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Diodes Incorporated DT1446-04S-7
- Part No.:
- DT1446-04S-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DT1446-04S-7.pdf
- Description:
- TVS DIODE 5VWM 8.5VC SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:30,854
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Product details
Overview
DT1446-04S-7 from Diodes Incorporated is a 4-channel low-capacitance TVS diode array in SOT363 package, designed to protect high-speed I/O lines (USB 2.0, HDMI, IEEE1394) and VCC rail with 0.55 pF typical channel capacitance, ±16 kV contact ESD rating, and 4.7 A peak pulse current capability.
For engineers reviewing the DT1446-04S-7 datasheet, DT1446-04S-7 pinout, DT1446-04S-7 application, or DT1446-04S-7 equivalent, key selection criteria include I/O-to-VSS clamping voltage (8.5 V at 4.7 A), VCC-to-VSS ESD robustness (±30 kV air/contact), low capacitance matching for signal integrity, and SOT363 footprint compatibility with high-density PCB layouts.
Technical Context
This device integrates four bidirectional TVS diodes for I/O protection plus one unidirectional diode for VCC line protection, enabling simultaneous safeguarding of five nodes in compact form. Its low dynamic resistance (0.3 Ω I/O-to-VSS, 0.14 Ω VCC-to-VSS) ensures rapid voltage clamping during transient events.
The architecture supports dual-mode ESD suppression: IEC 61000-4-2 compliant (±16 kV contact, ±19 kV air) and IEC 61000-4-5 lightning surge rated (4.7 A, 8/20 µs). Channel capacitance remains stable across bias conditions-0.55 pF at VCC = 5 V and 0.65 pF when VCC is floating-critical for maintaining signal fidelity in high-speed interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 6.0–9.0 V at 1 mA; triggers protection before downstream ICs exceed absolute max ratings. |
| Reverse Working Voltage (VRWM) | 5.0 V max; sets maximum DC operating voltage without leakage degradation. |
| Channel Capacitance (CI/O) | 0.55 pF typ at 1 MHz, VCC = 5 V; preserves signal rise/fall times in USB 2.0/HDMI links. |
| Clamping Voltage (VC_I/O) | 8.5 V max at 4.7 A, 8/20 µs; limits transient overvoltage seen by protected IC pins. |
| ESD Rating (Contact) | ±16 kV I/O-to-VSS per IEC 61000-4-2; exceeds industrial immunity requirements. |
| VCC ESD Rating | ±30 kV VCC-to-VSS; provides robust power-rail surge suppression for system-level compliance. |
| Thermal Resistance (RθJA) | 625 °C/W on FR-4 with AP02001 pad layout; defines safe power dissipation margin under repeated surges. |
Pinout & Package
SOT363 package: 6-pin, surface-mount, lead-free, halogen-free, moisture sensitivity level 1. Dimensions per AP02002: 2.10 mm × 1.30 mm × 0.95 mm (L×W×H), 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O1 Anode | Input/output line 1 cathode-connected to common VSS; enables bidirectional clamping. |
| 2 | VSS | Common ground reference for all TVS paths; must be low-inductance connection. |
| 3 | I/O2 Anode | Input/output line 2 cathode-connected to VSS; independent clamping path. |
| 4 | VCC | Power rail anode input; unidirectional clamping to VSS for supply-line protection. |
| 5 | I/O3 Anode | Input/output line 3 cathode-connected to VSS; third independent I/O channel. |
| 6 | I/O4 Anode | Input/output line 4 cathode-connected to VSS; fourth independent I/O channel. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD robustness | ±16 kV contact / ±19 kV air on I/O lines-meets EN 61000-6-2 immunity requirements. |
| Low channel capacitance | 0.55 pF typical at 1 MHz-minimizes signal distortion in 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.3. |
| VCC line protection | Dedicated unidirectional diode with ±30 kV ESD rating-prevents power-rail upset during system-level ESD events. |
| Green packaging | Halogen- and antimony-free, RoHS-compliant molding compound (UL 94V-0)-supports environmental compliance programs. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− data lines, ID pin, and VBUS rail in portable USB host/peripheral ports. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor for differential signaling pairs and unidirectional clamp for 5 V supply rail. Use Value: Maintains <100 ps signal delay and <0.55 pF loading while surviving >10,000 ESD strikes per IEC 61000-4-2. | Use Scenario: Safeguarding TMDS clock and data channels (CLK+, CLK−, DATA0+, DATA0−, etc.) in flat-panel display interconnects. IC Role / Device Role / Timing Role: Low-capacitance TVS array placed at connector side to shunt ESD before reaching HDMI receiver IC. Use Value: Enables full 1.65 Gbps bandwidth retention with <0.1 dB insertion loss at 750 MHz due to sub-0.65 pF capacitance. |
| IEEE 1394 (FireWire) Port | Laptop SIM Card Slot |
