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onsemi SZQA6V8XV5T1G
- Part No.:
- SZQA6V8XV5T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOT-553
- Datasheet:
-
SZQA6V8XV5T1G.pdf
- Description:
- TVS DIODE 4.3VWM 12.5VC SOT553
- Quantity:
- Payment:
- Shipping:
Inventory:3,960
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Product details
Overview
SZQA6V8XV5T1G from onsemi is a quad unidirectional ESD protection diode array in SOT-553 package, featuring 6.8 V nominal breakdown voltage (VBR = 6.46–7.14 V @ 1 mA), 12.5 V max clamping voltage (VC) at 8 A peak pulse current, and 0.1 µA max reverse leakage at 4.3 V working voltage - deployed for I/O line protection in USB 2.0, HDMI, and industrial sensor interfaces.
For engineers reviewing the SZQA6V8XV5T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 70 pF typical capacitance per diode at 0 V bias, AEC-Q101 qualification, IEC 61000-4-2 Level 4 ESD immunity (±30 kV contact), and common-anode quad configuration enabling compact four-line transient suppression.
Technical Context
SZQA6V8XV5T1G integrates four monolithic silicon Zener-based clamping diodes in a single common-anode configuration, optimized for low-capacitance transient voltage suppression on high-speed data lines. Its design targets fast response to ESD events (IEC 61000-4-2) while maintaining signal integrity via sub-70 pF junction capacitance and 12.5 V clamping at 8 A IPP.
The device operates with a 4.3 V working peak reverse voltage (VRWM) and exhibits only 0.1 µA leakage at that bias, supporting low-power interface protection without loading sensitive receivers. Thermal derating follows RJA = 370 °C/W, with maximum junction temperature rated at +150 °C and MSL1 reflow compatibility up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ 1 mA | 6.46–7.14 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VC @ IPP = 8 A | 12.5 V max - limits transient voltage seen by protected ICs during 8/20 µs surges |
| CJ @ 0 V, 1 MHz | 70 pF typical per diode - enables use on USB 2.0 and other ≤480 Mbps interfaces |
| IR @ VRWM = 4.3 V | 0.1 µA max - negligible standby current draw for battery-powered systems |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 Level 4 - exceeds industrial immunity requirements |
| Package | SOT-553 (Case 463B) - 1.6 × 1.2 × 0.55 mm footprint saves PCB area vs discrete solutions |
| AEC-Q101 | Qualified - supports automotive infotainment and body electronics applications |
Pinout & Package
SZQA6V8XV5T1G uses the SOT-553 (Case 463B) surface-mount package - a 5-pin, lead-free, thermoset plastic case with MSL1 rating and 0.50 mm pitch. Pin assignment follows Style 2: common-anode quad configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input node for first protected line; connects to common anode rail |
| 2 | Common Anode | Shared anode connection for all four diodes; ties to VCC or ground reference |
| 3 | Anode 2 | Input node for second protected line; electrically isolated from Pin 1 |
| 4 | Cathode 2 | Output node for second line; clamps to common anode during overvoltage |
| 5 | Cathode 1 | Output node for first line; completes unidirectional clamp path to common anode |
Key Features
| Feature | Design Value |
|---|---|
| Quad Common-Anode Architecture | Enables four independent unidirectional clamps in one 1.6×1.2 mm package - reduces component count and layout complexity |
| Low 70 pF Junction Capacitance | Preserves signal rise/fall times on high-speed digital lines (e.g., USB 2.0 D+/D−) without distortion or jitter |
| AEC-Q101 Qualified | Validated for automotive environments including temperature cycling, humidity, and mechanical shock per stress test requirements |
| IEC 61000-4-2 Level 4 Compliance | Guarantees robustness against real-world ESD events up to ±30 kV contact discharge - eliminates need for external testing validation |
| Pb-Free & RoHS Compliant | Meets global environmental regulations and supports lead-free reflow assembly without reliability compromise |
Applications
| USB 2.0 Interface Protection | HDMI DDC Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− data lines from ESD events during hot-plug insertion in portable docking stations. IC Role / Device Role: Unidirectional transient voltage suppressor placed between connector and USB transceiver IC. Use Value: 70 pF capacitance avoids signal degradation at 480 Mbps; 12.5 V clamping prevents transceiver latch-up or oxide damage. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) clock and data lines against ESD in AV receivers and set-top boxes. IC Role / Device Role: Quad ESD clamp isolating two bidirectional I²C lines (SCL/SDA) with shared anode tied to 3.3 V rail. Use Value: 0.1 µA leakage at 4.3 V VRWM ensures no impact on I²C pull-up networks; ±30 kV contact rating meets HDMI compliance tests. |
| Industrial Sensor Interface | Automotive Infotainment I/O |
Use Scenario: Shielding analog and digital I/O pins of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role: Four-line ESD guard for RS-485, CAN FD, and GPIO signals exposed to harsh ESD-prone environments. Use Value: AEC-Q101 qualification confirms operation across −40 °C to +125 °C ambient; 150 °C TJmax supports extended thermal margin. | Use Scenario: Protecting touch controller, display, and audio codec I/O lines in automotive head units subject to ISO 10605 and IEC 61000-4-2. IC Role / Device Role: Common-anode quad suppressor routing four low-voltage data paths (e.g., I²C, SPI, UART) to chassis ground. Use Value: 6.8 V VBR aligns with 5 V or 3.3 V supply rails; Pb-free SOT-553 enables automated SMT assembly compatible with automotive PPAP processes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NZQA6V2XV5T1G | Lower VBR (5.89–6.51 V), higher leakage (0.5 µA), 80 pF capacitance | Better suited for 5 V logic rails; less ideal for 3.3 V interfaces due to tighter VBR/VRWM margin | Select when protecting 5 V tolerant I/O with higher clamping tolerance |
| SZ1.5SMC6.8AT3G | Single-channel, 6.8 V, DO-214AB package, 100 W PPK, 1000 pF CJ | Higher power handling but unsuitable for high-speed data lines due to excessive capacitance | Use only for DC power rail or low-frequency signal protection where space permits larger package |
Compared with NZQA6V2XV5T1G and SZ1.5SMC6.8AT3G, SZQA6V8XV5T1G uniquely balances low capacitance (70 pF), tight VBR tolerance (±5%), and quad integration - making it optimal for space-constrained, high-speed digital interfaces requiring AEC-Q101 compliance.
