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Vishay General Semiconductor - Diodes Division P6SMB6.8AHE3_A/H
- Part No.:
- P6SMB6.8AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8AHE3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,647
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Product details
Overview
P6SMB6.8AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping transient overvoltages on power and signal lines. It features a 6.8 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage (VC) at 57.1 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 supplies.
For engineers reviewing the P6SMB6.8AHE3_A/H datasheet, P6SMB6.8AHE3_A/H pinout, P6SMB6.8AHE3_A/H application, or P6SMB6.8AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 100 °C/W junction-to-ambient thermal resistance, low 1000 µA reverse leakage at VWM, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by fast-rising transients, leveraging an avalanche breakdown mechanism. Its glass-passivated silicon junction ensures stable VBR tolerance (±5% min/max), low incremental surge resistance, and repeatable clamping performance under repetitive 0.01% duty-cycle pulses.
The device is rated for -65 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020, and supports lead-free soldering up to 260 °C peak. The cathode band marking identifies polarity, and its SMB package enables high-density board layout while maintaining 600 W surge capability without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 5.80 V - maximum continuous reverse working voltage before leakage exceeds 1000 µA |
| VC @ IPPM | 10.5 V at 57.1 A - clamped voltage during 600 W 10/1000 µs transient, limiting stress on downstream components |
| IPPM | 57.1 A - peak pulse current capability under standardized surge waveform |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform, enabling robust ESD and load-switching surge protection |
| TJ max | +150 °C - maximum junction temperature, supporting operation in under-hood automotive and industrial environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing (0.2" × 0.2") for thermal management |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated terminals, RoHS-compliant and AEC-Q101 qualified. Cathode identified by black band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side reference | Provides low-forward-voltage path during surge conduction; must be routed with minimal inductance to ground plane |
| Cathode | Current exit terminal in forward bias; connected to line being protected (e.g., 5 V rail, sensor output) | Defines unidirectional clamping direction - reverse-biased during normal operation, avalanches when VIN > VC |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring reliability under thermal cycling and vibration |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients from inductive load switching (e.g., solenoid drivers, relay coils) without degradation |
| Glass passivated junction | Ensures stable VBR over time and temperature, critical for long-term protection integrity in industrial equipment |
| MSL Level 1 moisture sensitivity | Enables direct use from reel without baking, reducing manufacturing overhead in high-volume SMT assembly |
| Low 1000 µA leakage at VWM | Minimizes standby power loss in battery-powered systems such as telematics modules and portable sensors |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V or 12 V power rails in engine control modules against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and local regulator input. Use Value: Limits voltage excursions to ≤10.5 V during 600 W surges, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Line-side transient suppressor mounted directly at connector interface before signal conditioning circuitry. Use Value: Clamps fast 8 kV HBM ESD events within nanoseconds while adding <1 pF capacitance, preserving signal fidelity. |
| Consumer USB Port Surge Protection | Telecom DC Power Input Protection |
|
Use Scenario: Shielding USB VBUS lines in docking stations and peripherals from hot-plug induced transients and nearby lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V supply path upstream of USB controller and port switch ICs. Use Value: Responds in <1 ns to limit VBUS spikes to safe levels, avoiding latch-up or permanent failure of USB PHY devices. |
Use Scenario: Guarding -48 V DC telecom power inputs against induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on positive rail side of split-supply systems. Use Value: Withstands repetitive 10/1000 µs surges up to 600 W, meeting GR-1089-CORE Level 3 telecom 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 |
|---|---|---|---|
| SMAJ6.8A-E3/52 | Same VBR (6.45–7.14 V), but SMA package (DO-214AC); lower PPPM (400 W); RθJA = 130 °C/W | Lower surge rating and higher thermal resistance limit use to lower-energy transients or less thermally constrained layouts | Select when footprint compatibility with SMA-based designs exists and 400 W surge margin suffices |
| 1.5SMC6.8A | Same VBR and PPPM (600 W), but SMC package (DO-214AB); larger footprint; RθJA = 75 °C/W | Improved thermal performance allows higher sustained surge repetition rates in high-temperature enclosures | Choose for industrial motor drives where ambient exceeds 85 °C and thermal derating is critical |
Compared with SMAJ6.8A-E3/52, P6SMB6.8AHE3_A/H delivers 50% higher surge energy handling and better thermal dissipation in a compact SMB form factor; versus 1.5SMC6.8A, it trades some thermal margin for space savings and AEC-Q101 qualification - making it optimal for automotive and space-constrained industrial designs.
