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onsemi 1SMB6.0AT3G
- Part No.:
- 1SMB6.0AT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1SMB6.0AT3G.pdf
- Description:
- TVS DIODE 6VWM 10.3VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:27,500
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Product details
Overview
1SMB6.0AT3G from ON Semiconductor is a unidirectional 600 W peak power Zener transient voltage suppressor (TVS) designed for parallel clamping protection of sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 6.0 V working peak reverse voltage (VRWM), 10.3 V maximum clamping voltage at 58.3 A peak pulse current (VC @ IPP), and <1.0 ns response time. It is widely deployed in automotive power line protection and industrial DC power supply inputs.
For engineers reviewing the 1SMB6.0AT3G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ circuit operating voltage, VC margin relative to protected IC absolute maximum ratings, surge current handling (IPP = 58.3 A), UL 497B recognition for isolated loop circuits, and SMB package thermal performance under repetitive surge conditions.
Technical Context
The 1SMB6.0AT3G operates as a voltage-clamped shunt protector: under normal bias it presents <500 µA leakage at 6.0 V, but triggers avalanche conduction when transient voltage exceeds its 6.67–7.02 V breakdown range (VBR @ IT = 10 mA). Its low zener impedance and fast junction response enable sub-nanosecond turn-on to limit overshoot.
It is rated for 600 W non-repetitive peak pulse power (10/1000 µs waveform), with thermal derating starting at 75°C junction temperature. The device meets AEC-Q101 for automotive use and carries UL 497B recognition for isolated loop circuit protection-critical for telecom and industrial interface ports.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 6.0 V - Maximum continuous reverse operating voltage before clamping begins; must be ≥ system DC rail voltage. |
| VBR @ IT=10 mA | 6.67–7.02 V - Measured breakdown threshold; defines onset of avalanche conduction under standardized test current. |
| VC @ IPP=58.3 A | 10.3 V - Clamped voltage during 600 W surge; determines maximum stress on downstream components. |
| IPP | 58.3 A - Peak pulse current supported at 10/1000 µs waveform; defines surge energy handling capability. |
| Leakage @ VRWM | <500 µA - Low standby current ensures minimal power loss and signal integrity in high-impedance circuits. |
| Response Time | <1.0 ns - Enables effective suppression of fast-rising ESD events (IEC 61000-4-2) before damage occurs. |
| ESD Rating | Class 3 (>16 kV HBM) - Validated robustness against human-body-model electrostatic discharge. |
| UL Recognition | UL 497B (QVGQ2 File #E210057) - Certified for use in isolated loop protection circuits per safety standard. |
Pinout & Package
Package: SMB (Case 403A), surface-mount, Pb-free, void-free thermosetting plastic with modified L-bend leads and cathode polarity band. Dimensions: 4.32 mm × 3.56 mm × 2.20 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to ground or low-impedance return path; carries full surge current during transient event. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., +12 V rail); polarity band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports high-energy transients (e.g., ISO 7637-2 Pulse 1/2/5a in automotive) without failure. |
| AEC-Q101 qualified | Validated for automotive underhood and powertrain applications requiring extended temperature and reliability compliance. |
| UL 497B recognition | Enables use in certified isolated loop interfaces (e.g., RS-485, CAN bus front-ends) without additional safety certification. |
| <1.0 ns response time | Minimizes voltage overshoot during ESD events, reducing risk of latch-up or gate oxide damage in connected ICs. |
| Pb-free SURMETIC™ package | RoHS-compliant construction with corrosion-resistant finish and solderable leads (260°C/10 s compatible). |
Applications
| Automotive Power Line Protection | Industrial DC Power Input |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt clamping TVS placed between power rail and chassis ground, triggered only during overvoltage events. Use Value: Limits transient voltage to ≤10.3 V, preventing damage to MCU power supplies and CAN transceivers rated for 16 V absolute max. |
Use Scenario: Safeguarding 24 V industrial PLC power inputs against inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor absorbing energy from >100 A switching events within microsecond timescales. Use Value: Withstands 58.3 A peak pulse current while maintaining clamping below 10.3 V, preserving upstream rectifier and downstream regulators. |
| Telecom Interface Protection | Medical Equipment Power Rails |
|
Use Scenario: Shielding RS-485 data lines and auxiliary power in base station remote units from lightning-induced surges. IC Role / Device Role / Timing Role: UL 497B-recognized protector on isolated secondary-side power rails feeding communication ICs. Use Value: Certified isolation loop compliance enables direct integration into safety-critical telecom infrastructure without redesign. |
Use Scenario: Securing internal 5 V/3.3 V logic rails in portable diagnostic devices exposed to ESD during clinical handling. IC Role / Device Role / Timing Role: Low-leakage (<500 µA) clamping diode protecting ADC reference inputs and sensor signal chains. Use Value: Sub-1 ns response prevents ESD-induced measurement errors or temporary digital lockup in Class II medical systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SZ1SMB6.0AT3G | AEC-Q101 qualified variant with automotive-specific traceability and PPAP documentation; identical electrical specs and package. | Required for Tier-1 automotive production; not necessary for industrial or consumer designs. | Select SZ1SMB6.0AT3G when automotive qualification and change control are mandated by OEM requirements. |
| 1SMB6.0AHE3/73 | Same SMB package and VRWM/VBR/VC specs, but manufactured by Vishay; RoHS-compliant with slightly higher IR (1 mA max @ VRWM). | Approved for use in legacy industrial BOMs where Vishay sourcing is preferred; no UL 497B recognition. | Choose 1SMB6.0AHE3/73 if UL certification is not required and dual-sourcing across ON Semi and Vishay is desired. |
Compared with 1SMB6.0AT3G, SZ1SMB6.0AT3G adds automotive process controls without altering electrical behavior, while 1SMB6.0AHE3/73 offers second-source availability but lacks UL 497B-making the original ON Semi part optimal for safety-certified or high-reliability deployments.
