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Diodes Incorporated DESDA5V3LQ-7
- Part No.:
- DESDA5V3LQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DESDA5V3LQ-7.pdf
- Description:
- TVS DIODE 3VWM SOT23 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
DESDA5V3LQ from Diodes Incorporated is a dual-channel surface-mount TVS array designed for ESD protection of high-speed data lines in automotive infotainment systems. It features a 5.3V minimum reverse breakdown voltage, 20A peak pulse current (8/20μs), 220pF channel input capacitance, and ±9kV contact / ±16kV air ESD immunity per IEC 61000-4-2 - deployed in HDMI inputs and USB modules.
For engineers reviewing the DESDA5V3LQ datasheet, DESDA5V3LQ pinout, DESDA5V3LQ application, or DESDA5V3LQ equivalent, key selection criteria include low clamping voltage under transient stress, dual-channel integration for space-constrained PCB layouts, AEC-Q101 qualification for automotive reliability, and sub-250pF capacitance to preserve signal integrity on 1Gbps+ interfaces.
Technical Context
This dual-channel TVS array uses bidirectional avalanche diode structures per channel to clamp transient overvoltages before they reach downstream ICs. Each channel operates with symmetrical breakdown (±5.3V min) and delivers 250W peak pulse power handling at 8/20μs waveform.
Its SOT23-3 package integrates two independent TVS elements sharing a common cathode configuration, enabling compact protection of differential pairs like USB D+/D− or HDMI TMDS lanes without requiring external routing of ground return paths for each channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Min) | 5.3 V - Ensures reliable turn-on before damage threshold of 3.3V/5V interface ICs |
| IPP (Max) | 20 A - Withstands automotive-level ESD surges per ISO 10605 (8/20μs) |
| CIN | 220 pF - Low enough to avoid signal degradation on HDMI 1.4/USB 2.0 channels |
| ESD Rating | ±9 kV contact / ±16 kV air - Meets IEC 61000-4-2 Level 4 for system-level immunity |
| PPP | 250 W - Sustains repeated transients without parametric shift or failure |
| Operating Temp | −55°C to +150°C - Validated for under-hood and display module environments |
Pinout & Package
Package: SOT23-3, surface-mount, lead-free, halogen-free, RoHS-compliant plastic case with UL 94V-0 rating and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode Channel 1 | Connects to protected line (e.g., USB D+); clamps positive transients to common cathode |
| Pin 2 | Cathode (Common) | Shared cathode node tied to system ground; enables dual-channel integration in 3-pin footprint |
| Pin 3 | Anode Channel 2 | Connects to second protected line (e.g., USB D−); mirrors Pin 1 behavior with matched VBR |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel monolithic integration | Reduces PCB area by 40% vs. discrete TVS diodes while ensuring matched clamping characteristics |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity bias, and mechanical shock per stress test requirements |
| Low dynamic resistance (0.28Ω typ) | Minimizes clamping voltage overshoot during fast-rising ESD events (<1ns rise time) |
| Green compound & lead-free plating | Complies with RoHS 3 (2015/863/EU), halogen-free (<900ppm Br/Cl), and PPAP documentation support |
Applications
| HDMI 1.4 Interface Protection | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting TMDS clock and data lanes in automotive head unit displays against ESD coupling from connectors and touch surfaces. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping transients before they propagate into HDMI receiver ICs. Use Value: 220pF capacitance preserves signal rise/fall times for 165MHz pixel clocks; ±16kV air discharge rating exceeds OEM ESD test requirements. | Use Scenario: Safeguarding USB host/device ports in infotainment control modules from user-hand ESD events during cable insertion. IC Role / Device Role / Timing Role: Dual-anode-to-common-cathode structure protects D+ and D− differentially without skew. Use Value: Matched VBR (5.3V min) ensures simultaneous clamping, preventing data corruption during ±9kV contact discharge. |
| Automotive Infotainment Console | Industrial Touchscreen Controller |
Use Scenario: Integrated protection for multiple high-speed interfaces (HDMI, USB, LVDS) within space-limited center console PCBs. IC Role / Device Role / Timing Role: Single-component solution replacing two discrete TVS devices per interface pair. Use Value: SOT23-3 footprint reduces layout complexity and eliminates inter-channel trace length mismatch. | Use Scenario: ESD hardening of USB and display interface lines in factory-floor HMIs exposed to charged personnel and tools. IC Role / Device Role / Timing Role: Robust transient suppression across −40°C to +85°C operating range with no derating up to 75°C ambient. Use Value: 150°C max junction temperature supports sealed enclosure thermal profiles without active cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J5.0A | Single-channel, higher VBR (5.0V min), larger SMA package (4.5×2.7mm) | Requires two devices and more PCB area; lacks integrated dual-channel symmetry | Select only if board space permits discrete placement and channel matching is not required |
| TPD2E001DRYR | Same SOT23-3 footprint, lower CIN (11pF), but rated only to ±8kV contact ESD | Better for high-speed USB 3.0; insufficient for automotive AEC-Q101 or HDMI 1.4 robustness | Prefer for consumer-grade USB ports where ESD margin and temperature range are less stringent |
Compared with SMA6J5.0A and TPD2E001DRYR, DESDA5V3LQ uniquely combines AEC-Q101 qualification, dual-channel symmetry in SOT23-3, and 220pF/20A balance - making it optimal for automotive HDMI/USB interfaces where footprint, reliability, and signal integrity are jointly constrained.
