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Vishay General Semiconductor - Diodes Division P6SMB8.2CAHM3/H
- Part No.:
- P6SMB8.2CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB8.2CAHM3/H.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,988
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Product details
Overview
P6SMB8.2CAHM3/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 (VC) at 49.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB8.2CAHM3/H datasheet, P6SMB8.2CAHM3/H pinout, P6SMB8.2CAHM3/H application, or P6SMB8.2CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and thermal resistance (RθJA = 100 °C/W) under PCB pad-limited conduction.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics, while low incremental surge resistance enables rapid energy diversion during ESD or inductive switching events.
The P6SMB8.2CAHM3/H delivers repeatable transient suppression under 0.01% duty cycle conditions, with clamping performance validated at 25 °C ambient and derated above TA = 25 °C per Fig. 2. Its MSL Level 1 rating (J-STD-020) and 260 °C lead-free reflow compatibility support high-volume automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.02 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 7.79–8.61 V at 10 mA - Verified avalanche onset range ensuring predictable turn-on during overvoltage events |
| VC (Clamping) | 12.1 V at 49.6 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM | 600 W - Sustained transient energy absorption capacity without failure under standardized waveform |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; dictates derating above 25 °C |
| TJ max. | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals solderable per J-STD-002. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Electrically symmetric terminal; connects to either side of protected line without polarity constraint |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically symmetric terminal; completes bidirectional clamping path across protected node |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 24 V industrial buses with margin |
| AEC-Q101 qualified (HM3) | Validated for automotive powertrain and body electronics where long-term field reliability is mandatory |
| MSL Level 1, 260 °C | Supports standard lead-free reflow profiles without preconditioning or baking requirements |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments |
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 voltage clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤12.1 V during 49.6 A surges, preventing latch-up or gate oxide damage in downstream ASICs. |
Use Scenario: Safeguarding 24 V DC digital input modules against inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy between supply rail and return, referenced to local ground plane. Use Value: Clamps 600 W surges within 1 ns response time, maintaining PLC uptime and reducing false-trip incidents. |
| Consumer Power Adapter ESD | Telecom Line Interface |
Use Scenario: Secondary-side transient suppression on USB-C PD adapter output rails exposed to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp shunting fast transients (<1 ns rise time) before DC-DC controller inputs. Use Value: Withstands ±15 kV contact discharge (IEC 61000-4-2) while adding <0.5 pF parasitic capacitance to maintain signal integrity. |
Use Scenario: Overvoltage protection on Ethernet PHY magnetics secondary windings and RS-485 transceiver lines. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across differential pairs to suppress lightning-induced common-mode surges. Use Value: Maintains 7.02 V working voltage margin below data line thresholds while clamping to 12.1 V during 10/1000 μs threats. |
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 PPPM (400 W), higher VWM (6.4 V), same SMB package but non-AEC-Q101 rated | Suitable for commercial-grade consumer electronics; lacks automotive qualification and thermal margin | Select when cost sensitivity outweighs automotive reliability requirements and surge energy stays below 400 W |
| SMCJ8.0CA | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM (6.4 V), AEC-Q101 available (HM3 variant) | Used where higher surge energy handling is required, but requires PCB layout change due to larger footprint | Choose when system-level surge testing exceeds 600 W or when longer transient duration demands lower clamping impedance |
Compared with SMAJ8.0CA and SMCJ8.0CA, the P6SMB8.2CAHM3/H uniquely balances AEC-Q101 qualification, 600 W surge capacity, and SMB footprint - making it optimal for space-constrained automotive modules needing certified reliability without board redesign.
Availability
P6SMB8.2CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P6SMB8.2CAHM3/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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications infrastructure - engineered for robust clamping, automated assembly, and long-term stability under thermal and electrical stress.
FAQ
What does the "CA" suffix indicate in P6SMB8.2CAHM3/H?
The "CA" suffix in P6SMB8.2CAHM3/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. This eliminates the need for polarity-aware placement and makes it ideal for protecting AC-coupled signals, differential buses like CAN or RS-485, and floating sensor outputs where voltage reversals may occur. The P6SMB8.2CAHM3/H achieves this via a back-to-back diode structure inside the SMB package.
How does the HM3 suffix affect the P6SMB8.2CAHM3/H specification?
The HM3 suffix in P6SMB8.2CAHM3/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Unlike base M3 variants, HM3 parts undergo extended stress testing including temperature cycling, high-temperature reverse bias, and ESD verification - confirming suitability for automotive powertrain and chassis applications. This suffix also guarantees compliance with JESD201 Class 2 whisker resistance and MSL Level 1 reflow capability up to 260 °C.
What is the maximum clamping voltage of P6SMB8.2CAHM3/H under surge conditions?
The P6SMB8.2CAHM3/H has a maximum clamping voltage (VC) of 12.1 V at 49.6 A peak pulse current (IPPM), measured using the standardized 10/1000 μs double-exponential waveform. This value represents the highest voltage imposed on the protected circuit during worst-case transient events and is guaranteed across the full operating temperature range (−65 °C to +150 °C), enabling robust design margin for 5 V and 12 V logic interfaces.
Can P6SMB8.2CAHM3/H replace unidirectional TVS diodes in existing designs?
The P6SMB8.2CAHM3/H can replace unidirectional TVS diodes only if the circuit topology supports bidirectional clamping and the protected node is not referenced to a fixed polarity rail. Since P6SMB8.2CAHM3/H has no polarity marking and identical forward/reverse characteristics, it simplifies layout but may increase leakage in DC-biased applications. Verify that reverse leakage (ID ≤ 200 μA at 7.02 V) remains acceptable in your specific bias condition before substitution.
What PCB pad layout is recommended for optimal thermal performance of P6SMB8.2CAHM3/H?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for P6SMB8.2CAHM3/H to achieve the published RθJA of 100 °C/W. Use internal thermal vias beneath each pad to connect to inner-layer ground or power planes, and avoid narrow traces that restrict heat flow. This layout ensures reliable operation at full 5.0 W steady-state dissipation and maintains clamping consistency during repetitive surges.
P6SMB8.2CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for P6SMB8.2CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB8.2CAHM3/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/H reliable?
The price and inventory of P6SMB8.2CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for P6SMB8.2CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB8.2CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB8.2CAHM3/H?
P6SMB8.2CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB8.2CAHM3/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/H?
For technical support, including P6SMB8.2CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB8.2CAHM3/H requirements.
6.How does Aetrix verify that P6SMB8.2CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB8.2CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of P6SMB8.2CAHM3/H?
All P6SMB8.2CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB8.2CAHM3/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/H part is unused and in its original packaging.
Return procedure for P6SMB8.2CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB8.2CAHM3/H Tags
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