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onsemi SZESD8351XV2T5G
- Part No.:
- SZESD8351XV2T5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZESD8351XV2T5G.pdf
- Description:
- TVS DIODE 3.3VWM 11.2VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:9,450
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Product details
Overview
SZESD8351XV2T5G 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 provides ±15 kV IEC 61000-4-2 contact ESD protection and is AEC-Q101 qualified for automotive applications including USB 2.0 and eSATA interfaces.
For engineers reviewing the SZESD8351XV2T5G datasheet, pinout, applications, or equivalent options, key selection criteria include low clamping voltage under transient stress, sub-0.6 pF signal-line capacitance, latch-up-free operation in USB 2.0 HS/FS, and SOD-523 package compatibility with high-density PCB layouts.
Technical Context
The SZESD8351XV2T5G employs a snap-back SCR-based structure optimized for fast turn-on during ESD transients while maintaining stable holding voltage (1.15 V) and low dynamic resistance (0.62 Ω anode-to-cathode). Its TLP-tested clamping behavior ensures predictable voltage limiting across 5–16 A pulse currents, aligning with IEC 61000-4-2 Level 4 (±15 kV air) requirements.
Designed specifically for voltage-sensitive serial interfaces, it avoids latch-up in USB 2.0 LS/FS/HS and DisplayPort by meeting SCR latch-up free load-line criteria: minimum 3.301 V breakdown voltage and 1.76 mA holding current. It is explicitly excluded for HDMI due to potential latch-up risk per onsemi's load-line analysis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 3.3 V - Maximum continuous DC voltage applied without leakage degradation or premature conduction. |
| Junction Capacitance | 0.55 pF max @ 0 V, 1 MHz - Enables minimal signal distortion on USB 2.0 (480 Mbps) and eSATA (3 Gbps) data lines. |
| Clamping Voltage | 8.2 V @ 5 A, 8/20 µs - Limits transient overvoltage to safe levels for downstream 3.3 V logic receivers. |
| ESD Withstand | ±15 kV contact / ±15 kV air (IEC 61000-4-2 Level 4) - Meets industrial and automotive system-level ESD immunity requirements. |
| Breakdown Voltage | 5.5–7.8 V @ 1 mA - Ensures robust margin above 3.3 V operating rail while enabling fast snap-back initiation. |
| Holding Voltage | 1.15 V - Sustains low-voltage conduction post-trigger to prevent thermal runaway and support latch-up-free USB 2.0 operation. |
Pinout & Package
SZESD8351XV2T5G is packaged in SOD-523 (Case 502), measuring 1.20 mm × 0.80 mm × 0.60 mm with 0.5 mm pitch. This ultra-compact surface-mount package supports high-density routing and automated placement in space-constrained portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | ESD Current Sink Node | Connected to protected I/O line; conducts ESD surge toward ground during positive transients. |
| 2 (Anode) | Ground Reference Terminal | Connected directly to system ground plane; completes low-inductance return path for ESD current. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive temperature range (−55 °C to +125 °C) and PPAP-capable manufacturing flow. |
| Ultra-Low Capacitance | 0.55 pF max preserves signal integrity on 480 Mbps USB 2.0 and 3 Gbps eSATA without added jitter or rise-time degradation. |
| Latch-Up Free for USB 2.0 | Meets onsemi's SCR load-line criteria (VBR ≥ 3.301 V, IHOLD ≥ 1.76 mA) ensuring stable single-point operation in LS/FS/HS modes. |
| Low Clamping Voltage | 8.2 V at 5 A enables reliable protection of 3.3 V I/O cells without overstressing gate oxides or input clamp diodes. |
Applications
| USB 2.0 Interface Protection | eSATA Data Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pairs in portable USB peripherals and host controllers against user-handling ESD events. IC Role / Device Role: Bidirectional transient voltage suppressor placed between connector and PHY IC. Use Value: 0.55 pF capacitance prevents signal integrity loss at 480 Mbps; ±15 kV contact rating exceeds IEC 61000-4-2 Level 4 system compliance. |
Use Scenario: Shielding eSATA TX/RX lanes in external storage enclosures from cable-discharge ESD events. IC Role / Device Role: Low-capacitance shunt diode array connected I/O-to-GND on each high-speed lane. Use Value: 8.2 V clamping at 5 A limits transient overshoot below 3.3 V receiver absolute maximum ratings; SOD-523 footprint fits tight connector-side layout. |
| Automotive Infotainment USB Ports | Industrial Control Panel Interfaces |
Use Scenario: Securing front-panel USB ports in automotive head units exposed to dry-climate ESD during passenger insertion. IC Role / Device Role: AEC-Q101-compliant ESD clamp integrated into USB 2.0 signal path before USB transceiver. Use Value: −55 °C to +125 °C operating range matches vehicle cabin thermal profile; SZ-prefix denotes automotive-grade traceability and process control. |
Use Scenario: Hardening human-machine interface (HMI) USB ports on factory-floor HMIs subject to repeated operator contact discharge. IC Role / Device Role: Primary ESD defense layer on board-level USB connectors, upstream of internal protection networks. Use Value: 1.15 V holding voltage ensures no latch-up during repetitive 4 kV contact discharges; RoHS/Pb-free compliance meets industrial environmental mandates. |
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; non-SZ prefix indicates standard commercial qualification (not AEC-Q101). | Not approved for automotive use; lacks PPAP documentation and site-specific control change tracking. | Select when automotive qualification is unnecessary and cost sensitivity favors commercial-grade sourcing. |
| ESD8004MUT5G | Lower capacitance (0.25 pF), higher VBR (min 5.9 V), same SOD-523 package; also latch-up free for USB 2.0 and DisplayPort. | Better suited for 5 Gbps+ interfaces; rated for ±20 kV IEC 61000-4-2 contact, exceeding SZESD8351XV2T5G's ±15 kV. | Choose for next-gen USB 3.0 SS or DisplayPort 1.2 where lower capacitance and higher ESD margin are critical. |
Compared with SZESD8351XV2T5G, ESD8351XV2T5G offers identical protection performance but lacks automotive qualification, while ESD8004MUT5G delivers superior high-frequency performance and higher ESD withstand-making it preferable for future-proofing beyond USB 2.0.