Use Scenario: Shielding TPB and TPA differential pair, RPB and RPA receive lines, and VDD in legacy FireWire 400 interfaces. IC Role / Device Role / Timing Role: Four-channel bidirectional TVS with shared VSS reference, plus dedicated VCC clamp for 3.3 V logic supply. Use Value: Prevents latch-up in PHY transceivers during ±15 kV human-body-model discharges without degrading 400 Mbps eye diagram margins. | Use Scenario: Securing SIM_VCC, SIM_RST, SIM_CLK, SIM_IO, and SIM_GND lines against ESD in ultra-thin notebook card readers. IC Role / Device Role / Timing Role: Compact 6-pin TVS array replacing discrete diodes to meet space-constrained SIM slot layouts. Use Value: Reduces board area by 65% versus four 0402 TVS + one 0402 VCC diode solution while achieving identical ±16 kV contact ESD performance. |
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 | 0.35 pF typical capacitance; lower clamping voltage (7.5 V at 4.7 A); same SOT363 package. | Better suited for >1 Gbps interfaces (e.g., USB 3.0 Gen1) where sub-0.4 pF is required. | Select when signal integrity at >1 GHz dominates over cost or legacy interface compatibility. |
| TPD4E001DPVR | 0.7 pF typical capacitance; higher VRWM (5.5 V); integrated ESD protection only (no VCC clamp). | Requires external VCC TVS; optimized for space-constrained mobile SoC I/O banks with no dedicated VCC line protection need. | Choose when VCC protection is handled separately and board area is more constrained than capacitance budget. |
Compared with SP1006-04UTG and TPD4E001DPVR, DT1446-04S-7 uniquely combines VCC rail clamping, 0.55 pF I/O capacitance, and ±30 kV VCC ESD rating-making it optimal for systems requiring integrated power-and-signal protection in standard USB/HDMI designs without sacrificing bandwidth.
Availability
DT1446-04S-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line safeguarding, and laptop SIM card slot ESD hardening requiring stable component supply across production lifecycles.
Supply support for DT1446-04S-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 DT1446-04S belongs to Diodes' high-speed ESD protection product line, engineered specifically for preserving signal integrity in multi-gigabit serial interfaces while delivering certified IEC 61000-4-2/4-5 immunity.
FAQ
What is the maximum operating temperature range for DT1446-04S-7?
The DT1446-04S-7 operates reliably from −55 °C to +150 °C, with thermal derating beginning above +25 °C ambient per Figure 1 in DS37407 Rev. 2. Its 625 °C/W junction-to-ambient resistance assumes use of Diodes' AP02001 PCB pad layout on 2 oz copper FR-4.
Does DT1446-04S-7 provide bidirectional protection on all four I/O channels?
Yes-pins 1, 3, 5, and 6 each connect to the anode of a bidirectional TVS diode referenced to VSS (pin 2), enabling symmetric clamping for both positive and negative transients on I/O1–I/O4. Pin 4 (VCC) connects to a unidirectional diode anode for positive-only surge suppression.
How does the channel capacitance vary between powered and floating VCC conditions?
At 1 MHz and 2.5 V bias, channel capacitance is 0.55 pF typical when VCC = 5 V, and increases to 0.65 pF typical when VCC is floating-verified in Electrical Characteristics Table, Note 7. This variation is within ±0.05 pF and does not impact USB 2.0 or HDMI 1.3 timing budgets.
Is DT1446-04S-7 suitable for automotive applications?
No-DT1446-04S-7 is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or PPAP documentation. It is intended for commercial and industrial applications including consumer laptops, monitors, and peripherals per its specified −55 °C to +150 °C operating range.
DT1446-04S-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- 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:
- SOT-363
DT1446-04S-7 FAQ
1.How can I place an order for DT1446-04S-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DT1446-04S-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 DT1446-04S-7 reliable?
The price and inventory of DT1446-04S-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DT1446-04S-7 is usually 5 days.
3.What payment methods are accepted for DT1446-04S-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DT1446-04S-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DT1446-04S-7?
DT1446-04S-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DT1446-04S-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 DT1446-04S-7?
For technical support, including DT1446-04S-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DT1446-04S-7 requirements.
6.How does Aetrix verify that DT1446-04S-7 is sourced from the original manufacturer or authorized distributors?
All DT1446-04S-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 DT1446-04S-7 meets industry standards.
7.What is the process for return or replacement of DT1446-04S-7?
All DT1446-04S-7 units undergo pre-shipment inspection (PSI). If there is an issue with DT1446-04S-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 DT1446-04S-7 part is unused and in its original packaging.
Return procedure for DT1446-04S-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DT1446-04S-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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