signal transistor in SOT-563 package, featuring integrated 4.7 kΩ and 4.7 kΩ bias resistors, 50 V VCEO, 100 mA IO, and 150 mW PD. It functions as a compact, logic-compatible switch in digital interface and level-shifting circuits for portable consumer electronics.
For engineers reviewing the DDC143EH-7 datasheet, DDC143EH-7 pinout, DDC143EH-7 application, or DDC143EH-7 equivalent, key selection criteria include input threshold voltage (VIN(on) = 1.9 V), output saturation voltage (VCE(sat) ≤ 0.3 V), DC current gain (hFE = 100–600), and dual-channel integration in a 6-pin micro package.
Technical Context
This device integrates two identical NPN transistors with monolithically embedded base bias resistors (R1 = R2 = 4.7 kΩ), eliminating external bias components. Its epitaxial planar construction ensures stable hFE across temperature (−55°C to +150°C) and supports fast switching via fT = 250 MHz.
The SOT-563 package enables high-density PCB layout with six terminals: two emitters, two collectors, and two bases-each internally connected to its respective resistor network. Input voltage thresholds (VIN(off) = 0.5 V, VIN(on) = 1.9 V) are optimized for 3.3 V/5 V CMOS/TTL logic interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Supports rail-to-rail operation up to 5 V logic with 10× safety margin against supply transients |
| IO (max) | 100 mA - Sufficient drive capability for LED indicators, relay drivers, and low-power MOSFET gate control |
| VCE(sat) | ≤0.3 V at IC/IB = 1 mA / 0.1 mA - Minimizes conduction loss and self-heating in always-on or PWM-switched loads |
| R1, R2 | 4.7 kΩ each - Provides fixed base bias for predictable turn-on without external resistor calculation or layout |
| PD | 150 mW - Enables continuous operation at ambient temperatures up to +85°C on standard FR4 with recommended pad layout |
| fT | 250 MHz - Allows use in signal routing and moderate-speed digital isolation (e.g., UART, I²C buffer stages) |
Pinout & Package
SOT-563 is a 6-pin, surface-mount plastic package measuring 1.6 mm × 1.2 mm × 0.6 mm (L × W × H), with matte tin-plated copper leadframe, UL 94V-0 flammability rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of Transistor 1 | Common emitter node for first NPN channel; tied directly to PCB ground plane in most switch configurations |
| 2 | Base of Transistor 1 | Connected internally to R1 (4.7 kΩ); accepts logic-level input to enable Q1 conduction |
| 3 | Collector of Transistor 1 | Output node for Q1; sinks load current to ground when biased, enabling active-low switching |
| 4 | Emitter of Transistor 2 | Independent emitter for second NPN channel; allows dual independent switching or differential pair use |
| 5 | Base of Transistor 2 | Connected internally to R2 (4.7 kΩ); electrically isolated from Pin 2 for separate control |
| 6 | Collector of Transistor 2 | Second output node; supports redundant signaling, mirrored logic, or dual-load driving |
Key Features
| Feature | Design Value |
|---|---|
| Dual NPN with matched bias resistors | Enables space-efficient dual-channel logic-level switching without discrete resistor placement or matching tolerance concerns |
| 0.3 V VCE(sat) at 1 mA | Reduces power dissipation by >60% vs. standard small-signal transistors under same load conditions |
| 100–600 hFE range | Guarantees reliable saturation across manufacturing lot variation and temperature extremes (−55°C to +150°C) |
| SOT-563 footprint | Occupies 50% less board area than SOIC-8 equivalents while maintaining thermal performance via exposed pad compatibility |
Applications
| USB Port Status Indicator | IoT Sensor Node GPIO Expander |
|---|---|
Use Scenario: Driving dual-color LED status indicators (e.g., red/green) per USB port on host controllers or hubs. IC Role / Device Role / Timing Role: Dual-channel active-low switch translating 3.3 V USB enumeration signals into LED current paths. Use Value: Eliminates four external bias resistors and saves 2.5 mm² PCB area per port versus discrete transistor solutions. | Use Scenario: Isolating and level-shifting sensor interrupt lines (e.g., accelerometer, humidity IC) to MCU GPIOs. IC Role / Device Role / Timing Role: Bidirectional digital interface buffer with 250 MHz fT ensuring sub-microsecond response to edge-triggered interrupts. Use Value: Maintains signal integrity across mixed-voltage domains (1.8 V sensor → 3.3 V MCU) without timing skew or shoot-through risk. |
| Industrial PLC Input Module | Automotive Body Control Unit |
Use Scenario: Conditioning 24 V dry-contact inputs into 3.3 V logic levels for microcontroller polling in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: High-impedance input stage with 50 V breakdown rating protecting downstream logic from field-wiring transients. Use Value: Withstands repetitive 50 V surges without clamping diodes or TVS, reducing BOM count by one component per channel. | Use Scenario: Controlling interior LED map lights and door courtesy lamps using CAN-linked BCM outputs. IC Role / Device Role / Timing Role: Low-power load switch interfacing 5 V CAN transceiver I/O with 12 V lamp circuits via external pull-up. Use Value: Delivers 100 mA per channel at <0.3 V drop, limiting heat rise to <1.5°C/W in sealed BCM enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NPN pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDC143Z-7 | Same R1/R2 (4.7 kΩ), but SOT-363 package (larger footprint, higher RθJA = 900°C/W) | Preferred where reworkability or legacy footprint compatibility is required over miniaturization | Select when board assembly uses larger pitch tooling or thermal derating margins exceed 20% |
| NSVD143EDWTBG | Identical bias values and SOT-563, but ±10% R tolerance (vs. ±5% for DDC143EH-7) and lower hFE min (80 vs. 100) | Suitable for non-critical indicator loads where gain variation does not affect saturation margin | Choose for cost-sensitive consumer designs where 20% higher base drive current is acceptable |
Compared with DDC143Z-7 and NSVD143EDWTBG, DDC143EH-7 offers tighter resistor tolerance, higher minimum hFE, and superior thermal resistance (833°C/W), making it optimal for space-constrained, thermally demanding, or precision-bias applications.
