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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

onsemi NSQA6V8AW5T2

Name: NSQA6V8AW5T2
Brand: onsemi
SKU: NSQA6V8AW5T2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NSQA6V8AW5T2

Manufacturer:: onsemi

Category:: TVS Diodes

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: NSQA6V8AW5T2.pdf

Description:: TVS DIODE 5VWM 13VC SC88A

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Product details

Overview

NSQA6V8AW5T2 from onsemi is a unidirectional ESD protection diode array designed for CAN/LIN bus line protection in automotive and industrial control systems. It features a 5 V stand-off voltage, 6.8 V typical breakdown voltage, clamping voltage of ≤13 V at 1.6 A peak pulse current, <1 µA leakage at 5 V, and 12 pF junction capacitance at 0 V bias - enabling robust transient suppression in space-constrained serial interface designs.

For engineers reviewing the NSQA6V8AW5T2 datasheet, pinout, applications, or equivalent options, key selection criteria include IEC 61000-4-2 Level 4 (±8 kV contact) ESD compliance, SC-88A package footprint, low clamping performance for sensitive CAN transceivers, and verified unidirectional four-line protection architecture.

Technical Context

The NSQA6V8AW5T2 integrates four independent unidirectional Zener-based ESD protection diodes in a single SC-88A (SOT-353) package, each configured with cathode-to-rail grounding for signal-line-to-ground clamping. Its design targets fast response to ESD transients while maintaining low capacitance to preserve signal integrity on high-speed serial buses.

It operates within −40°C to +125°C junction temperature range and supports surge immunity per IEC 61000-4-2 and MIL-STD-883C Class 3. The device's 327°C/W thermal resistance and 380 mW steady-state power rating (per diode) require careful PCB thermal management under sustained overvoltage conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Stand-off Voltage	5 V - Maximum continuous reverse voltage before conduction begins; ensures no interference with 5 V CAN/LIN logic levels.
Breakdown Voltage (IT = 1 mA)	6.4–7.1 V - Defined Zener turn-on threshold; guarantees reliable triggering during transients above system operating voltage.
Clamping Voltage @ 1.6 A	≤13 V - Peak voltage seen by protected IC during 8/20 µs surge; limits stress on downstream CAN transceiver inputs.
Leakage Current @ 5 V	<1 µA - Negligible DC loading on bus lines; avoids signal degradation or false wake-up in low-power modes.
Junction Capacitance @ 0 V	12–15 pF - Low parasitic capacitance preserves signal rise/fall times on CAN FD or LIN up to 200 kbps.
ESD Rating	IEC 61000-4-2 Level 4 (±8 kV contact) - Validated immunity to real-world human-body ESD events without latch-up or parametric shift.
Package	SC-88A (SOT-353), 5-pin - Compact 2.2 × 1.35 mm footprint enables placement adjacent to connectors with minimal trace length.

Pinout & Package

NSQA6V8AW5T2 is housed in an SC-88A (SOT-353) surface-mount package with gull-wing leads, optimized for automated assembly and thermal dissipation on FR4 PCBs. Pin 1 is marked with a dot or notch; the package outline conforms to case 419A-02.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode of Diode 1	Connects to protected signal line (e.g., CAN_H); clamps positive transients to V_CC rail when used with external pull-up.
2	Cathode of Diode 1 / Anode of Diode 2	Shared node tied to V_CC; provides bidirectional clamping path for differential signals when paired with companion diode.
3	GND	Common ground reference for all four diodes; must be low-inductance connection to system ground plane.
4	Anode of Diode 3	Second protected signal line (e.g., CAN_L); identical clamping behavior as Pin 1 for complementary line protection.
5	Cathode of Diode 3 / Anode of Diode 4	Shared V_CC node for Diode 3/4; enables compact dual-line protection without discrete V_CC routing.

Key Features

Feature	Design Value
Unidirectional 4-line protection	Four independent Zener diodes in one SC-88A package eliminate need for four discrete devices, reducing BOM count and layout area by >60%.
Low 12 pF capacitance @ 0 V	Minimizes signal distortion on CAN/LIN buses operating up to 500 kbps, avoiding timing skew or bit errors in automotive diagnostics.
≤13 V clamping @ 1.6 A	Ensures protected transceiver ICs see sub-15 V stress during 8/20 µs surges, staying well below absolute maximum ratings of common CAN PHYs.
IEC 61000-4-2 Level 4 certified	Validated to withstand ±8 kV contact discharge - meets OEM requirements for infotainment, body control, and gateway ECUs.

