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onsemi SZESD9X3.3ST5G
- Part No.:
- SZESD9X3.3ST5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOD-923
- Datasheet:
-
SZESD9X3.3ST5G.pdf
- Description:
- TVS DIODE 3.3VWM 10.4VC SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:12,442
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Product details
Overview
SZESD9X3.3ST5G from onsemi is a unidirectional ESD protection diode designed to safeguard voltage-sensitive IC inputs in portable electronics. It features a 3.3 V working peak reverse voltage (VRWM), clamping voltage of 10.4 V at 9.8 A peak pulse current, <1 ns response time, and IEC 61000-4-2 Level 4 (±30 kV contact) compliance - deployed in USB data lines, HDMI interfaces, and touchscreen controllers.
For engineers reviewing the SZESD9X3.3ST5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 8/20 µs surge, low capacitance (80 pF), SOD-923 footprint compatibility, and AEC-Q101 qualification for automotive infotainment I/O protection.
Technical Context
This device operates as a single-channel, cathode-anode configured transient voltage suppressor optimized for high-speed signal lines. Its unidirectional architecture provides precise clamping above VRWM while maintaining sub-1 nA leakage at 3.3 V and 25 °C, enabling integration into 1.8 V/3.3 V logic interfaces without signal distortion.
The SOD-923 package enables placement adjacent to connectors or IC pads with minimal parasitic inductance. Clamping behavior is characterized using the IEC 61000-4-2 waveform (30 ns rise, 60 ns decay), with verified VC = 10.4 V at IPP = 9.8 A - ensuring downstream ICs experience no more than 10.4 V during worst-case ±30 kV ESD events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - Maximum continuous reverse voltage before conduction; matches 3.3 V I/O rail operation without leakage-induced power loss. |
| VC @ IPP | 10.4 V @ 9.8 A - Peak clamped voltage during IEC 61000-4-2 surge; limits stress on protected IC's absolute maximum rating. |
| Capacitance | 80 pF @ 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) and HDMI 1.4 signal integrity with minimal insertion loss. |
| ESD Rating | ±30 kV contact per IEC 61000-4-2 Level 4 - Exceeds industrial immunity requirements for handheld device interfaces. |
| Response Time | <1 ns - Fast enough to clamp ESD transients before they propagate into sensitive analog or digital circuitry. |
| Package | SOD-923 (1.0 × 0.6 × 0.43 mm) - Enables placement within 2 mm of I/O connector pins to minimize trace inductance. |
Pinout & Package
Package: SOD-923 - ultra-small surface-mount plastic case (Case 514AB), 100% matte tin lead finish, MSL 1 rated, compatible with 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked Band) | Cathode | Connected to protected line (e.g., USB D+); conducts during positive ESD transients to ground. |
| 2 | Anode | Connected to system ground; completes clamping path for both polarities when used with complementary biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Voltage | 10.4 V at 9.8 A ensures protected ICs remain below 12 V absolute maximum ratings during full IEC 61000-4-2 stress. |
| AEC-Q101 Qualified | Validated for automotive infotainment and ADAS sensor interfaces requiring extended temperature (-55 °C to +150 °C) reliability. |
| Ultra-Low Capacitance | 80 pF enables use on high-speed differential pairs (e.g., MIPI D-PHY) without degrading eye diagram margin. |
| Pb-Free & RoHS Compliant | Meets global environmental regulations; matte Sn finish ensures solderability and wire-bond compatibility. |
Applications
| USB 2.0 Data Lines | HDMI 1.4 Interface |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB transceivers in smartphones and OTG adapters against user-hand ESD. IC Role / Device Role: Unidirectional clamping diode placed between connector and PHY, referenced to local ground plane. Use Value: Limits transient voltage to 10.4 V, preventing latch-up or gate oxide damage in 3.3 V USB PHYs while adding only 80 pF loading. | Use Scenario: Shielding TMDS clock and data channels in portable media players from cable-discharge events. IC Role / Device Role: Per-channel ESD shunt mounted directly at HDMI receptacle, minimizing stub length. Use Value: Maintains signal integrity up to 165 MHz with sub-1 ns response, meeting HDMI 1.4 compliance for hot-plug robustness. |
| Automotive Touchscreen I/O | Industrial Sensor Interface |
Use Scenario: Guarding capacitive touch controller GPIOs in vehicle center-stack displays exposed to glove-contact ESD. IC Role / Device Role: Point-of-entry protection on I²C SDA/SCL lines, leveraging AEC-Q101 qualification for under-hood thermal cycling. Use Value: Survives 150 °C junction temperature and ±30 kV contact discharge without parametric shift or failure. | Use Scenario: Securing RS-485 transceiver inputs in factory automation PLC modules subjected to maintenance-tool ESD. IC Role / Device Role: Bidirectional protection via dual-diode configuration (anode-to-ground + cathode-to-rail), enabled by low leakage (2.5 nA). Use Value: Prevents false triggering or bus lockup during field servicing while drawing negligible standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9X3.3ST5G | Same electrical specs and SOD-923 package; non-automotive grade, no AEC-Q101 validation. | Lacks PPAP documentation and automotive temperature screening; suitable for consumer-grade designs only. | Select when cost sensitivity outweighs automotive qualification requirements. |
| TPD2E001DRYR | Bi-directional, 12 pF capacitance, 5.5 V VRWM, X2SON package (1.0 × 0.8 mm). | Better suited for high-speed USB 3.0 or MIPI lanes where ultra-low capacitance is critical. | Choose for differential signal paths needing symmetric clamping and <15 pF loading. |
Compared with ESD9X3.3ST5G and TPD2E001DRYR, SZESD9X3.3ST5G uniquely combines AEC-Q101 qualification, 3.3 V VRWM alignment with legacy 3.3 V I/Os, and proven 10.4 V clamping under full IEC 61000-4-2 stress - making it optimal for automotive infotainment and industrial HMI front-ends where reliability trumps ultra-low capacitance.
