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Vishay General Semiconductor - Diodes Division P4SMA82AHE3/5A
- Part No.:
- P4SMA82AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82AHE3/5A.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,059
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Product details
Overview
P4SMA82AHE3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 77.9 V minimum breakdown voltage (VBR), 70.1 V maximum standoff voltage (VWM), 113 V clamping voltage (VC) at 3.5 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability - deployed in DC power rails of engine control units and sensor interfaces.
For engineers reviewing the P4SMA82AHE3/5A datasheet, P4SMA82AHE3/5A pinout, P4SMA82AHE3/5A application, or P4SMA82AHE3/5A equivalent, key selection criteria include clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 120 °C/W), unidirectional polarity marking, SMA (DO-214AC) package compatibility with automated placement, and compliance with UL 94 V-0 and JESD201 Class 2 whisker resistance.
Technical Context
The P4SMA82AHE3/5A operates as a silicon avalanche diode that enters controlled breakdown when reverse voltage exceeds VBR (77.9–86.1 V), limiting transient energy by shunting surge current to ground. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response (<1 ns), while the unidirectional configuration requires cathode-band orientation during PCB layout.
Thermally, it sustains 150 °C maximum junction temperature with 3.3 W steady-state power dissipation on infinite heatsink at 50 °C ambient; derating applies above 25 °C per Figure 2. The device meets MSL Level 1 (260 °C reflow peak) and supports repetitive 0.01% duty-cycle surges up to 400 W below 91 V - consistent with IEC 61000-4-5 surge immunity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V - defines precise voltage threshold at which avalanche conduction begins under 1 mA test current; critical for margin-based protection design. |
| VWM | 70.1 V - maximum continuous reverse operating voltage before significant leakage; sets upper limit for normal-mode DC bias. |
| VC @ IPPM | 113 V at 3.5 A - clamped voltage during 10/1000 µs transient; determines worst-case stress on downstream ICs. |
| PPPM | 400 W - peak pulse power handling capability; enables protection against high-energy surges like ISO 7637-2 Pulse 5a. |
| IFSM | 40 A - non-repetitive forward surge rating (8.3 ms half-sine); supports inrush current tolerance in power-up scenarios. |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments without thermal shutdown. |
| RθJA | 120 °C/W - thermal resistance junction-to-ambient; informs required copper pad area (0.2" × 0.2") for safe power dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. Cathode identified by black band; polarity must be observed in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to protected line (e.g., 12 V rail); reverse-biased during transient events. |
| Cathode | Avalanche conduction path / Ground reference | Connected to system ground or low-impedance return; carries full surge current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics; supports PPAP documentation and long-term reliability requirements. |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA), and resistance to humidity-induced degradation over 15+ year service life. |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns; peak reflow temperature up to 260 °C supported. |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical automotive and industrial systems meeting IEC 60664-1 insulation coordination. |
| 400 W peak pulse power | Meets ISO 7637-2 Level IV (50 V surge) and IEC 61000-4-5 2 kV/12 Ω test conditions without failure or parameter shift. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control modules (ECMs) from load-dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and LDO regulator input to clamp surges before they reach sensitive analog/digital ICs. Use Value: Limits peak voltage to ≤113 V, preventing latch-up or permanent damage to microcontrollers and CAN transceivers operating at 5 V or 3.3 V. |
Use Scenario: Safeguarding RS-485 communication lines in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS mounted differential across A/B bus lines with GND reference to suppress common-mode transients up to ±30 kV contact ESD. Use Value: Clamps sub-100 ns ESD events within 1 ns response time, preserving signal integrity and preventing false triggering in precision ADC front-ends. |
| Consumer DC Adapter Input Protection | Telecom Power Supply Surge Suppression |
Use Scenario: Input-stage protection for USB-C PD adapters subjected to lightning-induced surges on AC-DC secondary side. IC Role / Device Role / Timing Role: Unidirectional TVS placed after rectifier but before primary-side controller to absorb residual transients escaping Y-cap filtering. Use Value: Handles 400 W pulses without thermal runaway, maintaining <1 µA leakage at 70.1 V standby to avoid no-load power loss penalties. |
Use Scenario: Front-end protection for PoE-powered network switches experiencing induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: TVS integrated into DC feed circuitry upstream of DC-DC converters to prevent overvoltage propagation during cable fault events. Use Value: Withstands repetitive 300 W surges (duty cycle 0.01%) at elevated ambient temperatures, ensuring uptime in outdoor telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A-E3/52 | Higher VWM (68.4 V), lower VC (125 V), same SMA package but SMB (DO-214AA) footprint - requires PCB redesign. | Designed for broader industrial use; lacks AEC-Q101 qualification and automotive traceability. | Select when higher clamping margin is acceptable and automotive qualification is not required. |
| 1.5SMC82A-E3/57 | Larger SMC (DO-214AB) package, identical VBR/VC specs, 1500 W peak power - physically incompatible with SMA land pattern. | Targeted at high-energy industrial surge protection where board space permits larger footprint. | Choose only if board layout allows SMC pad revision and higher surge energy handling is mandatory. |
Compared with P4SMA82AHE3/5A, SMBJ80A-E3/52 offers tighter VWM tolerance but no automotive qualification, while 1.5SMC82A-E3/57 delivers 3.75× higher pulse power at the cost of incompatible packaging - making P4SMA82AHE3/5A the optimal choice for space-constrained, AEC-Q101–mandated automotive designs.