Applications

Automotive CAN Bus Node	LIN Bus Sensor Interface
Use Scenario: Protection of CAN_H/CAN_L lines in door module ECUs exposed to ESD during service or harness mating. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between connector and CAN transceiver, clamping surges before they reach PHY inputs. Use Value: Prevents latch-up or permanent damage to TJA1042/TJA1055 transceivers during ±8 kV contact ESD events per ISO 10605.	Use Scenario: ESD safeguard for LIN slave nodes (e.g., HVAC actuators, seat position sensors) connected via long cable harnesses. IC Role / Device Role / Timing Role: Signal-line-to-ground clamp that maintains LIN's 19.2 kbps data rate without adding jitter or propagation delay. Use Value: Enables reliable operation in harsh environments where repeated connector insertion generates >10,000 ESD events over product lifetime.
Industrial PLC Serial Port	Medical Device RS-485 Interface
Use Scenario: Transient protection for RS-485/RS-422 ports on programmable logic controllers subjected to field wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Front-end surge limiter that works in concert with TVS arrays and common-mode chokes to meet IEC 61000-4-4 Level 3 immunity. Use Value: Reduces failure rate of isolated RS-485 transceivers (e.g., ADM2483) in factory automation systems with 24 VDC field power.	Use Scenario: ESD hardening of patient-monitoring equipment communication ports (e.g., bedside telemetry units using proprietary LIN-like protocols). IC Role / Device Role / Timing Role: Low-leakage (<1 µA), low-capacitance protector ensuring signal fidelity for analog sensor data transmitted over shared LIN wires. Use Value: Supports FDA-required 2×MOPP isolation integrity by eliminating leakage paths that could compromise patient safety grounds.

Automotive CAN Bus Node

LIN Bus Sensor Interface

Use Scenario: Protection of CAN_H/CAN_L lines in door module ECUs exposed to ESD during service or harness mating.

IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between connector and CAN transceiver, clamping surges before they reach PHY inputs.

Use Value: Prevents latch-up or permanent damage to TJA1042/TJA1055 transceivers during ±8 kV contact ESD events per ISO 10605.

Use Scenario: ESD safeguard for LIN slave nodes (e.g., HVAC actuators, seat position sensors) connected via long cable harnesses.

IC Role / Device Role / Timing Role: Signal-line-to-ground clamp that maintains LIN's 19.2 kbps data rate without adding jitter or propagation delay.

Use Value: Enables reliable operation in harsh environments where repeated connector insertion generates >10,000 ESD events over product lifetime.

Industrial PLC Serial Port

Medical Device RS-485 Interface

Use Scenario: Transient protection for RS-485/RS-422 ports on programmable logic controllers subjected to field wiring faults and lightning-induced surges.

IC Role / Device Role / Timing Role: Front-end surge limiter that works in concert with TVS arrays and common-mode chokes to meet IEC 61000-4-4 Level 3 immunity.

Use Value: Reduces failure rate of isolated RS-485 transceivers (e.g., ADM2483) in factory automation systems with 24 VDC field power.

Use Scenario: ESD hardening of patient-monitoring equipment communication ports (e.g., bedside telemetry units using proprietary LIN-like protocols).

IC Role / Device Role / Timing Role: Low-leakage (<1 µA), low-capacitance protector ensuring signal fidelity for analog sensor data transmitted over shared LIN wires.

Use Value: Supports FDA-required 2×MOPP isolation integrity by eliminating leakage paths that could compromise patient safety grounds.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ESD5Z5.0T1G	Single-line SOD-523 package; 5.0 V stand-off; 13.5 V clamping @ 1 A; 65 pF capacitance.	Higher capacitance limits use to DC/low-speed interfaces only; not suitable for CAN FD or LIN beyond 20 kbps.	Select when protecting individual GPIOs or power rails where board space allows discrete placement per line.
TPD2E001DRYR	Two-line unidirectional array in SOT-553; 5.5 V stand-off; 12 V clamping @ 1 A; 11 pF capacitance; integrated 100 Ω series resistors.	Series resistors add ~10 ns propagation delay; unsuitable for time-critical CAN arbitration or LIN sync fields.	Prefer for USB 2.0 or I²C protection where series impedance improves noise rejection without violating timing budgets.

Compared with ESD5Z5.0T1G and TPD2E001DRYR, the NSQA6V8AW5T2 delivers superior multi-line integration (4 channels), lower capacitance than ESD5Z5.0T1G, and absence of series resistors-making it optimal for high-fidelity CAN/LIN bus protection where signal integrity and deterministic timing are critical.

Availability

NSQA6V8AW5T2 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and medical device communications requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability validation.

Supply support for NSQA6V8AW5T2 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications with emphasis on reliability and sustainability.

