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Vishay General Semiconductor - Diodes Division P4SMA82CAHE3/5A
- Part No.:
- P4SMA82CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82CAHE3/5A.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,999
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Product details
Overview
P4SMA82CAHE3/5A from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients across signal and power lines. It features a 70.1 V standoff voltage (VWM), 77.9–86.1 V breakdown voltage (VBR) at 1 mA, 113 V maximum clamping voltage (VC) at 3.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line receivers.
For engineers reviewing the P4SMA82CAHE3/5A datasheet, P4SMA82CAHE3/5A pinout, P4SMA82CAHE3/5A application, or P4SMA82CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal derating behavior above 25 °C ambient.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding VBR, it avalanches to divert surge current away from downstream circuitry while maintaining VC ≤ 113 V. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at VWM), and its bidirectional symmetry enables use on AC-coupled or floating lines without polarity concerns.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, with derated peak power above TA = 25 °C per Fig. 2. The 150 °C max junction temperature and MSL Level 1 (260 °C reflow) support automotive under-hood and industrial control environments requiring robust solderability and long-term reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 70.1 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 77.9–86.1 V at 1 mA - Voltage range where avalanche conduction initiates; tight tolerance supports precise protection thresholds |
| VC (Clamping) | 113 V at IPPM = 3.5 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream ICs |
| PPPM | 400 W (10/1000 µs) - Surge energy handling capacity; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) line transients |
| ID (Leakage) | <1 µA at VWM - Negligible standby power loss and signal distortion in high-impedance sensor or data lines |
| TJ max | 150 °C - Enables operation in under-hood automotive or enclosed industrial enclosures without forced cooling |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TC, and ESD |
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. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | One terminal of symmetrical PN junction; accepts surge current regardless of voltage polarity |
| Cathode | Transient current exit (either polarity) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or return rail during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled, differential, or floating signal paths without external polarity management |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, high-temperature operating life, and ESD robustness |
| 400 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 1 kV open-circuit / 0.5 kA short-circuit |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., EFT bursts), improving protection margin |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with automated assembly using 260 °C peak profile |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS diode placed at connector interface to clamp transients before they reach signal conditioning or communication ICs. Use Value: Prevents latch-up or permanent damage to automotive-grade microcontrollers and transceivers under ISO 7637-2 Pulse 1/2a/5a conditions. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Bidirectional clamping element across input terminals to limit voltage excursions during surge events. Use Value: Maintains functional safety integrity by ensuring input stage remains within absolute maximum ratings during 1 kV/500 A surge tests per IEC 61000-4-5. |
| Telecom Line Receiver Protection | Consumer USB/UART Interface Protection |
|
Use Scenario: Shielding RS-485/RS-232 transceivers in base station backhaul equipment from lightning-induced common-mode surges on long cable runs. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on differential line pairs, working in concert with common-mode chokes. Use Value: Limits clamped voltage to ≤113 V, preserving transceiver survival under 10/1000 µs surges up to 400 W without degrading signal integrity. |
Use Scenario: Adding robust ESD and surge immunity to USB 2.0 D+/D− or UART TX/RX lines in smart home hubs and portable medical devices. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector to absorb ±15 kV contact ESD (IEC 61000-4-2) and low-energy surges. Use Value: Achieves system-level ESD pass without signal attenuation or timing skew due to sub-100 pF junction capacitance at VWM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Higher VWM (72.2 V), higher VC (125 V at 3.2 A), same SMA footprint but larger SMB package (DO-214AA) | Lower power density (300 W PPPM); requires PCB layout change due to larger body and pad dimensions | Select when higher clamping margin is acceptable and board space allows SMB package |
| SMCJ85CA | Same VWM/VC specs, but SMC (DO-214AB) package with 1500 W PPPM rating and higher thermal mass | Designed for higher-energy surges (e.g., IEC 61000-4-5 Level 4); incompatible pin-to-pin with SMA | Choose for mission-critical industrial systems needing >1000 W surge handling and enhanced thermal stability |
Compared with P4SMA82CAHE3/5A, SMBJ85CA offers lower cost but reduced surge robustness and larger footprint, while SMCJ85CA delivers superior energy handling at the expense of board area and assembly compatibility - making P4SMA82CAHE3/5A optimal for space-constrained AEC-Q101-compliant designs requiring 400 W balance.
Availability
P4SMA82CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line receiver circuits requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P4SMA82CAHE3/5A 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 reliability, efficiency, and application-specific optimization.
The P4SMA Series targets surface-mount transient suppression in automotive, industrial, and communications systems - engineered for high surge immunity, low leakage, and seamless integration into automated SMT lines.
FAQ
What does the "CA" suffix indicate in P4SMA82CAHE3/5A?
The "CA" suffix denotes a bidirectional configuration: the P4SMA82CAHE3/5A contains two opposing avalanche diodes in series, enabling symmetrical clamping for AC signals or floating lines. Unlike unidirectional variants (e.g., P4SMA82A), it has no cathode band marking and conducts equally in both polarities - critical for protecting differential buses like RS-485 or transformer-coupled interfaces.
Is P4SMA82CAHE3/5A qualified for automotive applications?
Yes, P4SMA82CAHE3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation (Revision 09-Jan-2024, Doc. #88367). This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and ESD robustness - validating its suitability for under-hood and chassis-mounted automotive electronics where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of P4SMA82CAHE3/5A under surge conditions?
The maximum clamping voltage (VC) of P4SMA82CAHE3/5A is 113 V, measured at a peak pulse current (IPPM) of 3.5 A with a 10/1000 µs waveform. This value represents the worst-case voltage imposed on protected circuitry during standardized surge events and is guaranteed across the full operating temperature range per Vishay's electrical characteristics table.
How does the HE3 suffix affect the P4SMA82CAHE3/5A specification?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. It distinguishes P4SMA82CAHE3/5A from commercial-grade E3 variants and confirms compliance with automotive reliability and environmental requirements - essential for Tier 1 supplier BOMs and PPAP submissions.
Can P4SMA82CAHE3/5A be used in place of a unidirectional TVS like P4SMA82A?
No - P4SMA82CAHE3/5A is bidirectional and lacks polarity marking, while P4SMA82A is unidirectional with a cathode band. Substituting them requires circuit review: P4SMA82CAHE3/5A may be used on AC or floating nodes, but cannot replace P4SMA82A in DC-biased applications where forward conduction must be blocked. Always verify biasing and clamping directionality in the target schematic before substitution.
P4SMA82CAHE3/5A 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):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- 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)
P4SMA82CAHE3/5A FAQ
1.How can I place an order for P4SMA82CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82CAHE3/5A 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 P4SMA82CAHE3/5A reliable?
The price and inventory of P4SMA82CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA82CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82CAHE3/5A?
P4SMA82CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82CAHE3/5A 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 P4SMA82CAHE3/5A?
For technical support, including P4SMA82CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA82CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA82CAHE3/5A 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 P4SMA82CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA82CAHE3/5A?
All P4SMA82CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82CAHE3/5A, 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 P4SMA82CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA82CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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