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Vishay General Semiconductor - Diodes Division P4SMA68CAHE3/5A
- Part No.:
- P4SMA68CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68CAHE3/5A.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,200
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Product details
Overview
P4SMA68CAHE3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 92 V maximum clamping voltage (VC) at 4.3 A peak pulse current (IPPM), and 400 W peak pulse power rating with a 10/1000 µs waveform - suitable for protecting automotive sensor interfaces and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the P4SMA68CAHE3/5A datasheet, P4SMA68CAHE3/5A pinout, P4SMA68CAHE3/5A application, or P4SMA68CAHE3/5A equivalent, this part delivers AEC-Q101 qualification, SMA (DO-214AC) package compatibility, bidirectional surge suppression, and RoHS-compliant construction - critical for automotive-grade board-level transient protection where reliability and standardized mounting are required.
Technical Context
The P4SMA68CAHE3/5A operates as a bidirectional avalanche diode, symmetrically clamping voltage excursions above ±92 V in either polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM = 58.1 V), while its MSL Level 1 rating supports lead-free reflow up to 260 °C without popcorn failure.
Thermally, it exhibits RθJA = 120 °C/W (junction-to-ambient) and RθJL = 30 °C/W (junction-to-lead), enabling reliable operation up to TJ = +150 °C. The device sustains repetitive 400 W pulses at ≤0.01% duty cycle when mounted on 5.0 mm × 5.0 mm copper pads, with derating applied above 25 °C ambient per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 64.6–71.4 V at 1.0 mA test current - defines precise clamping onset threshold for bidirectional overvoltage events |
| Stand-off Voltage VWM | 58.1 V maximum - ensures no conduction during normal 56 V nominal system operation (e.g., 48 V automotive bus) |
| Clamping Voltage VC | 92 V at 4.3 A IPPM - limits downstream IC voltage stress during 10/1000 µs transients |
| Peak Pulse Power PPPM | 400 W (10/1000 µs waveform) - supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges |
| Operating Temperature | -65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, compatible with J-STD-002 solderability and JESD 22-B102 whisker testing. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity event) | Conducts during negative-going surges; forms symmetrical clamping path with cathode |
| Cathode | Transient current entry (positive polarity event) | Conducts during positive-going surges; completes bidirectional clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power | Withstands high-energy transients common in 12/24/48 V automotive and industrial power rails |
| AEC-Q101 qualification | Validates reliability for automotive control units, ADAS sensors, and body electronics |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage across temperature and lifetime |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN transceiver I/O pins and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed directly at connector or IC pad to clamp fast-rising transients before they reach sensitive input circuitry. Use Value: Limits voltage to ≤92 V during 10/1000 µs surges, preventing latch-up or gate oxide damage in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 4–20 mA current-loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on terminal blocks and signal conditioning PCBs, operating in parallel with input filters. Use Value: Absorbs up to 400 W of surge energy while maintaining <1.0 µA leakage at 58.1 V, preserving measurement accuracy during normal operation. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY magnetics, RS-485 transceivers, and PoE-powered devices from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary gas discharge tube (GDT) or polymer PTC, providing low-clamp refinement. Use Value: Clamps residual transients to 92 V within nanoseconds, meeting IEC 61000-4-5 Level 3 (2 kV line-earth) requirements. |
Use Scenario: Suppressing commutation spikes from brushed DC motors and solenoids in washing machines, HVAC actuators, and power tools. IC Role / Device Role / Timing Role: Snubber-style TVS across motor terminals or flyback diode replacement for faster response than standard rectifiers. Use Value: Responds in <1 ps to limit inductive kick to 92 V, reducing EMI and preventing MOSFET drain-source avalanche failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Higher VWM = 64 V, lower VC = 103 V at 3.9 A, same SMA package but 600 W PPPM rating | Designed for higher-energy surges; less precise clamping near 68 V nominal systems | Select when higher pulse power margin is needed and 103 V clamping is acceptable |
| 1.5KE68CA | Through-hole DO-201 package, 68 V VBR, 118 V VC at 3.4 A, 1500 W PPPM | Not surface-mountable; suited for prototyping or high-power legacy designs with manual assembly | Choose only if board redesign for SMT is not feasible and through-hole mounting is mandated |
Compared with SMBJ64CA and 1.5KE68CA, the P4SMA68CAHE3/5A offers tighter VBR tolerance (±5%), lower leakage (<1.0 µA), AEC-Q101 qualification, and optimized SMT manufacturability - making it the preferred choice for production automotive and industrial modules requiring verified reliability and automated placement.
Availability
P4SMA68CAHE3/5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC signal conditioning, and telecom line card protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for P4SMA68CAHE3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P4SMA series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications - delivering consistent clamping performance across automotive, industrial, and communications markets.
FAQ
What is the exact breakdown voltage range for P4SMA68CAHE3/5A?
The P4SMA68CAHE3/5A has a guaranteed breakdown voltage (VBR) range of 64.6 V to 71.4 V at a test current of 1.0 mA, measured per ANSI/IEEE C62.35 standards. This specification is confirmed in the Vishay P4SMA datasheet (Document Number: 88367, Revision: 09-Jan-2024) and applies to the bidirectional variant. The P4SMA68CAHE3/5A maintains this tolerance across its qualified operating temperature range.
Is P4SMA68CAHE3/5A suitable for automotive applications?
Yes, the P4SMA68CAHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It passes stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - validating its suitability for engine control units, ADAS sensors, and body electronics where reliability under thermal and electrical stress is mandatory.
What does the "/5A" suffix indicate in P4SMA68CAHE3/5A?
The "/5A" suffix denotes the packaging configuration: 13-inch diameter plastic tape and reel containing 7500 units. This format supports high-volume SMT assembly lines using standard 13″ feeder systems. The base part P4SMA68CAHE3 is identical electrically and mechanically; only the packaging differs from variants like /61 (7″ reel, 1800 units).
How does P4SMA68CAHE3/5A compare to unidirectional P4SMA68AHE3/5A in circuit implementation?
The P4SMA68CAHE3/5A is bidirectional and lacks polarity marking, allowing direct placement across AC-coupled or floating nodes without orientation concerns. In contrast, the unidirectional P4SMA68AHE3/5A requires correct cathode alignment and only protects against positive transients unless paired with a second device. For differential signal lines or dual-rail supplies, the P4SMA68CAHE3/5A reduces component count and layout complexity.
What is the maximum clamping voltage of P4SMA68CAHE3/5A under standard test conditions?
The P4SMA68CAHE3/5A has a maximum clamping voltage (VC) of 92 V at a peak pulse current (IPPM) of 4.3 A, tested with a 10/1000 µs waveform per IEC 61000-4-5. This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standards and represents the upper bound of voltage seen by protected circuitry during worst-case surge events.
P4SMA68CAHE3/5A 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:
- 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):
- 4.3A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA68CAHE3/5A FAQ
1.How can I place an order for P4SMA68CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68CAHE3/5A 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 P4SMA68CAHE3/5A reliable?
The price and inventory of P4SMA68CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA68CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68CAHE3/5A?
P4SMA68CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68CAHE3/5A 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 P4SMA68CAHE3/5A?
For technical support, including P4SMA68CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA68CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA68CAHE3/5A 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 P4SMA68CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA68CAHE3/5A?
All P4SMA68CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68CAHE3/5A, 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 P4SMA68CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA68CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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