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Vishay General Semiconductor - Diodes Division P6SMB6.8AHM3_B/H
- Part No.:
- P6SMB6.8AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8AHM3_B/H.pdf
- Description:
- 600W,6.8V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,250
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Product details
Overview
P6SMB6.8AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 6.45 V minimum breakdown voltage (VBR), 5.8 V maximum stand-off voltage (VWM), 10.5 V clamping voltage (VC) at 57.1 A peak pulse current, 600 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the P6SMB6.8AHM3_B/H datasheet, P6SMB6.8AHM3_B/H pinout, P6SMB6.8AHM3_B/H application, or P6SMB6.8AHM3_B/H equivalent, this part serves as a halogen-free, RoHS-compliant, automotive-grade TVS for protecting MOSFETs, ICs, and sensor signal lines against inductive switching surges and ESD events in harsh environments.
Technical Context
The P6SMB6.8AHM3_B/H operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response to transient overvoltages. Its 10.5 V clamping voltage at 57.1 A ensures robust protection of downstream 5 V or 3.3 V logic circuits without overstressing components.
It delivers 600 W peak pulse power handling per 10/1000 µs waveform at 0.01% duty cycle, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. The device is rated for -65 °C to +150 °C operating junction temperature and meets MSL Level 1 reflow requirements (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 6.45 V - Ensures reliable avalanche conduction onset above normal 5.8 V system operating voltage |
| VWM | 5.8 V - Maximum continuous reverse voltage before leakage exceeds 1000 µA; compatible with 5 V rail protection |
| VC @ IPPM | 10.5 V - Clamped voltage during 57.1 A transient; keeps protected IC inputs below absolute maximum ratings |
| PPPM | 600 W - Sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure |
| IPPM | 57.1 A - Peak surge current capability under standard 10/1000 µs waveform; validated with derating above 25 °C |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - Low-profile, surface-mount package with matte tin-plated leads; compatible with automated placement |
Pinout & Package
Package: SMB (DO-214AA), molded case with UL 94 V-0 flammability rating; cathode indicated by band on body; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference | Provides low-impedance path to ground during transient clamping; must be routed with minimal inductance |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., VIN, signal) | Acts as the "high-side" connection point; clamps voltage relative to anode reference; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains and industrial end-equipment |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy load-dump and inductive kickback events without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time) |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture-related reliability risk |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 5 V power rails in automotive body control modules from ISO 7637-2 load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between VBAT-derived 5 V rail and chassis ground. Use Value: Limits transient voltage to ≤10.5 V, preventing latch-up or damage to microcontrollers and CAN transceivers powered from the same rail. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor on sensor output trace, referenced to system ground. Use Value: Clamps ESD (IEC 61000-4-2) and cable discharge events to safe levels while maintaining signal integrity due to low capacitance and fast response. |
| Consumer Power Adapter Input Protection | Telecom DC Power Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home devices subjected to lightning-induced surges on mains-derived DC outputs. IC Role / Device Role / Timing Role: Standoff-rated TVS across regulated 5 V/12 V output, shunting excess energy to ground. Use Value: Prevents catastrophic failure of downstream USB-PD controllers or charging ICs during sustained overvoltage conditions up to 600 W peak. |
Use Scenario: DC input protection (e.g., -48 V telecom supply) in remote radio units exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to negative rail, absorbing positive-going transients on the -48 V feed. Use Value: Maintains system uptime by limiting transient excursions to <11 V above nominal rail, avoiding brownout or reset of baseband processors. |
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) and VC (10.5 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 Pulse 5a | Select when board space is constrained and surge energy is limited to <400 W (e.g., consumer USB ports) |
| 1.5SMC6.8A | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass, RθJA = 60 °C/W; not AEC-Q101 qualified | Requires more PCB area; lacks automotive qualification; better for industrial power supplies with airflow | Choose for non-automotive applications needing higher thermal margin and legacy SMC footprint compatibility |
Compared with SMAJ6.8A-E3/52 and 1.5SMC6.8A, the P6SMB6.8AHM3_B/H uniquely combines AEC-Q101 qualification, 600 W surge capability, and SMB footprint-enabling automotive-grade protection without layout redesign or thermal derating penalties.
Availability
P6SMB6.8AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and telecom power systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB6.8AHM3_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, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and application-specific performance.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping behavior and AEC-Q101 validation across voltage grades.
FAQ
What is the maximum clamping voltage of the P6SMB6.8AHM3_B/H under peak pulse conditions?
The P6SMB6.8AHM3_B/H has a maximum clamping voltage (VC) of 10.5 V at 57.1 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C and is guaranteed per the Vishay datasheet revision 09-Jan-2024. The P6SMB6.8AHM3_B/H maintains this clamping performance across its specified operating temperature range when properly mounted on recommended copper pads.
Is the P6SMB6.8AHM3_B/H suitable for automotive applications?
Yes, the P6SMB6.8AHM3_B/H is AEC-Q101 qualified and explicitly designated for automotive use, as confirmed by its HM3 suffix and _B/H ordering code. It meets stringent reliability requirements for under-hood and cabin electronics, including thermal cycling, humidity resistance, and surge endurance. The P6SMB6.8AHM3_B/H is commonly deployed in body control modules, infotainment power supplies, and ADAS sensor interfaces.
What does the "HM3" suffix indicate in P6SMB6.8AHM3_B/H?
The "HM3" suffix in P6SMB6.8AHM3_B/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes the part from commercial-grade variants (e.g., E3 or M3) and confirms compliance with automotive environmental and reliability standards. The "_B/H" further specifies AEC-Q101 qualification and 7″ tape-and-reel packaging (H = 7″ reel, B = revision level).
How does the P6SMB6.8AHM3_B/H differ from bidirectional TVS diodes like P6SMB6.8CA?
The P6SMB6.8AHM3_B/H is unidirectional and intended for DC line protection where polarity is fixed (e.g., 5 V rail to ground), offering lower leakage and sharper knee characteristics. In contrast, P6SMB6.8CA is bidirectional and suited for AC or floating signal lines. The P6SMB6.8AHM3_B/H's cathode band marking enables correct orientation during assembly-critical for proper clamping function.
What is the thermal resistance of the P6SMB6.8AHM3_B/H, and how does it affect PCB layout?
The P6SMB6.8AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain reliability under repeated surges, the datasheet recommends mounting on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size or omitting thermal vias increases junction temperature, potentially derating the P6SMB6.8AHM3_B/H's surge capability.
P6SMB6.8AHM3_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:
- 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:
- 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)
P6SMB6.8AHM3_B/H FAQ
1.How can I place an order for P6SMB6.8AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8AHM3_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 P6SMB6.8AHM3_B/H reliable?
The price and inventory of P6SMB6.8AHM3_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 P6SMB6.8AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB6.8AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8AHM3_B/H?
P6SMB6.8AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8AHM3_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 P6SMB6.8AHM3_B/H?
For technical support, including P6SMB6.8AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB6.8AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8AHM3_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 P6SMB6.8AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB6.8AHM3_B/H?
All P6SMB6.8AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8AHM3_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 P6SMB6.8AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB6.8AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8AHM3_B/H Tags
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