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Vishay General Semiconductor - Diodes Division P6SMB8.2CAHM3_B/H
- Part No.:
- P6SMB8.2CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2CAHM3_B/H.pdf
- Description:
- 600W,8.2V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,599
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Product details
Overview
P6SMB8.2CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 8.2 V standoff voltage (VWM), 12.1 V maximum clamping voltage at 49.6 A peak pulse current, and 600 W peak pulse power capability with 10/1000 μs waveform - used to protect automotive-grade sensor interfaces and CAN bus receivers against ESD and load dump.
For engineers reviewing the P6SMB8.2CAHM3_B/H datasheet, P6SMB8.2CAHM3_B/H pinout, P6SMB8.2CAHM3_B/H application, or P6SMB8.2CAHM3_B/H equivalent, this part delivers AEC-Q101 qualified transient suppression for bidirectional signal paths where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are required in space-constrained PCB layouts.
Technical Context
The P6SMB8.2CAHM3_B/H operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown voltage range of 7.79 V to 8.61 V at 10 mA test current. Its glass-passivated junction ensures stable leakage performance and long-term reliability under repetitive surge conditions.
Thermal design is constrained by RθJA = 100 °C/W and TJ(max) = 150 °C, requiring minimum 5.0 mm × 5.0 mm copper pads per terminal for rated 600 W pulse handling. The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.02 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 7.79 V min / 8.61 V max at 10 mA - Ensures consistent avalanche initiation across production lots and temperature range. |
| VC (Clamping) | 12.1 V at 49.6 A IPPM - Limits downstream IC voltage stress during 10/1000 μs surge events. |
| PPPM | 600 W - Sustains high-energy transients common in automotive load-dump and inductive switching scenarios. |
| IPPM | 49.6 A - Peak surge current capability with defined 10/1000 μs waveform; validates protection level for IEC 61000-4-5 Level 3. |
| TJ Range | –65 °C to +150 °C - Supports operation in under-hood automotive environments and industrial control enclosures. |
| Package | SMB (DO-214AA) - Surface-mount footprint (4.57 mm × 3.94 mm) compatible with automated placement and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path for both polarities; no cathode marking required. |
| Cathode | Transient return path (bidirectional) | Electrically identical to anode in CA devices; terminals interchangeable in layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets IPC-1752A material declaration requirements and EU Directive 2011/65/EU. |
| 600 W peak pulse power | Handles IEC 61000-4-5 combination wave surges up to 4 kV without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices. |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Interface | CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog output pins of pressure/temperature sensors in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching ASIC input stage. Use Value: Maintains signal integrity by limiting voltage excursion to ≤12.1 V during 100 A surge events, preventing latch-up or gate oxide damage in downstream amplifiers. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD (IEC 61000-4-2 ±15 kV) and burst noise in vehicle body control modules. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF) bidirectional TVS placed across differential lines near transceiver IC. Use Value: Clamps common-mode transients without distorting 1 Mbps CAN signaling due to fast <1 ns response and minimal parasitic capacitance. |
| Industrial PLC I/O Module | Consumer Power Adapter Feedback Loop |
|
Use Scenario: Shielding 24 V DC digital input channels from inductive kickback when controlling solenoids or relays in factory automation systems. IC Role / Device Role / Timing Role: Primary transient suppressor mounted at terminal block entry, upstream of optocoupler isolation barrier. Use Value: Absorbs 600 W surge energy without failure, enabling >100,000 surge cycles per MIL-STD-883 Method 3015.7 qualification. |
Use Scenario: Securing TL431-based feedback network in AC/DC adapters against line-side surges and coupling noise from primary-side switching. IC Role / Device Role / Timing Role: Bidirectional clamp across reference voltage node to prevent false triggering or regulator latch-up. Use Value: Prevents output voltage runaway during 1.2/50 μs surges by clamping error amplifier input to ≤12.1 V while maintaining <1 μA leakage at 7.02 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0CA | Lower VWM (6.4 V), lower PPPM (400 W), SMA package (smaller thermal mass) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when board space is critical and surge energy stays below 400 W. |
| 1.5KE8.2CA | Higher PPPM (1500 W), axial lead DO-201 package, slower thermal response | Requires through-hole mounting; unsuitable for high-density SMT designs | Choose only for legacy through-hole boards needing higher single-pulse energy absorption. |
Compared with SMAJ8.0CA and 1.5KE8.2CA, the P6SMB8.2CAHM3_B/H uniquely balances AEC-Q101 qualification, 600 W pulse rating, and SMB footprint - making it the preferred choice for new automotive and industrial SMT designs requiring verified reliability and standardized reflow compatibility.
Availability
P6SMB8.2CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus hardening, and industrial I/O module designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB8.2CAHM3_B/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, MOSFETs, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for robustness under repetitive surge stress and extended temperature operation.
FAQ
What does the "CA" suffix indicate in P6SMB8.2CAHM3_B/H?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB8.2CAHM3_B/H provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB8.2A), it has no polarity marking and functions identically across either terminal orientation - essential for protecting differential or AC-coupled signal paths where polarity reversal may occur.
Is P6SMB8.2CAHM3_B/H qualified for automotive use?
Yes, P6SMB8.2CAHM3_B/H is AEC-Q101 qualified, as confirmed by the "HM3_B" suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability testing. It meets stress requirements for temperature cycling, humidity bias, and mechanical shock - validated for deployment in engine control units, ADAS camera modules, and body electronics where sustained operation at 150 °C junction temperature is required.
How does the clamping voltage of P6SMB8.2CAHM3_B/H compare to its breakdown voltage?
The P6SMB8.2CAHM3_B/H has a breakdown voltage range of 7.79 V to 8.61 V at 10 mA and a maximum clamping voltage of 12.1 V at 49.6 A. This yields a clamping ratio of approximately 1.49, reflecting efficient voltage limiting with minimal overvoltage margin - critical for safeguarding 5 V or 3.3 V logic interfaces without overstressing downstream ICs during surge events.
What is the thermal resistance of P6SMB8.2CAHM3_B/H, and how does it affect layout?
P6SMB8.2CAHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To sustain full 600 W pulse rating, PCB layout must allocate adequate copper area and avoid thermal bottlenecks - insufficient pad size increases junction temperature and reduces surge endurance, potentially causing parametric shift or catastrophic failure after repeated events.
Can P6SMB8.2CAHM3_B/H replace P6SMB8.2A in existing designs?
No, P6SMB8.2CAHM3_B/H cannot directly replace P6SMB8.2A because the former is bidirectional while the latter is unidirectional - they differ in polarity marking, circuit behavior under forward bias, and leakage characteristics. Substituting without schematic and layout review risks improper clamping, excessive forward conduction, or failure to suppress negative transients. Always verify signal path symmetry and bias conditions before interchanging CA and A variants.
P6SMB8.2CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB8.2CAHM3_B/H FAQ
1.How can I place an order for P6SMB8.2CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2CAHM3_B/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 P6SMB8.2CAHM3_B/H reliable?
The price and inventory of P6SMB8.2CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB8.2CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB8.2CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2CAHM3_B/H?
P6SMB8.2CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2CAHM3_B/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 P6SMB8.2CAHM3_B/H?
For technical support, including P6SMB8.2CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB8.2CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2CAHM3_B/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 P6SMB8.2CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB8.2CAHM3_B/H?
All P6SMB8.2CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2CAHM3_B/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 P6SMB8.2CAHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB8.2CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB8.2CAHM3_B/H Tags
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