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Diodes Incorporated DDC144TH-7-F
- Part No.:
- DDC144TH-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- SOT-563, SOT-666
- Datasheet:
-
DDC144TH-7-F.pdf
- Description:
- TRANS 2NPN PREBIAS 0.15W SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:2,471
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Product details
Overview
DDC144TH-7-F from Diodes Incorporated is an NPN pre-biased dual small-signal transistor in SOT563 package, featuring integrated 47kΩ bias resistors per channel, 50V VCEO, 100mA IC(MAX), and hFE of 100–600 at 1mA/5V - used for digital logic interfacing and level translation in space-constrained consumer and industrial control boards.
For engineers reviewing the DDC144TH-7-F datasheet, DDC144TH-7-F pinout, DDC144TH-7-F application, or DDC144TH-7-F equivalent, key selection criteria include built-in resistor tolerance (±30%), dual-channel isolation, thermal resistance (833°C/W), and RoHS-compliant green packaging with J-STD-020 Level 1 moisture sensitivity.
Technical Context
This dual NPN transistor integrates two independent epitaxial planar devices with monolithically embedded base-emitter bias resistors (R1 = 47kΩ nominal) to eliminate external bias components in switching applications. Each channel operates up to 50V VCEO and delivers guaranteed hFE ≥100 at IC = 1mA, VCE = 5V.
The SOT563 package supports high-density mounting with 0.015g mass and UL 94V-0 flammability rating. Thermal performance is specified at 150mW power dissipation on FR4 PCB with minimum pad layout, and junction temperature range spans −55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown under 1mA test current; defines safe DC switching headroom. |
| IC(MAX) | 100 mA - Absolute maximum continuous collector current per channel; sets upper limit for load drive capability. |
| hFE | 100–600 - DC current gain range at IC = 1mA, VCE = 5V; determines base drive requirements for saturation. |
| R1 | 32.9–61.1 kΩ - Tolerance range of integrated base resistor; impacts input current accuracy and noise immunity. |
| PD | 150 mW - Max power dissipation per device at +25°C ambient on standard FR4; constrains thermal design margin. |
| RθJA | 833 °C/W - Junction-to-ambient thermal resistance; indicates self-heating rise per milliwatt under defined PCB layout. |
| VCE(sat) | ≤0.3 V - Collector-emitter saturation voltage at IC/IB = 1mA/0.1mA; defines low-loss ON-state conduction. |
Pinout & Package
SOT563 is a 6-pin, dual-row surface-mount plastic package measuring 1.60 × 1.20 × 0.60 mm (L × W × H), with matte tin-plated leads rated for MIL-STD-202 solderability and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter 1 | Common emitter connection for first NPN transistor; referenced to ground in typical switch configuration. |
| 2 | Base 1 | Input node for first transistor; internally connected to 47kΩ resistor to Pin 3 (Collector 1). |
| 3 | Collector 1 | Output node for first transistor; tied to load supply rail in high-side switch topology. |
| 4 | Emitter 2 | Common emitter connection for second NPN transistor; electrically isolated from Pin 1. |
| 5 | Base 2 | Input node for second transistor; internally connected to 47kΩ resistor to Pin 6 (Collector 2). |
| 6 | Collector 2 | Output node for second transistor; enables dual independent switching in compact footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Dual NPN with integrated bias resistors | Eliminates four external resistors in logic-level switching designs, reducing BOM count and board area by ~2.5mm² per channel. |
| 47kΩ ±30% R1 tolerance | Ensures predictable base current across process variation while maintaining >100 hFE minimum at 1mA IC. |
| SOT563 package | Enables 0.5mm pitch routing and <0.02g unit weight - suitable for portable wearables and ultra-thin IoT sensor modules. |
| −55°C to +150°C operating range | Supports deployment in automotive cabin electronics and industrial motor controllers without derating below −40°C. |
Applications
| USB Port Protection Circuit | Smartphone Keypad Interface |
|---|---|
Use Scenario: Isolating USB data lines from ESD transients while enabling host-controlled pull-up activation. IC Role / Device Role: Dual NPN switch controlling 1.5kΩ pull-up resistors on D+ and D− lines based on microcontroller GPIO states. Use Value: Built-in 47kΩ bias resistors allow direct GPIO drive without external base resistors, reducing component count and layout complexity. | Use Scenario: Scanning mechanical keypad matrix in battery-powered handheld devices with minimal quiescent current. IC Role / Device Role: Row driver for 4×4 keypad, where each NPN channel sinks column current during active scan phase. Use Value: VCE(sat) ≤0.3V at 1mA ensures <0.3mW per switch loss, extending battery life in always-on key detection mode. |
| Industrial PLC Input Module | LED Status Indicator Driver |
