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Vishay General Semiconductor - Diodes Division P4SMA6.8CA-E3/61
- Part No.:
- P4SMA6.8CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA6.8CA-E3/61.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,554
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Product details
Overview
P4SMA6.8CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 6.8 V breakdown voltage (VBR), 5.8 V standoff voltage (VWM), 400 W peak pulse power (10/1000 µs), 38.1 A peak pulse current (IPPM), and 10.5 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA6.8CA-E3/61 datasheet, P4SMA6.8CA-E3/61 pinout, P4SMA6.8CA-E3/61 application, or P4SMA6.8CA-E3/61 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance (RθJA = 120 °C/W), AEC-Q101 qualification status, and RoHS-compliant commercial-grade sourcing details - all critical for ESD/surge protection design-in and BOM validation.
Technical Context
The P4SMA6.8CA-E3/61 operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling transient suppression on AC-coupled or floating signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 µA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
It delivers 400 W peak pulse power under standardized 10/1000 µs waveform conditions when mounted on 5.0 mm × 5.0 mm copper pads, with derating above 25 °C per Figure 2. The device exhibits 0.057 %/°C temperature coefficient of VBR, ensuring predictable voltage shift across its -65 °C to +150 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise avalanche initiation window for reliable clamping onset |
| VWM | 5.8 V - maximum continuous reverse voltage before significant leakage begins; sets safe operating margin below VBR |
| IPPM | 38.1 A (10/1000 µs) - peak surge current capability determines protection level against IEC 61000-4-5 line surges |
| VC | 10.5 V at IPPM - clamped voltage seen by protected circuit; must stay below downstream component absolute max ratings |
| PPPM | 400 W (10/1000 µs) - energy-handling capacity for single-event transients; derates to 300 W above 91 V devices |
| RθJA | 120 °C/W - junction-to-ambient thermal resistance; informs PCB pad sizing and layout for thermal reliability |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during positive transient | One side of symmetrical avalanche junction; connects to line being protected |
| Cathode | Current entry terminal during negative transient | Other side of symmetrical junction; ties to same line or reference plane as Anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection on AC, differential, or floating nodes without polarity constraints |
| 400 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 3 surge immunity requirements for industrial equipment |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
| AEC-Q101 qualified option available | Validated for automotive applications including body control modules and sensor interfaces |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage drift over temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector or IC input pins to limit transient overvoltage before it reaches sensitive silicon. Use Value: Clamps 10.5 V at 38.1 A, keeping protected transceiver VCC and I/O rails within safe operating area during ISO 7637-2 Pulse 1/2/5a events. |
Use Scenario: Shielding digital and analog I/O channels of programmable logic controllers from field-induced surges due to relay coil flyback or motor drive noise. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on 24 V DC input/output terminals, working alongside filtering capacitors and series impedance. Use Value: Withstands 400 W pulses and maintains <1000 µA leakage at 5.8 V, preserving signal integrity while blocking destructive transients. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
|
Use Scenario: Safeguarding secondary-side DC outputs of wall adapters and USB PD chargers against ESD and fast transient bursts during plug insertion or cable coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS placed after rectification but before LDO or DC-DC regulator to prevent latch-up or gate oxide damage. Use Value: 10.5 V clamping voltage ensures downstream 5 V/3.3 V regulators remain unexposed to overvoltage beyond their absolute maximum ratings. |
Use Scenario: Protecting Ethernet PHYs, DSL line drivers, and RS-485 transceivers from lightning-induced surges and induced transients on twisted-pair cabling. IC Role / Device Role / Timing Role: First-line defense on differential pairs or single-ended lines, absorbing energy before it propagates into isolation transformers or IC bond wires. Use Value: Symmetrical 6.45–7.14 V breakdown allows identical protection on both conductors, maintaining common-mode rejection during surge events. |
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 | Higher 600 W PPPM, larger SMB (DO-214AA) package, 11.2 V VC at 34.4 A | Better suited for higher-energy surges; requires larger PCB footprint and different pad layout | Select when system-level surge testing exceeds 400 W or when legacy SMB layout exists |
| 1.5SMC6.8CA | 1500 W PPPM, larger SMC (DO-214AB) package, 11.5 V VC at 130 A | Targeted at primary-side AC/DC input protection or telecom central office equipment | Choose for front-end mains or PoE port protection where energy levels exceed P4SMA capability |
Compared with SMBJ6.8CA and 1.5SMC6.8CA, the P4SMA6.8CA-E3/61 offers optimal space-constrained protection for board-level signal and low-power DC lines, balancing 400 W surge handling with minimal 2.54 mm pitch SMA footprint - ideal for dense consumer and automotive modules where layout real estate is limited.
