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Vishay General Semiconductor - Diodes Division P4SMA8.2CAHE3/5A
- Part No.:
- P4SMA8.2CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA8.2CAHE3/5A.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,099
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Product details
Overview
P4SMA8.2CAHE3/5A 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 8.2 V standoff voltage (VWM), 9.1 V minimum breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use - deployed to protect MOSFETs and sensor signal lines in industrial control systems.
For engineers reviewing the P4SMA8.2CAHE3/5A datasheet, P4SMA8.2CAHE3/5A pinout, P4SMA8.2CAHE3/5A application, or P4SMA8.2CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, 12.1 V maximum clamping voltage at rated IPPM, RoHS-compliant AEC-Q101 qualification, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<200 µA at VWM), while the low incremental surge resistance supports fast transient response under 1 ns.
The P4SMA8.2CAHE3/5A delivers 400 W peak pulse power per 10/1000 µs waveform up to 25 °C, derating linearly above TA = 25 °C per Figure 2, with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W - confirming suitability for compact PCB layouts with minimal heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.02 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 7.79–8.61 V at 10 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 12.1 V at IPPM - Peak voltage seen by downstream components during 400 W transient; limits stress on ICs and MOSFETs. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Sustains high-energy surges common in inductive switching and ESD events. |
| ID (Reverse Leakage) | <200 µA at VWM - Minimizes standby power loss and avoids false triggering in low-current sensor interfaces. |
| TJ max. | 150 °C - Enables operation in under-hood automotive environments and industrial enclosures without thermal shutdown. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | Acts as cathode in one polarity, anode in reverse - enables symmetrical clamping across both terminals. |
| Cathode | Transient current exit (either direction) | Same physical terminal as Anode; bidirectional symmetry eliminates need for orientation during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; prevents parameter drift in harsh environments. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive electronics. |
| 400 W peak pulse rating | Handles IEC 61000-4-5 surge test levels up to 4 kV (line-to-earth) with margin. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive powertrain, body control, and ADAS sensor modules requiring long-term field reliability. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Limits clamped voltage to ≤12.1 V, preventing latch-up or gate oxide damage in 5 V/3.3 V sensor front-ends and CAN PHYs. |
Use Scenario: Shielding digital input/output channels of programmable logic controllers against inductive kickback from solenoids and relay coils. IC Role / Device Role / Timing Role: Parallel-connected TVS on each I/O line to absorb repetitive 400 W surges without degradation. Use Value: Maintains <200 µA leakage at 7.02 V, avoiding false state detection in 24 V DC input circuits with high-impedance sensing. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHYs and RS-485 transceivers in networked building automation devices exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protection on unshielded twisted-pair lines, preceding GDT or polymer-based secondary clamps. Use Value: Sub-1 ns response time and 12.1 V clamping enable compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) without signal distortion. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., washing machines, HVAC blowers). IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to clamp flyback energy during PWM switching. Use Value: Withstands 40 A IFSM (8.3 ms half-sine), tolerating repeated motor stall events without parametric shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | Higher VWM (6.4 V), lower VC (12.0 V), same 400 W rating but SMB package (larger footprint) | Requires PCB layout change; better thermal dissipation but less space-efficient | Select when higher surge repetition rate or board-level thermal management is prioritized over miniaturization. |
| 1.5KE8.2CA | Through-hole DO-201 package, 1500 W rating, higher VWM (7.1 V), VC = 12.3 V | Not SMT-compatible; suited for prototyping or legacy through-hole designs only | Choose only for manual assembly or where mechanical robustness outweighs automated manufacturing needs. |
Compared with SMBJ8.0CA and 1.5KE8.2CA, the P4SMA8.2CAHE3/5A offers optimal balance of AEC-Q101 qualification, SMA footprint, and 400 W clamping performance - making it the preferred choice for volume automotive and industrial SMT production where reliability, size, and process compatibility are jointly critical.
Availability
P4SMA8.2CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, AEC-Q101 compliance, and RoHS-conformant packaging.
Supply support for P4SMA8.2CAHE3/5A 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and communications equipment - delivering standardized TVS performance in compact, qualified surface-mount packages.
FAQ
What does the "CA" suffix indicate in P4SMA8.2CAHE3/5A?
The "CA" suffix denotes a bidirectional configuration, meaning the P4SMA8.2CAHE3/5A provides symmetrical transient suppression in both polarities - essential for protecting AC-coupled signals, differential buses like RS-485, or ungrounded sensor lines where voltage reversals occur. Unlike unidirectional variants (e.g., P4SMA8.2A), it has no cathode band marking and functions identically regardless of terminal orientation.
Is P4SMA8.2CAHE3/5A suitable for automotive applications?
Yes, the P4SMA8.2CAHE3/5A is AEC-Q101 qualified (confirmed by the "HE3" suffix), having passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per JESD22 standards. It is explicitly rated for under-hood and cabin-mounted ECUs, meeting reliability requirements for automotive sensor protection, body control modules, and infotainment interfaces.
What is the maximum clamping voltage of P4SMA8.2CAHE3/5A under surge conditions?
The P4SMA8.2CAHE3/5A exhibits a maximum clamping voltage (VC) of 12.1 V when subjected to its rated 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 protected circuitry during a 400 W transient event - critical for ensuring downstream 3.3 V or 5 V ICs remain within absolute maximum ratings.
How does the SMA (DO-214AC) package of P4SMA8.2CAHE3/5A compare to SMB or SMC alternatives?
The SMA package of P4SMA8.2CAHE3/5A measures 4.93 mm × 3.99 mm with a height of 2.29 mm - smaller than SMB (DO-214AA) and significantly more compact than SMC (DO-214AB). This enables higher board density in space-constrained applications such as automotive ADAS cameras or portable industrial sensors, while maintaining full 400 W surge capability and MSL Level 1 reflow compatibility.
Does P4SMA8.2CAHE3/5A require external heat sinking for 400 W pulse handling?
No, the P4SMA8.2CAHE3/5A achieves its 400 W peak pulse rating with no external heatsink when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - as specified in the Vishay datasheet. Its RθJA of 120 °C/W and RθJL of 30 °C/W ensure adequate thermal dissipation for single-event transients; however, repetitive surges above 0.01% duty cycle require derating per Figure 2.
P4SMA8.2CAHE3/5A 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 33.1A
- 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)
P4SMA8.2CAHE3/5A FAQ
1.How can I place an order for P4SMA8.2CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA8.2CAHE3/5A 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 P4SMA8.2CAHE3/5A reliable?
The price and inventory of P4SMA8.2CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA8.2CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA8.2CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA8.2CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA8.2CAHE3/5A?
P4SMA8.2CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA8.2CAHE3/5A 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 P4SMA8.2CAHE3/5A?
For technical support, including P4SMA8.2CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA8.2CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA8.2CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA8.2CAHE3/5A 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 P4SMA8.2CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA8.2CAHE3/5A?
All P4SMA8.2CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA8.2CAHE3/5A, 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 P4SMA8.2CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA8.2CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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