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Vishay General Semiconductor - Diodes Division P6SMB68CA-M3/5B
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- Part No.:
- P6SMB68CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CA-M3/5B.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB68CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, 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 at 1 mA), 58.1 V stand-off voltage (VWM), and clamps to ≤92.0 V at 6.5 A peak pulse current (10/1000 μs waveform), delivering 600 W peak pulse power for surge protection in industrial sensor interfaces and automotive ECUs.
For engineers reviewing the P6SMB68CA-M3/5B datasheet, P6SMB68CA-M3/5B pinout, P6SMB68CA-M3/5B application, or P6SMB68CA-M3/5B equivalent, this device serves as a halogen-free, RoHS-compliant, bidirectional TVS with MSL Level 1 rating, optimized for automated SMT assembly and transient suppression in 12–48 V systems where low clamping voltage and fast response (<1 ns) are critical.
Technical Context
The P6SMB68CA-M3/5B operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity dependence. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM), while the SMB package provides thermal resistance of RθJA = 100 °C/W and RθJL = 20 °C/W for effective surge energy dissipation.
It complies with IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity requirements when applied with proper PCB layout-0.2" × 0.2" copper pads per terminal-and supports repetitive surge duty cycles up to 0.01 % at TA = 25 °C, derating linearly above that temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at IT = 1 mA - defines reliable conduction onset under bidirectional surge conditions |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | ≤92.0 V at 6.5 A (10/1000 μs) - clamping voltage limiting stress on downstream ICs like CAN transceivers or ADC inputs |
| PPPM | 600 W - peak transient power handling capability for short-duration surges (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| IPPM | 6.5 A - maximum non-repetitive peak pulse current supported with standard PCB pad layout |
| TJ max | +150 °C - enables operation in under-hood automotive or industrial environments without thermal shutdown |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and MSL Level 1 moisture sensitivity |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), cathode band omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; interchangeable connection for AC-coupled or differential signal lines |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (500 V/2 Ω) surges on 24 V systems when properly decoupled and routed |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and JESD201 Class 2 whisker resistance |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying high-volume SMT manufacturing |
Applications
| Automotive Body Control Module (BCM) | Industrial RS-485 Sensor Network |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump and jump-start induced transients in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between LIN line and ground, responding within <1 ns to suppress spikes exceeding 58.1 V. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers by limiting transient voltage to ≤92.0 V during 100 ms load-dump events. |
Use Scenario: Shielding RS-485 transceivers in factory-floor PLC I/O modules from EFT bursts and ground-loop surges. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B lines and to ground, providing symmetrical clamping for ±15 kV ESD (IEC 61000-4-2) and ±4 kV EFT (IEC 61000-4-4). Use Value: Maintains data integrity by holding common-mode voltage excursion below receiver threshold during 5/50 ns EFT pulses, avoiding false triggering or reset. |
| Smart Energy Meter Power Supply Input | Medical Patient Monitor Signal Conditioning |
|
Use Scenario: Safeguarding AC-DC converter input stage against lightning-induced surges on 230 VAC mains-connected meters. IC Role / Device Role / Timing Role: Secondary-level TVS placed after MOV and fuse, clamping residual transients to protect bridge rectifier and controller IC. Use Value: Limits let-through voltage to ≤92.0 V during 6 kV/3 kA combination wave tests, preventing overstress of 600 V rated diodes and capacitors. |
Use Scenario: Protecting analog front-end inputs (ECG, SpO₂) from ESD discharge during patient contact or cable handling. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS (CJ ≈ 100 pF at 0 V) placed at connector interface to shunt ESD current before amplifiers. Use Value: Clamps 8 kV contact ESD to <92 V in <1 ns, preserving signal fidelity and avoiding amplifier saturation or offset drift in sub-μV measurement paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68CA-TP | Same VBR range (64.6–71.4 V), but SMA package (smaller footprint, higher RθJA = 140 °C/W), lower IPPM (5.8 A) | Preferred for space-constrained designs where thermal margin allows reduced surge rating | Select SMAJ68CA-TP only if board area is critical and peak surge current remains ≤5.8 A with derated layout |
| 1.5SMC68CA | Same electrical specs, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), lower RθJA (60 °C/W), higher IPPM (7.2 A) | Better suited for high-reliability industrial power supplies requiring >6.5 A surge headroom | Choose 1.5SMC68CA when thermal performance or surge margin outweighs PCB area constraints |
Compared with SMAJ68CA-TP and 1.5SMC68CA, the P6SMB68CA-M3/5B delivers optimal balance of compact SMB footprint, 600 W surge capability, and halogen-free compliance-making it ideal for automotive and industrial SMT lines where MSL Level 1 handling and AEC-Q101-qualified variants (e.g., P6SMB68CAHM3_B) are required.