Availability
P4SMA6.8CA-E3/61 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive sensor interface hardening, and telecom line driver safeguarding requiring stable component supply, RoHS compliance, and traceable sourcing.
Supply support for P4SMA6.8CA-E3/61 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, efficiency, and application-specific performance.
The P4SMA Series is engineered for robust transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and communications systems where consistent clamping, low leakage, and AEC-Q101 qualification matter.
FAQ
What is the breakdown voltage tolerance of P4SMA6.8CA-E3/61?
The P4SMA6.8CA-E3/61 has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, representing ±5% tolerance around the nominal 6.8 V rating. This tight distribution ensures consistent clamping behavior across production lots and supports reliable design margins in protection circuits where precise voltage thresholds are required.
Is P4SMA6.8CA-E3/61 RoHS-compliant and halogen-free?
Yes, the P4SMA6.8CA-E3/61 carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free versions, select the "M3" suffix variant (e.g., P4SMA6.8CA-M3/61), which meets IEC 61249-2-21 requirements while retaining identical electrical specs and packaging.
Does P4SMA6.8CA-E3/61 have AEC-Q101 qualification?
The base P4SMA6.8CA-E3/61 is commercial-grade and not AEC-Q101 qualified. However, Vishay offers AEC-Q101 qualified versions under ordering codes such as P4SMA6.8CAHE3_A/H - these include additional stress testing and traceability for automotive use. Always verify the full part number's qualification status via Vishay's official datasheet revision history.
What is the maximum clamping voltage of P4SMA6.8CA-E3/61 at rated peak pulse current?
The P4SMA6.8CA-E3/61 exhibits a maximum clamping voltage (VC) of 10.5 V when subjected to its rated 38.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals and represents the highest voltage imposed on the protected circuit during worst-case surge conditions.
Can P4SMA6.8CA-E3/61 be used in bidirectional signal lines like RS-485 or CAN?
Yes, the P4SMA6.8CA-E3/61 is explicitly designed for bidirectional applications, with symmetrical electrical characteristics in both polarities. Its 6.45–7.14 V breakdown and 10.5 V clamping make it suitable for protecting differential bus lines such as RS-485, CAN, and LIN - provided layout minimizes parasitic inductance and VC remains below receiver absolute maximum ratings.
P4SMA6.8CA-E3/61 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:
- -
- 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):
- 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)
P4SMA6.8CA-E3/61 FAQ
1.How can I place an order for P4SMA6.8CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA6.8CA-E3/61 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 P4SMA6.8CA-E3/61 reliable?
The price and inventory of P4SMA6.8CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA6.8CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA6.8CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA6.8CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA6.8CA-E3/61?
P4SMA6.8CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA6.8CA-E3/61 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 P4SMA6.8CA-E3/61?
For technical support, including P4SMA6.8CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA6.8CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA6.8CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA6.8CA-E3/61 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 P4SMA6.8CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA6.8CA-E3/61?
All P4SMA6.8CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA6.8CA-E3/61, 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 P4SMA6.8CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA6.8CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA6.8CA-E3/61 Tags
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