Availability
DDC143EH-7 is available at Aetrix Electronics and suitable for USB interface modules, IoT sensor nodes, industrial PLC input conditioning, and automotive body control units requiring stable component supply and long-term manufacturability.
Supply support for DDC143EH-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 computing, industrial, and automotive markets.
The DDC series targets space- and power-constrained digital interface applications, delivering integrated biasing to reduce design complexity and improve signal integrity in multi-channel logic translation.
FAQ
What is the maximum continuous collector current per channel for DDC143EH-7?
The absolute maximum rated output current is 100 mA per channel under TA = +25°C with proper PCB thermal relief. Derating applies above +25°C: power dissipation drops linearly to zero at +150°C junction temperature, per the 833°C/W RθJA rating and 150 mW PD limit. Real-world sustained current should be limited to 70 mA at +85°C ambient with standard FR4 layout.
Can DDC143EH-7 replace a discrete 2N3904 + two 4.7 kΩ resistors in a new design?
Yes-DDC143EH-7 provides functional equivalence with improved layout efficiency and guaranteed resistor matching. Its VCEO (50 V), hFE (100–600), and VCE(sat) (≤0.3 V) meet or exceed 2N3904 specs, and the integrated 4.7 kΩ resistors eliminate placement error and solder joint reliability risks associated with three discrete components.
Is the SOT-563 package compatible with standard reflow profiles for lead-free assembly?
Yes-DDC143EH-7 is fully RoHS-compliant with matte tin annealed terminations and qualified for IPC/JEDEC J-STD-020 moisture sensitivity level 1. It withstands peak reflow temperatures up to 260°C for 30 seconds and is compatible with standard SnAgCu (SAC305) profiles without delamination or voiding when using recommended pad layout AP02001.
Does DDC143EH-7 support 1.8 V logic input levels?
No-its specified VIN(on) is 1.9 V (min) at IO = 20 mA, meaning reliable turn-on requires ≥2.0 V input under typical load. For true 1.8 V compatibility, consider DDC123JH-7 (VIN(on) = 0.5 V) or add a level-shifter stage; direct 1.8 V drive may result in marginal or non-saturated operation.
DDC143EH-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):
- 4.7kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 20 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250MHz
- Power - Max:
- 150mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
DDC143EH-7 FAQ
1.How can I place an order for DDC143EH-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDC143EH-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 DDC143EH-7 reliable?
The price and inventory of DDC143EH-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDC143EH-7 is usually 5 days.
3.What payment methods are accepted for DDC143EH-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDC143EH-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDC143EH-7?
DDC143EH-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDC143EH-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 DDC143EH-7?
For technical support, including DDC143EH-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDC143EH-7 requirements.
6.How does Aetrix verify that DDC143EH-7 is sourced from the original manufacturer or authorized distributors?
All DDC143EH-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 DDC143EH-7 meets industry standards.
7.What is the process for return or replacement of DDC143EH-7?
All DDC143EH-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDC143EH-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 DDC143EH-7 part is unused and in its original packaging.
Return procedure for DDC143EH-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDC143EH-7 Tags
-
SMUN5311DW1T1G
onsemi
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UMH9NTN
Rohm Semiconductor
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PUMH13,115
Nexperia USA Inc.
-
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
-
PUMD12,115
Nexperia USA Inc.
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PUMD9,115
Nexperia USA Inc.
-
PUMH9,115
Nexperia USA Inc.
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PUMD3,115
Nexperia USA Inc.
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DCX114EU-7-F
Diodes Incorporated
-
PUMD13,115
Nexperia USA Inc.
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