My Inquiry
My Account
onsemi P6SMB8.2AT3
- Part No.:
- P6SMB8.2AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2AT3.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,736
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB8.2AT3 from ON Semiconductor is a unidirectional 600 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of sensitive electronics. It features a 7.02 V working peak reverse voltage (VRWM), 8.2 V nominal Zener breakdown voltage at 10 mA test current, and clamps transients to ≤12.1 V at 50 A peak pulse current. It is used in power supply input stages, automotive ECUs, and industrial I/O interfaces to absorb ESD and lightning-induced surges.
For engineers reviewing the P6SMB8.2AT3 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ circuit operating voltage, clamping voltage margin relative to IC absolute maximum ratings, surge current capability under 10/1000 µs waveform, and UL 497B recognition for isolated loop protection compliance.
Technical Context
The P6SMB8.2AT3 operates as a unidirectional Zener-based TVS, conducting only in reverse bias above its breakdown threshold. Its low zener impedance and <1 ns response time enable fast clamping of high-energy transients while minimizing overshoot in properly laid-out circuits.
It is rated for 600 W peak pulse power (10/1000 µs waveform), supports 100 A non-repetitive forward surge current, and exhibits <200 µA reverse leakage at 7.02 V. Thermal design must account for 226°C/W junction-to-ambient resistance on FR-4 with minimum footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 7.02 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=10 mA | 7.79–8.61 V - Confirmed Zener breakdown range ensures reliable turn-on margin above VRWM |
| VC @ IPP=50 A | 12.1 V - Clamping voltage limits protected circuit stress during worst-case surge |
| PPK | 600 W - Peak surge energy absorption capacity per single 1 ms pulse |
| IR @ VRWM | 200 µA - Low leakage preserves system efficiency in standby and low-power modes |
| Response Time | <1 ns - Enables suppression of fast-rising ESD and switching noise transients |
| UL Recognition | UL 497B - Certified for isolated loop circuit protection in telecom and industrial systems |
Pinout & Package
Surface-mount SMB package (Case 403A), void-free thermosetting plastic body with modified L-bend leads; cathode indicated by polarity band; RoHS-compliant Pb-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference node | Connected to ground or low-impedance return path; defines conduction direction for unidirectional clamping |
| Cathode | Transient voltage sensing node | Connected to protected line (e.g., DC input rail); conducts when voltage exceeds VRWM + margin |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| ESD rating >16 kV HBM | Meets IEC 61000-4-2 Level 4 (±8 kV contact) for robust board-level ESD immunity |
| Clamp voltage ≤12.1 V @ 50 A | Provides safe margin below 13.2 V absolute max rating of common 12 V logic and MCU I/O |
| UL 497B recognition | Validates suitability for safety-critical telecom and industrial isolated interface protection |
| SURMETIC® package reliability | Proven moisture resistance and thermal cycling performance in automotive under-hood environments |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) I/O |
|---|---|
Use Scenario: 12 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rail to clamp transients before they reach upstream DC-DC converters and microcontrollers. Use Value: Limits voltage excursion to ≤12.1 V during 50 A surge, preventing latch-up or gate oxide damage in 12 V-rated power management ICs. | Use Scenario: LIN bus signal line and sensor supply lines in BCM subjected to battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Parallel-connected TVS on 12 V sensor VCC and LIN data lines to shunt energy during ISO 7637-2 Pulse 1/2a events. Use Value: Maintains signal integrity by clamping within 1 ns and surviving repeated 100 V/50 ms pulses per automotive qualification requirements. |
| Medical Equipment AC/DC Adapter Interface | Point-of-Sale Terminal USB Power Port |
Use Scenario: Secondary-side 5 V/12 V outputs of medical-grade AC/DC adapters connected to sensitive analog front-end circuitry. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output rails to suppress coupling from primary-side switching noise and external ESD events. Use Value: UL 497B certification confirms compliance with medical isolation barrier protection standards, enabling Class II design approval. | Use Scenario: 5 V VBUS line of USB Type-A port in retail terminal exposed to user-handled ESD and hot-plug voltage spikes. IC Role / Device Role / Timing Role: Primary overvoltage guard between USB connector and USB power switch IC or load switch. Use Value: 600 W surge rating absorbs multiple ±15 kV contact ESD strikes without parametric shift, ensuring long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | VRWM = 8.0 V, VBR min = 8.89 V, VC = 12.0 V @ 51.2 A - slightly higher VRWM and tighter VBR tolerance | Better suited for 8.5–9.0 V nominal rails where margin above 8.0 V is required | Select SMBJ8.0A when operating voltage approaches 8.0 V and tighter clamping consistency is needed |
| 1.5SMC8.2A | Same VRWM/VBR/VC specs but in larger SMC package (DO-214AB); 1500 W peak power rating | Used where higher surge endurance or legacy SMC footprint compatibility is mandatory | Choose 1.5SMC8.2A only if PCB layout allows SMC size or 1500 W surge headroom is required |
Compared with P6SMB8.2AT3, SMBJ8.0A offers higher VRWM headroom for 8 V systems but identical clamping performance, while 1.5SMC8.2A trades SMB's compactness for greater surge capacity and thermal mass-neither is pin-compatible due to differing package footprints.