Availability
DESDA5V3LQ is available at Aetrix Electronics and suitable for automotive infotainment systems, HDMI interface protection, and USB 2.0 data line hardening requiring stable component supply across extended temperature and ESD stress conditions.
Supply support for DESDA5V3LQ 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 DESDA5V3LQ belongs to Diodes' Automotive-Grade TVS Array product line, engineered specifically for ESD and surge protection in high-reliability vehicle subsystems including infotainment, ADAS sensors, and body electronics.
FAQ
What is the maximum clamping voltage of DESDA5V3LQ at 20A IPP?
The typical clamping voltage (VC) is 12.5V at IPP = 20A (8/20μs waveform), measured per Figure 2 in DS40328 Rev. 1–2. This value ensures safe operation below the absolute maximum ratings of standard 3.3V and 5V interface ICs when subjected to automotive-grade transients.
Can DESDA5V3LQ be used for USB 3.0 or HDMI 2.0 interfaces?
No - its 220pF channel capacitance exceeds the <10pF requirement for USB 3.0 SuperSpeed lanes and HDMI 2.0's 6Gbps channels. It is validated for HDMI 1.4 (165MHz) and USB 2.0 (480Mbps), where capacitance-induced jitter remains within specification limits.
Does DESDA5V3LQ require external series impedance for optimal ESD performance?
No external series resistor is required. Its low dynamic resistance (0.28Ω typ) and fast response (<1ns) enable direct placement adjacent to connectors. However, layout best practices - such as short traces, solid ground plane, and minimized loop area - remain critical to achieve full IEC 61000-4-2 ±16kV air discharge performance.
How does the common-cathode configuration affect circuit design?
The shared cathode (Pin 2) must be connected directly to a low-inductance system ground plane. This configuration prevents ground bounce between channels during simultaneous transients and eliminates need for separate cathode traces - simplifying layout while maintaining matched clamping thresholds across both protected lines.
DESDA5V3LQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V
- Voltage - Breakdown (Min):
- 5.3V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 250W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 220pF @ 1MHz (Max)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DESDA5V3LQ-7 FAQ
1.How can I place an order for DESDA5V3LQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESDA5V3LQ-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 DESDA5V3LQ-7 reliable?
The price and inventory of DESDA5V3LQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESDA5V3LQ-7 is usually 5 days.
3.What payment methods are accepted for DESDA5V3LQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESDA5V3LQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESDA5V3LQ-7?
DESDA5V3LQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESDA5V3LQ-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 DESDA5V3LQ-7?
For technical support, including DESDA5V3LQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESDA5V3LQ-7 requirements.
6.How does Aetrix verify that DESDA5V3LQ-7 is sourced from the original manufacturer or authorized distributors?
All DESDA5V3LQ-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 DESDA5V3LQ-7 meets industry standards.
7.What is the process for return or replacement of DESDA5V3LQ-7?
All DESDA5V3LQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESDA5V3LQ-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 DESDA5V3LQ-7 part is unused and in its original packaging.
Return procedure for DESDA5V3LQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESDA5V3LQ-7 Tags
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