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onsemi SZESD9C5.0ST5G
- Part No.:
- SZESD9C5.0ST5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOD-923
- Datasheet:
-
SZESD9C5.0ST5G.pdf
- Description:
- ESD PROTECTION DIODES, SOD-923 A
- Quantity:
- Payment:
- Shipping:
Inventory:5,180
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Product details
Overview
SZESD9C5.0ST5G from onsemi is a unidirectional ESD protection diode in SOD-923 package, featuring 5.0 V working peak reverse voltage (VRWM), 6.0 pF typical capacitance at 1 MHz, clamping voltage ≤11.0 V at 1 A IPP, <1 ns response time, and IEC61000-4-2 Level 4 (±8 kV contact) compliance - deployed for USB data lines, HDMI interfaces, and portable device I/O ports.
For engineers reviewing the SZESD9C5.0ST5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under IEC61000-4-2 pulse, low capacitance for high-speed signal integrity, stand-off voltage matching system rail, AEC-Q101 qualification for automotive use, and SOD-923 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates as a unidirectional transient voltage suppressor, leveraging silicon avalanche breakdown to clamp ESD transients before they reach downstream ICs. Its cathode-anode polarity enables integration into single-rail signal paths where ground-referenced protection is required.
The SOD-923 package supports automated placement and provides thermal dissipation sufficient for 150 mW peak power handling per FR-5 board conditions. It meets Class 3 HBM (>16 kV) and IEC61000-4-2 Level 4 (±8 kV contact/±15 kV air) without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - Maximum continuous reverse voltage before leakage exceeds 0.5 μA; matches 5 V logic and interface rails. |
| VC @ IPP = 1 A | ≤11.0 V - Clamped voltage during IEC61000-4-2 pulse; limits stress on protected IC input stages. |
| C @ 1 MHz, 0 V | 6.0 pF (typ), 6.2 pF (max) - Enables use on USB 2.0 (480 Mbps) and HDMI DDC lines without signal distortion. |
| Response Time | <1 ns - Ensures protection activation prior to propagation of ESD-induced voltage overshoot. |
| ESD Rating | IEC61000-4-2 Level 4 (±8 kV contact); HBM Class 3 (>16 kV) - Validated for handheld and automotive infotainment port exposure. |
| Package | SOD-923 (1.0 mm × 0.60 mm × 0.37 mm) - Compatible with 0201-class pick-and-place equipment and ultra-dense layout routing. |
Pinout & Package
SOD-923 surface-mount package with 0.40 mm max body height, 1.0 mm × 0.60 mm footprint, and gull-wing lead form. Cathode marked by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected line (e.g., USB D+); conducts during positive ESD event to ground. |
| 2 | Anode | Connected to system ground; completes current path during clamping; defines unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low Capacitance | 6.0 pF typical - Preserves signal edge rate and eye diagram integrity on 480 Mbps USB 2.0 lines. |
| AEC-Q101 Qualified | Validated for automotive cabin electronics including touchscreens and USB-C ports per PPAP requirements. |
| Ultra-Small Footprint | 1.0 mm × 0.60 mm - Reduces PCB area by >50% vs. SOD-523, enabling routing under fine-pitch connectors. |
| Fast Clamping Response | <1 ns turn-on - Activates before ESD waveform peak (tP = 0.7–1 ns), preventing latch-up in protected ICs. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protection of USB 2.0 D+ and D− lines against user-handling ESD in smartphones and docking stations. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between signal line and ground, triggered only on overvoltage events. Use Value: 6.0 pF capacitance avoids signal rise-time degradation; 11.0 V clamping prevents damage to USB PHY ESD structures. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) I²C bus lines (SCL/SDA) in monitors and set-top boxes. IC Role / Device Role / Timing Role: Standby-mode ESD suppressor with sub-μA leakage, preserving I²C pull-up bias and bus timing. Use Value: 0.5 μA max leakage at 5.0 V VRWM ensures reliable I²C communication without bus contention or timeout errors. |
| Automotive Infotainment Ports | Portable Medical Device Sensors |
Use Scenario: ESD hardening of USB-C and auxiliary audio jacks in vehicle head units exposed to dry-climate static discharge. IC Role / Device Role / Timing Role: AEC-Q101-qualified transient suppressor mounted directly at connector entry point. Use Value: ±8 kV IEC61000-4-2 contact rating and -55°C to +150°C operating range ensure reliability across automotive temperature cycles. | Use Scenario: Protecting analog sensor inputs (e.g., pulse oximeter photodiode amplifiers) from ESD during clinical handling. IC Role / Device Role / Timing Role: Low-leakage, low-capacitance guard on high-impedance front-end nodes. Use Value: 0.5 μA leakage preserves DC accuracy; 6.0 pF capacitance avoids gain error in 100 kΩ–1 MΩ sensor feedback networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9B5.0ST5G | Bidirectional configuration; same VRWM (5.0 V), but symmetric clamping (VC = 14.5 V both polarities); 8.5 pF typical capacitance. | Suitable for AC-coupled or differential lines (e.g., USB 3.0, Ethernet) requiring bidirectional suppression. | Select when protecting balanced or floating signals where polarity reversal may occur. |
| CM1213A-03SO | 3-channel array in SOT-23-6; 5.5 V VRWM; 12 pF typical; higher 15 kV HBM rating but larger 2.9 mm × 1.6 mm footprint. | Used where multiple lines (e.g., HDMI TMDS + CEC + HPD) require coordinated protection in one package. | Choose for multi-line consolidation; avoid if board space or single-line optimization is critical. |
Compared with ESD9B5.0ST5G and CM1213A-03SO, SZESD9C5.0ST5G delivers lowest capacitance and smallest footprint for single-line 5 V rail protection, making it optimal for space-limited USB 2.0 and automotive I/O where unidirectional clamping suffices.