Availability
P6SMB8.2AT3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, and medical device interfaces requiring stable component supply and certified surge protection.
Supply support for P6SMB8.2AT3 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, sensors, and discrete devices for automotive, industrial, and communications markets.
The P6SMB8.2AT3 belongs to the P6SMBxxAT3 series of unidirectional TVS diodes engineered for cost-effective, high-reliability overvoltage protection in space-constrained surface-mount applications.
FAQ
What is the working peak reverse voltage (VRWM) of the P6SMB8.2AT3?
The P6SMB8.2AT3 has a VRWM of 7.02 V, meaning it remains non-conductive up to this reverse voltage level under normal operation. This value is selected to be ≥10% below the 8.2 V nominal Zener breakdown voltage, ensuring stable blocking behavior while allowing sufficient margin for system voltage tolerances and temperature drift. The P6SMB8.2AT3 maintains this rating across its full operating temperature range of −65 °C to +150 °C.
How does the clamping voltage of P6SMB8.2AT3 compare to its breakdown voltage?
The P6SMB8.2AT3 clamps at ≤12.1 V when subjected to a 50 A peak pulse current (10/1000 µs waveform), which is approximately 48% above its nominal 8.2 V breakdown voltage. This controlled voltage rise reflects the device's low dynamic impedance and ensures predictable protection behavior. Unlike avalanche diodes with wide VBR spreads, the P6SMB8.2AT3's tight 7.79–8.61 V breakdown range guarantees consistent clamping onset across production lots.
Is P6SMB8.2AT3 certified for safety-critical applications?
Yes, the P6SMB8.2AT3 carries UL 497B recognition (File #E210057) for isolated loop circuit protection, validating its use in telecom interfaces, medical equipment secondary-side isolation barriers, and industrial fieldbus systems. This certification covers rigorous testing including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge performance-going beyond basic flammability compliance required for many competing TVS diodes.
What is the maximum surge current the P6SMB8.2AT3 can handle?
The P6SMB8.2AT3 is rated for 50 A peak pulse current (IPP) under the standard 10/1000 µs double-exponential waveform, corresponding to its 600 W peak power rating. It also supports 100 A non-repetitive forward surge current (IFSM) for 8.3 ms half-sine pulses. These values are validated at TA = 25 °C; derating applies above 25 °C ambient per the published pulse derating curve in the datasheet.
Does P6SMB8.2AT3 meet automotive ESD requirements?
Yes, the P6SMB8.2AT3 meets IEC 61000-4-2 Level 4 ESD immunity (±8 kV contact, ±15 kV air) with an HBM rating exceeding 16 kV. Its <1 ns response time and low clamping voltage make it suitable for protecting CAN, LIN, and sensor interfaces in automotive body electronics. While not AEC-Q200 qualified itself, the P6SMB8.2AT3 is widely deployed in automotive modules where discrete TVS protection is specified alongside AEC-Q101 MOSFETs and Q200 passive components.
P6SMB8.2AT3 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 2015pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB8.2AT3 FAQ
1.How can I place an order for P6SMB8.2AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2AT3 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 P6SMB8.2AT3 reliable?
The price and inventory of P6SMB8.2AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB8.2AT3 is usually 5 days.
3.What payment methods are accepted for P6SMB8.2AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2AT3?
P6SMB8.2AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2AT3 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 P6SMB8.2AT3?
For technical support, including P6SMB8.2AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2AT3 requirements.
6.How does Aetrix verify that P6SMB8.2AT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2AT3 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 P6SMB8.2AT3 meets industry standards.
7.What is the process for return or replacement of P6SMB8.2AT3?
All P6SMB8.2AT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2AT3, 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 P6SMB8.2AT3 part is unused and in its original packaging.
Return procedure for P6SMB8.2AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB8.2AT3 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
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