Use Scenario: Converting 24V DC field signals to 3.3V logic levels for microcontroller input with galvanic isolation. IC Role / Device Role: Level-shifting interface between optocoupler outputs and MCU GPIO pins in DIN-rail mounted controllers. Use Value: 50V VCEO rating provides 2× safety margin over 24V industrial bus, eliminating need for external clamping diodes. | Use Scenario: Driving bi-color LED indicators (red/green) from low-voltage MCU outputs in medical diagnostic equipment. IC Role / Device Role: Independent current sink for each LED anode, with separate base control enabling color sequencing. Use Value: Dual-channel isolation prevents crosstalk between red/green segments, ensuring unambiguous status indication per IEC 62366 usability requirements. |
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 |
|---|---|---|---|
| NSVD144THFCT1G | Same SOT563 package, identical 47kΩ R1, but hFE min = 80 vs. 100; VCEO = 50V unchanged. | Lower hFE requires higher base drive current to guarantee saturation at 100mA loads. | Select when cost sensitivity outweighs marginal gain margin; verify IB ≥ 0.2mA in final design. |
| EMH11T2R | Smaller SOT-723 package (1.25 × 0.85 × 0.5mm), same 47kΩ R1, but PD = 125mW and RθJA = 1000°C/W. | Reduced thermal capability limits continuous operation above 75mA at +85°C ambient. | Prefer for ultra-miniature wearables where size trumps power handling; avoid in thermally constrained enclosures. |
Compared with NSVD144THFCT1G and EMH11T2R, DDC144TH-7-F offers superior hFE consistency and thermal robustness in the same SOT563 footprint - making it optimal for industrial control interfaces requiring reliable saturation across temperature and supply variation.
Availability
DDC144TH-7-F is available at Aetrix Electronics and suitable for USB port protection circuits, smartphone keypad interfaces, and industrial PLC input modules requiring stable component supply and long-term manufacturing continuity.
Supply support for DDC144TH-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The DDC series targets space-constrained digital interface applications, delivering pre-biased transistor solutions that reduce external component count while maintaining industrial-grade reliability and thermal performance.
FAQ
What is the maximum allowable base-emitter reverse voltage for DDC144TH-7-F?
The absolute maximum emitter-base breakdown voltage (BVEBO) is 5V at IE = 50μA, meaning the base-emitter junction must not be reverse-biased beyond this value to prevent permanent damage. This limits use in AC-coupled or negative-going signal paths without clamping.
Can DDC144TH-7-F drive a 10mA LED load directly from a 3.3V GPIO?
Yes - with VCE(sat) ≤0.3V and hFE ≥100 at IC = 1mA, the device saturates fully at 10mA with ~0.1mA base current. A 3.3V GPIO driving through the internal 47kΩ resistor delivers ~70μA, so an external 10kΩ base resistor is required to achieve full saturation.
Is the SOT563 package of DDC144TH-7-F compatible with reflow profiles for lead-free soldering?
Yes - the matte tin-plated leads meet MIL-STD-202 Method 208 solderability requirements and support standard Pb-free reflow profiles (peak 260°C, 60-second duration). J-STD-020 Level 1 moisture sensitivity confirms no bake preconditioning is needed prior to assembly.
Does DDC144TH-7-F support simultaneous conduction of both channels at 50mA each?
No - total power dissipation would reach 2 × (50mA × 0.3V) = 30mW, well within the 150mW per-element limit. However, thermal coupling in SOT563 means junction temperature rise scales with combined dissipation; sustained dual 50mA operation requires ambient ≤+70°C to stay within −55°C to +150°C TJ range.
DDC144TH-7-F 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):
- 47kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 100µA, 1mA
- Current - Collector Cutoff (Max):
- 500nA (ICBO)
- Frequency - Transition:
- 250MHz
- Power - Max:
- 150mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
DDC144TH-7-F FAQ
1.How can I place an order for DDC144TH-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDC144TH-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 DDC144TH-7-F reliable?
The price and inventory of DDC144TH-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 DDC144TH-7-F is usually 5 days.
3.What payment methods are accepted for DDC144TH-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDC144TH-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDC144TH-7-F?
DDC144TH-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDC144TH-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 DDC144TH-7-F?
For technical support, including DDC144TH-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDC144TH-7-F requirements.
6.How does Aetrix verify that DDC144TH-7-F is sourced from the original manufacturer or authorized distributors?
All DDC144TH-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 DDC144TH-7-F meets industry standards.
7.What is the process for return or replacement of DDC144TH-7-F?
All DDC144TH-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDC144TH-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 DDC144TH-7-F part is unused and in its original packaging.
Return procedure for DDC144TH-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDC144TH-7-F 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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