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Diodes Incorporated DT1446-04V-7
- Part No.:
- DT1446-04V-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
DT1446-04V-7.pdf
- Description:
- TVS DIODE 5.5VWM 8.5VC SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:104,909
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Product details
Overview
DT1446-04V-7 from Diodes Incorporated is a 4-channel low-capacitance TVS diode array in SOT563 package, designed for ESD protection of high-speed I/O lines and VCC rail. It delivers 6V reverse working voltage, 0.55pF typical channel capacitance, ±16kV contact/±19kV air ESD immunity per I/O, and 4.7A peak pulse current handling per I/O-to-VSS path-enabling robust protection in USB 2.0 and HDMI interfaces.
For engineers reviewing the DT1446-04V-7 datasheet, DT1446-04V-7 pinout, DT1446-04V-7 application, or DT1446-04V-7 equivalent, key selection criteria include channel input capacitance (0.55pF typ), clamping voltage (8.5V at 4.7A), VBR (6.0–9.0V), ESD rating (±16kV contact), and SOT563 footprint compatibility with high-density PCB layouts.
Technical Context
This device integrates four bidirectional TVS diodes and one unidirectional VCC-to-VSS clamp in a single SOT563 package. Each I/O channel provides symmetrical ±16kV/±19kV ESD protection per IEC 61000-4-2, while the VCC line supports ±30kV ESD immunity and 10V clamping at 20A TLP.
Its low 0.55pF channel capacitance minimizes signal distortion on 480Mbps USB 2.0 and 1.65Gbps HDMI 1.3 differential pairs. Dynamic resistance is 0.3Ω per I/O and 0.2Ω on VCC, ensuring fast transient response and minimal voltage overshoot during 8/20µs surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.5V DC - maximum continuous operating voltage before leakage exceeds 5μA on I/O, safe for 5V logic rails |
| VBR (min) | 6.0V at 1mA - ensures reliable triggering above system supply noise margin without false clamping |
| CI/O (typ) | 0.55pF at 1MHz - preserves signal integrity on USB 2.0 full-speed and HDMI TMDS channels |
| IPP (I/O) | 4.7A, 8/20µs - withstands lightning-induced surges per IEC 61000-4-5 up to Level 3 |
| VC (I/O) | 8.5V at 4.7A - limits transient overvoltage to <1.7× VRWM, protecting downstream 5V transceivers |
| ESD Rating | ±16kV contact / ±19kV air - exceeds IEC 61000-4-2 Level 4 for handheld and docking interface reliability |
Pinout & Package
SOT563 is a 6-pin, 2.2mm × 1.35mm surface-mount plastic package with gull-wing leads, rated UL 94V-0, moisture sensitivity level 1, and matte tin-plated copper leadframe for RoHS-compliant reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 Anode | Input/output line 1 cathode-connected internally to common VSS; bidirectional ESD path |
| 2 | VSS | Common ground reference for all clamps; must be low-inductance connection to PCB ground plane |
| 3 | I/O2 Anode | Input/output line 2 cathode-connected to VSS; independent low-capacitance protection path |
| 4 | I/O3 Anode | Input/output line 3 cathode-connected to VSS; matched capacitance and clamping to other I/Os |
| 5 | I/O4 Anode | Input/output line 4 cathode-connected to VSS; identical electrical characteristics to pins 1/3/4 |
| 6 | VCC | Unidirectional anode-to-VSS clamp; protects power rail against ESD events up to ±30kV |
Key Features
| Feature | Design Value |
|---|---|
| Low channel capacitance | 0.55pF typical enables use on 480Mbps USB 2.0 and HDMI 1.3 differential data lines without signal degradation |
| High ESD immunity | ±16kV contact / ±19kV air per I/O meets IEC 61000-4-2 Level 4 for consumer and industrial end-equipment |
| VCC rail protection | Dedicated ±30kV ESD-rated clamp on pin 6 safeguards 5V power domains from coupling transients |
| Green packaging | Halogen- and antimony-free molding compound (<900ppm Br+Cl, <1000ppm Sb) satisfies strict environmental compliance mandates |
Applications
| USB 2.0 Interface Protection | HDMI 1.3 TMDS Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− data lines, ID pin, and VBUS in portable USB host/peripheral ports. IC Role / Device Role / Timing Role: Bidirectional TVS clamp on each I/O; unidirectional clamp on VBUS (VCC pin). Use Value: 0.55pF capacitance prevents rise-time degradation on 480Mbps signals; 8.5V clamping keeps transceiver ICs within absolute max ratings. | Use Scenario: Shielding TMDS clock and data channels (3 data + 1 clock) in flat-panel display interconnects. IC Role / Device Role / Timing Role: Four independent low-C TVS paths for TMDS+/- pairs; VCC pin clamps auxiliary 5V supply. Use Value: Matched 0.55pF capacitance across all channels maintains differential impedance and reduces skew-induced jitter. |
| Laptop Docking Connector | Mobile SIM Card Interface |
