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onsemi P6SMB13AT3
- Part No.:
- P6SMB13AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB13AT3.pdf
- Description:
- TVS DIODE 11.1VWM 18.2VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:9,502
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Product details
Overview
P6SMB13AT3 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 11.1 V working peak reverse voltage (VRWM), 13.05 V nominal breakdown voltage (VBR) at 1 mA test current, 18.2 V maximum clamping voltage (VC) at 33 A peak pulse current (IPP), and sub-1 ns response time. It is used in automotive power supply inputs, industrial PLC I/O modules, and telecom line interface circuits to absorb ESD and lightning-induced surges.
For engineers reviewing the P6SMB13AT3 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, SMB package mechanical data, clamping performance under standardized 8.3 ms surge waveforms, UL 497B certification status, and real-world selection guidance for circuit-level surge protection design.
Technical Context
The P6SMB13AT3 operates as a silicon avalanche diode with zener-based breakdown behavior, triggered when reverse voltage exceeds its specified VBR threshold. Its low dynamic impedance ensures stable clamping during high-current transients, while its thermally robust SURMETIC® SMB package enables reliable operation up to +150°C junction temperature.
It complies with Class 3 ESD immunity (>16 kV HBM), meets UL 497B requirements for isolated loop circuit protection, and is rated for non-repetitive 600 W peak pulse power per 10/1000 µs waveform. The device exhibits <5 µA leakage at VRWM and 33 A maximum IPP - values confirmed in ON Semiconductor's official P6SMB6.8AT3 Series datasheet Rev. 10.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 11.1 V - Maximum continuous reverse operating voltage before clamping begins; must be ≥ system DC rail voltage. |
| VBR @ IT = 1 mA | 13.05 V (nominal) - Avalanche breakdown initiates here; defines minimum overvoltage trip point. |
| VC @ IPP = 33 A | 18.2 V - Clamped voltage seen by protected circuit during full-rated 8.3 ms surge; determines stress on downstream components. |
| PPK | 600 W - Peak transient power handling capability per single 10/1000 µs pulse; defines surge energy absorption limit. |
| IR @ VRWM | 5 µA - Reverse leakage current at working voltage; ensures minimal standby power loss and signal integrity. |
| Response Time | <1 ns - Time from transient onset to conduction onset; critical for protecting fast logic and analog interfaces. |
| UL Recognition | UL 497B QVGQ2 - Certified for use in isolated loop circuit protection; validates safety compliance for industrial/comms systems. |
Pinout & Package
The P6SMB13AT3 is housed in an SMB (DO-214AA) surface-mount package per CASE 403A, featuring a cathode-indicating polarity band and modified L-bend leads for enhanced solder joint reliability. Package dimensions: 4.06–4.60 mm width (E), 3.30–3.95 mm length (D), 1.90–2.45 mm height (A), with 0.76–1.60 mm lead length (L).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-biased operation | Connected to system ground or lower-potential rail; establishes reference for clamping action. |
| Cathode | Transient voltage sensing and clamping node | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VRWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without derating in typical PCB layouts. |
| UL 497B recognition (QVGQ2) | Validates suitability for certified isolated loop protection in industrial control and building automation systems. |
| ESD Class 3 (>16 kV HBM) | Meets stringent electrostatic discharge immunity requirements for automotive and handheld equipment interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients, reducing risk of latch-up or damage to 15 V-tolerant ICs. |
| Pb-free (RoHS-compliant) "G" variant | Ensures compliance with global environmental regulations and compatibility with lead-free reflow profiles (260°C/10 s). |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before they reach PMICs or microcontrollers. Use Value: Limits peak voltage to ≤18.2 V during 33 A surges, preventing brownout or permanent damage to 16 V max-rated regulators. |
Use Scenario: 24 V digital input channels in programmable logic controllers subject to field-wiring induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel to shunt induced transients to common ground before signal conditioning circuitry. Use Value: Sub-1 ns response ensures clamping occurs before 100 ns edge rates of industrial sensors cause false triggering or latch-up. |
| Telecom Line Interface Protection | Medical Equipment Power Rail Protection |
Use Scenario: RS-485 transceiver power pins connected to long cable runs in building management networks. IC Role / Device Role / Timing Role: TVS on VCC line upstream of transceiver to absorb coupled lightning surges entering via data lines. Use Value: UL 497B certification confirms safe operation in isolated communication loops where fault current paths are constrained. |
Use Scenario: Auxiliary 12 V supply rail in diagnostic imaging devices requiring high-reliability surge suppression. IC Role / Device Role / Timing Role: Primary overvoltage clamp on regulated output feeding sensitive analog front-end circuitry. Use Value: 5 µA leakage at 11.1 V ensures no measurable impact on low-noise sensor biasing or ADC reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A | Same SMB package, identical VRWM (11.1 V), but higher VC (19.9 V @ 31.4 A) and lower IPP (31.4 A vs. 33 A). | Marginally reduced clamping performance; suitable where layout allows minor voltage headroom increase. | Select SMBJ13A only if legacy design uses SMBJ-series footprint and UL 497B is not required. |
| 1.5SMC13A | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VRWM (11.1 V), VC = 21.2 V @ 71 A. | Requires PCB redesign due to 7.11 mm × 6.22 mm footprint vs. SMB's 4.32 mm × 3.56 mm; suited for high-energy environments. | Choose 1.5SMC13A when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger package. |
Compared with SMBJ13A and 1.5SMC13A, the P6SMB13AT3 offers optimal balance of compact SMB footprint, UL 497B certification, and precise 18.2 V clamping - making it preferred for space-constrained industrial and automotive modules requiring regulatory compliance.
