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Vishay General Semiconductor - Diodes Division P4SMA8.2A-E3/5A
- Part No.:
- P4SMA8.2A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA8.2A-E3/5A.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,020
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Product details
Overview
P4SMA8.2A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping inductive switching transients and ESD events. It features a 7.79 V minimum breakdown voltage (VBR), 7.02 V maximum stand-off voltage (VWM), 12.1 V 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 P4SMA8.2A-E3/5A datasheet, P4SMA8.2A-E3/5A pinout, P4SMA8.2A-E3/5A application, or P4SMA8.2A-E3/5A equivalent, key selection criteria include unidirectional polarity, 12.1 V clamping performance under 33.1 A surge, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
The P4SMA8.2A-E3/5A operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable reverse breakdown and fast response to transients (<1 ns). Its clamping action begins at VWM = 7.02 V and fully engages at VBR = 7.79–8.61 V (tested at 10 mA), limiting downstream voltage to ≤12.1 V during 400 W pulses.
Thermal performance is defined by RθJA = 120 °C/W (junction-to-ambient, free-air) and RθJL = 30 °C/W (junction-to-lead), supporting operation from –65 °C to +150 °C. The device meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes, though P4SMA8.2A-E3/5A itself is commercial-grade RoHS-compliant per JESD201 Class 2 whisker test.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.02 V - Maximum continuous reverse voltage before leakage exceeds 200 µA; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 7.79–8.61 V at 10 mA - Verified avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 12.1 V at 33.1 A - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for IC-level voltage tolerance. |
| PPPM | 400 W - Peak pulse power handling capability with 10/1000 µs waveform; enables robust protection against inductive kick and lightning surges. |
| IPPM | 33.1 A - Corresponding peak pulse current at VC; determines minimum trace width and PCB pad design for energy dissipation. |
| TJ max | +150 °C - Maximum junction temperature; supports high-temperature environments such as engine control units and power supplies. |
| Package | SMA (DO-214AC) - Standardized SMT outline with cathode band marking; compatible with JEDEC MS-013 and IPC-7351B footprint. |
Pinout & Package
SMA (DO-214AC) package: surface-mount, molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side reference in unidirectional TVS configuration; carries surge current to GND during clamping. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., I/O, power rail); blocks normal operation up to 7.02 V, then avalanches to clamp transients. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 12 V rails without cascading components. |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage (<200 µA at VWM) across temperature and lifetime. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
| AEC-Q101 qualified variants available | HE3/HM3 suffix versions meet automotive reliability requirements; P4SMA8.2A-E3/5A is commercial-grade but shares identical electrical specs. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), improving protection margin for CMOS inputs. |
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 ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output line and ground, clamping transients before they reach ADC input or transceiver ESD structure. Use Value: Limits voltage to ≤12.1 V during 33.1 A surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Shielding 24 V digital input modules in programmable logic controllers from inductive kickback caused by relay/solenoid switching. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt surge energy directly to chassis ground, reducing stress on optocoupler input stages. Use Value: Withstands 400 W pulses without degradation, enabling >100,000 switching cycles while maintaining VWM = 7.02 V isolation margin. |
| Consumer Power Adapter Input Stage | Telecom Ethernet PHY Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side control ICs and secondary-side synchronous rectifiers from line surges and cross-talk. IC Role / Device Role / Timing Role: Placed across bulk capacitor or gate drive lines to clamp voltage spikes induced by transformer leakage inductance. Use Value: Fast <1 ns response and 12.1 V clamping prevent false triggering of overvoltage protection circuits in SMPS controllers. |
Use Scenario: Guarding 10/100/1000BASE-T Ethernet PHYs against ESD (IEC 61000-4-2) and surge (IEC 61000-4-5) on RJ45 magnetics secondary side. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-PHY data line to suppress common-mode transients before differential receiver inputs. Use Value: Low capacitance (<100 pF typical at VWM) avoids signal integrity loss in 100 MHz+ Ethernet channels while delivering 400 W surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Higher VWM = 8.0 V, lower VC = 12.0 V at 34.4 A, same 400 W rating but SMB package (DO-214AA). | Slightly tighter clamping margin but larger footprint; requires PCB redesign due to 3.56 mm body width vs. SMA's 2.79 mm. | Select SMBJ8.0A only if board space allows wider package and higher stand-off voltage is needed for noise margin. |
| 1.5SMC8.2A | Same VWM/VBR/VC specs, but SMC (DO-214AB) package with 1.5 kW peak power rating and higher IPPM = 123 A. | Over-specified for 400 W use cases; introduces unnecessary thermal mass and cost where P4SMA8.2A-E3/5A's 33.1 A suffices. | Choose 1.5SMC8.2A only for systems requiring redundancy or future-proofing against higher-energy threats beyond IEC 61000-4-5 Level 4. |
Compared with SMBJ8.0A and 1.5SMC8.2A, the P4SMA8.2A-E3/5A delivers optimal balance of compact SMA footprint, precise 7.02 V stand-off, and verified 12.1 V clamping for cost-sensitive industrial and consumer designs where board area and thermal budget are constrained.
