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onsemi NS6A5.0AFT3G
- Part No.:
- NS6A5.0AFT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
NS6A5.0AFT3G.pdf
- Description:
- TVS DIODE 5VWM 9.2VC SMA-FL
- Quantity:
- Payment:
- Shipping:
Inventory:147,468
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Product details
Overview
NS6A5.0AFT3G from onsemi is a unidirectional 500 W peak power Zener transient voltage suppressor (TVS) in SMA-FL package, with 5.0 V working peak reverse voltage (VRWM), 9.2 V clamping voltage (VC) at 65.2 A peak pulse current (IPP), and 6.4–7.0 V breakdown voltage (VBR) at 10 mA test current - designed to protect USB ports, low-voltage I/O lines, and microcontroller GPIOs against ESD and lightning-induced surges.
For engineers reviewing the NS6A5.0AFT3G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system operating voltage, VC < IC absolute maximum rating, IPP capability for expected surge energy, and SMA-FL footprint compatibility with high-density PCB layouts.
Technical Context
The NS6A5.0AFT3G operates as a unidirectional Zener-based TVS diode, leveraging avalanche breakdown to clamp transients above VRWM while maintaining low dynamic impedance. Its 5.0 V VRWM targets 3.3 V and 5 V logic rails, and its 9.2 V VC ensures safe margin below typical 12 V tolerant interface ICs.
It delivers Class 3 (>16 kV HBM) and Class 4 (>8 kV IEC 61000−4−2) ESD protection, with fast response time (<1 ns) and 2700 pF typical junction capacitance at 0 V bias - optimized for signal integrity preservation in high-speed digital interfaces without excessive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.0 V - sets minimum system operating voltage threshold before clamping begins |
| VBR @ IT=10 mA | 6.4–7.0 V - defines precise avalanche onset range for predictable turn-on behavior |
| VC @ IPP=65.2 A | 9.2 V - maximum clamped voltage seen by protected circuit during 10/1000 µs surge |
| IPP | 65.2 A - peak surge current handled at 500 W for 1 ms non-repetitive pulse |
| Ctyp @ 0 V, 1 MHz | 2700 pF - determines capacitive loading on data lines; impacts signal rise/fall times |
| ESD Rating (HBM) | >16 kV - exceeds IEC 61000-4-2 Level 4 for robust board-level ESD immunity |
| Package | SMA-FL (Case 403AA) - surface-mount, low-profile, Pb-free, RoHS-compliant plastic package |
Pinout & Package
SMA-FL package: void-free thermosetting plastic case with modified L-bend leads, cathode indicated by polarity band, mountable in any orientation, rated for 260°C soldering (10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to ground or low-side return path; defines forward conduction direction |
| Cathode | Transient input / protected line connection | Connected to signal line being protected; carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse power (10 × 1000 µs) | Enables protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 5 V buses |
| Low zener impedance & fast response | Minimizes voltage overshoot during sub-nanosecond ESD events on high-speed lines |
| AEC-Q101 qualified (SZ prefix variant) | Validated for automotive under-hood and infotainment applications requiring reliability certification |
| Pb-free, RoHS-compliant construction | Meets global environmental compliance requirements without compromising surge performance |
| Thermal resistance RJA = 250 °C/W | Supports continuous operation up to +150°C junction temperature in compact layouts |
Applications
| USB 2.0 Data Lines | Industrial PLC Digital Inputs |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 peripherals from ESD discharge and cable-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed directly at connector entry point. Use Value: 9.2 V clamping voltage stays well below USB transceiver's 12 V abs max rating, preserving signal integrity with 2700 pF capacitance. | Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on optocoupler input side, upstream of series current-limiting resistor. Use Value: 500 W surge rating handles repetitive 10/1000 µs transients per IEC 61000-4-4, with 5.0 V VRWM compatible with logic-level sensing thresholds. |
| Automotive Body Control Modules | Medical Sensor Interface Circuits |
Use Scenario: Shielding LIN bus transceivers and switch inputs in BCMs from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary protection stage after primary LC filtering, positioned near IC pins. Use Value: AEC-Q101 qualification (via SZNS6A5.0AFT3G variant) ensures reliability in automotive temperature and vibration environments. | Use Scenario: Guarding analog front-end inputs of patient monitoring devices against ESD during clinical handling. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on sensor signal paths to preserve small-signal accuracy. Use Value: 2700 pF capacitance avoids degrading bandwidth of mV-level biopotential signals while delivering >16 kV HBM ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A | Same VRWM (5.0 V) and VC (9.2 V), but SMB package (larger footprint, higher thermal mass) | Preferred where board space allows and higher thermal dissipation is needed for repeated surges | Select SMBJ5.0A when layout permits larger 2.5 mm × 4.5 mm footprint and long-term surge cycling is required |
| 1.5KE6.8A | Higher VRWM (6.8 V), higher VC (10.5 V), axial leaded DO-201 package, 1500 W rating | Suitable for higher-voltage industrial AC/DC supplies where 5 V clamping is insufficient | Choose 1.5KE6.8A only for non-SMT designs with ≥6.8 V nominal rail and need for legacy through-hole mounting |
Compared with SMBJ5.0A and 1.5KE6.8A, the NS6A5.0AFT3G offers optimal balance of low-profile SMT integration, precise 5.0 V clamping, and certified ESD robustness - making it ideal for space-constrained 3.3/5 V digital systems where footprint and signal integrity are critical.
