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onsemi SZNZL6V8AXV3T1G
- Part No.:
- SZNZL6V8AXV3T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-89, SOT-490
- Datasheet:
-
SZNZL6V8AXV3T1G.pdf
- Description:
- TVS DIODE 4.5VWM 11.9VC SC89-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,414
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Product details
Overview
SZNZL6V8AXV3T1G from onsemi is a dual common-anode ESD protection diode in SC-89 package, rated for 6.8 V breakdown voltage (VBR = 6.46–7.14 V), 11.9 V clamping voltage (VC) at 1 A surge, and 1.0 µA max reverse leakage at 4.5 V VRWM. It delivers Class N ESD immunity (>16 kV HBM) and meets IEC61000-4-2 Level 4 (±8 kV contact), protecting two I/O lines in space-constrained interfaces like USB or keyboard controllers.
For engineers reviewing the SZNZL6V8AXV3T1G datasheet, pinout, applications, or equivalent options, key selection criteria include unidirectional dual-line clamping capability, SC-89 footprint compatibility, automotive-grade AEC-Q101 qualification, and verified 10.1–11.9 V VC performance under 1–73 A peak surge current.
Technical Context
This device implements a monolithic dual-junction silicon structure with shared anode (Pin 3) and separate cathodes (Pins 1 & 2), enabling independent protection of two signal lines without cross-coupling. Its design targets transient suppression in low-capacitance (<30 pF at 0 V bias) high-speed digital interfaces.
The SZNZL6V8AXV3T1G operates within −55 °C to +150 °C junction temperature range, features 525 °C/W thermal resistance (RJA), and sustains 240 mW steady-state power dissipation on FR-5 board - derating linearly above 25 °C at 1.9 mW/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 6.46–7.14 V @ IT = 5 mA - defines minimum trigger threshold for ESD clamping |
| Clamping Voltage (VC) | 11.9 V @ IPP = 1.0 A - maximum voltage seen by protected line during 8/20 µs surge |
| Working Peak Reverse Voltage (VRWM) | 4.5 V - maximum continuous DC voltage before significant leakage onset |
| Reverse Leakage (IR) | <1.0 µA @ VRWM - ensures minimal signal loading on high-impedance I/O lines |
| ESD Rating (HBM) | >16 kV - exceeds Class N requirement for robust handling in manufacturing and field use |
| IEC61000-4-2 Level | Level 4 (±8 kV contact, ±15 kV air) - certified for industrial and automotive EMC compliance |
| Package | SC-89 (Case 463C, 1.60 × 0.85 × 0.70 mm) - ultra-compact 3-pin surface-mount footprint |
Pinout & Package
SC-89 package (Case 463C, Style 4) is a void-free, transfer-molded thermosetting plastic housing with 100% matte tin lead finish, MSL 1 rated for 260 °C reflow, and UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Line 1) | Connects to first protected signal line; conducts during positive transients on that line |
| Pin 2 | Cathode (Line 2) | Connects to second protected signal line; independent conduction path from Pin 1 |
| Pin 3 | Common Anode | Shared return path to ground or supply rail; enables dual-line protection in single package |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional configuration | Two independent cathodes share one anode - supports discrete protection of two signals without interaction |
| Low dynamic capacitance | <30 pF at 0 V bias - preserves signal integrity in USB 2.0, HDMI, or I²C bus applications |
| AEC-Q101 qualified | Validated for automotive electronics - includes stress testing across temperature, humidity, and lifetime cycles |
| Pb-free, halogen-free, RoHS compliant | Meets global environmental regulations and enables drop-in replacement in legacy designs |
| SC-89 footprint | 1.60 × 0.85 mm body - reduces PCB area by >50% vs. SOIC-8 or SOT-23 dual-diode solutions |
Applications
| USB 2.0 Data Line Protection | Automotive Infotainment I/O |
|---|---|
|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between connector and PHY IC. Use Value: Limits clamped voltage to ≤11.9 V during 1 A surge, preventing latch-up or damage to 3.3 V tolerant PHY inputs. |
Use Scenario: Safeguarding CAN/LIN bus interface pins and touch-screen controller lines in dashboard modules. IC Role / Device Role / Timing Role: Dual-line ESD clamp integrated into front-end signal conditioning stage. Use Value: Delivers AEC-Q101 compliance and ±8 kV IEC61000-4-2 contact immunity while occupying minimal PCB real estate. |
| Industrial Keypad Interface | Medical Device Sensor Inputs |
|
Use Scenario: Shielding membrane keypad scan lines from operator-induced ESD in factory HMIs. IC Role / Device Role / Timing Role: Common-anode dual diode bridging each row/column pair to ground. Use Value: Enables compact layout with <1.0 µA leakage at 4.5 V - avoids false key detection in high-impedance scan circuits. |
Use Scenario: Protecting analog sensor inputs (e.g., temperature, pressure) in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-capacitance ESD shunt placed directly at connector entry point. Use Value: Maintains signal fidelity with <30 pF capacitance and prevents transient-induced ADC offset errors or saturation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NZL6V8AXV3T1G | No SZ prefix; standard commercial grade (non-automotive); same electrical specs and SC-89 package | Lacks AEC-Q101 qualification and PPAP documentation support | Select when automotive qualification is not required and cost sensitivity is higher |
| ESD5Z6.8T1G | Same VBR (6.8 V), but bidirectional configuration; 15 pF capacitance vs. 30 pF (unidirectional mode) | Better suited for AC-coupled or symmetric signal lines (e.g., RS-485), not common-anode dual-line | Choose only if bidirectional clamping is needed and dual independent cathodes are unnecessary |
Compared with NZL6V8AXV3T1G and ESD5Z6.8T1G, the SZNZL6V8AXV3T1G uniquely combines AEC-Q101 compliance, dual independent cathode routing, and verified 11.9 V clamping - making it the sole option for automotive dual-line I/O where traceability and process control are mandatory.
