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onsemi P6SMB10AT3
- Part No.:
- P6SMB10AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB10AT3.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:5,245
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Product details
Overview
P6SMB10AT3 from ON Semiconductor is a unidirectional 600 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of DC power rails and signal lines. It features a 8.55 V working peak reverse voltage (VRWM), 10 V nominal Zener breakdown voltage (VBR) at 1 mA test current, clamps to 14.5 V at 41 A peak pulse current (IPP), and responds in <1 ns to ESD and surge transients. It is used in automotive power supply inputs, industrial PLC I/O protection, and telecom interface circuits.
For engineers reviewing the P6SMB10AT3 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ circuit operating voltage, VC ≤ protected device's absolute maximum rating, IPP capability matching expected surge threat level (e.g., ISO 7637-2 Pulse 1/2a/5a), and UL 497B recognition for isolated loop safety compliance.
Technical Context
The P6SMB10AT3 operates as a unidirectional Zener-based TVS, conducting only during reverse overvoltage events while presenting high impedance under normal bias. Its clamping action relies on avalanche breakdown with low dynamic impedance, enabling fast energy diversion away from downstream ICs.
It is rated for 600 W non-repetitive peak pulse power (10/1000 µs waveform), supports 100 A forward surge current (8.3 ms half-sine), and maintains <5 µA leakage above 10 V. Thermal design requires junction-to-lead resistance of 40 °C/W and derating above 75 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 8.55 V - Maximum continuous reverse voltage before clamping begins; must exceed system DC operating voltage. |
| VBR @ IT = 1 mA | 9.5–10.5 V - Zener breakdown range; defines onset of avalanche conduction under controlled test conditions. |
| VC @ IPP = 41 A | 14.5 V - Clamped voltage during 600 W surge; determines maximum stress seen by protected load. |
| IPP | 41 A - Peak pulse current at which VC is specified; correlates to IEC 61000-4-5 Level 4 (4 kV) surge capability. |
| Leakage @ VRWM | 10 µA max - Low standby current ensures minimal power loss and no interference with upstream regulators. |
| Response Time | <1 ns - Enables suppression before transient energy couples into sensitive logic or analog circuitry. |
| ESD Rating | Class 3 HBM (>16 kV) - Meets stringent electrostatic discharge immunity requirements for end-equipment certification. |
| UL Recognition | UL 497B QVGQ2 - Certified for use in isolated loop circuit protection, including telecom and industrial safety-critical interfaces. |
Pinout & Package
Package: SMB (Case 403A), surface-mount, unidirectional, cathode indicated by polarity band. Dimensions: 4.06–4.60 mm width (E), 3.30–3.95 mm length (D), 1.90–2.45 mm height (A), with modified L-bend leads for enhanced pad adhesion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during surge | Connected to system ground or low-side reference; carries full IPP during clamping event. |
| Cathode | Reverse-biased Zener terminal / high-voltage input node | Connected to protected line (e.g., 12 V rail); voltage across cathode-anode rises until VRWM exceeded, then avalanches. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W Peak Pulse Power | Handles automotive load dump (ISO 7637-2 Pulse 5a) and industrial surge events without degradation. |
| UL 497B Recognition | Validated for safety-critical isolated loop protection in medical and telecom infrastructure equipment. |
| <1 ns Response Time | Minimizes overshoot in high-speed data lines and microcontroller I/O pins exposed to ESD. |
| Pb-Free SURMETIC® Package | RoHS-compliant thermoset plastic housing with corrosion-resistant, solderable leads (260°C/10 s compatible). |
| Low Clamping Ratio (VC/VBR) | 14.5 V / 10 V = 1.45 - Tight ratio ensures robust margin between operating voltage and clamp threshold. |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs subject to load dump transients up to 60 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to shunt surge energy before it reaches LDOs or MCU power pins. Use Value: Clamps 600 W surges to ≤14.5 V, preserving 3.3 V/5 V regulator input ratings and preventing latch-up in downstream silicon. | Use Scenario: 24 V digital input modules receiving signals from field sensors in factory automation environments. IC Role / Device Role / Timing Role: Parallel-connected TVS on each channel to absorb induced lightning surges and switching transients from solenoid drivers. Use Value: Limits transient voltage to safe levels for optocoupler input stages and microcontroller GPIOs, ensuring reliable state detection under EMC stress. |
| Telecom Interface Surge Protection | Medical Equipment Isolated Power Rails |
Use Scenario: RS-485 or Ethernet PHY interfaces exposed to ESD and induced surges in building cabling systems. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional P6SMB10AT3 guards positive rail against common-mode overvoltage relative to local ground. Use Value: Provides Class 3 HBM ESD immunity and meets IEC 61000-4-4 EFT requirements without adding capacitance that degrades signal integrity. | Use Scenario: Secondary-side 5 V/3.3 V isolated DC-DC outputs powering patient-monitoring analog front-ends. IC Role / Device Role / Timing Role: UL 497B-recognized TVS on isolated output rail to meet safety agency requirements for creepage/clearance and fault energy containment. Use Value: Enables regulatory approval for Class II medical devices by satisfying surge withstand and isolation barrier integrity tests per EN 60601-1. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Same SMB package, identical VRWM (8.55 V) and VC (14.5 V), but rated for 600 W with tighter VBR tolerance (9.5–10.5 V vs. P6SMB10AT3's 9.5–10.5 V); identical thermal specs. | No functional difference; validated for same automotive, industrial, and telecom surge standards. | Select SMBJ10A if requiring STMicroelectronics' qualification pedigree or dual-sourcing flexibility without layout change. |
| 1.5SMC10A | Larger SMC package (7.11 × 6.22 mm vs. SMB's 4.6 × 3.95 mm), higher thermal mass, same electrical specs (VRWM = 8.55 V, VC = 14.5 V @ 41 A), but lower mounting density. | Suitable where board space allows larger footprint and higher thermal inertia is beneficial for repetitive surge duty cycles. | Choose 1.5SMC10A when PCB layout permits larger package and long-term reliability under frequent surge exposure is prioritized over miniaturization. |
Compared with SMBJ10A and 1.5SMC10A, the P6SMB10AT3 delivers identical surge protection performance in the smallest standard surface-mount footprint (SMB), enabling higher component density on compact automotive and IoT PCBs while maintaining UL 497B recognition and Class 3 HBM ESD rating.