Availability
P4SMA8.2A-E3/5A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply designs requiring stable component supply, RoHS compliance, and SMT scalability.
Supply support for P4SMA8.2A-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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series was developed for high-volume surface-mount transient suppression in space-constrained applications, targeting automotive, industrial, and consumer electronics where consistent clamping performance and AEC-Q101-ready variants are essential.
FAQ
What is the maximum clamping voltage of the P4SMA8.2A-E3/5A under surge conditions?
The P4SMA8.2A-E3/5A has a maximum clamping voltage (VC) of 12.1 V when subjected to its rated peak pulse current of 33.1 A using the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and represents the upper limit of voltage seen by the protected circuit during transient events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream of the P4SMA8.2A-E3/5A.
Is the P4SMA8.2A-E3/5A suitable for automotive applications?
The P4SMA8.2A-E3/5A is a commercial-grade part with RoHS compliance and JESD201 Class 2 whisker resistance, but it is not AEC-Q101 qualified. For automotive use, Vishay offers the P4SMA8.2AHE3_A variant (with HE3 suffix), which shares identical electrical characteristics but adds AEC-Q101 qualification. Engineers must specify the HE3 or HM3 version explicitly when automotive reliability is required; the P4SMA8.2A-E3/5A remains appropriate for non-safety-critical consumer or industrial systems.
What does the "-E3/5A" suffix indicate in P4SMA8.2A-E3/5A?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability standards. The "/5A" specifies packaging: 7500 units per 13-inch diameter plastic tape-and-reel - optimized for high-speed pick-and-place assembly. This contrasts with "/61", which indicates 1800 units per 7-inch reel. Both formats share identical electrical and thermal specifications for the P4SMA8.2A-E3/5A.
How does the P4SMA8.2A-E3/5A compare to bidirectional TVS diodes like P4SMA8.2CA?
The P4SMA8.2A-E3/5A is unidirectional and intended for DC line protection where polarity is fixed (e.g., VCC-to-GND), offering lower leakage and sharper knee characteristics. In contrast, P4SMA8.2CA is bidirectional, suited for AC or floating signal lines (e.g., RS-485, audio), with symmetrical clamping in both directions. Their VBR, VWM, and VC values differ slightly due to internal structure - P4SMA8.2A-E3/5A has VWM = 7.02 V, while P4SMA8.2CA has VWM = 7.02 V per direction but double the ID limit per note (4) in the datasheet.
What PCB layout considerations apply to the P4SMA8.2A-E3/5A?
For optimal thermal and surge performance, the P4SMA8.2A-E3/5A should be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay document 88367. Short, wide traces to ground minimize inductance and reduce VC overshoot. Avoid thermal relief on pads to maximize heat dissipation, and ensure the cathode band aligns with silkscreen polarity marking to prevent reverse installation - a misoriented P4SMA8.2A-E3/5A will fail to clamp during positive transients.
P4SMA8.2A-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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA8.2A-E3/5A FAQ
1.How can I place an order for P4SMA8.2A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA8.2A-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 P4SMA8.2A-E3/5A reliable?
The price and inventory of P4SMA8.2A-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 P4SMA8.2A-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA8.2A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA8.2A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA8.2A-E3/5A?
P4SMA8.2A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA8.2A-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 P4SMA8.2A-E3/5A?
For technical support, including P4SMA8.2A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA8.2A-E3/5A requirements.
6.How does Aetrix verify that P4SMA8.2A-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA8.2A-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 P4SMA8.2A-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA8.2A-E3/5A?
All P4SMA8.2A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA8.2A-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 P4SMA8.2A-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA8.2A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA8.2A-E3/5A Tags
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