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Diodes Incorporated DT1446-04TS-7
- Part No.:
- DT1446-04TS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
DT1446-04TS-7.pdf
- Description:
- TVS DIODE 5VWM 8.5VC TSOT26
- Quantity:
- Payment:
- Shipping:
Inventory:141,035
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Product details
Overview
DT1446-04TS-7 from Diodes Incorporated is a 4-channel low-capacitance TVS diode array in TSOT26 package, designed for ESD protection of high-speed I/Os (USB 2.0, HDMI, IEEE1394) and VCC rail. It delivers ±16 kV contact / ±19 kV air ESD immunity per IEC 61000-4-2, 0.55 pF typical channel capacitance, and 4.7 A peak pulse current rating.
For engineers reviewing the DT1446-04TS-7 datasheet, DT1446-04TS-7 pinout, DT1446-04TS-7 application, or DT1446-04TS-7 equivalent, key selection criteria include I/O-to-VSS clamping voltage (8.5 V at 4.7 A), VCC-to-VSS ESD rating (±30 kV), low dynamic resistance (0.14 Ω on VCC path), and TSOT26 thermal performance (RθJA = 417 °C/W).
Technical Context
This device implements a monolithic silicon avalanche diode array with bidirectional protection architecture across four signal lines and one power rail. Each I/O channel features matched low-capacitance junctions optimized for <1 pF operation at 1 MHz and 2.5 V bias, while the VCC line integrates higher-energy surge handling (±30 kV ESD, 10 V clamping at 20 A TLP).
It operates within –55°C to +150°C ambient range and uses lead-free, halogen-free "Green" molding compound compliant with J-STD-020 Level 1 moisture sensitivity. The TSOT26 footprint supports high-density PCB layouts without compromising thermal dissipation under repetitive transient stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - Maximum DC operating voltage before leakage exceeds 5 µA on VCC–VSS or 1 µA per I/O–VSS path |
| VBR (min) | 6.0 V - Minimum breakdown voltage at 1 mA, ensuring reliable triggering above system supply rails |
| CI/O (typ) | 0.55 pF - Low input capacitance preserves signal integrity on USB 2.0 and HDMI differential pairs |
| IPP (I/O) | 4.7 A - Peak pulse current rating per I/O line under 8/20 µs waveform, defining surge energy handling |
| VC (I/O) | 8.5 V - Clamping voltage at 4.7 A, limiting transient overvoltage seen by protected IC inputs |
| VESD (VCC) | ±30 kV - Contact discharge ESD rating on VCC–VSS, exceeding IEC 61000-4-2 requirements for power rail robustness |
| RDIF (VCC) | 0.14 Ω - Dynamic resistance during TLP testing, indicating low impedance clamping for fast VCC transients |
Pinout & Package
Package: TSOT26 - 6-pin thin shrink small outline transistor package with 0.95 mm height, 2.90 mm × 2.80 mm body, 0.95 mm pitch, and UL 94V-0 rated green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 | First protected signal line; bidirectionally clamped between VSS and internal avalanche structure |
| 2 | VSS | Common ground reference for all I/O and VCC protection paths |
| 3 | I/O2 | Second protected signal line; electrically isolated but thermally coupled to adjacent channels |
| 4 | I/O3 | Third protected signal line; matched capacitance (<0.65 pF) ensures timing skew <1 ps across channels |
| 5 | I/O4 | Fourth protected signal line; identical layout symmetry minimizes crosstalk in high-speed routing |
| 6 | VCC | Power rail protection terminal; higher-energy clamping (10 V @ 20 A TLP) and lower RDIF (0.14 Ω) |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD Rating | ±16 kV contact / ±19 kV air on I/O–VSS; ±30 kV on VCC–VSS - exceeds industrial and consumer immunity standards |
| Channel Capacitance Matching | ΔC ≤ 0.05 pF across all I/Os at floating VCC - enables uniform signal propagation delay in multi-lane interfaces |
| Lead-Free & Green Compliance | No intentionally added lead; <900 ppm Br/Cl, <1000 ppm Sb - meets EU RoHS 2 and JEDEC JS709C halogen-free definitions |
| Thermal Performance | RθJA = 417 °C/W on FR-4 with AP02001 pad layout - supports sustained operation up to +125°C ambient in compact designs |
Applications
| USB 2.0 Interface Protection | HDMI Source Port Protection |
|---|---|
Use Scenario: Protecting D+ and D− data lines plus VBUS and ID pins on laptop or docking station USB ports. IC Role / Device Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 0.55 pF capacitance prevents signal rise-time degradation; 8.5 V clamping limits stress on USB PHY transceivers during ESD events. | Use Scenario: Shielding TMDS clock and data channels (3 pairs + CEC/HEAC) on HDMI source devices like set-top boxes. IC Role / Device Role: Array-level ESD clamp integrated into HDMI receptacle PCB layout with minimal trace length. Use Value: Matched channel capacitance ensures <1 ps inter-pair skew; ±19 kV air discharge rating covers handling-related ESD risks. |
| Laptop High-Speed I/O Hub | Flat Panel Display Timing Controller |
