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onsemi SZESD5Z3.3T1G
- Part No.:
- SZESD5Z3.3T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZESD5Z3.3T1G.pdf
- Description:
- TVS DIODE 3.3VWM 14.1VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:37,326
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Product details
Overview
SZESD5Z3.3T1G from onsemi is a unidirectional ESD protection diode in SOD-523 package, featuring 3.3 V working peak reverse voltage (VRWM), 8.4 V breakdown voltage (VBR) at 1 mA, 14.1 V clamping voltage (VC) at 5 A IPP, 105 pF capacitance, and IEC 61000-4-2 Level 4 (±30 kV contact) compliance - deployed for USB data line and HDMI interface protection in portable consumer electronics.
For engineers reviewing the SZESD5Z3.3T1G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 5 A surge, sub-110 pF signal-line capacitance, AEC-Q101 qualification for automotive infotainment interfaces, and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
The SZESD5Z3.3T1G operates as a unidirectional transient voltage suppression diode, leveraging silicon avalanche structure to clamp ESD transients before they reach downstream ICs. Its low 3.3 V VRWM enables use on 3.3 V logic rails without leakage-induced bias shift, while 14.1 V VC at 5 A ensures safe voltage limiting during IEC 61000-4-2 8/20 µs surges.
Designed for board-level ESD hardening, it delivers <1 ns response time and meets Class 3 HBM (>16 kV) and IEC 61000-4-4 Level 4 (40 A EFT) requirements. The device's 105 pF capacitance is optimized for high-speed digital interfaces up to 480 Mbps without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3 V - Maximum continuous reverse voltage before leakage exceeds 0.05 µA; matches 3.3 V I/O rail operation. |
| VBR @ IT=1 mA | 5.0 V min - Ensures reliable turn-on above normal operating voltage but below IC absolute maximum ratings. |
| VC @ IPP=5 A | 14.1 V - Clamped voltage during 8/20 µs surge; keeps protected IC within safe SOA during ±8 kV contact discharge. |
| C @ 0 V, 1 MHz | 105 pF - Low enough to avoid signal rise-time degradation on USB 2.0 or SDIO lines. |
| IEC 61000-4-2 | ±30 kV contact - Full Level 4 compliance; eliminates need for secondary system-level ESD mitigation. |
| HBM ESD Rating | >16 kV - Meets Class 3 requirement; protects against human-hand discharge during handling and assembly. |
| Package | SOD-523 (1.20 × 0.80 × 0.60 mm) - Enables placement adjacent to connectors on space-constrained mobile PCBs. |
Pinout & Package
SOD-523 surface-mount package with cathode-indicated polarity band; 0.7 mm body height supports automated optical inspection and reflow soldering per MSL 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Protected Line Anode Connection | Connected to I/O line (e.g., USB D+); conducts surge current to ground when transient exceeds VRWM. |
| 2 (Anode) | Ground Reference Terminal | Direct low-inductance connection to system ground plane required to achieve specified clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping voltage | 14.1 V at 5 A ensures downstream 3.3 V logic ICs remain within safe operating area during ±30 kV ESD events. |
| Ultra-low leakage | 0.05 µA max at 3.3 V prevents DC bias shift or power drain in always-on sensor or communication interfaces. |
| AEC-Q101 qualified | Validated for automotive infotainment and telematics modules requiring extended temperature (-55°C to +150°C) reliability. |
| Pb-free & RoHS compliant | 100% matte tin lead finish enables lead-free reflow processing without whisker risk or intermetallic concerns. |
| Sub-1 ns response | Activates before ESD pulse front reaches protected IC, eliminating need for additional RC filtering or layout guard rings. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting USB D+/D− lines in smartphones and OTG adapters against repeated plug/unplug ESD events. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed directly at USB connector, shunting transients to ground before reaching USB PHY. Use Value: 105 pF capacitance avoids signal integrity loss at 480 Mbps; 14.1 V VC prevents PHY latch-up during ±30 kV contact discharge. | Use Scenario: Safeguarding HDMI TMDS channels in portable projectors and docking stations exposed to user-hand ESD. IC Role / Device Role / Timing Role: Per-lane ESD suppressor mounted within 3 mm of HDMI receptacle, referenced to clean digital ground. Use Value: Low 105 pF loading preserves differential signal rise/fall times; AEC-Q101 rating supports automotive-grade HDMI displays. |
| Automotive Infotainment Display Port | SD Card Interface Protection |
Use Scenario: Shielding LVDS or FPD-Link video data lines in vehicle head units from ESD induced by passenger interaction. IC Role / Device Role / Timing Role: Point-of-entry protection on display cable connectors, leveraging unidirectional architecture for DC-biased video signals. Use Value: 3.3 V VRWM aligns with display driver supply; -55°C to +150°C TJ range ensures operation across automotive thermal cycles. | Use Scenario: Securing SDIO command/data lines in industrial handhelds where card insertion generates frequent ESD. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional diode (anode grounded) protecting multi-bit SD bus against contact discharge. Use Value: 0.05 µA leakage prevents false SD detection; 14.1 V VC maintains SD controller reset threshold margin during surge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z3.3T1G | No SZ prefix; commercial grade only (not AEC-Q101 qualified); identical electrical specs and SOD-523 package. | Limited to non-automotive consumer devices; lacks PPAP documentation support. | Select when automotive qualification and traceability are not required; lower cost for high-volume portable electronics. |
| TPD2E001DRYR | 2-channel array in X2SON-4; 12 pF typical capacitance; 12 V VC at 1 A; no AEC-Q101 rating. | Better suited for ultra-high-speed interfaces (e.g., USB 3.0); insufficient clamping strength for 5 A surges. | Choose for dual-line protection with minimal capacitance; avoid where IEC 61000-4-2 Level 4 or 5 A surge handling is mandatory. |
Compared with ESD5Z3.3T1G and TPD2E001DRYR, SZESD5Z3.3T1G uniquely combines AEC-Q101 qualification, 5 A surge capability, and 105 pF capacitance - making it optimal for automotive and industrial USB/HDMI interfaces where both robustness and signal fidelity are required.
