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onsemi SZESD8351XV2T1G
- Part No.:
- SZESD8351XV2T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZESD8351XV2T1G.pdf
- Description:
- TVS DIODE 3.3VWM 11.2VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:7,996
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Product details
Overview
SZESD8351XV2T1G from onsemi is an ultra-low-capacitance ESD protection diode designed for high-speed data lines, featuring 0.55 pF max junction capacitance (at 0 V, 1 MHz), 3.3 V reverse working voltage, and 8.2 V clamping voltage at 5 A peak pulse current. It delivers ±15 kV IEC 61000-4-2 contact ESD protection and is AEC-Q101 qualified for automotive applications including USB 2.0 interfaces.
For engineers reviewing the SZESD8351XV2T1G datasheet, pinout, applications, or equivalent options, key selection criteria include low signal distortion (sub-0.6 pF), latch-up-free operation in USB 2.0 HS/FS, compliance with ISO 10605 and IEC 61000-4-2 Level 4, and SOD-523 package compatibility with high-density PCB layouts.
Technical Context
The SZESD8351XV2T1G employs a snap-back SCR-based structure optimized for transient suppression without latch-up in USB 2.0 LS/FS and HS signaling paths. Its dynamic resistance of 0.59 Ω (anode-to-cathode) and holding voltage of 1.15 V ensure rapid turn-on and stable clamping during ESD events.
Designed specifically for voltage-sensitive, high-bandwidth data lines, it maintains signal integrity via sub-0.55 pF capacitance at DC–2.5 GHz and supports IEC 61000-4-2 Level 4 (±15 kV air) while operating across −55 °C to +125 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 3.3 V - Matches USB 2.0 I/O rail voltage, preventing leakage or conduction during normal operation. |
| Junction Capacitance | 0.55 pF max @ 0 V, 1 MHz - Minimizes signal attenuation and timing skew on 480 Mbps USB 2.0 HS lines. |
| Clamping Voltage | 8.2 V @ 5 A, 8/20 µs - Limits transient overvoltage to safe levels for downstream PHY transceivers. |
| ESD Withstand | ±15 kV IEC 61000-4-2 contact - Meets industrial and automotive end-equipment surge immunity requirements. |
| Operating Temperature | −55 °C to +125 °C - Supports under-hood automotive and extended-temperature industrial deployments. |
| Holding Voltage | 1.15 V - Ensures automatic recovery post-ESD event without sustained latch-up current. |
| Dynamic Resistance | 0.59 Ω (anode-to-cathode) - Enables fast voltage collapse and low power dissipation during clamping. |
Pinout & Package
SZESD8351XV2T1G is housed in a Pb-free SOD-523 package (1.20 mm × 0.80 mm × 0.60 mm), optimized for space-constrained USB port routing and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | ESD Clamp Output | Connected to protected I/O line; sinks ESD current to GND when triggered above breakdown voltage. |
| 2 (Anode) | Ground Reference | Direct connection to system ground plane; forms low-inductance return path for transient current. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.55 pF max ensures <0.1 dB insertion loss at 480 MHz, preserving USB 2.0 eye diagram integrity. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD stress per JESD47. |
| Latch-up free operation | Proven stable in USB 2.0 HS/FS load lines per AND9116/D; avoids destructive sustained conduction. |
| Low clamping voltage | 8.2 V @ 5 A limits voltage overshoot below 3.3 V rail + 5 V margin, protecting sensitive PHY inputs. |
| IEC/ISO dual compliance | Meets both IEC 61000-4-2 Level 4 (±15 kV air) and ISO 10605 (±30 kV, 330 pF/2 kΩ) test standards. |
Applications
| USB 2.0 Interface Protection | eSATA Data Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD events in consumer and automotive infotainment systems. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point, before USB PHY IC. Use Value: Prevents PHY damage from ±15 kV contact discharge while maintaining <480 Mbps signal fidelity via 0.55 pF capacitance. |
Use Scenario: Shielding eSATA differential pair (TX/RX) from ESD in external storage enclosures and docking stations. IC Role / Device Role / Timing Role: Low-capacitance clamp on each signal line referenced to chassis ground, minimizing jitter and reflection. Use Value: Enables full 3 Gbps eSATA link stability with <0.55 pF loading and 8.2 V clamping at 5 A pulse. |
| Automotive Body Control Module | Industrial USB Hub Controller |
Use Scenario: Safeguarding USB ports in vehicle-mounted telematics units exposed to harsh ESD environments (e.g., dashboard connectors). IC Role / Device Role / Timing Role: AEC-Q101-qualified ESD shunt on USB 2.0 lines, integrated into CAN/USB gateway modules. Use Value: Guarantees functional safety compliance and long-term reliability across −40 °C to +105 °C ambient operation. |
Use Scenario: Protecting upstream/downstream USB ports in DIN-rail mounted industrial hubs used in factory automation. IC Role / Device Role / Timing Role: Primary ESD interface device on all four USB 2.0 lanes, placed adjacent to USB switch ICs. Use Value: Eliminates field failures due to operator-induced ESD while supporting continuous 24/7 operation at 85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD8351XV2T5G | Same electrical specs and SOD-523 package; discontinued per datasheet Rev. 13 (Nov. 2025). | Identical use in USB 2.0/eSATA; not recommended for new designs due to obsolescence status. | Select SZESD8351XV2T1G for active production with AEC-Q101 support and full lifecycle availability. |
| ESD8004MUT5G | Lower capacitance (0.40 pF), higher VBR (min 5.5 V), same SOD-523 footprint but different marking and tape/reel quantity (10,000 pcs). | Better suited for HDMI 1.4 TMDS lanes requiring latch-up immunity; not rated for automotive PPAP. | Choose ESD8004MUT5G only if lower capacitance is critical and automotive qualification is unnecessary. |
Compared with ESD8351XV2T5G (discontinued) and ESD8004MUT5G (non-automotive), SZESD8351XV2T1G uniquely combines AEC-Q101 qualification, active supply status, and verified latch-up-free operation in USB 2.0 HS/FS-making it the optimal choice for automotive and industrial USB interface protection.