Availability
SZESD9X3.3ST5G is available at Aetrix Electronics and suitable for USB interface protection, automotive touchscreen I/O hardening, and industrial sensor signal conditioning requiring stable component supply across long-lifecycle programs.
Supply support for SZESD9X3.3ST5G 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The ESD9X Series - including SZESD9X3.3ST5G - was engineered specifically for space-constrained, high-reliability ESD protection in portable and automotive electronics, emphasizing low clamping voltage, fast response, and AEC-Q101 compliance.
FAQ
What is the clamping voltage of SZESD9X3.3ST5G under IEC 61000-4-2 testing?
The SZESD9X3.3ST5G exhibits a clamping voltage (VC) of 10.4 V at a peak pulse current (IPP) of 9.8 A, measured per the IEC 61000-4-2 8/20 µs waveform. This value is confirmed in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 10, February 2024) and ensures protected ICs remain within safe operating voltage limits during ±30 kV contact discharge events.
Is SZESD9X3.3ST5G suitable for automotive applications?
Yes, SZESD9X3.3ST5G is AEC-Q101 qualified and PPAP capable, with validated operation across −55 °C to +150 °C junction temperature. Its SZ-prefix denotes automotive-specific process controls and site qualifications, making it appropriate for infotainment displays, ADAS sensor interfaces, and body control modules where ESD robustness and thermal reliability are mandatory.
What package type does SZESD9X3.3ST5G use, and what are its dimensions?
SZESD9X3.3ST5G uses the SOD-923 package (Case 514AB), measuring 1.0 mm × 0.6 mm × 0.43 mm max. This ultra-compact outline is specified in the Mechanical Case Outline diagram on page 4 of the datasheet and supports high-density PCB layouts near connectors or IC pads without compromising ESD suppression efficacy.
How does the capacitance of SZESD9X3.3ST5G affect high-speed signal integrity?
SZESD9X3.3ST5G has a typical capacitance of 80 pF at 0 V and 1 MHz. While higher than some ultra-low-capacitance alternatives, this value is acceptable for USB 2.0 (480 Mbps), HDMI 1.4 (165 MHz), and I²C interfaces - verified by onsemi's application notes AND8307/D and AND8308/D - and avoids signal degradation when placed with short, controlled-impedance traces.
What is the maximum peak pulse current SZESD9X3.3ST5G can handle?
SZESD9X3.3ST5G is rated for a maximum reverse peak pulse current (IPP) of 9.8 A under the standardized 8/20 µs surge waveform. This rating is derived from the Ppk = 102 W specification (Ppk = VC × IPP) and is validated per IEC 61000-4-2 test conditions, ensuring reliable single-event energy absorption without parametric shift or failure.
SZESD9X3.3ST5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOD-923
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 10.4V
- Current - Peak Pulse (10/1000µs):
- 9.8A (8/20µs)
- Power - Peak Pulse:
- 102W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 80pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
SZESD9X3.3ST5G FAQ
1.How can I place an order for SZESD9X3.3ST5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD9X3.3ST5G 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 SZESD9X3.3ST5G reliable?
The price and inventory of SZESD9X3.3ST5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD9X3.3ST5G is usually 5 days.
3.What payment methods are accepted for SZESD9X3.3ST5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD9X3.3ST5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD9X3.3ST5G?
SZESD9X3.3ST5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD9X3.3ST5G 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 SZESD9X3.3ST5G?
For technical support, including SZESD9X3.3ST5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD9X3.3ST5G requirements.
6.How does Aetrix verify that SZESD9X3.3ST5G is sourced from the original manufacturer or authorized distributors?
All SZESD9X3.3ST5G 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 SZESD9X3.3ST5G meets industry standards.
7.What is the process for return or replacement of SZESD9X3.3ST5G?
All SZESD9X3.3ST5G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD9X3.3ST5G, 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 SZESD9X3.3ST5G part is unused and in its original packaging.
Return procedure for SZESD9X3.3ST5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESD9X3.3ST5G Tags
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