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Vishay General Semiconductor - Diodes Division P6SMB6.8CA-M3/5B
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- Part No.:
- P6SMB6.8CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8CA-M3/5B.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,136
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Product details
Overview
P6SMB6.8CA-M3/5B 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), 10.5 V maximum clamping voltage at 57.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB6.8CA-M3/5B datasheet, P6SMB6.8CA-M3/5B pinout, P6SMB6.8CA-M3/5B application, or P6SMB6.8CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.81), halogen-free RoHS compliance (M3 suffix), AEC-Q101 qualification availability, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable leakage (<1000 µA at VWM) and fast response time (<1 ns), while the low incremental surge resistance supports robust energy handling under repetitive 0.01% duty cycle surges.
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 M3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance - critical for long-term reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45 V min to 7.14 V max at 10 mA test current - defines precise voltage threshold where clamping initiates |
| Stand-off Voltage VWM | 5.8 V - maximum continuous reverse voltage before significant leakage; ensures no conduction during normal operation |
| Clamping Voltage VC | 10.5 V at 57.1 A IPPM - limits transient voltage seen by protected circuitry to safe levels |
| Peak Pulse Power PPPM | 600 W with 10/1000 µs waveform - quantifies single-event surge energy absorption capability |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" × 0.130" footprint and 0.086" height for high-density PCB layouts |
| Operating Temperature | -65 °C to +150 °C - enables deployment in extended-temperature automotive and industrial environments |
| Leakage Current ID | ≤1000 µA at VWM - ensures minimal standby power loss and signal integrity in low-power circuits |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as anode or cathode depending on transient polarity; no band marking required |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without derating in standard layouts |
| Low clamping ratio (VC/VWM = 1.81) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end-equipment without compromising thermal performance |
| AEC-Q101 qualified option (_B suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| MSL Level 1 (260 °C peak reflow) | Supports single-reflow assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and precision op-amps by limiting induced voltages to ≤10.5 V. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across input terminals to clamp voltage spikes before optocoupler or Schmitt trigger input stages. Use Value: Maintains functional safety integrity by ensuring input stage remains within absolute maximum ratings during 1 kV/500 A surge events. |
| Consumer USB Port ESD Protection | Telecom Line Card Surge Suppression |
|
Use Scenario: Secondary-level protection on USB 2.0 data lines (D+/D−) after primary ESD array, guarding against system-level ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS providing sub-nanosecond response to ±15 kV contact discharge per IEC 61000-4-2. Use Value: Preserves signal integrity with <1 pF junction capacitance (typ.) while delivering 600 W surge immunity - avoids data corruption or link dropouts. |
Use Scenario: Front-end protection on xDSL or Ethernet line cards exposed to lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at line interface connector, coordinated with gas discharge tubes (GDTs) for staged protection. Use Value: Absorbs up to 600 W of transient energy per event, reducing follow-on current stress on secondary protection components and extending board lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA-T | Same SMB package, 600 W rating, but VBR min = 7.14 V (vs. 6.45 V); higher VWM = 6.0 V; JEDEC-qualified, not AEC-Q101 available | Marginally higher clamping threshold reduces protection margin for 5 V logic; better suited for 6 V nominal rails | Select when tighter VBR tolerance is not required and JEDEC-only qualification suffices |
| 1.5SMC6.8CA | Higher-power 1500 W version in larger SMC (DO-214AB) package; same VBR/VWM range; 2.5× footprint area; RθJA = 40 °C/W | Requires PCB redesign due to larger pad layout; preferred for high-reliability telecom infrastructure with frequent surges | Choose only when 600 W is insufficient and thermal management allows larger package |
Compared with SMBJ6.8CA-T and 1.5SMC6.8CA, P6SMB6.8CA-M3/5B offers the lowest clamping voltage (10.5 V) among SMB-form-factor bidirectional TVS diodes at this voltage grade, combined with halogen-free compliance and optional AEC-Q101 qualification - making it optimal for space-constrained, automotive-qualified designs requiring tight voltage margins.
