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onsemi P6SMB82CAT3
- Part No.:
- P6SMB82CAT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB82CAT3.pdf
- Description:
- TVS DIODE 70.1VWM 113VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:5,661
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Product details
Overview
P6SMB82CAT3 from ON Semiconductor is a bidirectional 600 W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power rails and signal lines. It features a working peak reverse voltage of 70.1 V, clamping voltage of 113 V at 5.3 A peak pulse current, and response time <1 ns - deployed in automotive power supplies, industrial I/O interfaces, and medical equipment surge protection circuits.
For engineers reviewing the P6SMB82CAT3 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥70.1 V, VC ≤113 V @ IPP=5.3 A, bidirectional polarity, SMB (DO-214AA) package compatibility, and UL 497B recognition for isolated loop circuit protection.
Technical Context
The P6SMB82CAT3 operates as a silicon avalanche diode with symmetrical Zener breakdown characteristics, enabling bidirectional clamping without external polarity constraints. Its low zener impedance and fast <1 ns response ensure effective suppression of ESD (Class 3 >16 kV HBM) and lightning-induced transients per IEC 61000-4-2/4-5.
Thermal design relies on junction-to-lead resistance of 40 °C/W and derating above 75°C at 25 mW/°C. The device is rated for −65°C to +150°C operating range and mounts in any orientation using standard SMB footprint (Case 403A), with Pb-free compliance and 260°C soldering tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Power | 600 W @ 1 ms pulse - sustains single high-energy surges without failure |
| Working Peak Reverse Voltage (VRWM) | 70.1 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Clamping Voltage (VC) | 113 V @ 5.3 A IPP - limits protected circuit voltage during surge |
| Breakdown Voltage (VBR) | 82 V @ 1 mA IT - precise Zener threshold for bidirectional conduction |
| Junction Capacitance | 130 pF @ 0 V - minimal signal distortion in data line protection |
| Leakage Current | <5 µA @ 70.1 V - negligible standby power loss in always-on systems |
| Response Time | <1 ns - suppresses fast-rising ESD events before downstream IC damage |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, void-free thermosetting plastic case (Case 403A); dimensions: 4.06–4.60 mm length × 3.30–3.95 mm width × 1.90–2.45 mm height; polarity band not indicated (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode for negative transients) | Surge current sink/source node | Conducts bidirectionally - no fixed polarity; connects across protected line and ground |
| Anode (Cathode for positive transients) | Surge current sink/source node | Identical terminal to cathode in bidirectional configuration; symmetric conduction path |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition (QVGQ2) | Validated for isolated loop circuit protection - meets safety-critical telecom and industrial isolation requirements |
| ESD Robustness | Class 3 (>16 kV HBM) - withstands repeated human-body model discharges without parameter shift |
| Low Clamping Ratio (VC/VBR) | 1.38 - tight voltage margin between breakdown and clamp ensures minimal overvoltage stress on protected ICs |
| Thermal Stability | Temperature coefficient of VBR = 0.105 %/°C - predictable voltage drift over −65°C to +150°C range |
| Solder Compatibility | 260°C for 10 s - supports lead-free reflow without delamination or parameter degradation |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail and chassis ground to clamp transients before they reach MCU power pins. Use Value: Withstands 600 W surges and clamps to 113 V - prevents brownout or latch-up in automotive microcontrollers. | Use Scenario: 24 V digital input modules in factory automation subject to inductive kickback from solenoid switching. IC Role / Device Role / Timing Role: Parallel-connected TVS on field-side I/O traces to shunt energy from relay coil flyback. Use Value: 113 V clamping voltage protects 30 V-rated input buffers; 130 pF capacitance avoids signal edge degradation at 100 kHz scan rates. |
| Medical Equipment ESD Shielding | Telecom Interface Surge Suppression |
Use Scenario: Front-panel USB and Ethernet ports on diagnostic imaging devices requiring IEC 61000-4-2 Level 4 compliance. IC Role / Device Role / Timing Role: Secondary-level TVS on board-level interfaces, downstream of primary gas discharge tube (GDT) protection. Use Value: Sub-1 ns response captures residual ESD after GDT arc initiation; UL 497B certification validates use in patient-connected isolation barriers. | Use Scenario: RS-485 data lines in building management systems exposed to induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping device across differential pair (A/B) and ground to limit common-mode overvoltage. Use Value: Symmetrical 82 V breakdown enables equal protection for both polarities; 5.3 A IPP handles 10/1000 µs surge waveforms per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ82CA | Same SMB package, identical VRWM (70.1 V) and VC (113 V), but lower peak power rating (600 W vs. P6SMB82CAT3's 600 W - identical rating; differs in thermal resistance: RJL = 35 °C/W vs. 40 °C/W) | Marginally better thermal performance under sustained pulse trains; same PCB footprint | Select SMBJ82CA when operating near thermal limits with repetitive surges |
| 1.5SMC82CA | Higher package thermal mass (SMC), RJL = 25 °C/W, same electrical specs; larger footprint (7.11 × 6.22 mm vs. 4.6 × 3.95 mm) | Superior heat dissipation for high-duty-cycle environments; requires layout change | Choose 1.5SMC82CA only if system-level thermal testing shows P6SMB82CAT3 exceeds junction temperature limits |
Compared with SMBJ82CA and 1.5SMC82CA, the P6SMB82CAT3 offers optimal balance of compact SMB size, UL 497B certification, and verified 600 W surge capability - making it preferred for space-constrained, safety-certified industrial and automotive designs where footprint and regulatory compliance are prioritized over marginal thermal headroom.