Availability
SZESD5Z3.3T1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment displays, and portable HDMI device design requiring stable component supply and long-term lifecycle assurance.
Supply support for SZESD5Z3.3T1G 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The ESD5Z Series, including SZESD5Z3.3T1G, was engineered specifically for board-level ESD hardening in space-constrained portable and automotive electronics - prioritizing low capacitance, fast response, and automotive-grade reliability.
FAQ
What is the clamping voltage of SZESD5Z3.3T1G at 5 A peak pulse current?
The SZESD5Z3.3T1G exhibits a maximum clamping voltage (VC) of 14.1 V when subjected to a 5 A peak pulse current (IPP) under IEC 61000-4-2 8/20 µs waveform conditions. This value is measured at TA = 25°C and ensures protected circuitry remains within safe operating limits during high-energy ESD events. The 14.1 V VC is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet for SZESD5Z3.3T1G.
Is SZESD5Z3.3T1G qualified for automotive applications?
Yes, SZESD5Z3.3T1G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the onsemi datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements. It operates across −55°C to +150°C junction temperature range and meets stringent automotive reliability standards - making it suitable for infotainment, ADAS camera links, and telematics modules.
What is the capacitance of SZESD5Z3.3T1G and how does it affect high-speed interfaces?
SZESD5Z3.3T1G has a maximum capacitance of 105 pF at 0 V and 1 MHz, as specified in the datasheet's Electrical Characteristics table. This value is carefully balanced to provide effective ESD suppression while minimizing signal distortion on interfaces such as USB 2.0 (480 Mbps) and HDMI TMDS lanes. At this capacitance level, rise-time degradation remains within acceptable limits for these protocols.
Does SZESD5Z3.3T1G support bidirectional ESD protection?
No, SZESD5Z3.3T1G is a unidirectional ESD protection diode, designed for DC-biased signal lines like USB D+ or HDMI TMDS+ where the anode is tied to ground. Its electrical characteristics - including VRWM = 3.3 V and VBR = 5.0 V min - reflect single-polarity operation. For true bidirectional protection, a different device such as SZESD7371MUTAG would be required.
What package type and dimensions does SZESD5Z3.3T1G use?
SZESD5Z3.3T1G uses the SOD-523 package (Case 502, Style 1), measuring 1.20 mm × 0.80 mm × 0.60 mm with a 0.7 mm body height. The package features a cathode band marking, matte tin lead finish, and MSL 1 moisture sensitivity rating - enabling standard Pb-free reflow profiles up to 260°C. Mechanical drawings are provided in the onsemi datasheet on page 5.
SZESD5Z3.3T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-79, SOD-523
- 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:
- 14.1V
- Current - Peak Pulse (10/1000µs):
- 11.2A (8/20µs)
- Power - Peak Pulse:
- 158W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 105pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZESD5Z3.3T1G FAQ
1.How can I place an order for SZESD5Z3.3T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD5Z3.3T1G 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 SZESD5Z3.3T1G reliable?
The price and inventory of SZESD5Z3.3T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD5Z3.3T1G is usually 5 days.
3.What payment methods are accepted for SZESD5Z3.3T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD5Z3.3T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD5Z3.3T1G?
SZESD5Z3.3T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD5Z3.3T1G 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 SZESD5Z3.3T1G?
For technical support, including SZESD5Z3.3T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD5Z3.3T1G requirements.
6.How does Aetrix verify that SZESD5Z3.3T1G is sourced from the original manufacturer or authorized distributors?
All SZESD5Z3.3T1G 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 SZESD5Z3.3T1G meets industry standards.
7.What is the process for return or replacement of SZESD5Z3.3T1G?
All SZESD5Z3.3T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD5Z3.3T1G, 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 SZESD5Z3.3T1G part is unused and in its original packaging.
Return procedure for SZESD5Z3.3T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESD5Z3.3T1G Tags
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