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Vishay General Semiconductor - Diodes Division P6SMB68CAHM3/H
- Part No.:
- P6SMB68CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHM3/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,515
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Product details
Overview
P6SMB68CAHM3/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 or 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, industrial I/O ports, and telecom line drivers.
For engineers reviewing the P6SMB68CAHM3/H datasheet, P6SMB68CAHM3/H pinout, P6SMB68CAHM3/H application, or P6SMB68CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast transient response under repetitive 0.01% duty cycle conditions.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) when mounted per recommended pad layout. Its 600 W peak pulse power handling is derated linearly above 25 °C ambient per Fig. 2 in the datasheet, maintaining robust surge immunity across extended industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 58.1 V - Maximum continuous reverse voltage before significant leakage; defines safe operating window for protected circuit. |
| VBR (Breakdown) | 64.6–71.4 V at 1 mA - Voltage at which device enters avalanche conduction; tight tolerance enables precise overvoltage thresholding. |
| VC (Clamping) | 92.0 V at 6.5 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components. |
| PPPM | 600 W - Peak transient energy absorption capacity; validates suitability for IEC 61000-4-5 Level 4 (4 kV) surge testing. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-temperature industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with J-STD-020 reflow profiles up to 260 °C peak. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required for bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity constraints. |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 6.5 A while limiting clamped voltage to ≤92.0 V - sufficient for IEC 61000-4-5 Ed. 3 Class 4 compliance. |
| AEC-Q101 qualified (HM3) | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing - suitable for under-hood and chassis-mounted ECUs. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-20D MSL Level 1 and JESD201 Class 2 whisker resistance - supports lead-free manufacturing and long-term reliability. |
| Low-profile SMB package | 0.086" height enables compact PCB layouts in space-constrained modules such as automotive radar sensors and industrial PLC I/O cards. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching sensitive analog front-end or communication ICs. Use Value: Clamps 10/1000 µs surges to ≤92.0 V while maintaining <1.0 µA leakage at 58.1 V - preserves signal integrity and prevents false triggering in low-power sensor circuits. | Use Scenario: Safeguarding programmable logic controller (PLC) digital input channels against field-induced surges from solenoid switching or lightning coupling. IC Role / Device Role / Timing Role: Primary transient suppression element on 24 V DC input lines, positioned upstream of optocouplers or level-shifting buffers. Use Value: 600 W pulse rating and 150 °C TJ max enable reliable operation in harsh factory-floor environments with ambient temperatures up to 85 °C. |
| Telecom Line Driver Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from induced surges on long cable runs. IC Role / Device Role / Timing Role: Symmetrical TVS placed across differential pair (A/B) and common-mode (GND) to suppress both differential and common-mode transients. Use Value: Bidirectional behavior ensures identical clamping in either polarity - critical for full-duplex data links where signal swing crosses zero reference. | Use Scenario: Secondary-side overvoltage protection in USB-C PD adapters and smart home power supplies exposed to mains-borne transients. IC Role / Device Role / Timing Role: Clamp component on 5–20 V output rails to prevent damage to USB-PD controllers and load switches during output short-circuit recovery. Use Value: 58.1 V VWM provides margin above 20 V PD profiles while 92.0 V VC stays below MOSFET drain-source breakdown limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | 64 V VWM, 71.1–78.6 V VBR, 103 V VC at 5.8 A; same SMB package but non-AEC-Q101, commercial-grade (M3 suffix only) | Lacks automotive qualification; not validated for temperature cycling or mechanical shock per AEC-Q101 | Select when cost-sensitive industrial designs require equivalent clamping performance without automotive certification. |
| 1.5SMC68CA | 68 V VWM, 75.6–83.6 V VBR, 110 V VC at 5.5 A; larger SMC (DO-214AB) package, 1500 W rating | Higher clamping voltage and larger footprint; requires PCB redesign and higher surge margin | Choose only if system-level surge testing exceeds 600 W requirements and board space permits SMC footprint. |
Compared with SMBJ64CA and 1.5SMC68CA, P6SMB68CAHM3/H delivers tighter VBR tolerance (±5%), lower VC (92.0 V vs. ≥103 V), and guaranteed AEC-Q101 qualification - making it the preferred choice for automotive and high-reliability industrial deployments where clamping precision and qualification traceability are mandatory.
Availability
P6SMB68CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line driver protection requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB68CAHM3/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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and communications systems - engineered for robustness under repetitive surge stress and compatibility with automated SMT assembly processes.
FAQ
What does the 'CA' suffix indicate in P6SMB68CAHM3/H?
The 'CA' suffix in P6SMB68CAHM3/H denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P6SMB68AHM3/H), this version provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, differential buses, or floating power domains without concern for polarity orientation during PCB layout.
Is P6SMB68CAHM3/H qualified for automotive applications?
Yes, P6SMB68CAHM3/H is AEC-Q101 qualified, as confirmed by the 'HM3' suffix and Vishay documentation. This qualification covers rigorous testing for temperature cycling, mechanical shock, humidity resistance, and high-temperature operating life - validating its use in engine control units, ADAS sensors, and body electronics where reliability under vibration and thermal stress is critical.
What is the maximum clamping voltage of P6SMB68CAHM3/H and at what current is it specified?
The maximum clamping voltage of P6SMB68CAHM3/H is 92.0 V, measured at a peak pulse current (IPPM) of 6.5 A using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream components remain within their absolute maximum ratings.
How does the SMB (DO-214AA) package of P6SMB68CAHM3/H compare to SMC (DO-214AB) in terms of board space and thermal performance?
The SMB package of P6SMB68CAHM3/H measures 0.220" × 0.130" - approximately 40% smaller than the SMC (DO-214AB) footprint. While SMB offers superior space efficiency for dense layouts, its thermal resistance (RθJA = 100 °C/W) is higher than SMC's (~60 °C/W), meaning P6SMB68CAHM3/H relies more heavily on proper copper pad design (0.2" × 0.2" minimum per terminal) to maintain safe junction temperatures under sustained surge duty.
Does P6SMB68CAHM3/H require a heatsink for standard 600 W surge operation?
No, P6SMB68CAHM3/H does not require an external heatsink for single-event 600 W surge handling, as its rating assumes mounting on 0.2" × 0.2" copper pads per terminal - providing sufficient thermal mass and conduction path. However, for repetitive surges above 0.01% duty cycle, thermal derating per Fig. 2 must be applied, and board-level copper area becomes the primary thermal management mechanism instead of discrete heatsinks.
P6SMB68CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for P6SMB68CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHM3/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 P6SMB68CAHM3/H reliable?
The price and inventory of P6SMB68CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHM3/H?
P6SMB68CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHM3/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 P6SMB68CAHM3/H?
For technical support, including P6SMB68CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHM3/H requirements.
6.How does Aetrix verify that P6SMB68CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHM3/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 P6SMB68CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHM3/H?
All P6SMB68CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHM3/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 P6SMB68CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB68CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHM3/H Tags
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