Availability
P6SMB6.8CA-M3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply, halogen-free compliance, and AEC-Q101-ready variants.
Supply support for P6SMB6.8CA-M3/5B 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, efficiency, and application-specific optimization.
The P6SMB Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and consumer electronics - engineered for automated assembly, low-profile mounting, and consistent clamping performance across temperature and life cycles.
FAQ
What is the maximum clamping voltage of P6SMB6.8CA-M3/5B at its rated peak pulse current?
The P6SMB6.8CA-M3/5B has a maximum clamping voltage (VC) of 10.5 V at its specified peak pulse current (IPPM) of 57.1 A, measured using a 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88370, Rev. 09-Jan-2024) and reflects worst-case clamping performance under standardized surge conditions. The P6SMB6.8CA-M3/5B maintains this clamping level across its full operating temperature range (-65 °C to +150 °C) when mounted per recommended pad layout.
Is P6SMB6.8CA-M3/5B suitable for automotive applications?
Yes - the P6SMB6.8CA-M3/5B is offered in an AEC-Q101 qualified variant (ordering code P6SMB6.8CAHM3_B/I or P6SMB6.8CAHE3_B/I), which undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per the AEC-Q101 standard. While the base P6SMB6.8CA-M3/5B is commercial-grade, its M3 suffix ensures halogen-free, RoHS-compliant construction and MSL Level 1 reflow compatibility - all foundational for automotive use. The P6SMB6.8CA-M3/5B itself is commonly deployed in non-safety-critical automotive subsystems such as body control modules and infotainment interfaces.
How does the bidirectional configuration of P6SMB6.8CA-M3/5B affect its PCB layout?
The bidirectional configuration of P6SMB6.8CA-M3/5B eliminates polarity marking - the device has no cathode band and both terminals are functionally identical. This simplifies PCB layout by removing orientation constraints during placement and allows routing symmetry across differential or AC-coupled lines. Layout must still follow Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad dimensions per terminal to ensure rated 600 W pulse power dissipation. No silkscreen polarity indicator is needed for the P6SMB6.8CA-M3/5B, reducing assembly errors and supporting automated optical inspection.
What is the leakage current specification for P6SMB6.8CA-M3/5B at its stand-off voltage?
The P6SMB6.8CA-M3/5B specifies a maximum reverse leakage current (ID) of 1000 µA at its stand-off voltage (VWM) of 5.8 V, tested at TA = 25 °C. This leakage remains stable over temperature and is verified per the electrical characteristics table in the official Vishay datasheet (88370). At lower voltages (e.g., 3.3 V or 5 V rails), leakage drops significantly - typically <1 µA - making the P6SMB6.8CA-M3/5B suitable for low-power always-on circuits without measurable battery drain impact.
Does P6SMB6.8CA-M3/5B require derating at elevated ambient temperatures?
Yes - the P6SMB6.8CA-M3/5B must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (88370). Its peak pulse power capability decreases linearly: at 85 °C ambient, PPPM is reduced to ~70% of 600 W (~420 W); at 125 °C, it falls to ~40% (~240 W). Derating applies only to repetitive surges - single-event capability remains intact. Thermal design must account for RθJA = 100 °C/W and ensure junction temperature stays below 150 °C. The P6SMB6.8CA-M3/5B achieves this with proper copper pour and pad sizing, not heatsinking.
P6SMB6.8CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB6.8CA-M3/5B FAQ
1.How can I place an order for P6SMB6.8CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8CA-M3/5B 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 P6SMB6.8CA-M3/5B reliable?
The price and inventory of P6SMB6.8CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8CA-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB6.8CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8CA-M3/5B?
P6SMB6.8CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8CA-M3/5B 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 P6SMB6.8CA-M3/5B?
For technical support, including P6SMB6.8CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8CA-M3/5B requirements.
6.How does Aetrix verify that P6SMB6.8CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8CA-M3/5B 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 P6SMB6.8CA-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB6.8CA-M3/5B?
All P6SMB6.8CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8CA-M3/5B, 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 P6SMB6.8CA-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB6.8CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8CA-M3/5B Tags
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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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