Use Scenario: Safeguarding SATA, PCIe, or eDP lanes routed through hinge or expansion connectors in ultrabooks. IC Role / Device Role: Localized surge suppression at board edge, co-located with EMI filters and common-mode chokes. Use Value: TSOT26 footprint allows placement within 3 mm of connector; 4.7 A IPP withstands multiple lightning-induced surges per IEC 61000-4-5. | Use Scenario: Protecting LVDS or mini-LVDS pixel clock and data buses between TCON and display panel in industrial monitors. IC Role / Device Role: Point-of-use TVS on flexible printed circuit (FPC) interface near display connector. Use Value: 0.14 Ω VCC-path dynamic resistance maintains stable VDD during fast transients; -55°C to +150°C rating supports extended temperature displays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J5.0A-Q | Single-channel SMA package; 5.0 V VRWM, 100 W PPP, 150 pF CJ | Requires four discrete devices for same channel count; unsuitable for space-constrained high-speed layouts | Select when discrete replacement or legacy board redesign is needed, not for new high-density designs |
| SP1006-04UTG | 4-channel SOT-23-6; 5.0 V VRWM, 0.6 pF CI/O, ±15 kV contact ESD | Lower ESD rating (±15 kV vs. ±16 kV); slightly higher capacitance (0.6 pF vs. 0.55 pF) | Choose for cost-sensitive applications where marginal ESD margin reduction is acceptable |
Compared with SMA6J5.0A-Q and SP1006-04UTG, DT1446-04TS-7 offers superior high-speed suitability via its 0.55 pF capacitance and ±16 kV contact ESD rating in a single TSOT26 package-enabling compact, high-fidelity protection for USB 2.0 and HDMI without sacrificing surge robustness or thermal performance.
Availability
DT1446-04TS-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI source port hardening, and flat panel display timing controller safeguarding requiring stable component supply across production lifecycles.
Supply support for DT1446-04TS-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DT1446 series belongs to Diodes' high-speed TVS portfolio, engineered specifically for ESD and surge protection of differential signaling interfaces operating up to 480 Mbps, with emphasis on low capacitance, tight parameter matching, and green compliance.
FAQ
What is the maximum operating temperature for DT1446-04TS-7?
The DT1446-04TS-7 is rated for continuous operation from –55°C to +150°C junction temperature. Its TSOT26 package achieves 417 °C/W thermal resistance on standard FR-4 with Diodes' AP02001 pad layout, enabling reliable use in automotive infotainment and industrial display environments where ambient temperatures exceed +85°C.
Does DT1446-04TS-7 protect both signal lines and power rails?
Yes - it provides dedicated protection for four independent I/O lines (pins 1, 3, 4, 5) and one VCC rail (pin 6), each with distinct clamping characteristics: I/O lines clamp at 8.5 V (4.7 A), while VCC clamps at 10 V (20 A TLP) with lower dynamic resistance (0.14 Ω), reflecting differentiated surge energy handling per path.
How does the 0.55 pF capacitance impact USB 2.0 signal integrity?
At 0.55 pF typical, the DT1446-04TS-7 introduces negligible loading on USB 2.0 differential pairs: insertion loss remains below 0.3 dB and eye diagram jitter increase is limited to <0.5% UI at 480 Mbps, preserving full compliance with USB IF electrical specifications when placed within 5 mm of the connector.
Is DT1446-04TS-7 compatible with lead-free reflow processes?
Yes - it is fully RoHS 2 compliant with lead-free plating and qualifies for standard Pb-free reflow profiles (peak 260°C, 60 sec max). Its moisture sensitivity level is J-STD-020 Level 1, eliminating bake requirements prior to assembly, and the TSOT26 package withstands repeated thermal cycling without delamination or solder joint fatigue.
DT1446-04TS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 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:
- TSOT-26
DT1446-04TS-7 FAQ
1.How can I place an order for DT1446-04TS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DT1446-04TS-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 DT1446-04TS-7 reliable?
The price and inventory of DT1446-04TS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DT1446-04TS-7 is usually 5 days.
3.What payment methods are accepted for DT1446-04TS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DT1446-04TS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DT1446-04TS-7?
DT1446-04TS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DT1446-04TS-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 DT1446-04TS-7?
For technical support, including DT1446-04TS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DT1446-04TS-7 requirements.
6.How does Aetrix verify that DT1446-04TS-7 is sourced from the original manufacturer or authorized distributors?
All DT1446-04TS-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 DT1446-04TS-7 meets industry standards.
7.What is the process for return or replacement of DT1446-04TS-7?
All DT1446-04TS-7 units undergo pre-shipment inspection (PSI). If there is an issue with DT1446-04TS-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 DT1446-04TS-7 part is unused and in its original packaging.
Return procedure for DT1446-04TS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DT1446-04TS-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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