Availability
1SMB6.0AT3G is available at Aetrix Electronics and suitable for automotive power line protection, industrial DC power input hardening, telecom interface safeguarding, and medical equipment power rail stabilization requiring stable component supply and long-term lifecycle support.
Supply support for 1SMB6.0AT3G 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
ON Semiconductor (now onsemi) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1SMB6.0AT3G belongs to the SMB-series transient voltage suppressor family, engineered specifically for high-power, fast-response clamping in harsh electromagnetic environments-including automotive load dump, industrial motor drive noise, and telecom surge events.
FAQ
What is the clamping voltage of the 1SMB6.0AT3G at its rated peak pulse current?
The 1SMB6.0AT3G has a maximum clamping voltage (VC) of 10.3 V at its rated peak pulse current (IPP) of 58.3 A, measured using the standard 10/1000 µs double-exponential surge waveform. This value is critical for ensuring downstream components remain within their absolute maximum voltage ratings during transient events. The 1SMB6.0AT3G achieves this clamping performance while maintaining low dynamic impedance and sub-nanosecond response.
Is the 1SMB6.0AT3G suitable for automotive applications?
Yes, the 1SMB6.0AT3G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications including engine control units, body electronics, and infotainment power supplies. It meets stringent requirements for temperature cycling, humidity resistance, and surge robustness. For full automotive production, the SZ-prefix variant (SZ1SMB6.0AT3G) is recommended due to enhanced process controls-but the 1SMB6.0AT3G itself satisfies AEC-Q101 test criteria and is widely used in automotive designs.
Does the 1SMB6.0AT3G have UL recognition for safety-critical circuits?
Yes, the 1SMB6.0AT3G carries UL 497B recognition (File #E210057, Category QVGQ2) for isolated loop circuit protection. This certification validates its performance in surge suppression for telecom, industrial automation, and medical interfaces where galvanic isolation and fire-safety compliance are mandatory. Unlike basic flammability-only approvals, UL 497B covers dielectric withstand, endurance conditioning, and strike voltage breakdown-ensuring reliable operation in certified safety systems.
What is the maximum working peak reverse voltage (VRWM) for the 1SMB6.0AT3G?
The 1SMB6.0AT3G has a working peak reverse voltage (VRWM) of 6.0 V, meaning it remains in high-impedance blocking mode up to this DC or continuous peak voltage level. This parameter is essential for selecting the correct TVS: VRWM must be ≥ the normal operating voltage of the protected line to avoid leakage or premature conduction. For a nominal 5 V system, the 1SMB6.0AT3G provides appropriate margin while minimizing clamping voltage overhead.
How does the 1SMB6.0AT3G compare to bidirectional TVS diodes in surge protection?
The 1SMB6.0AT3G is unidirectional and optimized for DC power line protection where polarity is fixed-offering lower clamping voltage and tighter VBR tolerance than equivalent bidirectional parts. Bidirectional variants (e.g., 1SMB6.0CAT3G) are used for AC or signal-line protection where voltage swings both polarities. Using the 1SMB6.0AT3G on a DC rail avoids unnecessary capacitance and leakage penalties inherent in bidirectional designs, improving efficiency and noise immunity in power-supply applications.
1SMB6.0AT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 58.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2300pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
1SMB6.0AT3G FAQ
1.How can I place an order for 1SMB6.0AT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SMB6.0AT3G 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 1SMB6.0AT3G reliable?
The price and inventory of 1SMB6.0AT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SMB6.0AT3G is usually 5 days.
3.What payment methods are accepted for 1SMB6.0AT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SMB6.0AT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SMB6.0AT3G?
1SMB6.0AT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SMB6.0AT3G 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 1SMB6.0AT3G?
For technical support, including 1SMB6.0AT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SMB6.0AT3G requirements.
6.How does Aetrix verify that 1SMB6.0AT3G is sourced from the original manufacturer or authorized distributors?
All 1SMB6.0AT3G 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 1SMB6.0AT3G meets industry standards.
7.What is the process for return or replacement of 1SMB6.0AT3G?
All 1SMB6.0AT3G units undergo pre-shipment inspection (PSI). If there is an issue with 1SMB6.0AT3G, 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 1SMB6.0AT3G part is unused and in its original packaging.
Return procedure for 1SMB6.0AT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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