Availability
P6SMB68CA-M3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial communication interfaces, smart metering systems, and medical signal conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB68CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets robust transient suppression in harsh environments, engineered for automotive, industrial, and telecom applications where consistent clamping performance, AEC-Q101 qualification, and halogen-free compliance are mandatory.
FAQ
What is the breakdown voltage tolerance of the P6SMB68CA-M3/5B?
The P6SMB68CA-M3/5B has a specified breakdown voltage range of 64.6 V to 71.4 V at test current IT = 1 mA, corresponding to a ±5 % tolerance around the nominal 68 V rating. This tight VBR distribution ensures predictable clamping behavior across production lots and supports reliable system-level surge margin calculations in designs using the P6SMB68CA-M3/5B.
Is the P6SMB68CA-M3/5B suitable for automotive applications?
Yes-the P6SMB68CA-M3/5B is halogen-free and RoHS-compliant, and its base series is AEC-Q101 qualified when ordered with HE3 or HM3 suffixes (e.g., P6SMB68CAHM3_B). While the M3/5B variant itself is commercial-grade, it shares identical electrical and thermal characteristics with qualified versions and is widely deployed in non-safety-critical automotive subsystems such as infotainment power rails and sensor interfaces where the P6SMB68CA-M3/5B meets ISO 7637-2 immunity requirements.
What is the maximum clamping voltage of the P6SMB68CA-M3/5B under surge conditions?
The P6SMB68CA-M3/5B clamps to a maximum of 92.0 V when subjected to its rated peak pulse current of 6.5 A with a 10/1000 μs waveform. This VC value is measured under standardized test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads), and represents the upper limit of voltage seen by protected circuitry during transient events-critical for ensuring compatibility with 75 V-rated ICs in systems using the P6SMB68CA-M3/5B.
Does the P6SMB68CA-M3/5B have polarity markings?
No-the P6SMB68CA-M3/5B is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMB (DO-214AA) package. Its symmetrical construction allows either terminal to connect to the line or ground side of the protected circuit, simplifying layout for differential or AC-coupled applications where the P6SMB68CA-M3/5B is used across signal pairs or ungrounded rails.
What is the thermal resistance of the P6SMB68CA-M3/5B?
The P6SMB68CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a junction-to-lead resistance (RθJL) of 20 °C/W, measured under standard JEDEC conditions (0.2" × 0.2" copper pads per terminal). These values define its ability to dissipate surge energy thermally and inform layout decisions-such as minimum copper area and via count-when deploying the P6SMB68CA-M3/5B in high-duty-cycle or elevated ambient temperature environments.
P6SMB68CA-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB68CA-M3/5B FAQ
1.How can I place an order for P6SMB68CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CA-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 P6SMB68CA-M3/5B reliable?
The price and inventory of P6SMB68CA-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 P6SMB68CA-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB68CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CA-M3/5B?
P6SMB68CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CA-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 P6SMB68CA-M3/5B?
For technical support, including P6SMB68CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CA-M3/5B requirements.
6.How does Aetrix verify that P6SMB68CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB68CA-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 P6SMB68CA-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB68CA-M3/5B?
All P6SMB68CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CA-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 P6SMB68CA-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB68CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CA-M3/5B Tags
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