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onsemi NZQA5V6AXV5T1G
- Part No.:
- NZQA5V6AXV5T1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOT-553
- Datasheet:
-
NZQA5V6AXV5T1G.pdf
- Description:
- TVS DIODE 3VWM 13VC SOT553
- Quantity:
- Payment:
- Shipping:
Inventory:9,304
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Product details
Overview
NZQA5V6AXV5T1G from onsemi is a unidirectional ESD protection diode array in SOT-553 package, designed for transient overvoltage suppression on four independent signal lines. It features 3 V working peak reverse voltage, 5.6 V nominal breakdown voltage at 1 mA, clamping voltage of 13 V at 1.6 A peak pulse current, and IEC 61000-4-2 Level 4 ESD compliance (±8 kV contact). It is used in USB 1.1/2.0 low/full-speed ports and space-constrained portable electronics.
For engineers reviewing the NZQA5V6AXV5T1G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under IEC 61000-4-2 surge, leakage current at 3 V standoff, capacitance at 0 V bias (7.0 pF), and compatibility with four-line unidirectional protection layouts in high-density PCB designs.
Technical Context
This device integrates four independent unidirectional ESD protection diodes in a single SOT-553 package, each configured as anode-to-rail cathode-to-line. It operates with a 3 V stand-off voltage to avoid interference with 3.3 V logic signaling while maintaining fast response to ESD transients.
The clamping behavior is characterized per IEC 61000-4-2 waveform (8 kV contact discharge), delivering 13 V max clamping at 1.6 A peak pulse current. Its 7.0 pF typical capacitance at 0 V bias ensures minimal signal integrity impact on USB and serial interfaces up to full-speed (12 Mbps) data rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage | 3.0 V - Ensures no conduction during normal 3.3 V logic operation |
| Breakdown Voltage | 5.6 V (nominal) @ 1 mA - Defines turn-on threshold for transient suppression |
| Clamping Voltage | 13 V max @ 1.6 A IPP - Limits line voltage during ±8 kV IEC 61000-4-2 ESD event |
| Leakage Current | 1.0 µA max @ 3.0 V - Minimizes standby power loss and signal loading |
| Capacitance | 7.0 pF typ @ 0 V - Preserves signal integrity on USB 1.1/2.0 full-speed lines |
| ESD Rating | IEC 61000-4-2 Level 4 (±8 kV contact) - Meets industrial and consumer equipment immunity requirements |
| Peak Pulse Power | 20 W (non-repetitive) - Handles single-event surges without degradation |
Pinout & Package
SOT-553 (Case 463B), 1.60 mm × 1.20 mm × 0.55 mm, 5-pin surface-mount package with exposed pad not present. Pin 1 is ANODE 1, Pin 2 is NC, Pin 3 is ANODE 2, Pin 4 is CATHODE 2, Pin 5 is CATHODE 1 - matching Style 3 marking diagram in onsemi mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input node for first protected line; connects to I/O trace before ESD event |
| 2 | No Connect | Internally unconnected; must remain floating on PCB layout |
| 3 | Anode 2 | Input node for second protected line; electrically isolated from Pin 1 |
| 4 | Cathode 2 | Return path to ground/VCC rail for second protected line |
| 5 | Cathode 1 | Return path to ground/VCC rail for first protected line |
Key Features
| Feature | Design Value |
|---|---|
| Four-line unidirectional protection | Enables discrete protection of four independent I/Os (e.g., USB D+, D−, VBUS detect, ID) without shared cathode coupling |
| Low clamping voltage (13 V) | Reduces stress on downstream ICs during ±8 kV ESD events, improving system-level pass rate |
| SOT-553 footprint | Occupies only 1.92 mm² board area - 40% smaller than SOIC-8 alternatives |
| USB 1.1/2.0 compliance | Validated for low-speed (1.5 Mbps) and full-speed (12 Mbps) signaling with <7 pF capacitance |
| Pb-free construction | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 3 moisture sensitivity |
Applications
| USB Port Protection | Serial Interface Protection |
|---|---|
Use Scenario: Protecting USB 2.0 upstream/downstream ports in notebooks and docking stations against ESD events during cable insertion/removal. IC Role / Device Role / Timing Role: Unidirectional clamping diode array placed between connector and USB transceiver, shunting ESD current to ground before it reaches PHY. Use Value: Maintains 7.0 pF capacitance to preserve eye diagram integrity at 480 Mbps, while clamping to ≤13 V to prevent transceiver latch-up. | Use Scenario: Safeguarding RS-232/RS-485 transceivers in industrial HMI panels exposed to operator touch and cable coupling noise. IC Role / Device Role / Timing Role: Four-channel line protector isolating TX/RX/CTS/RTS lines from ±8 kV contact discharge per IEC 61000-4-2. Use Value: Prevents false triggering and latch-up in UART peripherals by limiting transient voltage to 13 V with sub-µA leakage at 3 V rail. |
| Notebook I/O Protection | Medical Equipment Data Ports |
Use Scenario: Securing SD card, audio jack, and debug interface pins on ultra-thin laptop motherboards where board space is constrained. IC Role / Device Role / Timing Role: Single-package solution replacing four discrete 0402 TVS diodes, reducing BOM count and placement cost. Use Value: Achieves 4-line protection in 1.92 mm² vs. ≥6.0 mm² for discrete equivalents, enabling thinner chassis designs. | Use Scenario: Shielding patient-monitoring device USB and serial ports from ESD during clinical handling and sterilization procedures. IC Role / Device Role / Timing Role: Transient suppressor meeting IEC 60601-1-2 ESD immunity requirements for Class II medical devices. Use Value: Delivers certified ±8 kV contact ESD protection without compromising signal fidelity on low-voltage analog-digital hybrid data paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E05U06DQAR | Lower capacitance (0.5 pF typ), higher stand-off (5.5 V), same SOT-563 package but 6-pin | Better suited for high-speed USB 3.0/PCIe; less ideal for 3.3 V logic due to higher VRWM | Select when protecting >1 Gbps differential signals; avoid if 3.0 V stand-off is required for 3.3 V rail margin |
| ESD5Z3.3T5G | Single-channel, 3.3 V stand-off, SOD-523 package, 12 V clamping @ 1 A | Requires four separate placements; lacks integrated 4-line coordination and common layout optimization | Choose only when board space allows discrete placement or when mixed voltage rails require individual biasing |
Compared with TPD4E05U06DQAR and ESD5Z3.3T5G, the NZQA5V6AXV5T1G provides optimized 3.0 V stand-off for 3.3 V systems, integrated 4-line routing in one footprint, and validated USB 1.1/2.0 compatibility - making it preferred for cost-sensitive, space-constrained embedded USB endpoints.