Availability
SZESD8351XV2T5G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment systems, and industrial HMI designs requiring stable component supply and long-term lifecycle support despite its discontinued status.
Supply support for SZESD8351XV2T5G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZESD8351XV2T5G belongs to the ESD8000 Series, engineered specifically for latch-up-free, ultra-low-capacitance ESD protection of high-speed serial interfaces including USB, eSATA, and DisplayPort in harsh environments.
FAQ
What is the primary function of the SZESD8351XV2T5G in circuit design?
The SZESD8351XV2T5G serves as a bidirectional ESD protection diode placed between high-speed data lines (e.g., USB 2.0 D+/D−) and ground. Its role is to clamp transient voltages during electrostatic discharge events to safe levels-specifically 8.2 V at 5 A-while adding minimal capacitance (0.55 pF) that preserves signal integrity. The SZESD8351XV2T5G achieves this using a snap-back SCR structure validated for latch-up-free operation in USB 2.0 applications.
Is the SZESD8351XV2T5G still in active production?
No, the SZESD8351XV2T5G is officially marked as discontinued per onsemi's datasheet revision 13 (November 2025). However, Aetrix Electronics maintains legacy inventory and supports ongoing production programs through controlled allocation, traceable sourcing, and BOM continuity planning for customers dependent on this AEC-Q101-qualified device.
Why is the SZESD8351XV2T5G not recommended for HDMI applications?
The SZESD8351XV2T5G is excluded for HDMI because its SCR-based snap-back structure may enter a second stable operating point under TMDS load-line conditions, creating latch-up risk. onsemi's analysis confirms that HDMI 1.4/1.3a TMDS interfaces require higher holding current (≥54.78 mA) and different VBR/IH thresholds-met by ESD8104 or ESD8040-not the SZESD8351XV2T5G.
What does the "SZ" prefix signify in SZESD8351XV2T5G?
Per onsemi documentation, the "SZ" prefix in SZESD8351XV2T5G indicates automotive-grade qualification: AEC-Q101 certification, PPAP capability, and unique site-and-control-change requirements for process traceability. This distinguishes it from the commercial ESD8351XV2T5G variant, which shares identical electrical specs but lacks automotive validation and documentation rigor.
How does the SZESD8351XV2T5G achieve latch-up-free operation in USB 2.0?
The SZESD8351XV2T5G meets onsemi's latch-up free SCR criteria for USB 2.0: minimum 3.301 V breakdown voltage and ≥1.76 mA holding current. These parameters ensure the device's IV curve intersects the USB 2.0 load line at only one stable point (VOP, IOP), preventing dual-state operation. This design is verified in the datasheet's Table 1 and Figure 7, confirming suitability for USB 2.0 LS/FS/HS modes-but not HDMI.
SZESD8351XV2T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-79, SOD-523
- Series:
- ESD8351
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 (Typ)
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- USB 2.0
- 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
SZESD8351XV2T5G FAQ
1.How can I place an order for SZESD8351XV2T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD8351XV2T5G 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 SZESD8351XV2T5G reliable?
The price and inventory of SZESD8351XV2T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD8351XV2T5G is usually 5 days.
3.What payment methods are accepted for SZESD8351XV2T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD8351XV2T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD8351XV2T5G?
SZESD8351XV2T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD8351XV2T5G 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 SZESD8351XV2T5G?
For technical support, including SZESD8351XV2T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD8351XV2T5G requirements.
6.How does Aetrix verify that SZESD8351XV2T5G is sourced from the original manufacturer or authorized distributors?
All SZESD8351XV2T5G 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 SZESD8351XV2T5G meets industry standards.
7.What is the process for return or replacement of SZESD8351XV2T5G?
All SZESD8351XV2T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD8351XV2T5G, 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 SZESD8351XV2T5G part is unused and in its original packaging.
Return procedure for SZESD8351XV2T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESD8351XV2T5G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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