Availability
SZESD8351XV2T1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive body control modules, and industrial USB hub controllers requiring stable component supply and long-term manufacturing continuity.
Supply support for SZESD8351XV2T1G 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZESD8351XV2T1G belongs to onsemi's ESD8000 series of SCR-based protection devices, engineered specifically for latch-up-free, high-speed data line protection in USB, DisplayPort, and eSATA systems.
FAQ
What is the maximum junction capacitance of SZESD8351XV2T1G and why does it matter for USB 2.0?
The maximum junction capacitance of SZESD8351XV2T1G is 0.55 pF at 0 V and 1 MHz. This ultra-low value minimizes signal degradation and timing skew on 480 Mbps USB 2.0 high-speed differential pairs, preserving eye diagram margins and ensuring reliable link training. Higher capacitance would increase insertion loss and jitter, risking packet errors or enumeration failure.
Is SZESD8351XV2T1G qualified for automotive applications?
Yes, SZESD8351XV2T1G is AEC-Q101 qualified and PPAP capable, with testing covering high-temperature operating life, temperature cycling, and ESD robustness per automotive reliability standards. Its −55 °C to +125 °C operating junction temperature range and SZ-prefix designation confirm suitability for under-hood and infotainment systems.
Does SZESD8351XV2T1G support latch-up free operation in USB 2.0 High-Speed mode?
Yes, SZESD8351XV2T1G is explicitly validated for latch-up free operation in USB 2.0 High-Speed (480 Mbps) applications per onsemi Application Note AND9116/D. Its SCR-based snap-back structure intersects the USB 2.0 HS load line at a single stable point, eliminating risk of destructive sustained conduction after ESD events.
What is the clamping voltage of SZESD8351XV2T1G at 5 A peak pulse current?
The clamping voltage of SZESD8351XV2T1G is 8.2 V at 5 A peak pulse current (tp = 8/20 µs). This value reflects the maximum voltage seen by the protected IC during an ESD transient and is critical for ensuring downstream components-such as USB PHYs rated for 3.3 V ±10%-remain within safe operating limits.
Which package type does SZESD8351XV2T1G use and what are its dimensions?
SZESD8351XV2T1G uses the SOD-523 package (Case 502), measuring 1.20 mm × 0.80 mm × 0.60 mm with 0.7 mm lead pitch. This compact, surface-mount outline enables dense routing near USB connectors and compatibility with standard 0402-sized pick-and-place equipment.
SZESD8351XV2T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-79, SOD-523
- Series:
- ESD8351
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 0.4pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZESD8351XV2T1G FAQ
1.How can I place an order for SZESD8351XV2T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD8351XV2T1G 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 SZESD8351XV2T1G reliable?
The price and inventory of SZESD8351XV2T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD8351XV2T1G is usually 5 days.
3.What payment methods are accepted for SZESD8351XV2T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD8351XV2T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD8351XV2T1G?
SZESD8351XV2T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD8351XV2T1G 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 SZESD8351XV2T1G?
For technical support, including SZESD8351XV2T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD8351XV2T1G requirements.
6.How does Aetrix verify that SZESD8351XV2T1G is sourced from the original manufacturer or authorized distributors?
All SZESD8351XV2T1G 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 SZESD8351XV2T1G meets industry standards.
7.What is the process for return or replacement of SZESD8351XV2T1G?
All SZESD8351XV2T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD8351XV2T1G, 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 SZESD8351XV2T1G part is unused and in its original packaging.
Return procedure for SZESD8351XV2T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESD8351XV2T1G Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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DESD5V0U1BA-7
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DESD5V0U1BB-7
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D12V0L1B2LP-7B
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PESD2V0Y1BSFYL
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