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Vishay General Semiconductor - Diodes Division P4SMA8.2CA-E3/5A
- Part No.:
- P4SMA8.2CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA8.2CA-E3/5A.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,721
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Product details
Overview
P4SMA8.2CA-E3/5A 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 breakdown voltage (VBR min/max = 7.79–8.61 V at 10 mA), 7.02 V stand-off voltage (VWM), 12.1 V maximum clamping voltage (VC) at 33.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA8.2CA-E3/5A datasheet, P4SMA8.2CA-E3/5A pinout, P4SMA8.2CA-E3/5A application, or P4SMA8.2CA-E3/5A equivalent, key selection considerations include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.72), AEC-Q101 qualification eligibility (via HE3/HM3 variants), RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA8.2CA-E3/5A operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<200 µA at VWM), while its low incremental surge resistance enables rapid energy diversion during ESD or inductive switching events.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, supporting continuous power dissipation of 3.3 W at TA = 50 °C. It meets MSL Level 1 per J-STD-020 with 260 °C peak reflow tolerance and is rated for operation from −65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at IT = 10 mA - defines reliable conduction onset under transient stress |
| VWM | 7.02 V - maximum continuous reverse working voltage before leakage exceeds 200 µA |
| VC @ IPPM | 12.1 V at 33.1 A - clamped voltage during 400 W 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak transient power handling capacity under standardized surge waveform |
| IFSM | Not applicable - bidirectional device has no forward surge rating (unidirectional only) |
| Junction Temp Range | −65 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm × 4.50 mm footprint |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, 0.208" × 0.177" (5.28 mm × 4.50 mm) body, cathode band omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | One terminal of symmetrical avalanche junction; connects to protected line or ground reference |
| Cathode | Transient return path (bidirectional) | Second terminal of symmetrical avalanche junction; electrically identical to Anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concern |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems with margin |
| Low clamping ratio (VC/VWM = 1.72) | Minimizes overvoltage exposure to downstream ICs compared to higher-ratio TVS devices |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring reliability validation |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground, responding within <1 ns to transients. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs by limiting excursion to ≤12.1 V during 33.1 A surges. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against inductive kickback from solenoid/relay coils. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across input terminals, conducting only during overvoltage events. Use Value: Extends field reliability by absorbing 400 W surges without degradation, maintaining system uptime in factory automation. |
| Consumer Power Adapter EMI Filtering | Telecom Ethernet Port Surge Protection |
Use Scenario: Secondary-side transient suppression in AC/DC adapters for USB-C PD and fast-charging circuits. IC Role / Device Role / Timing Role: Clamping device across DC output rails to suppress switching noise and external surges. Use Value: Ensures compliance with IEC 62368-1 transient immunity requirements using compact SMA footprint. |
Use Scenario: Front-end protection for 10/100/1000BASE-T Ethernet PHY interfaces exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS pair (with matching units) on differential pairs, referenced to chassis ground. Use Value: Maintains signal integrity up to 100 MHz while meeting IEC 61000-4-5 10/700 µs surge test levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | Higher VWM (6.89 V), lower VC (12.0 V), same PPPM (600 W), larger SMB (DO-214AA) package | Preferred where higher surge margin or PCB space allows larger footprint | Select when 600 W rating and lower clamping voltage justify SMB size increase |
| 1.5SMC8.2CA | Same VBR/VWM/VC, higher PPPM (1500 W), larger SMC (DO-214AB) package, higher thermal mass | Suitable for high-energy industrial mains protection where 1500 W rating is required | Choose only if system-level surge testing demands >400 W capability and layout accommodates SMC |
Compared with SMBJ8.0CA and 1.5SMC8.2CA, the P4SMA8.2CA-E3/5A offers optimal balance of compact SMA footprint, verified 400 W surge handling, and cost-effective RoHS-compliant packaging - making it ideal for space-constrained consumer, industrial, and entry-level automotive designs where 400 W suffices.
Availability
P4SMA8.2CA-E3/5A is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive cabin sensor interfaces, and telecom Ethernet port protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA8.2CA-E3/5A 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The P4SMA Series was developed to deliver high-power, surface-mount transient protection for automotive, industrial, and consumer electronics - prioritizing low-profile packaging, AEC-Q101 readiness, and consistent clamping performance across temperature.
FAQ
What is the breakdown voltage tolerance for P4SMA8.2CA-E3/5A?
The P4SMA8.2CA-E3/5A has a specified breakdown voltage range of 7.79 V to 8.61 V at 10 mA test current, representing ±5% tolerance around the nominal 8.2 V rating. This tight VBR spread ensures predictable clamping onset across production lots and supports robust design margins in safety-critical protection circuits. The P4SMA8.2CA-E3/5A maintains this specification across its full operating temperature range.
Is P4SMA8.2CA-E3/5A suitable for automotive applications?
The base P4SMA8.2CA-E3/5A is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101 qualified versions under ordering codes P4SMA8.2CAHE3_A and P4SMA8.2CAHM3_A. These variants undergo extended reliability testing including temperature cycling, humidity bias, and high-temperature operating life - confirming suitability for automotive cabin and chassis applications. The P4SMA8.2CA-E3/5A itself is not AEC-Q101 certified.
What is the maximum clamping voltage of P4SMA8.2CA-E3/5A under surge conditions?
The P4SMA8.2CA-E3/5A delivers a maximum clamping voltage (VC) of 12.1 V when subjected to its rated 33.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on 5.0 mm × 5.0 mm copper pads and represents the worst-case voltage seen by protected circuitry during transient events. The P4SMA8.2CA-E3/5A maintains this clamping performance across its full operational temperature range.
Does P4SMA8.2CA-E3/5A have polarity markings?
No, the P4SMA8.2CA-E3/5A does not feature a cathode band or other polarity marking because it is a bidirectional TVS diode. Its symmetrical construction allows identical clamping behavior in both directions, eliminating orientation concerns during PCB assembly. This simplifies layout and reduces risk of misplacement - a key advantage over unidirectional variants like P4SMA8.2A, which require strict anode/cathode alignment. The P4SMA8.2CA-E3/5A is functionally identical at both terminals.
What is the thermal resistance of P4SMA8.2CA-E3/5A?
The P4SMA8.2CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured under standard JEDEC conditions with 5.0 mm × 5.0 mm copper pads. These values determine steady-state power derating above 50 °C ambient and influence short-duration surge survivability. For continuous operation, the P4SMA8.2CA-E3/5A supports 3.3 W dissipation at TA = 50 °C - a critical parameter for thermal design validation.
P4SMA8.2CA-E3/5A 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:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA8.2CA-E3/5A FAQ
1.How can I place an order for P4SMA8.2CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA8.2CA-E3/5A 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 P4SMA8.2CA-E3/5A reliable?
The price and inventory of P4SMA8.2CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA8.2CA-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA8.2CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA8.2CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA8.2CA-E3/5A?
P4SMA8.2CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA8.2CA-E3/5A 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 P4SMA8.2CA-E3/5A?
For technical support, including P4SMA8.2CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA8.2CA-E3/5A requirements.
6.How does Aetrix verify that P4SMA8.2CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA8.2CA-E3/5A 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 P4SMA8.2CA-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA8.2CA-E3/5A?
All P4SMA8.2CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA8.2CA-E3/5A, 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 P4SMA8.2CA-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA8.2CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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