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onsemi NZQA6V8AXV5T3
- Part No.:
- NZQA6V8AXV5T3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOT-553
- Datasheet:
-
NZQA6V8AXV5T3.pdf
- Description:
- TVS DIODE 4.3VWM 13VC SOT553
- Quantity:
- Payment:
- Shipping:
Inventory:3,053
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Product details
Overview
NZQA6V8AXV5T3 from onsemi is a quad unidirectional ESD protection diode in SOT-553 package, featuring 4.3 V working peak reverse voltage, 7.14 V max breakdown voltage at 1 mA, 13 A maximum reverse peak pulse current, 12 V clamping voltage at 13 A, and 6.7 pF typical capacitance at 0 V bias. It delivers IEC 61000-4-2 Level 4 ESD protection for high-speed USB 1.1 low/full-speed data lines.
For engineers reviewing the NZQA6V8AXV5T3 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 13 A surge, sub-7 pF line capacitance for signal integrity, 4-line integrated protection in 1.6 mm × 1.2 mm footprint, and compliance with USB 1.1 timing and impedance requirements.
Technical Context
This device implements four independent unidirectional Zener-based ESD clamps sharing a common anode terminal, enabling simultaneous transient suppression across four signal lines. Its architecture supports fast response to ±8 kV contact ESD events per IEC 61000-4-2 while maintaining low leakage (<1 µA at 4.3 V) and stable clamping performance up to 150°C junction temperature.
The SOT-553 package integrates all four cathodes and one common anode into five terminals, with thermal resistance of 327°C/W (junction-to-ambient, FR-4 board). Power derating begins above 25°C at 3.05 mW/°C, supporting sustained operation in compact industrial and portable electronics enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 4.3 V - Maximum continuous DC or RMS signal voltage the diode blocks without conduction |
| Clamping Voltage @ 13 A | 12 V - Peak voltage seen by protected IC during 8/20 µs surge, limiting stress on downstream logic |
| Breakdown Voltage @ 1 mA | 6.47–7.14 V - Confirmed Zener onset range ensuring reliable turn-on before system damage threshold |
| Capacitance @ 0 V | 6.7 pF - Low line loading for USB 1.1 full-speed (12 Mbps) signals, preserving rise/fall time integrity |
| ESD Rating | IEC 61000-4-2 Level 4 (±8 kV contact) - Validated immunity for end-equipment certification |
| Leakage Current @ VRWM | 1.0 µA - Minimal standby power draw and signal distortion in always-on interfaces |
| Package | SOT-553 (Case 463B) - 1.6 mm × 1.2 mm × 0.6 mm footprint, compatible with standard 0.5 mm pitch reflow profiles |
Pinout & Package
SOT-553 is a 5-lead surface-mount plastic package with gull-wing leads, measuring 1.60 mm × 1.20 mm × 0.60 mm (L × W × H), optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 | ESD clamp return path for first protected signal line (e.g., USB D+) |
| 2 | Common Anode | Shared anode connection tied to VCC or ground depending on system biasing scheme |
| 3 | Cathode 2 | ESD clamp return path for second protected signal line (e.g., USB D−) |
| 4 | Cathode 3 | ESD clamp return path for third signal line (e.g., VBUS sense or ID line) |
| 5 | Cathode 4 | ESD clamp return path for fourth signal line (e.g., auxiliary control or status line) |
Key Features
| Feature | Design Value |
|---|---|
| Quad unidirectional configuration | Four independent clamps share one anode, reducing component count vs. discrete diodes and eliminating cross-talk risk |
| Low 12 V clamping at 13 A | Ensures protected ICs remain below absolute maximum ratings during worst-case IEC 61000-4-2 surges |
| 6.7 pF capacitance @ 0 V | Preserves USB 1.1 signal edge rates and eye diagram margin without requiring layout compensation |
| Pb-free SOT-553 package | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) |
| −55°C to +150°C operation | Supports deployment in automotive cabin modules, industrial HMIs, and medical handheld devices |
Applications
| USB 1.1 Interface Protection | Serial Port ESD Hardening |
|---|---|
|
Use Scenario: Protecting USB D+, D−, VBUS, and ID lines on embedded host controllers against electrostatic discharge during cable insertion or handling. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector entry point, clamping surges before they reach PHY or controller pins. Use Value: Maintains USB 1.1 full-speed timing compliance with <6.7 pF line capacitance and limits clamped voltage to 12 V during ±8 kV contact discharge. |
Use Scenario: Securing RS-232 or RS-485 transceiver I/O pins in industrial programmable logic controllers exposed to field maintenance personnel. IC Role / Device Role / Timing Role: Unidirectional shunt clamp referenced to local ground, diverting ESD energy away from transceiver ESD-sensitive inputs. Use Value: Prevents latch-up or gate oxide damage in transceivers while adding only 0.6 mm² PCB area versus four discrete SOD-323 devices. |
| Notebook Internal Bus Protection | Medical Sensor Interface Guarding |
|
Use Scenario: Shielding internal low-speed SMBus or I²C lines connecting EC, keyboard controller, and battery management ICs in ultra-thin notebooks. IC Role / Device Role / Timing Role: Low-capacitance bidirectional-capable clamp (anode grounded) suppressing both positive and negative transients on open-drain buses. Use Value: Enables use of 1.8 V or 3.3 V I²C pull-ups without compromising rise time, verified by 6.7 pF capacitance at 0 V bias. |
Use Scenario: Safeguarding analog front-end inputs of portable ECG or pulse oximeter sensors connected via flexible flat cables prone to triboelectric charging. IC Role / Device Role / Timing Role: Signal-line protector with <1 µA leakage at 4.3 V, preventing DC offset drift in high-impedance sensor amplifiers. Use Value: Guarantees baseline stability over −55°C to +150°C operating range and passes IEC 60601-1-2 ESD immunity testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DRYR | Single-channel, 0.5 pF capacitance, 3.6 V working voltage, SOT-553 package | Lower capacitance but requires four separate devices; better for >480 Mbps USB 2.0, not rated for USB 1.1 full-speed compliance | Select when minimizing signal distortion is critical and board space allows discrete placement |
| ESD5V3U4-2/TR | Quad unidirectional, 5.3 V working voltage, 15 V clamping at 12 A, SOT-553 | Higher clamping voltage increases risk to 3.3 V logic; lacks USB 1.1 specification compliance statement | Acceptable for non-USB general-purpose I/O protection where 15 V clamping is within system margin |
Compared with TPD4E001DRYR and ESD5V3U4-2/TR, NZQA6V8AXV5T3 uniquely balances USB 1.1 compliance, 12 V clamping headroom, and quad integration-enabling single-device protection of D+, D−, VBUS, and ID without sacrificing signal fidelity or requiring layout redesign.