Availability
P4SMA82AHE3/5A is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface protection, and telecom DC distribution requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for P4SMA82AHE3/5A 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4SMA Series is engineered specifically for surface-mount transient suppression in harsh environments, emphasizing AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of P4SMA82AHE3/5A and how does it protect downstream circuits?
The P4SMA82AHE3/5A has a maximum clamping voltage (VC) of 113 V at 3.5 A peak pulse current (10/1000 µs waveform). This value represents the highest voltage seen across the device during a transient event - directly limiting stress on connected ICs, regulators, or transceivers. Because P4SMA82AHE3/5A clamps rapidly (<1 ns), it prevents voltage overshoot beyond this threshold, ensuring protected components remain within their absolute maximum ratings even during severe surges like ISO 7637-2 load dump.
Is P4SMA82AHE3/5A suitable for automotive applications, and what qualifications does it hold?
Yes, P4SMA82AHE3/5A is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation (Document Number 88367, Revision 09-Jan-2024). It meets automotive reliability requirements including temperature cycling, humidity testing, and mechanical shock - making it appropriate for engine control units, body control modules, and ADAS sensor power supplies where failure modes must be rigorously controlled.
What is the standoff voltage (VWM) of P4SMA82AHE3/5A, and why is it important for circuit design?
The standoff voltage (VWM) of P4SMA82AHE3/5A is 70.1 V - the maximum continuous reverse voltage the device can block without exceeding 1 µA leakage current. This parameter is critical because it must exceed the system's normal operating voltage (e.g., 12 V or 24 V automotive rails) with sufficient margin to avoid false triggering during ripple or transients. For P4SMA82AHE3/5A, the 70.1 V VWM provides >2.9× margin over a nominal 24 V system, ensuring stable operation under all expected conditions.
Does P4SMA82AHE3/5A have a bidirectional variant, and how does polarity affect its use?
No - P4SMA82AHE3/5A is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA82CA). Polarity matters critically: the cathode must connect to ground or the lower-potential node, while the anode connects to the line being protected. Reversing polarity renders P4SMA82AHE3/5A ineffective for reverse transients and may cause forward conduction during normal operation.
What package type does P4SMA82AHE3/5A use, and what are its mounting requirements?
P4SMA82AHE3/5A uses the SMA (DO-214AC) surface-mount package - a low-profile, rectangular plastic case with gull-wing leads. Per Vishay's datasheet, it requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated 400 W pulse power handling. The device is MSL Level 1, supporting standard reflow profiles up to 260 °C peak, and features matte tin-plated leads compliant with J-STD-002 solderability standards.
P4SMA82AHE3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA82AHE3/5A FAQ
1.How can I place an order for P4SMA82AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82AHE3/5A 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 P4SMA82AHE3/5A reliable?
The price and inventory of P4SMA82AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA82AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82AHE3/5A?
P4SMA82AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82AHE3/5A 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 P4SMA82AHE3/5A?
For technical support, including P4SMA82AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82AHE3/5A requirements.
6.How does Aetrix verify that P4SMA82AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA82AHE3/5A 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 P4SMA82AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA82AHE3/5A?
All P4SMA82AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82AHE3/5A, 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 P4SMA82AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA82AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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