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Vishay General Semiconductor - Diodes Division P4SMA82A-E3/61
- Part No.:
- P4SMA82A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82A-E3/61.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,513
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Product details
Overview
P4SMA82A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 77.9 V minimum breakdown voltage (VBR), 70.1 V standoff voltage (VWM), 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA82A-E3/61 datasheet, P4SMA82A-E3/61 pinout, P4SMA82A-E3/61 application, or P4SMA82A-E3/61 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped overvoltage protection device, leveraging an avalanche breakdown mechanism to divert transient energy away from sensitive downstream circuitry. Its glass-passivated junction ensures stable reverse leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), critical for suppressing ESD and inductive switching spikes.
The device is rated for 400 W peak pulse power (derated to 300 W above 91 V), with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes, though P4SMA82A-E3/61 is commercial-grade RoHS-compliant per JESD201 Class 2 whisker test.
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, min) | 77.9 V - Minimum voltage at which avalanche conduction begins at 1 mA test current; ensures reliable triggering |
| VC (Clamping, max) | 113 V - Maximum voltage across device during 3.5 A 10/1000 µs transient; determines protected circuit's voltage stress limit |
| PPPM | 400 W - Peak pulse power handling capability under standard 10/1000 µs waveform; defines surge energy absorption capacity |
| IPPM | 3.5 A - Peak pulse current corresponding to VC; used to size PCB trace width and pad thermal mass |
| TJ max | 150 °C - Maximum allowable junction temperature; constrains ambient operating range and power derating above 25 °C |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs heatsinking requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode (unbanded end) | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) without derating on standard PCB pads |
| Glass passivated junction | Ensures stable leakage performance (<1 µA at VWM) and long-term reliability under thermal cycling |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk |
| Low profile SMA package | Reduces board space vs. DO-15; compatible with high-density layouts and automated pick-and-place equipment |
| Avalanche response time <1 ns | Clamps transients faster than typical microcontroller I/O pin ESD tolerance, preventing latch-up or damage |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protects 24 V DC input rails in PLC modules from load dump and inductive kickback transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp positive-going surges. Use Value: Limits transient voltage to ≤113 V, keeping downstream DC-DC converters and microcontrollers within absolute maximum ratings. |
Use Scenario: Shields LIN bus or analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal line to ground, activated only during >77.9 V excursions. Use Value: Prevents sensor IC latch-up by clamping 8 kV contact ESD pulses within nanoseconds while maintaining <1 µA leakage at 24 V operation. |
| Telecom Line Card Surge Protection | Consumer Device USB Port Protection |
Use Scenario: Guards Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on 48 V intermediate bus, coordinated with upstream fuses and secondary TVS arrays. Use Value: Absorbs 400 W transient energy without failure, enabling compliance with ITU-T K.20/21 immunity standards. |
Use Scenario: Added to VBUS line of USB-C ports in smart speakers and displays to meet IEC 61000-4-2 Level 4 (15 kV air) ESD requirements. IC Role / Device Role / Timing Role: Fast-acting unidirectional suppressor between VBUS and ground, placed adjacent to connector. Use Value: Clamps ESD events to <113 V within <1 ns, preventing damage to USB PD controllers and port power switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A (Bourns) | Same VWM (68.4 V), higher VC (129 V), SMB package (larger footprint) | Higher clamping voltage reduces protection margin; larger package limits high-density designs | Select when board layout allows SMB footprint and system can tolerate 16 V higher clamping voltage |
| 1.5SMC82A (ON Semiconductor) | Identical VWM/VBR/VC, same SMA package, but 1.5 kW peak power rating (10/1000 µs) | Higher power rating supports longer-duration transients but requires larger thermal pad area | Choose when surge duration exceeds 1 ms or when operating near thermal limits on minimal copper |
Compared with P4SMA82A-E3/61, SMBJ80A offers higher surge current headroom but sacrifices clamping precision and board space efficiency, while 1.5SMC82A provides greater energy handling at the cost of stricter thermal management and identical electrical protection thresholds.
Availability
P4SMA82A-E3/61 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive sensor interface hardening, telecom line card surge suppression, and consumer USB port ESD mitigation requiring stable component supply and full traceability.
Supply support for P4SMA82A-E3/61 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, power efficiency, and automotive-grade qualification.
The P4SMA Series was developed for cost-effective, high-volume surface-mount transient suppression in commercial and industrial systems where compact size, automated assembly, and consistent clamping performance are essential design requirements.
FAQ
What is the polarity configuration of the P4SMA82A-E3/61?
The P4SMA82A-E3/61 is a unidirectional Transient Voltage Suppressor. Its cathode is marked with a band on the SMA (DO-214AC) package body, and it conducts avalanche current only when the cathode is at a higher potential than the anode - making it suitable for protecting positive-rail circuits against overvoltage events. This polarity must be observed during PCB layout to ensure correct clamping behavior.
Does the P4SMA82A-E3/61 meet automotive qualification standards?
The P4SMA82A-E3/61 itself is a commercial-grade RoHS-compliant part and is not AEC-Q101 qualified. However, Vishay offers automotive variants under the P4SMA82AHE3_A ordering code (with HE3 suffix), which carry full AEC-Q101 qualification. Engineers requiring automotive use must specify the HE3 or HM3 suffix versions - the P4SMA82A-E3/61 is intended for industrial and consumer applications.
What is the maximum clamping voltage of the P4SMA82A-E3/61 under standard test conditions?
The P4SMA82A-E3/61 has a maximum clamping voltage (VC) of 113 V when subjected to its rated peak pulse current of 3.5 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on 0.2" × 0.2" copper pads and represents the upper voltage limit imposed on protected circuitry during transient events.
How does the thermal resistance of the P4SMA82A-E3/61 affect its power derating?
The P4SMA82A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W on standard 0.2" × 0.2" copper pads. As ambient temperature rises above 25 °C, its peak pulse power rating must be linearly derated - for example, at 75 °C ambient, maximum allowable PPPM drops to approximately 200 W. This derating curve is defined in Figure 2 of the Vishay datasheet 88367.
Can the P4SMA82A-E3/61 be used in bidirectional signal line protection?
No - the P4SMA82A-E3/61 is strictly unidirectional and unsuitable for bidirectional signal lines such as RS-485 or CAN. For bidirectional protection, Vishay specifies CA-suffix parts like P4SMA82CA. Using P4SMA82A-E3/61 on AC-coupled or dual-polarity signals would result in forward conduction during negative half-cycles, causing malfunction or damage. Always match polarity type to signal topology.
P4SMA82A-E3/61 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA82A-E3/61 FAQ
1.How can I place an order for P4SMA82A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82A-E3/61 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 P4SMA82A-E3/61 reliable?
The price and inventory of P4SMA82A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA82A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82A-E3/61?
P4SMA82A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82A-E3/61 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 P4SMA82A-E3/61?
For technical support, including P4SMA82A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82A-E3/61 requirements.
6.How does Aetrix verify that P4SMA82A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA82A-E3/61 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 P4SMA82A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA82A-E3/61?
All P4SMA82A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82A-E3/61, 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 P4SMA82A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA82A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA82A-E3/61 Tags
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