Availability
NZQA6V8AXV5T3 is available at Aetrix Electronics and suitable for USB interface protection, serial port hardening, and medical sensor guarding requiring stable component supply and full traceability through production ramp and long-term maintenance cycles.
Supply support for NZQA6V8AXV5T3 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.
The NZQA5V6AXV5 Series is part of onsemi's ESD protection portfolio designed specifically for high-density, low-capacitance transient suppression in USB, serial, and sensor interfaces where board space and signal integrity are constrained.
FAQ
What is the maximum clamping voltage of NZQA6V8AXV5T3 under IEC 61000-4-2 surge conditions?
The NZQA6V8AXV5T3 exhibits a maximum clamping voltage of 12 V when subjected to a 13 A peak pulse current per the IEC 61000-4-2 8/20 µs waveform. This value is measured across the diode terminals during standardized ESD testing and ensures protected circuitry remains within safe operating limits. The clamping performance is validated in Figures 1 and 2 of the official datasheet, and applies directly to the NZQA6V8AXV5T3 device.
Does NZQA6V8AXV5T3 meet USB 1.1 low-speed and full-speed specifications?
Yes, NZQA6V8AXV5T3 is explicitly stated in the datasheet to comply with USB 1.1 low-speed and full-speed specifications. This compliance is enabled by its 6.7 pF typical capacitance at 0 V bias and 4.3 V working peak reverse voltage, which preserve signal integrity and timing margins required for 1.5 Mbps and 12 Mbps data rates. The NZQA6V8AXV5T3 achieves this without external tuning components.
What is the pin configuration of NZQA6V8AXV5T3 and how is the common anode used in circuit design?
NZQA6V8AXV5T3 uses a 5-pin SOT-553 layout: Pin 1 = Cathode 1, Pin 2 = Common Anode, Pin 3 = Cathode 2, Pin 4 = Cathode 3, Pin 5 = Cathode 4. The common anode is typically connected to VCC for positive-going transient suppression or to ground for negative-going suppression, depending on system reference. This configuration allows NZQA6V8AXV5T3 to protect four independent lines with minimal routing complexity.
What is the thermal resistance and power derating behavior of NZQA6V8AXV5T3?
NZQA6V8AXV5T3 has a junction-to-ambient thermal resistance (RJA) of 327°C/W when mounted on an FR-4 board with minimum pad. Its steady-state power dissipation per diode is 380 mW at 25°C, derating linearly at 3.05 mW/°C above that temperature. This derating curve is shown in Figure 7 of the datasheet and must be applied when calculating safe operating area for repeated surge events in the NZQA6V8AXV5T3.
Is NZQA6V8AXV5T3 RoHS-compliant and what is its moisture sensitivity level?
Yes, NZQA6V8AXV5T3 is Pb-free and RoHS-compliant per EU Directive 2011/65/EU. Its SOT-553 package carries a moisture sensitivity level (MSL) of 1, meaning it can be stored indefinitely at ambient conditions without baking prior to reflow soldering. This MSL rating is confirmed in onsemi's Soldering and Mounting Techniques Reference Manual, SOLDERRM/D, and applies to every unit of NZQA6V8AXV5T3 shipped in tape-and-reel format.
NZQA6V8AXV5T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOT-553
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 4.3V
- Voltage - Breakdown (Min):
- 6.47V
- Voltage - Clamping (Max) @ Ipp:
- 13V
- Current - Peak Pulse (10/1000µs):
- 1.6A (8/20µs)
- Power - Peak Pulse:
- 20W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 12pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-553
NZQA6V8AXV5T3 FAQ
1.How can I place an order for NZQA6V8AXV5T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZQA6V8AXV5T3 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 NZQA6V8AXV5T3 reliable?
The price and inventory of NZQA6V8AXV5T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZQA6V8AXV5T3 is usually 5 days.
3.What payment methods are accepted for NZQA6V8AXV5T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZQA6V8AXV5T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZQA6V8AXV5T3?
NZQA6V8AXV5T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZQA6V8AXV5T3 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 NZQA6V8AXV5T3?
For technical support, including NZQA6V8AXV5T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZQA6V8AXV5T3 requirements.
6.How does Aetrix verify that NZQA6V8AXV5T3 is sourced from the original manufacturer or authorized distributors?
All NZQA6V8AXV5T3 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 NZQA6V8AXV5T3 meets industry standards.
7.What is the process for return or replacement of NZQA6V8AXV5T3?
All NZQA6V8AXV5T3 units undergo pre-shipment inspection (PSI). If there is an issue with NZQA6V8AXV5T3, 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 NZQA6V8AXV5T3 part is unused and in its original packaging.
Return procedure for NZQA6V8AXV5T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZQA6V8AXV5T3 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
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
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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