Availability
P6SMB13AT3 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply across multi-year production cycles.
Supply support for P6SMB13AT3 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 power management, analog, sensor, and discrete solutions for automotive, industrial, and cloud power applications.
The P6SMB13AT3 belongs to the P6SMBxxAT3 series of unidirectional TVS diodes engineered specifically for cost-sensitive, high-reliability surge protection in harsh electromagnetic environments - with emphasis on UL-certified industrial and transportation systems.
FAQ
What is the maximum clamping voltage of the P6SMB13AT3 under standard surge conditions?
The P6SMB13AT3 has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current of 33 A, measured using the industry-standard 8.3 ms half-sine waveform. This value is guaranteed per ON Semiconductor's P6SMB6.8AT3 Series datasheet Rev. 10 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. Designers must ensure downstream components tolerate at least 18.2 V for short durations.
Does the P6SMB13AT3 meet UL 497B certification requirements?
Yes, the P6SMB13AT3 carries UL 497B recognition under file #E210057 in the QVGQ2 protector category. This certification covers dielectric withstand, strike voltage breakdown, endurance conditioning, and discharge testing - confirming its suitability for isolated loop circuit protection in industrial control and communications equipment. The "G" suffix denotes Pb-free compliance, which is included in the UL evaluation.
What is the thermal resistance from junction-to-lead (RJL) for the P6SMB13AT3?
The P6SMB13AT3 has a thermal resistance from junction-to-lead (RJL) of 40 °C/W, measured with zero lead length on a 1″ square copper pad FR-4 board. This parameter governs heat dissipation during repetitive surge events and informs derating calculations above 75°C ambient. At 25°C, the device supports 3.0 W DC power dissipation; above 75°C, it derates linearly at 25 mW/°C.
How does the P6SMB13AT3 differ from bidirectional TVS diodes like P6SMB13CAT3?
The P6SMB13AT3 is unidirectional and functions only during reverse-voltage transients, making it ideal for DC power rail protection where polarity is fixed. In contrast, P6SMB13CAT3 is bidirectional and clamps both positive and negative excursions - used in AC-coupled signal lines or differential buses like RS-485. Their VBR and VC ratings differ accordingly; P6SMB13AT3 has 13.05 V VBR, while P6SMB13CAT3 specifies symmetric ±13.05 V breakdown.
What is the reverse leakage current specification for the P6SMB13AT3 at its working voltage?
The P6SMB13AT3 specifies a maximum reverse leakage current (IR) of 5 µA at its working peak reverse voltage (VRWM) of 11.1 V, tested at 25°C ambient. This low leakage ensures minimal power loss in always-on systems and prevents signal distortion in high-impedance sensing nodes. Leakage remains below 10 µA up to 125°C, supporting operation in under-hood automotive environments.
P6SMB13AT3 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):
- 11.1V
- Voltage - Breakdown (Min):
- 12.4V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 33A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 1335pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB13AT3 FAQ
1.How can I place an order for P6SMB13AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB13AT3 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 P6SMB13AT3 reliable?
The price and inventory of P6SMB13AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB13AT3 is usually 5 days.
3.What payment methods are accepted for P6SMB13AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB13AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB13AT3?
P6SMB13AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB13AT3 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 P6SMB13AT3?
For technical support, including P6SMB13AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB13AT3 requirements.
6.How does Aetrix verify that P6SMB13AT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB13AT3 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 P6SMB13AT3 meets industry standards.
7.What is the process for return or replacement of P6SMB13AT3?
All P6SMB13AT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB13AT3, 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 P6SMB13AT3 part is unused and in its original packaging.
Return procedure for P6SMB13AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB13AT3 Tags
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