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Vishay General Semiconductor - Diodes Division P6SMB8.2CAHM3_B/I
- Part No.:
- P6SMB8.2CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2CAHM3_B/I.pdf
- Description:
- 600W,8.2V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,666
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Product details
Overview
P6SMB8.2CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 8.2 V breakdown voltage (VBR = 7.79–8.61 V at 10 mA), 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 electronics.
For engineers reviewing the P6SMB8.2CAHM3_B/I datasheet, P6SMB8.2CAHM3_B/I pinout, P6SMB8.2CAHM3_B/I application, or P6SMB8.2CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3_B suffix), SMB (DO-214AA) package compatibility, and verified 12.1 V clamping performance under 49.6 A surge conditions.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<200 μA at 7.02 V), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C.
The P6SMB8.2CAHM3_B/I delivers 600 W peak pulse power handling per 10/1000 μs waveform, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling robust transient suppression in compact PCB layouts with minimal copper pad area (0.2" × 0.2").
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at 10 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 7.02 V - maximum continuous reverse stand-off voltage before leakage exceeds 200 μA |
| VC @ IPPM | 12.1 V at 49.6 A - clamped voltage during worst-case 600 W transient, limiting downstream stress |
| PPPM | 600 W - peak pulse power rating per 10/1000 μs waveform, validated for repetitive 0.01% duty cycle |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides low-impedance path to ground or rail during positive or negative surges |
| Cathode | Transient return path (bidirectional) | Functions identically to anode; no functional distinction in CA-type devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands high-energy transients from inductive switching (e.g., solenoid drivers, motor controllers) |
| AEC-Q101 qualified (HM3_B) | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1, 260 °C reflow | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes voltage overshoot during clamping, reducing risk of downstream IC latch-up or damage |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching interface ICs. Use Value: Limits induced voltage to ≤12.1 V during 49.6 A surges, preserving signal integrity and preventing damage to 5 V or 3.3 V logic interfaces. |
Use Scenario: Safeguarding digital input/output channels in programmable logic controllers exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal traces, operating in parallel with optocoupler isolation barriers. Use Value: Absorbs 600 W transient energy within microseconds, maintaining channel availability and avoiding system resets during factory floor disturbances. |
| Consumer Power Adapter Surge Suppression | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side transient suppression in AC/DC adapters and USB-C PD chargers subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage clamping device across DC output rails (e.g., 5 V, 9 V, 12 V) before connected devices. Use Value: Clamps output voltage to 12.1 V during 10/1000 μs surges, preventing overvoltage shutdown or damage to downstream USB controllers and PMICs. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Common-mode TVS pair (two devices) across differential pairs to suppress longitudinal transients without distorting signal integrity. Use Value: Maintains <12.1 V common-mode excursion during 49.6 A surges, ensuring compliance with ITU-T K.20/21 immunity requirements. |
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 VBR (7.6–8.4 V), same SMB package, 400 W PPPM | Less robust for high-energy transients; suitable only where 400 W margin suffices | Select when cost sensitivity outweighs need for full 600 W rating and AEC-Q101 qualification |
| 1.5SMC8.2CA | Same VBR/VC, higher PPPM (1500 W), larger SMC (DO-214AB) package | Requires larger PCB area and different thermal layout; not drop-in compatible | Choose when system-level surge tests exceed 600 W and board space allows SMC footprint |
Compared with SMAJ8.0CA and 1.5SMC8.2CA, the P6SMB8.2CAHM3_B/I uniquely balances AEC-Q101 qualification, 600 W capability, and SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring production-grade reliability without package redesign.
Availability
P6SMB8.2CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer power adapter designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant transient protection.
Supply support for P6SMB8.2CAHM3_B/I 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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 validation, and surface-mount scalability across 6.8 V to 440 V standoff voltages.
FAQ
What does the "CA" suffix indicate in P6SMB8.2CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB8.2CAHM3_B/I provides symmetrical transient suppression for both positive and negative voltage excursions, with no cathode band marking required. This differs from unidirectional "A" variants that require correct polarity placement and feature a visible cathode band. The CA version is ideal for AC-coupled or floating signal paths where polarity reversal is possible.
Is P6SMB8.2CAHM3_B/I suitable for automotive applications?
Yes, P6SMB8.2CAHM3_B/I is AEC-Q101 qualified (indicated by the HM3_B suffix), having passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD. It is rated for operation from –65 °C to +150 °C and meets MSL Level 1 for lead-free reflow, making it appropriate for under-hood ECUs, body control modules, and ADAS sensor interfaces where transient immunity is critical.
What is the maximum clamping voltage of P6SMB8.2CAHM3_B/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB8.2CAHM3_B/I is 12.1 V, measured at its peak pulse current (IPPM) of 49.6 A using the standard 10/1000 μs waveform. This value represents the highest voltage seen across the device during worst-case transient events, ensuring downstream components like 5 V microcontrollers or 3.3 V sensors remain within safe operating limits.
How does the SMB (DO-214AA) package of P6SMB8.2CAHM3_B/I compare to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB8.2CAHM3_B/I measures 3.94 mm × 2.20 mm × 1.75 mm - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). It offers a 600 W rating in a compact footprint optimized for automated placement, whereas SMA typically supports only 400 W and SMC accommodates up to 1500 W. Thermal resistance is 100 °C/W (junction-to-ambient), requiring minimum 0.2" × 0.2" copper pads per terminal for full rating.
What is the significance of the "_B/I" suffix in P6SMB8.2CAHM3_B/I?
The "_B/I" suffix in P6SMB8.2CAHM3_B/I indicates two attributes: "_B" specifies AEC-Q101 qualification for the 6.8 V to 220 V P6SMB range, and "_I" denotes packaging in 13-inch plastic tape-and-reel format with 3200 units per reel. This distinguishes it from "_H" (7-inch reel, 750 units) and confirms compliance with automotive reliability standards while supporting high-volume SMT assembly.
P6SMB8.2CAHM3_B/I 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:
- 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/I FAQ
1.How can I place an order for P6SMB8.2CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2CAHM3_B/I 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/I reliable?
The price and inventory of P6SMB8.2CAHM3_B/I 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/I is usually 5 days.
3.What payment methods are accepted for P6SMB8.2CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2CAHM3_B/I?
P6SMB8.2CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2CAHM3_B/I 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/I?
For technical support, including P6SMB8.2CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB8.2CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2CAHM3_B/I 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/I meets industry standards.
7.What is the process for return or replacement of P6SMB8.2CAHM3_B/I?
All P6SMB8.2CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2CAHM3_B/I, 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/I part is unused and in its original packaging.
Return procedure for P6SMB8.2CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB8.2CAHM3_B/I Tags
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