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Vishay General Semiconductor - Diodes Division P6SMB68CAHM3_A/I
- Part No.:
- P6SMB68CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHM3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
P6SMB68CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 68 V breakdown voltage (VBR min/max = 64.6–71.4 V), 600 W peak pulse power (10/1000 µs), and clamps to ≤92.0 V at 6.5 A peak pulse current - used in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P6SMB68CAHM3_A/I datasheet, P6SMB68CAHM3_A/I pinout, P6SMB68CAHM3_A/I application, or P6SMB68CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and compliance with IEC 61000-4-2/4-4/4-5 transient immunity requirements.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM = 58.1 V), while the low incremental surge resistance enables rapid energy dissipation during ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 100 °C/W) reflects standard SMB mounting on 5.0 mm × 5.0 mm copper pads - critical for sustained surge handling in automotive-grade designs requiring long-term reliability under thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise voltage threshold where clamping initiates in either polarity |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA; sets safe working margin below breakdown |
| VC @ IPPM | 92.0 V at 6.5 A peak pulse - actual clamped voltage seen by protected circuit during 10/1000 µs surge event |
| PPPM | 600 W - peak transient power absorption capacity with 0.01% duty cycle; supports repetitive surge events in industrial environments |
| TJ max | 150 °C - maximum junction temperature rating enabling operation in under-hood automotive or high-ambient industrial enclosures |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place |
| AEC-Q101 | Qualified - validated for automotive applications including engine control modules, ADAS sensor interfaces, and infotainment power rails |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function identically as anode and cathode depending on applied voltage polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous voltage polarity; no fixed polarity assignment |
| Terminal 2 | Anode/Cathode (bidirectional) | Complementary terminal completing symmetrical clamping path; forms low-impedance shunt to ground/rail during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns - e.g., RS-485, CAN FD, or USB data pairs |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing - required for Tier-1 supplier BOMs |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV line-to-earth) surges when properly mounted on recommended 5.0 mm × 5.0 mm copper pads |
| Low clamping ratio (VC/VBR) | 1.43× (92.0 V / 64.6 V) - minimizes overvoltage stress on downstream ICs such as microcontrollers or transceivers |
| Halogen-free & RoHS-compliant | HM3 suffix confirms halogen-free molding compound and full RoHS compliance - meets EU ELV and China RoHS requirements |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor signal line and chassis ground to clamp ±100 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to 12-bit ADC front-ends and op-amps operating at 3.3 V or 5 V supply rails. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring surges and ESD events. IC Role / Device Role / Timing Role: Shunt protector installed across input terminals to divert >1 kV fast transients before reaching precision current-sense amplifier. Use Value: Maintains <±0.1% measurement accuracy after repeated 8 kV contact ESD strikes per IEC 61000-4-2 Level 4. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Safeguarding Ethernet PHY or xDSL line drivers against lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of gas discharge tube (GDT) in hybrid protection scheme. Use Value: Limits let-through voltage to <120 V during 10/700 µs telecom surge, preserving integrity of 2.5 V tolerant PHY transceivers. |
Use Scenario: Adding secondary-level surge protection to USB 2.0 data lines (D+/D−) in portable media players and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor (CJ ≈ 100 pF at 0 V) placed directly at connector pins. Use Value: Passes USB 2.0 eye diagram compliance while suppressing ±15 kV air-gap ESD per IEC 61000-4-2 without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/5B | Unidirectional; VBR = 71.1–78.6 V; same SMB package but lacks bidirectional symmetry | Requires separate devices for dual-rail protection; unsuitable for AC or differential signals without redesign | Select only if protecting DC rails with defined polarity and space constraints preclude dual-device layout |
| SMCJ64CA | Higher 1500 W rating; larger SMC (DO-214AB) package; VBR = 71.1–78.6 V; not AEC-Q101 qualified | Used where higher surge margin is needed but automotive qualification is not required - e.g., industrial UPS systems | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and PCB area allows larger footprint |
Compared with SMAJ64A-E3/5B and SMCJ64CA, P6SMB68CAHM3_A/I uniquely combines bidirectional operation, AEC-Q101 qualification, and compact SMB packaging - making it optimal for space-constrained automotive and industrial signal-line protection where polarity-agnostic clamping is mandatory.
Availability
P6SMB68CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line protection requiring stable component supply across extended production lifecycles.
Supply support for P6SMB68CAHM3_A/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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade validation.
The P6SMB series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for robustness under thermal stress, mechanical vibration, and repetitive surge events.
FAQ
What does the "CA" suffix indicate in P6SMB68CAHM3_A/I?
The "CA" suffix in P6SMB68CAHM3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. This eliminates the need for polarity-aware placement during assembly and enables direct protection of AC-coupled or differential signal paths - a key distinction from unidirectional variants like P6SMB68AHM3_A/I.
Is P6SMB68CAHM3_A/I suitable for automotive applications?
Yes, P6SMB68CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and Vishay's documentation. It undergoes rigorous stress testing including temperature cycling, mechanical shock, and humidity exposure - making it approved for use in engine control units, body electronics, and ADAS sensor modules where reliability under harsh conditions is mandatory.
What is the clamping voltage of P6SMB68CAHM3_A/I at its rated peak pulse current?
P6SMB68CAHM3_A/I clamps to a maximum of 92.0 V at its specified peak pulse current of 6.5 A (10/1000 µs waveform). This value is measured under standardized test conditions and represents the highest voltage imposed on the protected circuit during a surge event - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the HM3 suffix differ from E3 or M3 in P6SMB68CAHM3_A/I?
The HM3 suffix in P6SMB68CAHM3_A/I indicates halogen-free, RoHS-compliant construction combined with AEC-Q101 qualification. In contrast, E3 denotes RoHS-compliant commercial grade only, and M3 adds halogen-free material but no automotive qualification. The HM3 variant is specifically intended for automotive-tier production with full process and reliability validation.
Can P6SMB68CAHM3_A/I be used in place of P6SMB68AHE3_B/I?
No - P6SMB68CAHM3_A/I is bidirectional and AEC-Q101 qualified, whereas P6SMB68AHE3_B/I is unidirectional and commercially qualified. Substituting them would compromise protection on AC or differential lines and invalidate automotive compliance. The "CA" vs. "A" suffix and "HM3" vs. "HE3" coding reflect fundamental functional and qualification differences that prevent interchangeability.
P6SMB68CAHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB68CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHM3_A/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_A/I reliable?
The price and inventory of P6SMB68CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHM3_A/I?
P6SMB68CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHM3_A/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_A/I?
For technical support, including P6SMB68CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB68CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHM3_A/I?
All P6SMB68CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB68CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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