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Vishay General Semiconductor - Diodes Division P6SMB68CAHM3_B/I
- Part No.:
- P6SMB68CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHM3_B/I.pdf
- Description:
- 600W,68V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,051
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Product details
Overview
P6SMB68CAHM3_B/I 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 58.1 V standoff voltage (VWM), 64.6–71.4 V breakdown voltage (VBR) at 1 mA, 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB68CAHM3_B/I datasheet, P6SMB68CAHM3_B/I pinout, P6SMB68CAHM3_B/I application, or P6SMB68CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It responds to transient overvoltages within picoseconds and maintains low incremental surge resistance to limit let-through energy during 10/1000 μs surges.
Designed for automotive-grade reliability, P6SMB68CAHM3_B/I meets AEC-Q101 stress test requirements and is rated for junction temperatures from –65 °C to +150 °C. Its glass-passivated junction and matte tin-plated leads ensure robust solderability per J-STD-002 and whisker resistance per JESD 201 Class 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 58.1 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (Breakdown Voltage) | 64.6–71.4 V at 1 mA - Voltage at which device transitions into avalanche conduction; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 92.0 V at 6.5 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorption capacity under standardized 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 3 surges |
| TJ max. | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - Low-profile surface-mount package with 0.220" × 0.205" footprint; optimized for high-density PCB layouts and reflow compatibility |
| Qualification | AEC-Q101 qualified, halogen-free, RoHS-compliant - Meets automotive electronics reliability and environmental standards for front-end and sensor interface protection |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 0.220" × 0.205" × 0.096" (5.59 mm × 5.21 mm × 2.44 mm); terminals are matte tin-plated for reliable soldering per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical bidirectional terminals - either lead serves as input/output for clamping; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric protection of AC-coupled or differential signal lines without polarity constraints |
| 600 W peak pulse power (10/1000 μs) | Supports robust immunity to lightning-induced surges and inductive switching transients in automotive and industrial systems |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, ADAS sensors, and body electronics |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and enables use in green manufacturing and end-of-life recycling programs |
| MSL Level 1 (260 °C peak) | Permits single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended signal lines upstream of receiver ICs. Use Value: Limits transient voltage to ≤92.0 V during 6.5 A surges, preventing damage to 5 V or 3.3 V interface ICs while maintaining signal integrity. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp at terminal block or connector entry point, coordinated with series impedance and filtering. Use Value: Absorbs up to 600 W of transient energy without degradation, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) standards. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHY interfaces and DSL line drivers from induced surges on outdoor cabling in telecom access equipment. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) or polymer PTC, providing fast-response clamping. Use Value: Sub-nanosecond response time and 92.0 V clamping ensure downstream PHY ICs remain within absolute maximum ratings during multi-kV transients. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Across-motor terminals or across H-bridge freewheeling paths to clamp inductive kickback. Use Value: Withstands repetitive 600 W pulses at 0.01 % duty cycle, extending motor driver MOSFET lifetime and reducing electromagnetic emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA | Same SMB package, 64 V VWM, 71.1–78.6 V VBR, 103 V VC at 5.8 A - higher clamping voltage, lower peak pulse current (400 W) | Limited to less demanding surge environments (e.g., consumer USB ports); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and tighter clamping is not required |
| 1.5SMC68CA | Higher-power SMC package (1500 W), same 68 V nominal rating, 92 V VC at 16.3 A - larger footprint, higher thermal mass | Suitable for main power rail protection where board space allows; requires larger pad layout and higher IPC | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and SMB-level energy absorption is insufficient |
Compared with SMAJ64CA and 1.5SMC68CA, P6SMB68CAHM3_B/I delivers AEC-Q101 reliability in a compact SMB footprint with balanced 600 W capability and 92.0 V clamping - making it optimal for space-constrained automotive and industrial signal-line protection where qualification and consistency are critical.
Availability
P6SMB68CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line card surge protection, and consumer appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB68CAHM3_B/I 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series is engineered for high-energy transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 qualification, and surface-mount scalability across 6.8 V to 540 V ratings.
FAQ
What is the clamping voltage of P6SMB68CAHM3_B/I at its rated peak pulse current?
The P6SMB68CAHM3_B/I has a maximum clamping voltage (VC) of 92.0 V at 6.5 A peak pulse current under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is P6SMB68CAHM3_B/I suitable for automotive applications?
Yes, P6SMB68CAHM3_B/I is AEC-Q101 qualified and carries the HM3_B/I suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly rated for junction temperatures from –65 °C to +150 °C and tested per AEC-Q101 stress conditions - making it appropriate for under-hood, ADAS, and body control module applications.
Does P6SMB68CAHM3_B/I have polarity markings on the package?
No, P6SMB68CAHM3_B/I is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMB (DO-214AA) case. Its symmetrical construction means either terminal may be connected to line or ground - simplifying layout and eliminating orientation errors during automated placement.
What is the standoff voltage (VWM) of P6SMB68CAHM3_B/I, and why does it matter?
The standoff voltage (VWM) of P6SMB68CAHM3_B/I is 58.1 V - the maximum continuous reverse voltage the device can withstand without entering avalanche conduction. This parameter ensures reliable operation under normal system conditions while preserving margin below the 64.6–71.4 V breakdown range, preventing false triggering during voltage ripple or tolerance drift.
How does the SMB package of P6SMB68CAHM3_B/I compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB68CAHM3_B/I measures 0.220" × 0.205", offering 30 % smaller footprint than SMA (DO-214AC) and 55 % smaller than SMC (DO-214AB). While SMC variants like 1.5SMC68CA deliver higher 1500 W power handling, P6SMB68CAHM3_B/I achieves optimal balance of 600 W capability, AEC-Q101 qualification, and space efficiency for signal-line protection.
P6SMB68CAHM3_B/I 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- 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)
P6SMB68CAHM3_B/I FAQ
1.How can I place an order for P6SMB68CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHM3_B/I 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 P6SMB68CAHM3_B/I reliable?
The price and inventory of P6SMB68CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHM3_B/I?
P6SMB68CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHM3_B/I 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 P6SMB68CAHM3_B/I?
For technical support, including P6SMB68CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB68CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHM3_B/I 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 P6SMB68CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHM3_B/I?
All P6SMB68CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHM3_B/I, 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 P6SMB68CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB68CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHM3_B/I Tags
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