Availability
SZESD9C5.0ST5G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment port hardening, and portable medical sensor front-end safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for SZESD9C5.0ST5G 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.
SZESD9C5.0ST5G belongs to the ESD9C Series - a family of micro-packaged unidirectional ESD suppressors engineered specifically for high-speed digital interfaces in space-constrained portable and automotive systems.
FAQ
What is the maximum clamping voltage of SZESD9C5.0ST5G under IEC61000-4-2 testing?
The SZESD9C5.0ST5G exhibits a maximum clamping voltage (VC) of 11.0 V when subjected to a 1 A peak pulse current per IEC61000-4-2 test conditions. This value is measured across the device terminals during the ESD transient event and ensures downstream ICs experience limited overvoltage stress. The SZESD9C5.0ST5G maintains this performance across its full operating temperature range and is validated per Level 4 (±8 kV contact) requirements.
Is SZESD9C5.0ST5G qualified for automotive applications?
Yes, SZESD9C5.0ST5G carries the "SZ" prefix indicating AEC-Q101 qualification and PPAP capability. It is rated for junction temperatures from −55°C to +150°C and has passed stress tests including HTOL, temperature cycling, and ESD robustness per automotive standards. The SZESD9C5.0ST5G is explicitly intended for use in automotive infotainment, telematics, and body electronics where ESD immunity and reliability are critical.
What is the capacitance of SZESD9C5.0ST5G and how does it affect high-speed signal integrity?
SZESD9C5.0ST5G has a typical capacitance of 6.0 pF and a maximum of 6.2 pF at 0 V and 1 MHz. This low value minimizes loading on high-speed lines such as USB 2.0 (480 Mbps), preserving signal rise time, reducing jitter, and maintaining eye diagram margin. At 480 Mbps, the SZESD9C5.0ST5G introduces negligible insertion loss and does not require equalization or re-timing in standard PCB trace lengths up to 15 cm.
How is the polarity configured on SZESD9C5.0ST5G, and why does it matter for circuit design?
SZESD9C5.0ST5G is a unidirectional diode with Pin 1 as cathode and Pin 2 as anode. This configuration allows conduction only during positive transients on the protected line relative to ground - essential for single-supply I/O protection where negative excursions are not expected. Correct orientation ensures effective clamping without forward-biasing during normal operation, avoiding DC loading or signal distortion that would occur with reversed placement.
Does SZESD9C5.0ST5G meet IEC61000-4-2 Level 4, and what does that mean for end-product certification?
Yes, SZESD9C5.0ST5G is rated for IEC61000-4-2 Level 4: ±8 kV contact discharge and ±15 kV air discharge. This means the device can reliably suppress ESD events at these levels without failure, contributing directly to system-level pass/fail compliance in final product testing. When placed at I/O entry points per layout guidelines, the SZESD9C5.0ST5G helps achieve robust immunity in handheld, medical, and automotive devices seeking CE, FCC, or UN/ECE R10 certification.
SZESD9C5.0ST5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOD-923
- Series:
- ESD9C3.3ST5G
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 11V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- Automotive
- Capacitance @ Frequency:
- 6pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
SZESD9C5.0ST5G FAQ
1.How can I place an order for SZESD9C5.0ST5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD9C5.0ST5G 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 SZESD9C5.0ST5G reliable?
The price and inventory of SZESD9C5.0ST5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD9C5.0ST5G is usually 5 days.
3.What payment methods are accepted for SZESD9C5.0ST5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD9C5.0ST5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD9C5.0ST5G?
SZESD9C5.0ST5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD9C5.0ST5G 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 SZESD9C5.0ST5G?
For technical support, including SZESD9C5.0ST5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD9C5.0ST5G requirements.
6.How does Aetrix verify that SZESD9C5.0ST5G is sourced from the original manufacturer or authorized distributors?
All SZESD9C5.0ST5G 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 SZESD9C5.0ST5G meets industry standards.
7.What is the process for return or replacement of SZESD9C5.0ST5G?
All SZESD9C5.0ST5G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD9C5.0ST5G, 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 SZESD9C5.0ST5G part is unused and in its original packaging.
Return procedure for SZESD9C5.0ST5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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