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Vishay General Semiconductor - Diodes Division P6SMB6.8CAHM3_B/H
- Part No.:
- P6SMB6.8CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8CAHM3_B/H.pdf
- Description:
- 600W,6.8V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,180
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Product details
Overview
P6SMB6.8CAHM3_B/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 6.8 V breakdown voltage (VBR min = 6.45 V), 5.8 V stand-off voltage (VWM), 1000 µA max reverse leakage at VWM, 600 W peak pulse power (10/1000 µs), and clamps to ≤10.5 V at 57.1 A peak pulse current - used for protecting MOSFET gates, sensor interfaces, and automotive ECUs against ESD and inductive switching surges.
For engineers reviewing the P6SMB6.8CAHM3_B/H datasheet, P6SMB6.8CAHM3_B/H pinout, P6SMB6.8CAHM3_B/H application, or P6SMB6.8CAHM3_B/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMB package mechanical data, bidirectional clamping behavior, and direct alternative part comparisons for automotive-grade transient protection design-in.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping voltage excursions above +6.8 V or below −6.8 V with matched forward/reverse characteristics. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, while MSL Level 1 rating supports lead-free reflow up to 260 °C.
Designed for repetitive transient suppression, it handles 10/1000 µs waveforms at 0.01% duty cycle, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - validated for automotive under-hood and body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise clamping onset threshold in both directions |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 1000 µA |
| IPPM | 57.1 A (10/1000 µs) - peak surge current it safely diverts without failure |
| VC @ IPPM | ≤10.5 V - maximum clamped voltage seen by protected circuit during full-rated surge |
| PPPM | 600 W - peak transient power dissipation capability under standardized waveform |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either end functions identically as input/output for transient energy diversion - no directional mounting required |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surges in automotive ECUs |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive use including temperature cycling, HTRB, and surge lifetime testing |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity handling |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage across temperature and life |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental compliance requirements including ELV and IMDS reporting |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting LIN bus transceivers and relay driver outputs from load dump and inductive kickback in door modules and lighting controls. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across LIN line-to-ground and VCC-to-ground paths. Use Value: Limits transient voltage to ≤10.5 V, preventing damage to 5 V tolerant transceivers and ensuring >100,000-cycle reliability per AEC-Q101. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF), fast-response TVS shunting ESD and field-wiring surges to ground. Use Value: Maintains signal integrity with <1000 µA leakage at 5.8 V, avoiding offset errors in precision analog front-ends. |
| Automotive Infotainment Power Rail | Consumer USB Port Protection |
Use Scenario: Clamping 12 V supply rail transients induced by alternator load dump or battery jump-start events in head unit power supplies. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 12 V input, upstream of DC/DC converters. Use Value: Withstands 600 W surges and operates up to +150 °C ambient, meeting OEM thermal derating requirements. |
Use Scenario: ESD protection on USB 2.0 D+/D− lines and VBUS in portable docking stations and smart hubs. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed between connector and PHY IC. Use Value: Symmetric clamping ensures equal protection for both data line polarities and 5 V VBUS, compliant with IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Same 6.8 V VBR, but 400 W PPPM and SMA package (higher RθJA = 150 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump | Select when cost or board space is prioritized over AEC-Q101 qualification and 600 W surge margin |
| 1.5SMC6.8CA | Same VBR and PPPM, but larger SMC (DO-214AB) package with higher IFSM (200 A) | Better thermal mass for high-repetition surges; requires larger PCB footprint | Choose when system-level surge repetition rate exceeds 0.01% duty cycle or layout allows SMC size |
Compared with SMAJ6.8CA and 1.5SMC6.8CA, P6SMB6.8CAHM3_B/H uniquely balances AEC-Q101 qualification, SMB footprint, and full 600 W capability - making it the preferred choice for space-constrained automotive and industrial designs requiring production-grade reliability.
Availability
P6SMB6.8CAHM3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, infotainment power rails, and consumer USB protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB6.8CAHM3_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 high-volume manufacturability.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for consistent clamping performance, AEC-Q101 compliance, and compatibility with automated SMT assembly.
FAQ
What does the "CA" suffix mean in P6SMB6.8CAHM3_B/H?
The "CA" suffix denotes a bidirectional configuration: the device clamps symmetrically for both positive and negative voltage transients, with identical breakdown and clamping characteristics in either direction. This eliminates polarity concerns during PCB layout and makes P6SMB6.8CAHM3_B/H ideal for AC-coupled lines, differential buses, and ungrounded signal paths where voltage excursions can occur in either polarity.
Is P6SMB6.8CAHM3_B/H qualified for automotive applications?
Yes - the "HM3" suffix confirms P6SMB6.8CAHM3_B/H is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and surge lifetime validation per automotive reliability standards, making it suitable for under-hood and body electronics in production vehicles.
What is the maximum clamping voltage of P6SMB6.8CAHM3_B/H at rated surge current?
The maximum clamping voltage (VC) of P6SMB6.8CAHM3_B/H is 10.5 V at its rated peak pulse current of 57.1 A (10/1000 µs waveform). This value is guaranteed across temperature and production lot, ensuring downstream ICs see no more than 10.5 V during full-rated transient events - critical for protecting 5 V or 3.3 V logic interfaces.
How does the SMB package of P6SMB6.8CAHM3_B/H compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB6.8CAHM3_B/H offers a 30% smaller footprint than SMC and 20% smaller than SMA, while maintaining 600 W surge capability. Its RθJA of 100 °C/W enables higher power density than SMAJ-series parts, and its MSL Level 1 rating supports standard reflow without baking - unlike many SMC variants requiring moisture preconditioning.
What is the reverse leakage current specification for P6SMB6.8CAHM3_B/H at its stand-off voltage?
P6SMB6.8CAHM3_B/H specifies a maximum reverse leakage current (ID) of 1000 µA at its stand-off voltage (VWM) of 5.8 V, measured at 25 °C. This low leakage ensures minimal impact on high-impedance sensor circuits and battery-powered systems, preserving accuracy and extending operational life without introducing parasitic loading.
P6SMB6.8CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB6.8CAHM3_B/H FAQ
1.How can I place an order for P6SMB6.8CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8CAHM3_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 P6SMB6.8CAHM3_B/H reliable?
The price and inventory of P6SMB6.8CAHM3_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 P6SMB6.8CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB6.8CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8CAHM3_B/H?
P6SMB6.8CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8CAHM3_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 P6SMB6.8CAHM3_B/H?
For technical support, including P6SMB6.8CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB6.8CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8CAHM3_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 P6SMB6.8CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB6.8CAHM3_B/H?
All P6SMB6.8CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8CAHM3_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 P6SMB6.8CAHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB6.8CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8CAHM3_B/H Tags
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