Use Scenario: ESD hardening of multi-function docking ports supporting USB, DisplayPort, and audio lines. IC Role / Device Role / Timing Role: Consolidated 4-channel I/O + VCC protection replaces discrete diodes, reducing BOM count and board area. Use Value: SOT563 footprint (2.2 × 1.35 mm) saves >60% board space vs. four individual SOD-323 devices. | Use Scenario: Safeguarding SIM VCC, I/O, CLK, and RST lines in smartphones and wearables against user-handling ESD. IC Role / Device Role / Timing Role: Low-leakage (1.0μA @ 5V) clamps preserve SIM card power budget and communication timing margins. Use Value: ±16kV contact ESD rating ensures >99.9% field reliability in high-touch mobile environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1006-04UTG | 0.8pF typical capacitance; 6.5V VRWM; ±15kV contact ESD | Higher capacitance limits use to ≤120Mbps interfaces; lower ESD rating reduces margin in ruggedized designs | Select when cost sensitivity outweighs USB 2.0/HDMI performance requirements |
| TPD4E001DPYR | 0.5pF typical capacitance; 5.5V VRWM; ±12kV contact ESD; integrated 100Ω series resistors | Series resistors add signal attenuation; lower ESD rating requires additional layout shielding | Prefer for legacy USB 1.1 or low-speed I²C where series termination is beneficial |
Compared with SP1006-04UTG and TPD4E001DPYR, DT1446-04V-7 offers the optimal balance of ultra-low capacitance (0.55pF), highest ESD rating (±16kV contact), and dedicated VCC clamping-making it uniquely suited for compact, high-reliability USB 2.0 and HDMI 1.3 implementations where signal fidelity and surge margin are co-critical.
Availability
DT1446-04V-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.3 TMDS line hardening, and laptop docking connector ESD mitigation requiring stable component supply and long-term lifecycle assurance.
Supply support for DT1446-04V-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 protection, signal integrity, and power management solutions for consumer, computing, and industrial markets.
The DT1446-04V belongs to Diodes' high-speed TVS diode array product line, engineered specifically for ESD-hardened interfaces in space-constrained portable electronics where sub-1pF capacitance and ±16kV contact immunity are mandatory.
FAQ
What is the maximum recommended trace length between DT1446-04V-7 and protected I/O pins?
For optimal ESD performance, keep PCB traces from each I/O pin to its corresponding DT1446-04V-7 terminal under 3mm. Longer traces increase inductance, raising clamping voltage during fast transients; the device's 0.3Ω dynamic resistance assumes minimal parasitic inductance in the return path to VSS.
Can DT1446-04V-7 protect both 3.3V and 5V I/O systems?
Yes-its 5.5V reverse working voltage (VRWM) and 6.0V minimum breakdown voltage allow safe operation on both 3.3V and 5V logic rails. At 3.3V, leakage remains <1.0μA; at 5V, leakage is ≤5.0μA, well within standard GPIO drive capability.
Is the VCC pin intended for clamping only, or can it supply power?
The VCC pin (pin 6) is a unidirectional ESD clamp only-it connects internally to VSS via a diode and cannot source or sink steady-state current. It must be tied directly to the protected 5V rail; no decoupling capacitor should be placed between VCC and VSS, as that would degrade clamping response.
How does DT1446-04V-7 perform under repeated ESD stress?
Per Diodes' qualification testing, DT1446-04V-7 withstands ≥1000 cycles of ±16kV contact discharge without parameter shift beyond spec limits. Its robust silicon structure and low thermal resistance (327°C/W) prevent cumulative degradation during sequential ESD events in real-world docking/unplugging scenarios.
DT1446-04V-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOT-563, SOT-666
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 8.5V
- Current - Peak Pulse (10/1000µs):
- 4.7A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- HDMI
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
DT1446-04V-7 FAQ
1.How can I place an order for DT1446-04V-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DT1446-04V-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 DT1446-04V-7 reliable?
The price and inventory of DT1446-04V-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DT1446-04V-7 is usually 5 days.
3.What payment methods are accepted for DT1446-04V-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DT1446-04V-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DT1446-04V-7?
DT1446-04V-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DT1446-04V-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 DT1446-04V-7?
For technical support, including DT1446-04V-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DT1446-04V-7 requirements.
6.How does Aetrix verify that DT1446-04V-7 is sourced from the original manufacturer or authorized distributors?
All DT1446-04V-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 DT1446-04V-7 meets industry standards.
7.What is the process for return or replacement of DT1446-04V-7?
All DT1446-04V-7 units undergo pre-shipment inspection (PSI). If there is an issue with DT1446-04V-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 DT1446-04V-7 part is unused and in its original packaging.
Return procedure for DT1446-04V-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DT1446-04V-7 Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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