Availability
P6SMB10AT3 is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB10AT3 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 is a global semiconductor manufacturer specializing in power management, analog, sensor, and discrete solutions for automotive, industrial, and cloud power applications.
The P6SMB10AT3 belongs to the P6SMBxxAT3 series of unidirectional TVS diodes engineered for high-energy transient suppression in harsh environments-designed to protect voltage-sensitive components in automotive infotainment, industrial motor drives, and medical power supplies.
FAQ
What is the working peak reverse voltage (VRWM) of the P6SMB10AT3?
The P6SMB10AT3 has a working peak reverse voltage (VRWM) of 8.55 V. This value represents the maximum DC or continuous peak operating voltage the device can withstand in reverse bias without entering avalanche conduction. Engineers must ensure the VRWM exceeds the system's normal operating voltage-e.g., selecting P6SMB10AT3 for a nominal 9 V rail would be unsafe, but it is appropriate for a 5 V or 12 V rail with sufficient margin. The VRWM is measured at 25°C and is critical for avoiding premature clamping during steady-state operation.
How does the clamping voltage (VC) of the P6SMB10AT3 compare to its breakdown voltage (VBR)?
The P6SMB10AT3 exhibits a nominal Zener breakdown voltage (VBR) of 10 V at 1 mA test current, with a guaranteed range of 9.5–10.5 V. Its clamping voltage (VC) is 14.5 V at 41 A peak pulse current (IPP). This 4.5 V differential reflects the dynamic impedance of the device under surge conditions and defines the maximum voltage imposed on protected circuitry. A lower VC/VBR ratio-here 1.45-indicates superior clamping efficiency, making the P6SMB10AT3 effective for safeguarding 15 V-tolerant ICs on 12 V systems.
Is the P6SMB10AT3 suitable for bidirectional transient protection?
No, the P6SMB10AT3 is a unidirectional TVS diode and is not suitable for bidirectional transient protection. It conducts only during reverse overvoltage events (cathode positive relative to anode) and blocks forward current like a standard diode. For AC lines or interfaces requiring suppression of both positive and negative transients-such as RS-232 or USB D+/D− lines-a bidirectional variant like P6SMB10CAT3 must be used. Using P6SMB10AT3 in bidirectional applications leaves the forward-polarity transient unprotected and may cause failure.
What industry certifications does the P6SMB10AT3 hold?
The P6SMB10AT3 holds UL 497B recognition (File #E210057, Category QVGQ2) for isolated loop circuit protection and meets Class 3 Human Body Model (HBM) ESD immunity (>16 kV). UL 497B validation confirms suitability for safety-critical telecom and medical applications involving galvanic isolation barriers. Unlike basic flammability-only certifications, this recognition covers strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing-ensuring robustness in certified end equipment.
Can the P6SMB10AT3 be used in automotive applications compliant with ISO 7637-2?
Yes, the P6SMB10AT3 is suitable for automotive applications requiring ISO 7637-2 compliance, particularly Pulse 1 (inductive load disconnect) and Pulse 5a (load dump). Its 600 W peak pulse rating, 14.5 V clamping voltage at 41 A, and ability to handle 100 A forward surge current align with typical 12 V vehicle system requirements. When placed close to connectors or ECUs with short PCB traces, the P6SMB10AT3 limits transient voltage to safe levels for downstream regulators and MCUs-provided VRWM (8.55 V) is matched to the nominal rail voltage and layout minimizes parasitic inductance.
P6SMB10AT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 41A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 1690pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB10AT3 FAQ
1.How can I place an order for P6SMB10AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB10AT3 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 P6SMB10AT3 reliable?
The price and inventory of P6SMB10AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB10AT3 is usually 5 days.
3.What payment methods are accepted for P6SMB10AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB10AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB10AT3?
P6SMB10AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB10AT3 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 P6SMB10AT3?
For technical support, including P6SMB10AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB10AT3 requirements.
6.How does Aetrix verify that P6SMB10AT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB10AT3 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 P6SMB10AT3 meets industry standards.
7.What is the process for return or replacement of P6SMB10AT3?
All P6SMB10AT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB10AT3, 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 P6SMB10AT3 part is unused and in its original packaging.
Return procedure for P6SMB10AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB10AT3 Tags
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