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Vishay General Semiconductor - Diodes Division P6SMB6.8AHE3/5B
- Part No.:
- P6SMB6.8AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8AHE3/5B.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,320
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Product details
Overview
P6SMB6.8AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 5.8 V stand-off voltage (VWM), 10.5 V clamping voltage (VC) at 57.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and USB power input stages.
For engineers reviewing the P6SMB6.8AHE3/5B datasheet, P6SMB6.8AHE3/5B pinout, P6SMB6.8AHE3/5B application, or P6SMB6.8AHE3/5B equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, clamping performance under 57.1 A surge, and thermal resistance (RθJA = 100 °C/W) for board-level thermal design.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (5.8 V), it transitions from high-impedance blocking to low-impedance conduction at VBR (6.45–7.14 V), limiting transient energy via controlled avalanche breakdown. Its glass-passivated junction ensures stable leakage (<1000 µA at VWM) and fast response time (<1 ns).
The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine), supports 150 °C maximum junction temperature, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for automated SMT assembly in automotive-grade production environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 10.5 V at 57.1 A - clamped voltage during 600 W transient, determining protected circuit's maximum stress level |
| IPPM | 57.1 A - peak pulse current capability with 10/1000 µs waveform, defining surge handling capacity |
| PPPM | 600 W - peak pulse power rating, specifying energy absorption limit per transient event |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads, guiding PCB thermal layout |
| TJ max | +150 °C - maximum junction temperature, enabling operation in under-hood or industrial ambient conditions |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band marking; RoHS-compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected line ground or low-side reference; completes clamping loop during reverse surge |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., +5 V rail); conducts surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without derating on standard PCB pads |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, ADAS sensor interfaces, and infotainment power inputs |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, reducing stress on downstream MOSFETs or ICs |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and lifetime cycling |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 5 V CAN/LIN transceiver supply pins from load-dump and inductive switching transients in vehicle body control modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, clamping transients within 1 ns to prevent latch-up or damage to transceiver ICs. Use Value: Maintains system uptime by suppressing >400 V transients to ≤10.5 V, meeting ISO 7637-2 Pulse 1/2a/5a immunity requirements. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on input front-end, conducting only during overvoltage events while presenting <1 µA leakage at 24 V nominal. Use Value: Eliminates need for external series impedance or RC filtering, preserving signal edge integrity and enabling direct connection to microcontroller GPIO. |
| USB Type-C Power Delivery Input | DC-DC Converter Input Stage Protection |
|
Use Scenario: Clamping 5–20 V VBUS lines in USB PD sink applications against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of buck controller, sized to absorb 600 W pulses without thermal runaway. Use Value: Prevents catastrophic failure of synchronous rectifiers and gate drivers during 100 V/10 A surge events defined in USB PD 3.1 compliance testing. |
Use Scenario: Protecting 12 V input of isolated flyback converters in telecom power supplies from lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: First-line transient suppressor before input bulk capacitor, diverting surge current away from bridge rectifier and primary switch. Use Value: Reduces required MOV energy rating by >50%, lowering BOM cost and improving long-term reliability versus ceramic varistor-only solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-E3/5B | Same SMB package, identical VBR/VC, but rated for 400 W PPPM (vs. 600 W) and not AEC-Q101 qualified | Limited to commercial-grade consumer/industrial use; unsuitable for automotive under-hood deployment | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5SMC6.8A | Higher-power SMC package (1500 W PPPM), same VBR/VC, but 2.5× larger footprint and higher RθJA (60 °C/W) | Used where higher surge repetition rate or extended thermal dissipation is required, e.g., AC mains input stages | Choose only if PCB space allows SMC and system demands >600 W single-pulse capability |
Compared with SMAJ6.8A-E3/5B, P6SMB6.8AHE3/5B delivers 50 % higher surge power headroom and automotive qualification; versus 1.5SMC6.8A, it offers 60 % smaller footprint and better fit for space-constrained DC/DC or sensor modules - making it optimal for AEC-Q101-compliant, high-density board designs.
Availability
P6SMB6.8AHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and USB power delivery designs requiring stable component supply with full traceability and AEC-Q101 compliance.
Supply support for P6SMB6.8AHE3/5B 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P6SMB Series targets compact, high-power transient suppression in space-constrained automotive and industrial applications - engineered for AEC-Q101 qualification, automated SMT compatibility, and stable clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of P6SMB6.8AHE3/5B at its rated peak pulse current?
The P6SMB6.8AHE3/5B has a maximum clamping voltage (VC) of 10.5 V at its rated peak pulse current (IPPM) of 57.1 A, measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on the protected circuit during a 600 W transient event and is critical for ensuring downstream ICs remain within their absolute maximum ratings. The P6SMB6.8AHE3/5B maintains this clamping performance across its full operating temperature range.
Is P6SMB6.8AHE3/5B qualified for automotive applications?
Yes, P6SMB6.8AHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. This qualification validates its reliability for automotive use cases including engine control, ADAS sensors, and infotainment systems - covering temperature cycling, humidity bias, mechanical shock, and accelerated life testing. The P6SMB6.8AHE3/5B is specifically rated for operation from −65 °C to +150 °C junction temperature, supporting under-hood deployment.
What does the "5B" in P6SMB6.8AHE3/5B indicate?
The "5B" suffix in P6SMB6.8AHE3/5B specifies the packaging configuration: 13-inch diameter plastic tape and reel containing 3200 units. This differs from "52", which denotes a 7-inch reel with 750 units. Both share identical electrical and thermal specifications; the "5B" format is optimized for high-volume SMT production lines requiring longer uninterrupted placement runs. The P6SMB6.8AHE3/5B remains fully compatible with standard SMB pick-and-place tooling.
How does P6SMB6.8AHE3/5B compare to bidirectional TVS diodes like P6SMB6.8CAHE3/5B?
P6SMB6.8AHE3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., +5 V rail to GND), offering lower leakage (<1000 µA at 5.8 V) and tighter VBR tolerance. In contrast, P6SMB6.8CAHE3/5B is bidirectional and suited for AC or differential signal lines (e.g., RS-485), with symmetrical clamping in both directions but higher leakage (≤50 µA per direction). The P6SMB6.8AHE3/5B cannot replace bidirectional types in AC-coupled applications without circuit redesign.
What is the thermal resistance of P6SMB6.8AHE3/5B, and how does it affect PCB layout?
The P6SMB6.8AHE3/5B 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. This value assumes minimal copper area; increasing pad size or adding internal ground planes reduces RθJA and improves surge survivability. For repeated transients, thermal design must ensure peak junction temperature stays below 150 °C - requiring careful trace width and copper pour planning around the P6SMB6.8AHE3/5B footprint.
P6SMB6.8AHE3/5B 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB6.8AHE3/5B FAQ
1.How can I place an order for P6SMB6.8AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8AHE3/5B 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 P6SMB6.8AHE3/5B reliable?
The price and inventory of P6SMB6.8AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB6.8AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8AHE3/5B?
P6SMB6.8AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8AHE3/5B 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 P6SMB6.8AHE3/5B?
For technical support, including P6SMB6.8AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8AHE3/5B requirements.
6.How does Aetrix verify that P6SMB6.8AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8AHE3/5B 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 P6SMB6.8AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB6.8AHE3/5B?
All P6SMB6.8AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8AHE3/5B, 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 P6SMB6.8AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB6.8AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8AHE3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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