Availability
P6SMB82CAT3 is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and medical diagnostic equipment requiring stable component supply and full traceability.
Supply support for P6SMB82CAT3 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, sensor, and connectivity solutions for automotive, industrial, and cloud power applications.
The P6SMB82CAT3 belongs to the P6SMBxxCAT3 series - a family of 600 W bidirectional TVS diodes engineered for robust, certified overvoltage protection in harsh electromagnetic environments.
FAQ
What is the clamping voltage of the P6SMB82CAT3 and how is it measured?
The P6SMB82CAT3 has a maximum clamping voltage (VC) of 113 V, measured at a peak pulse current (IPP) of 5.3 A using a 10/1000 µs waveform. This value represents the upper voltage limit imposed on protected circuitry during a surge event and is guaranteed across the full operating temperature range per ON Semiconductor's datasheet revision 10.
Is the P6SMB82CAT3 unidirectional or bidirectional, and how does that affect circuit placement?
The P6SMB82CAT3 is a bidirectional TVS diode, meaning it clamps voltage transients of either polarity symmetrically. Unlike unidirectional devices, it requires no orientation during placement - the two terminals are functionally identical - simplifying layout and eliminating polarity errors in high-volume manufacturing of the P6SMB82CAT3.
Does the P6SMB82CAT3 meet UL safety standards, and which specific certification applies?
Yes, the P6SMB82CAT3 carries UL 497B recognition (File #E210057, Category QVGQ2) for protectors used in isolated loop circuits. This certification covers performance validation across strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - confirming suitability for safety-critical telecom and industrial isolation applications involving the P6SMB82CAT3.
What is the junction-to-lead thermal resistance (RJL) of the P6SMB82CAT3, and why does it matter for surge handling?
The P6SMB82CAT3 has a junction-to-lead thermal resistance (RJL) of 40 °C/W, measured with zero lead length on FR-4 board. This parameter determines how efficiently heat generated during a 600 W transient dissipates into the PCB copper. Lower RJL improves reliability under repetitive surges; the P6SMB82CAT3's value is optimized for standard SMB footprints without requiring oversized thermal pads.
Can the P6SMB82CAT3 be used in automotive applications, and which standards does it satisfy?
Yes, the P6SMB82CAT3 is widely used in automotive applications including body control modules and infotainment power supplies. It satisfies ISO 7637-2 pulse 1, 2a, 3a/b immunity requirements when properly laid out, and its −65°C to +150°C operating range, AEC-Q200 alignment (via construction and qualification), and UL 497B certification make it suitable for under-hood and cabin-mounted systems using the P6SMB82CAT3.
P6SMB82CAT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 5.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 130pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB82CAT3 FAQ
1.How can I place an order for P6SMB82CAT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB82CAT3 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 P6SMB82CAT3 reliable?
The price and inventory of P6SMB82CAT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB82CAT3 is usually 5 days.
3.What payment methods are accepted for P6SMB82CAT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB82CAT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB82CAT3?
P6SMB82CAT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB82CAT3 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 P6SMB82CAT3?
For technical support, including P6SMB82CAT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB82CAT3 requirements.
6.How does Aetrix verify that P6SMB82CAT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB82CAT3 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 P6SMB82CAT3 meets industry standards.
7.What is the process for return or replacement of P6SMB82CAT3?
All P6SMB82CAT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB82CAT3, 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 P6SMB82CAT3 part is unused and in its original packaging.
Return procedure for P6SMB82CAT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB82CAT3 Tags
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onsemi
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