Availability
P6SMB6.8AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB power delivery systems, and telecom DC input stages requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for P6SMB6.8AHE3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The P6SMB Series targets high-surge, surface-mount transient protection across automotive, industrial, and telecom applications - engineered for AEC-Q101 compliance, automated assembly, and consistent clamping performance under harsh thermal and electrical stress.
FAQ
What is the clamping voltage of P6SMB6.8AHE3_A/H at its rated peak pulse current?
The P6SMB6.8AHE3_A/H 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 double-exponential waveform. This value ensures downstream components like 5 V logic ICs or LDO regulators remain within safe operating limits during surge events. The P6SMB6.8AHE3_A/H maintains this clamping performance across its specified junction temperature range of -65 °C to +150 °C.
Is P6SMB6.8AHE3_A/H qualified for automotive applications?
Yes, P6SMB6.8AHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's official datasheet revision 09-Jan-2024. It is certified for use in automotive subsystems including body control modules, infotainment power supplies, and ADAS sensor interfaces. The P6SMB6.8AHE3_A/H undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge endurance per AEC-Q101 requirements.
What does the "_A/H" suffix in P6SMB6.8AHE3_A/H signify?
The "_A/H" suffix in P6SMB6.8AHE3_A/H denotes packaging configuration: "A" indicates the base P6SMB6.8A device type (unidirectional, 6.8 V nominal), and "H" specifies 7-inch plastic tape-and-reel delivery with 750 units per reel. The "HE3" portion confirms RoHS-compliant, AEC-Q101-qualified construction. This ordering code aligns with Vishay's standardized nomenclature for automotive-grade SMB-packaged TVS diodes.
How does the thermal resistance of P6SMB6.8AHE3_A/H affect PCB layout?
P6SMB6.8AHE3_A/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 maintain safe junction temperatures under repetitive surges, PCB layout must provide these minimum pad areas and avoid thermal isolation. Reducing pad size increases RθJA, risking premature thermal failure - so the P6SMB6.8AHE3_A/H requires strict adherence to Vishay's recommended land pattern.
Can P6SMB6.8AHE3_A/H replace bidirectional TVS diodes in circuit designs?
No, P6SMB6.8AHE3_A/H is strictly unidirectional and must not replace bidirectional TVS diodes (e.g., P6SMB6.8CA variants) in AC-coupled or dual-polarity signal paths. Its cathode band marks the protected line side, and forward conduction occurs only when the anode is more negative than the cathode. Using P6SMB6.8AHE3_A/H in place of a bidirectional device risks catastrophic failure during reverse-polarity transients - always verify polarity alignment before substituting the P6SMB6.8AHE3_A/H.
P6SMB6.8AHE3_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):
- 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_A/H FAQ
1.How can I place an order for P6SMB6.8AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8AHE3_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 P6SMB6.8AHE3_A/H reliable?
The price and inventory of P6SMB6.8AHE3_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 P6SMB6.8AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB6.8AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8AHE3_A/H?
P6SMB6.8AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8AHE3_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 P6SMB6.8AHE3_A/H?
For technical support, including P6SMB6.8AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB6.8AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8AHE3_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 P6SMB6.8AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB6.8AHE3_A/H?
All P6SMB6.8AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8AHE3_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 P6SMB6.8AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB6.8AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8AHE3_A/H Tags
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