Availability
NZQA5V6AXV5T1G is available at Aetrix Electronics and suitable for USB port protection, serial interface hardening, and notebook I/O safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for NZQA5V6AXV5T1G 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 focused on energy-efficient technologies for automotive, industrial, cloud, and intelligent edge applications.
The NZQA5V6AXV5T1G belongs to onsemi's ESD protection diode family, engineered specifically for compact, multi-line transient suppression in high-volume consumer and computing interfaces.
FAQ
What is the maximum clamping voltage of the NZQA5V6AXV5T1G under IEC 61000-4-2 testing?
The NZQA5V6AXV5T1G exhibits a maximum clamping voltage of 13 V when subjected to an IEC 61000-4-2 ±8 kV contact discharge event at 1.6 A peak pulse current. This value is measured across the diode terminals during the transient pulse and is specified in the Electrical Characteristics table of the official onsemi datasheet (Rev. 9, September 2025). The clamping performance ensures downstream ICs remain within safe operating voltage limits.
Does the NZQA5V6AXV5T1G support bidirectional signal lines like USB D+ and D−?
The NZQA5V6AXV5T1G is configured as a unidirectional ESD protection array, with each channel consisting of an anode-to-rail and cathode-to-line structure. It is intended for use with single-ended or ground-referenced signals. For true bidirectional lines such as USB D+/D−, external design considerations - including proper rail referencing and complementary placement - are required; the device itself does not provide symmetrical clamping in both directions.
What is the thermal resistance (RJA) of the NZQA5V6AXV5T1G in standard FR-4 mounting?
The NZQA5V6AXV5T1G has a junction-to-ambient thermal resistance (RJA) of 327 °C/W when mounted on a standard FR-4 PCB with minimum copper pad area, as specified in the Maximum Ratings table. This value reflects worst-case convection-only cooling and supports derating calculations for steady-state power dissipation - particularly relevant when multiple channels conduct simultaneously under sustained surge conditions.
Is the NZQA5V6AXV5T1G compliant with USB 2.0 full-speed signaling requirements?
Yes, the NZQA5V6AXV5T1G complies with USB 1.1 low-speed and full-speed specifications, as explicitly stated in the Features section of the onsemi datasheet. Its 7.0 pF typical capacitance at 0 V bias and low leakage (<1.0 µA at 3.0 V) ensure minimal signal distortion and timing skew on 12 Mbps full-speed USB data lines, meeting the electrical interface requirements defined in the USB specification.
What does the "T1G" suffix indicate in the NZQA5V6AXV5T1G part number?
The "T1G" suffix in NZQA5V6AXV5T1G denotes tape-and-reel packaging (T1) and Pb-free construction (G), per onsemi's ordering nomenclature. Specifically, T1 indicates 4000 units per reel, and G confirms RoHS-compliant, lead-free termination finish. This matches the ordering information in Table 1 of the datasheet and distinguishes it from the non-Pb-free NZQA5V6AXV5T1 variant.
NZQA5V6AXV5T1G 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):
- 3V
- Voltage - Breakdown (Min):
- 5.3V
- 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:
- 13pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-553
NZQA5V6AXV5T1G FAQ
1.How can I place an order for NZQA5V6AXV5T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZQA5V6AXV5T1G 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 NZQA5V6AXV5T1G reliable?
The price and inventory of NZQA5V6AXV5T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZQA5V6AXV5T1G is usually 5 days.
3.What payment methods are accepted for NZQA5V6AXV5T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZQA5V6AXV5T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZQA5V6AXV5T1G?
NZQA5V6AXV5T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZQA5V6AXV5T1G 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 NZQA5V6AXV5T1G?
For technical support, including NZQA5V6AXV5T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZQA5V6AXV5T1G requirements.
6.How does Aetrix verify that NZQA5V6AXV5T1G is sourced from the original manufacturer or authorized distributors?
All NZQA5V6AXV5T1G 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 NZQA5V6AXV5T1G meets industry standards.
7.What is the process for return or replacement of NZQA5V6AXV5T1G?
All NZQA5V6AXV5T1G units undergo pre-shipment inspection (PSI). If there is an issue with NZQA5V6AXV5T1G, 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 NZQA5V6AXV5T1G part is unused and in its original packaging.
Return procedure for NZQA5V6AXV5T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZQA5V6AXV5T1G Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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