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Vishay General Semiconductor - Diodes Division P6SMB8.2AHM3_A/H
- Part No.:
- P6SMB8.2AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2AHM3_A/H.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,647
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Product details
Overview
P6SMB8.2AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 7.79 V minimum breakdown voltage (VBR), 7.02 V standoff voltage (VWM), 12.1 V maximum clamping voltage (VC) at 49.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the P6SMB8.2AHM3_A/H datasheet, P6SMB8.2AHM3_A/H pinout, P6SMB8.2AHM3_A/H application, or P6SMB8.2AHM3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status (HM3 suffix), 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device triggered by reverse-biased avalanche breakdown above its VWM of 7.02 V, limiting transient overvoltages to ≤12.1 V at 49.6 A. Its glass-passivated junction ensures stable leakage (<200 μA at VWM) and fast response time (<1 ns), critical for protecting sensitive CMOS inputs and microcontroller I/O lines.
The P6SMB8.2AHM3_A/H is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications. Its thermal resistance (RθJA = 100 °C/W) and 5.0 W steady-state power dissipation support operation up to +150 °C junction temperature when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 7.02 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Min/Max) | 7.79 V / 8.61 V at 10 mA - Confirmed avalanche onset range; ensures predictable triggering across production lot. |
| VC @ IPPM | 12.1 V at 49.6 A - Clamped voltage during 600 W transient; must be below protected device's absolute maximum rating. |
| IPPM | 49.6 A - Peak pulse current capability with 10/1000 μs waveform; determines survivability against ISO 7637-2 Pulse 1/2a/5a events. |
| Power Rating | 600 W - Peak pulse power handling; validated under repetitive 0.01% duty cycle per JEDEC standards. |
| Junction Temp | -65 °C to +150 °C - Enables use in under-hood automotive environments and industrial control cabinets without derating. |
| Leakage @ VWM | ≤200 μA - Low reverse leakage preserves battery life in always-on circuits and avoids false triggering. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated terminals, MSL Level 1 (260 °C reflow peak), 0.106 g unit weight. Cathode indicated by banded end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); enables unidirectional clamping from cathode to anode. |
| Cathode | Avalanche clamping terminal | Banded end; connected to protected line (e.g., 5 V rail or CAN_H); conducts transient energy to anode during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for ADAS and body control modules. |
| 600 W peak pulse power | Withstands high-energy transients such as load dump (ISO 16750-2) and inductive switching spikes without degradation. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage drift over temperature and lifetime - critical for safety-critical systems. |
| Low profile SMB package | 0.160" × 0.130" footprint enables dense PCB layouts while maintaining thermal performance via 0.2" × 0.2" copper pads. |
| Halogen-free & RoHS | Complies with automotive environmental requirements (e.g., ELV Directive) and supports lead-free reflow assembly. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V and 12 V power domains in engine control units (ECUs) and infotainment systems from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between supply rail and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits transient voltage to ≤12.1 V, preventing latch-up or gate oxide damage in downstream MCU and PMIC components. |
Use Scenario: Shielding analog and digital signal lines (e.g., LIN, CAN sub-nodes, temperature sensors) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Standby protection device with <200 μA leakage, activated only during transients - no impact on normal signal integrity. Use Value: Maintains signal fidelity during operation while suppressing ±8 kV contact ESD (IEC 61000-4-2) without loading the bus. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Protection |
|
Use Scenario: Safeguarding AC/DC adapter secondary-side outputs against surges induced by mains switching or lightning-induced coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on regulated 5 V/9 V/12 V output rails feeding USB ports or display controllers. Use Value: Absorbs 600 W pulses without failure, enabling compliance with UL 62368-1 transient immunity requirements. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras, wireless APs) from voltage transients on 48 V DC feed lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed at PD input, referenced to local ground, clamping surges before DC-DC converter input stage. Use Value: Ensures uninterrupted operation during IEEE 802.3bt-compliant surge tests by limiting clamping voltage below converter OVP threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Lower VWM (6.8 V), higher VC (13.6 V), same SMB package and 600 W rating. | Less margin between VWM and typical 8 V nominal rails; may trigger falsely during brownout conditions. | Select when tighter VWM/VBR tolerance is required and system tolerates higher clamping voltage. |
| 1.5SMC8.2A | Same VWM/VBR specs but in larger SMC (DO-214AB) package; RθJA = 60 °C/W vs. 100 °C/W. | Higher thermal mass allows higher sustained power but occupies ~2.5× PCB area; not drop-in compatible. | Choose for high-reliability industrial designs where board space permits and thermal derating is critical. |
Compared with SMAJ8.0A and 1.5SMC8.2A, the P6SMB8.2AHM3_A/H offers optimal balance of automotive qualification, compact SMB footprint, and precise 7.02 V standoff - making it preferred for space-constrained, AEC-Q101–mandated applications where clamping accuracy and manufacturability are prioritized.