The NSQA6V8AW5T2 belongs to onsemi's ESD protection diode family engineered specifically for high-density, high-reliability transient suppression in automotive serial bus architectures and industrial fieldbus interfaces.

FAQ

What is the primary circuit role of the NSQA6V8AW5T2 in a CAN bus design?

The NSQA6V8AW5T2 serves as a unidirectional ESD protection array, clamping transient voltages on CAN_H and CAN_L lines to ground or V_CC rails. In a typical CAN node, it is placed between the connector and transceiver to limit ESD-induced stress to ≤13 V during ±8 kV contact events, preserving transceiver functionality without adding signal delay or capacitance-induced jitter. The NSQA6V8AW5T2 achieves this using four integrated Zener diodes in a single SC-88A package.

Does the NSQA6V8AW5T2 support bidirectional ESD protection?

No, the NSQA6V8AW5T2 is explicitly a unidirectional ESD protection device, as confirmed by its electrical characteristics table specifying breakdown voltage measured with forward-biased Zener test current and clamping behavior defined for positive-only transients relative to ground. Bidirectional protection would require symmetrical avalanche characteristics not present in this part; for bidirectional applications, onsemi's NUP4105MR6T1G or similar dual-rail arrays should be evaluated instead of the NSQA6V8AW5T2.

What is the maximum allowable ambient temperature for continuous operation of the NSQA6V8AW5T2?

The NSQA6V8AW5T2 has a specified operating junction temperature range of −40°C to +125°C. When mounted on a standard FR4 PCB with minimum copper pad, its thermal resistance is 327°C/W. To maintain junction temperature ≤125°C at full 380 mW per-diode power dissipation, ambient temperature must not exceed approximately 85°C - calculated using T_J = T_A + (P × R_JA). Derating curves in Figure 7 confirm 50% power reduction is required above 100°C ambient. This thermal limit applies directly to the NSQA6V8AW5T2.

Can the NSQA6V8AW5T2 be used to protect USB 2.0 data lines?

No, the NSQA6V8AW5T2 is not recommended for USB 2.0 data line protection due to its 12–15 pF junction capacitance at 0 V bias, which exceeds the 1–3 pF typical requirement for full-speed (12 Mbps) and high-speed (480 Mbps) USB signaling. Excessive capacitance causes signal rise-time degradation and eye diagram closure. While the NSQA6V8AW5T2 meets ESD standards, its capacitance profile is optimized for CAN/LIN (≤500 kbps), not USB. For USB, dedicated low-capacitance arrays like ESD7L5.0DT5G are preferred over the NSQA6V8AW5T2.

Is the NSQA6V8AW5T2 compliant with AEC-Q200 stress testing requirements?

The NSQA6V8AW5T2 is not explicitly qualified to AEC-Q200 in its datasheet (Rev. 6, October 2017), though it meets several relevant stress categories including temperature cycling (−55°C to +150°C storage), solder heat resistance (260°C for 10 s), and ESD per IEC 61000-4-2 Level 4. AEC-Q200 qualification requires additional tests such as mechanical shock, vibration, and humidity bias life - none of which are documented for the NSQA6V8AW5T2. Customers requiring AEC-Q200 certification should verify with onsemi's latest qualification reports or select AEC-Q200-qualified alternatives like the SZ1.5SMC5.0AT3G.

NSQA6V8AW5T2 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 4

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 5V

Voltage - Breakdown (Min):: 6.4V

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:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-88A (SC-70-5/SOT-353)

NSQA6V8AW5T2 FAQ

1.How can I place an order for NSQA6V8AW5T2 through Aetrix?

Please submit a Request for Quotation (RFQ) for NSQA6V8AW5T2 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 NSQA6V8AW5T2 reliable?

The price and inventory of NSQA6V8AW5T2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSQA6V8AW5T2 is usually 5 days.

3.What payment methods are accepted for NSQA6V8AW5T2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSQA6V8AW5T2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NSQA6V8AW5T2?

NSQA6V8AW5T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NSQA6V8AW5T2 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 NSQA6V8AW5T2?

For technical support, including NSQA6V8AW5T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSQA6V8AW5T2 requirements.

6.How does Aetrix verify that NSQA6V8AW5T2 is sourced from the original manufacturer or authorized distributors?

All NSQA6V8AW5T2 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 NSQA6V8AW5T2 meets industry standards.

7.What is the process for return or replacement of NSQA6V8AW5T2?

All NSQA6V8AW5T2 units undergo pre-shipment inspection (PSI). If there is an issue with NSQA6V8AW5T2, 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 NSQA6V8AW5T2 part is unused and in its original packaging.

Return procedure for NSQA6V8AW5T2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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