Availability
SZNZL6V8AXV3T1G is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI keypads, and medical sensor interfaces requiring stable component supply amid ongoing discontinuation notices for related variants.
Supply support for SZNZL6V8AXV3T1G 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NZLxxxAXV3T1 series was designed specifically for space-constrained, high-reliability ESD protection in dual-signal applications - emphasizing low leakage, tight VBR tolerance, and AEC-Q101 validation for mission-critical electronics.
FAQ
What is the primary function of the SZNZL6V8AXV3T1G?
The SZNZL6V8AXV3T1G functions as a dual unidirectional ESD protection diode with common anode configuration. It safeguards two independent signal lines - such as USB D+ and D− - by clamping transient voltages to 11.9 V during 1 A surges. Its design ensures low leakage (<1.0 µA) and tight breakdown voltage (6.46–7.14 V), making the SZNZL6V8AXV3T1G ideal for high-impedance, noise-sensitive interfaces in automotive and industrial systems.
Is the SZNZL6V8AXV3T1G still in active production?
Yes, the SZNZL6V8AXV3T1G remains orderable and supported by onsemi despite discontinuation notices for other variants (e.g., SZNZL5V6AXV3T1G and NZL6V8AXV3T3G). Per onsemi's official ordering table (Page 6, Rev. 8, Sept. 2025), SZNZL6V8AXV3T1G is listed with active "3000 / Tape & Reel" packaging - confirming its current production status and availability through authorized channels including Aetrix Electronics.
How does the SZNZL6V8AXV3T1G differ from the NZL6V8AXV3T1G?
The SZNZL6V8AXV3T1G differs from NZL6V8AXV3T1G solely in qualification and traceability: the "SZ" prefix denotes AEC-Q101 qualification, PPAP capability, and enhanced process controls for automotive applications. Electrically and physically - including VBR, VC, IR, SC-89 package, and pinout - both parts are identical. Therefore, the SZNZL6V8AXV3T1G is the required choice for automotive designs needing certified reliability, while NZL6V8AXV3T1G serves commercial applications.
What is the maximum surge current the SZNZL6V8AXV3T1G can handle?
The SZNZL6V8AXV3T1G is rated for a peak pulse current (IPP) of 73 A under the standardized 8/20 µs waveform (per Figure 5 in the datasheet), delivering 73 W peak power (Ppk). At lower currents - such as 1.0 A - its clamping voltage is guaranteed ≤11.9 V. This performance is validated per IEC61000-4-2 Level 4 testing, ensuring the SZNZL6V8AXV3T1G reliably suppresses ESD events up to ±8 kV contact discharge without degradation.
Can the SZNZL6V8AXV3T1G be used in bidirectional signal protection?
No - the SZNZL6V8AXV3T1G is strictly unidirectional due to its common-anode architecture (Pins 1 & 2 = cathodes, Pin 3 = anode). It protects only positive transients on either line relative to the anode reference. For bidirectional protection (e.g., AC-coupled lines), a dedicated bidirectional device like ESD5Z6.8T1G is required. Using the SZNZL6V8AXV3T1G in bidirectional configurations risks failure during negative excursions, as it lacks reverse conduction capability.
SZNZL6V8AXV3T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-89, SOT-490
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 4.5V
- Voltage - Breakdown (Min):
- 6.46V
- Voltage - Clamping (Max) @ Ipp:
- 11.9V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- Power - Peak Pulse:
- 73W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-89-3
SZNZL6V8AXV3T1G FAQ
1.How can I place an order for SZNZL6V8AXV3T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZL6V8AXV3T1G 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 SZNZL6V8AXV3T1G reliable?
The price and inventory of SZNZL6V8AXV3T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZL6V8AXV3T1G is usually 5 days.
3.What payment methods are accepted for SZNZL6V8AXV3T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZL6V8AXV3T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZL6V8AXV3T1G?
SZNZL6V8AXV3T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZL6V8AXV3T1G 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 SZNZL6V8AXV3T1G?
For technical support, including SZNZL6V8AXV3T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZL6V8AXV3T1G requirements.
6.How does Aetrix verify that SZNZL6V8AXV3T1G is sourced from the original manufacturer or authorized distributors?
All SZNZL6V8AXV3T1G 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 SZNZL6V8AXV3T1G meets industry standards.
7.What is the process for return or replacement of SZNZL6V8AXV3T1G?
All SZNZL6V8AXV3T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZL6V8AXV3T1G, 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 SZNZL6V8AXV3T1G part is unused and in its original packaging.
Return procedure for SZNZL6V8AXV3T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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