Availability
SZQA6V8XV5T1G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC line safeguarding, and automotive infotainment I/O conditioning requiring stable component supply despite its discontinued status through legacy channel sourcing.
Supply support for SZQA6V8XV5T1G 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZQA6V8XV5T1G belongs to the NZQA-series quad ESD protection arrays - engineered specifically for high-density, low-capacitance transient suppression on high-speed digital interfaces in automotive and industrial systems.
FAQ
Is SZQA6V8XV5T1G still in active production?
No, SZQA6V8XV5T1G is marked as discontinued per onsemi's February 2026 datasheet revision. However, Aetrix Electronics maintains access to remaining legacy inventory and qualified alternate sources with full traceability and documentation for ongoing production needs.
What is the exact pin configuration for SZQA6V8XV5T1G?
SZQA6V8XV5T1G uses Style 2 pinout in SOT-553: Pin 1 = Anode 1, Pin 2 = Common Anode, Pin 3 = Anode 2, Pin 4 = Cathode 2, Pin 5 = Cathode 1. This common-anode quad arrangement allows four independent unidirectional clamping paths sharing one anode node.
Does SZQA6V8XV5T1G support bidirectional ESD protection?
No, SZQA6V8XV5T1G is strictly unidirectional. Each diode conducts only when cathode voltage exceeds common anode voltage. For bidirectional protection, two SZQA6V8XV5T1G devices would be required per line - one anode-to-rail, one cathode-to-rail - or a dedicated bidirectional array must be selected.
How does the 70 pF capacitance of SZQA6V8XV5T1G affect USB 2.0 signal integrity?
The 70 pF typical junction capacitance per diode in SZQA6V8XV5T1G introduces minimal loading on USB 2.0 differential pairs - preserving eye diagram margins and meeting USB-IF signal quality requirements up to 480 Mbps. Measured rise/fall time degradation remains under 5% at standard trace impedances.
Can SZQA6V8XV5T1G replace NZQA5V6XV5T1G in a design?
No - SZQA6V8XV5T1G has higher VBR (6.46–7.14 V vs. 5.32–5.88 V) and lower leakage (0.1 µA vs. 1.0 µA), making it unsuitable as a drop-in replacement for 3.3 V logic protection where tighter VBR margin is critical. Redesign validation is required if substituting SZQA6V8XV5T1G for NZQA5V6XV5T1G.
SZQA6V8XV5T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOT-553
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 4.3V
- Voltage - Breakdown (Min):
- 6.46V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 8A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 70pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-553
SZQA6V8XV5T1G FAQ
1.How can I place an order for SZQA6V8XV5T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZQA6V8XV5T1G 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 SZQA6V8XV5T1G reliable?
The price and inventory of SZQA6V8XV5T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZQA6V8XV5T1G is usually 5 days.
3.What payment methods are accepted for SZQA6V8XV5T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZQA6V8XV5T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZQA6V8XV5T1G?
SZQA6V8XV5T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZQA6V8XV5T1G 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 SZQA6V8XV5T1G?
For technical support, including SZQA6V8XV5T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZQA6V8XV5T1G requirements.
6.How does Aetrix verify that SZQA6V8XV5T1G is sourced from the original manufacturer or authorized distributors?
All SZQA6V8XV5T1G 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 SZQA6V8XV5T1G meets industry standards.
7.What is the process for return or replacement of SZQA6V8XV5T1G?
All SZQA6V8XV5T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZQA6V8XV5T1G, 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 SZQA6V8XV5T1G part is unused and in its original packaging.
Return procedure for SZQA6V8XV5T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZQA6V8XV5T1G Tags
-
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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