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Vishay General Semiconductor - Diodes Division P4SMA8.2A-M3/5A
- Part No.:
- P4SMA8.2A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA8.2A-M3/5A.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,717
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Product details
Overview
P4SMA8.2A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping transient overvoltages on power and signal lines. It features 7.79 V to 8.61 V breakdown voltage (VBR at 10 mA), 7.02 V maximum standoff voltage (VWM), 12.1 V clamping voltage (VC at 33.1 A), 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4SMA8.2A-M3/5A datasheet, P4SMA8.2A-M3/5A pinout, P4SMA8.2A-M3/5A application, or P4SMA8.2A-M3/5A equivalent, this device serves as a robust, halogen-free, RoHS-compliant protection solution for DC power rails, sensor interfaces, and MOSFET gate drivers where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.5), and stable thermal performance up to +150 °C junction temperature are required.
Technical Context
The P4SMA8.2A-M3/5A operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown characteristics and low incremental surge resistance. Its 10/1000 µs waveform rating delivers 400 W peak pulse power at TA = 25 °C, derated linearly above 25 °C per Fig. 2 in the datasheet.
Thermal design relies on its RθJA = 120 °C/W (typ.) and RθJL = 30 °C/W (typ.), requiring minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation. It meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance, supporting lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at 10 mA - defines precise avalanche onset window for repeatable clamping threshold |
| VWM | 7.02 V - maximum continuous reverse operating voltage before leakage exceeds 200 µA |
| VC at IPPM | 12.1 V at 33.1 A - clamped voltage during 400 W transient, limiting downstream stress to ≤12.1 V |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity under standard lightning/surge test waveform |
| IFSM | 40 A (8.3 ms half-sine) - single-event forward surge current rating for inrush or fault conditions |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive or industrial ambient |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm length, 4.50 mm width, 2.29 mm height |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, cathode indicated by a band on the body; terminals are anode and cathode, with cathode being the banded end for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to lower-potential side of protected line; enables forward conduction during overvoltage events on cathode-referenced rails |
| Cathode | Current exit point in forward bias; marked with band | Connected to higher-potential rail (e.g., VCC); reverse-biased during normal operation, avalanches when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems without external series impedance |
| Low clamping voltage (12.1 V @ 33.1 A) | Keeps protected ICs (e.g., microcontrollers, CAN transceivers) within absolute maximum ratings during transients |
| AEC-Q101 qualified (M3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant (M3) | Meets EU Directive 2011/65/EU and IPC-1752A material declarations for green manufacturing compliance |
| MSL Level 1, 260 °C peak reflow | Supports standard SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-supplied ECU power input exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Unidirectional TVS placed between VBAT and GND to clamp transients before LDO or DC/DC converter. Use Value: Clamps to 12.1 V while absorbing 400 W pulses, preventing damage to downstream 13.2 V-rated regulators and MCU power pins. |
Use Scenario: Analog output line of a pressure sensor in factory automation, subject to ESD (IEC 61000-4-2) and cable discharge events. IC Role / Device Role: TVS mounted at connector entry point, shunting transients from signal line to ground. Use Value: Sub-1 ns response and 12.1 V clamping protect 3.3 V ADC inputs and op-amp buffers without signal distortion. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Protection |
|
Use Scenario: High-side N-channel MOSFET gate drive circuit in motor control, vulnerable to Miller-induced voltage spikes. IC Role / Device Role: TVS across gate-to-source to suppress dv/dt-induced overshoot exceeding VGS(max). Use Value: 7.02 V VWM ensures no leakage during 5 V gate drive, while 12.1 V VC prevents gate oxide rupture at ±20 V rating. |
Use Scenario: -48 V DC input stage of telecom base station equipment subjected to lightning-induced surges on outdoor cabling. IC Role / Device Role: Primary unidirectional TVS on input rail, coordinated with upstream MOV and fuse. Use Value: 400 W rating and 12.1 V clamping allow coordination with secondary protection stages to meet GR-1089-CORE Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | 8.0 V VBR min (7.6–8.4 V), 7.0 V VWM, 12.0 V VC at 33.3 A, same SMA package | Slightly tighter VBR tolerance; identical power rating but marginally lower clamping | Select SMAJ8.0A if tighter VBR distribution is needed for precision clamping near 8.0 V rails |
| 1.5SMC8.2A | 8.2 V VBR (7.79–8.61 V), 7.02 V VWM, 12.1 V VC at 33.1 A, larger SMC (DO-214AB) package | Same electrical specs but 7.1 mm × 6.2 mm footprint vs. SMA's 5.3 mm × 4.5 mm; higher thermal mass | Choose 1.5SMC8.2A only when board layout allows larger pad area and higher thermal inertia is preferred |
Compared with SMAJ8.0A and 1.5SMC8.2A, the P4SMA8.2A-M3/5A offers halogen-free construction, AEC-Q101 qualification, and optimized footprint for space-constrained automotive modules-making it the preferred choice where regulatory compliance and miniaturization are prioritized over minor VBR tolerance or thermal budget flexibility.
Availability
P4SMA8.2A-M3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer power adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA8.2A-M3/5A 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 high-reliability, automotive-qualified, and green-material solutions.
The P4SMA Series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications-including automotive power electronics and industrial control systems-balancing low profile, high surge capability, and AEC-Q101 compliance.
FAQ
What is the breakdown voltage range of the P4SMA8.2A-M3/5A?
The P4SMA8.2A-M3/5A has a guaranteed breakdown voltage (VBR) range of 7.79 V to 8.61 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable overvoltage protection design for 8 V nominal rails.
Is the P4SMA8.2A-M3/5A suitable for automotive applications?
Yes, the P4SMA8.2A-M3/5A is AEC-Q101 qualified (indicated by the M3 suffix) and rated for operation from –65 °C to +150 °C junction temperature. Its halogen-free, RoHS-compliant construction and MSL Level 1 rating make it suitable for under-hood and cabin ECU designs requiring certified transient protection.
What does the "/5A" suffix mean in P4SMA8.2A-M3/5A?
The "/5A" suffix denotes the packaging configuration: 7500 units per 13-inch diameter plastic tape-and-reel. This large-volume reel format supports high-throughput SMT assembly and is commonly used in automotive and industrial production lines requiring extended run times without reel changeovers.
How does the clamping voltage of P4SMA8.2A-M3/5A compare to its breakdown voltage?
The P4SMA8.2A-M3/5A clamps to 12.1 V at its rated peak pulse current of 33.1 A, yielding a clamping ratio (VC/VBR(min)) of approximately 1.55. This low ratio ensures effective protection of 12 V-tolerant ICs while maintaining sufficient margin above the 7.02 V standoff voltage during normal operation.
Can P4SMA8.2A-M3/5A be used in bidirectional configurations?
No - the P4SMA8.2A-M3/5A is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the P4SMA8.2CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities and no polarity marking.
P4SMA8.2A-M3/5A 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-M3/5A FAQ
1.How can I place an order for P4SMA8.2A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA8.2A-M3/5A 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-M3/5A reliable?
The price and inventory of P4SMA8.2A-M3/5A 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-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA8.2A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA8.2A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA8.2A-M3/5A?
P4SMA8.2A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA8.2A-M3/5A 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-M3/5A?
For technical support, including P4SMA8.2A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA8.2A-M3/5A requirements.
6.How does Aetrix verify that P4SMA8.2A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA8.2A-M3/5A 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-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA8.2A-M3/5A?
All P4SMA8.2A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA8.2A-M3/5A, 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-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA8.2A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA8.2A-M3/5A Tags
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