Availability
NS6A5.0AFT3G is available at Aetrix Electronics and suitable for USB interface protection, industrial digital I/O conditioning, and automotive body electronics requiring stable component supply across production lifecycles.
Supply support for NS6A5.0AFT3G 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 manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The NS6AxxAFT3G series belongs to onsemi's transient voltage suppressor product line, engineered specifically for high-reliability, high-surge-capacity protection of low-voltage digital and mixed-signal interfaces in harsh electromagnetic environments.
FAQ
What is the maximum clamping voltage of the NS6A5.0AFT3G under standard surge conditions?
The NS6A5.0AFT3G has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current (IPP) of 65.2 A, measured using the standardized 10 × 1000 µs waveform. This value is guaranteed across temperature and ensures protected downstream ICs remain within their absolute maximum voltage ratings. The NS6A5.0AFT3G achieves this via low-dynamic-impedance Zener avalanche structure.
Is the NS6A5.0AFT3G suitable for protecting 3.3 V logic circuits?
Yes - the NS6A5.0AFT3G's 5.0 V VRWM provides sufficient margin above 3.3 V nominal rails while ensuring reliable clamping onset before damage occurs. Its 9.2 V VC remains safely below the 12–13.2 V absolute maximum ratings common in 3.3 V interface ICs. The NS6A5.0AFT3G is widely deployed in microcontroller GPIO and UART line protection for exactly this use case.
Does the NS6A5.0AFT3G meet automotive qualification standards?
The NS6A5.0AFT3G itself is not AEC-Q101 qualified; however, its automotive-grade variant SZNS6A5.0AFT3G is fully AEC-Q101 qualified and PPAP capable. Both share identical electrical specs and SMA-FL packaging. For automotive applications, specify SZNS6A5.0AFT3G - the NS6A5.0AFT3G is intended for industrial and commercial use.
What is the junction capacitance of the NS6A5.0AFT3G and how does it affect high-speed signals?
The NS6A5.0AFT3G exhibits 2700 pF typical junction capacitance at 0 V bias and 1 MHz, which may limit use on very high-speed differential lines (e.g., USB 3.0+, PCIe). However, for USB 2.0 (480 Mbps), RS-485, or CAN FD, this capacitance is acceptable when placed with short traces. The NS6A5.0AFT3G is best suited for moderate-speed digital interfaces where robustness outweighs ultra-low capacitance needs.
Can the NS6A5.0AFT3G replace older P6KE5.0A devices in existing designs?
The NS6A5.0AFT3G is not a direct drop-in replacement for P6KE5.0A due to different packages (SMA-FL vs. DO-15) and thermal characteristics. While both have similar VRWM and VC, the NS6A5.0AFT3G's lower RJA (250 °C/W vs. ~65 °C/W for P6KE) requires careful PCB layout review. Redesign is recommended - the NS6A5.0AFT3G offers superior ESD rating and modern RoHS compliance, but mechanical and thermal integration must be verified.
NS6A5.0AFT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2700pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA-FL
NS6A5.0AFT3G FAQ
1.How can I place an order for NS6A5.0AFT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for NS6A5.0AFT3G 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 NS6A5.0AFT3G reliable?
The price and inventory of NS6A5.0AFT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NS6A5.0AFT3G is usually 5 days.
3.What payment methods are accepted for NS6A5.0AFT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NS6A5.0AFT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NS6A5.0AFT3G?
NS6A5.0AFT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NS6A5.0AFT3G 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 NS6A5.0AFT3G?
For technical support, including NS6A5.0AFT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NS6A5.0AFT3G requirements.
6.How does Aetrix verify that NS6A5.0AFT3G is sourced from the original manufacturer or authorized distributors?
All NS6A5.0AFT3G 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 NS6A5.0AFT3G meets industry standards.
7.What is the process for return or replacement of NS6A5.0AFT3G?
All NS6A5.0AFT3G units undergo pre-shipment inspection (PSI). If there is an issue with NS6A5.0AFT3G, 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 NS6A5.0AFT3G part is unused and in its original packaging.
Return procedure for NS6A5.0AFT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NS6A5.0AFT3G 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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