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Vishay General Semiconductor - Diodes Division P4SMA6.8A-M3/5A
- Part No.:
- P4SMA6.8A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA6.8A-M3/5A.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,702
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Product details
Overview
P4SMA6.8A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 6.45 V to 7.14 V breakdown voltage at 10 mA test current, 5.8 V standoff voltage, 1000 µA max reverse leakage at VWM, 10.5 V clamping voltage at 38.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA6.8A-M3/5A datasheet, P4SMA6.8A-M3/5A pinout, P4SMA6.8A-M3/5A application, or P4SMA6.8A-M3/5A equivalent, key selection criteria include unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), AEC-Q101 qualification status, halogen-free RoHS compliance (M3 suffix), and clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its breakdown threshold (VBR), it avalanches rapidly to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping across repeated events.
Designed for surface-mount automation, the device meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 40 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation from –65 °C to +150 °C junction temperature - critical for under-hood automotive and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at IT = 10 mA - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| ID (max) | 1000 µA at VWM - low leakage preserves signal integrity in high-impedance circuits |
| VC (at IPPM) | 10.5 V at 38.1 A - clamping voltage during 10/1000 µs surge determines protected IC's stress margin |
| PPPM | 400 W (10/1000 µs) - peak transient energy handling capacity with 0.01% duty cycle derating |
| TJ max. | +150 °C - enables use in high-temperature automotive and industrial enclosures without thermal shutdown |
| RθJA | 120 °C/W - thermal resistance from junction to ambient dictates PCB copper pad sizing for power dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connects to protected line; conducts avalanche current to ground during overvoltage event |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or lower-potential rail; completes shunt conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V supply rails |
| AEC-Q101 qualified (M3 suffix) | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR drift ≤ ±5% over lifetime and improved humidity resistance vs. epoxy-passivated alternatives |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing without baking - reduces manufacturing cost and risk |
| Halogen-free & RoHS-compliant (M3) | Meets EU ELV Directive and OEM sustainability requirements for Tier 1 automotive supply chains |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., oxygen, pressure) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input stages. Use Value: Limits clamping voltage to 10.5 V, ensuring protected transceiver remains within absolute maximum ratings during 400 W surges. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to absorb repetitive 10/1000 µs transients without degradation. Use Value: Withstands 0.01% duty cycle surges up to 400 W while maintaining <1000 µA leakage at 5.8 V, preserving input detection accuracy. |
| Consumer Power Adapter Output | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side overvoltage suppression on 5 V/9 V USB-C PD adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS placed between VOUT and GND to suppress sub-100 ns ESD and switching spikes. Use Value: 10.5 V clamping voltage prevents damage to downstream USB-PD controllers rated for 6.5 V absolute max input. |
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers against lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Low-capacitance TVS integrated into hybrid coupler interface to limit common-mode transients without signal distortion. Use Value: 120 °C/W RθJA allows direct mounting on compact telecom module PCBs with minimal copper area, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A-T | Higher 600 W PPPM rating; SMB package (DO-214AA), larger footprint and higher RθJA (100 °C/W) | Better suited for higher-energy surges but requires more PCB area; not drop-in compatible due to different pad layout | Select when surge energy exceeds 400 W and board space permits larger package |
| 1.5SMC6.8A | Same 400 W rating but SMC (DO-214AB) package; 1.5 kW peak pulse capability only with derated waveform | Higher thermal mass improves reliability in high-temperature ambient but slower response than SMA due to junction capacitance | Choose for legacy designs using SMC footprints or where higher surge repetition tolerance is needed |
Compared with SMBJ6.8A-T and 1.5SMC6.8A, the P4SMA6.8A-M3/5A offers optimal balance of compact SMA footprint, AEC-Q101 qualification, halogen-free compliance, and verified 400 W clamping performance - making it preferred for space-constrained automotive and industrial modules requiring production-grade reliability.
Availability
P4SMA6.8A-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter output protection requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for P4SMA6.8A-M3/5A 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 automotive, industrial, and computing applications.
The P4SMA6.8A-M3/5A belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-reliability transient suppression in harsh environments where AEC-Q101 validation, low leakage, and repeatable clamping are mandatory.
FAQ
What is the breakdown voltage tolerance of P4SMA6.8A-M3/5A?
The P4SMA6.8A-M3/5A has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, corresponding to a ±5% tolerance around the nominal 6.8 V rating. This tight VBR window ensures predictable clamping behavior across production lots and temperature ranges, critical for protecting 5 V logic interfaces where overvoltage margins are narrow. The P4SMA6.8A-M3/5A achieves this via glass passivation and precision wafer-level testing.
Is P4SMA6.8A-M3/5A suitable for automotive applications?
Yes, the P4SMA6.8A-M3/5A is AEC-Q101 qualified (as confirmed by Vishay's ordering code suffix "M3" and documentation revision 09-Jan-2024), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its –65 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and halogen-free construction meet Tier 1 OEM requirements. The P4SMA6.8A-M3/5A is explicitly listed in Vishay's AEC-Q101 qualified product table for the P4SMA series.
What does the "M3" suffix indicate in P4SMA6.8A-M3/5A?
The "M3" suffix in P4SMA6.8A-M3/5A denotes halogen-free, RoHS-compliant construction with whisker-resistant matte tin plating, meeting JESD 201 Class 2 standards. It also signifies AEC-Q101 qualification for automotive use. This distinguishes it from "E3" (RoHS-compliant commercial grade) and "HM3" (halogen-free + AEC-Q101 with additional revision coding). The P4SMA6.8A-M3/5A uses the same die and electrical specs as other P4SMA6.8A variants but adds material and reliability certifications required for automotive supply chains.
How does P4SMA6.8A-M3/5A compare to bidirectional TVS diodes like P4SMA6.8CA?
The P4SMA6.8A-M3/5A is unidirectional and intended for DC line protection where polarity is fixed (e.g., 5 V supply rail to ground), offering lower leakage (<1000 µA at 5.8 V) and tighter VBR control. In contrast, P4SMA6.8CA is bidirectional, suitable for AC or floating signal lines (e.g., RS-485), but exhibits higher leakage and symmetric clamping in both directions. The P4SMA6.8A-M3/5A cannot replace P4SMA6.8CA in AC-coupled applications due to polarity dependence and lack of reverse-direction breakdown specification.
What is the maximum clamping voltage of P4SMA6.8A-M3/5A under surge conditions?
The P4SMA6.8A-M3/5A has a maximum clamping voltage (VC) of 10.5 V at 38.1 A peak pulse current with a 10/1000 µs waveform - verified per Figure 1 and Table on page 2 of Vishay document 88367. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events. Designers must ensure that protected ICs have absolute maximum ratings exceeding 10.5 V; the P4SMA6.8A-M3/5A achieves this clamping level while dissipating 400 W transient power without failure.
P4SMA6.8A-M3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 38.1A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA6.8A-M3/5A FAQ
1.How can I place an order for P4SMA6.8A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA6.8A-M3/5A 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 P4SMA6.8A-M3/5A reliable?
The price and inventory of P4SMA6.8A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA6.8A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA6.8A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA6.8A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA6.8A-M3/5A?
P4SMA6.8A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA6.8A-M3/5A 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 P4SMA6.8A-M3/5A?
For technical support, including P4SMA6.8A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA6.8A-M3/5A requirements.
6.How does Aetrix verify that P4SMA6.8A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA6.8A-M3/5A 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 P4SMA6.8A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA6.8A-M3/5A?
All P4SMA6.8A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA6.8A-M3/5A, 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 P4SMA6.8A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA6.8A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA6.8A-M3/5A Tags
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