Availability
P6SMB8.2AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and telecom PoE endpoints requiring stable component supply with full traceability and AEC-Q101 compliance.
Supply support for P6SMB8.2AHM3_A/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The P6SMB Series targets robust transient suppression in harsh environments, with design focus on AEC-Q101 qualification, low-profile SMT packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the polarity configuration of the P6SMB8.2AHM3_A/H?
The P6SMB8.2AHM3_A/H is a unidirectional TVS diode, with the banded end marking the cathode terminal. This configuration allows clamping only during reverse-voltage transients on the cathode side, making it ideal for DC power rail protection where polarity is fixed. The P6SMB8.2AHM3_A/H does not conduct in forward bias beyond typical diode drop and is not rated for bidirectional operation.
Is the P6SMB8.2AHM3_A/H qualified for automotive applications?
Yes, the P6SMB8.2AHM3_A/H carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114, validating its use in automotive subsystems such as body electronics, ADAS sensors, and infotainment power supplies.
What is the maximum clamping voltage of the P6SMB8.2AHM3_A/H under standard test conditions?
The P6SMB8.2AHM3_A/H has a maximum clamping voltage (VC) of 12.1 V when subjected to its rated peak pulse current of 49.6 A using the 10/1000 μs waveform. This value is measured at TA = 25 °C on specified 0.2" × 0.2" copper pads and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
How does the P6SMB8.2AHM3_A/H compare to bidirectional TVS diodes like P6SMB8.2CA?
The P6SMB8.2AHM3_A/H differs fundamentally from bidirectional variants (e.g., P6SMB8.2CA) by supporting clamping in one direction only - reverse bias on the cathode. Bidirectional types suppress transients on both polarities but exhibit higher leakage and lack AEC-Q101 qualification in standard versions. The P6SMB8.2AHM3_A/H is selected when polarity is known and automotive reliability is mandatory.
What PCB layout guidance applies to the P6SMB8.2AHM3_A/H for optimal thermal and electrical performance?
For optimal performance, mount the P6SMB8.2AHM3_A/H on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's recommended layout. Avoid narrow traces between the TVS and protected node; keep path inductance minimal to preserve clamping speed. Ensure adequate clearance to adjacent components to prevent arcing during high-energy transients, especially in 12 V/24 V automotive systems.
P6SMB8.2AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- 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):
- 49.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB8.2AHM3_A/H FAQ
1.How can I place an order for P6SMB8.2AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2AHM3_A/H 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 P6SMB8.2AHM3_A/H reliable?
The price and inventory of P6SMB8.2AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB8.2AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB8.2AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2AHM3_A/H?
P6SMB8.2AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2AHM3_A/H 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 P6SMB8.2AHM3_A/H?
For technical support, including P6SMB8.2AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB8.2AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2AHM3_A/H 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 P6SMB8.2AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB8.2AHM3_A/H?
All P6SMB8.2AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2AHM3_A/H, 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 P6SMB8.2AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB8.2AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB8.2AHM3_A/H Tags
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