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Vishay General Semiconductor - Diodes Division P4SMA82AHM3_A/H
- Part No.:
- P4SMA82AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82AHM3_A/H.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,690
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Product details
Overview
P4SMA82AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 82 V breakdown voltage (VBR = 77.9–86.1 V at 1 mA), 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 - suitable for protecting automotive-grade MOSFETs and sensor interfaces against load dump and inductive switching events.
For engineers reviewing the P4SMA82AHM3_A/H datasheet, P4SMA82AHM3_A/H pinout, P4SMA82AHM3_A/H application, or P4SMA82AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), low thermal resistance (RθJL = 30 °C/W), MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
The P4SMA82AHM3_A/H employs a glass-passivated silicon junction optimized for fast response (<1 ns) to transient overvoltages and low incremental surge resistance to maintain tight clamping during high-current events. Its unidirectional polarity enables integration into DC-biased circuits where reverse conduction must be blocked while allowing forward surge current up to 40 A (8.3 ms half-sine).
Thermally, it is rated for operation from −65 °C to +150 °C junction temperature, with RθJA = 120 °C/W on standard 0.2" × 0.2" copper pads and RθJL = 30 °C/W to leads - enabling reliable power dissipation of 3.3 W at 50 °C ambient. The device meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise voltage threshold at which avalanche conduction begins, critical for matching system overvoltage tolerance margins. |
| VWM | 70.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets safe DC bias limit for protected line. |
| VC @ IPPM | 113 V at 3.5 A - clamped voltage during 10/1000 µs surge; determines worst-case stress on downstream ICs or MOSFETs. |
| PPPM | 400 W - peak pulse power handling capability; supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine); validates survivability during power rail fault conditions. |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMA (DO-214AC) - standardized SMT footprint compatible with automated placement; 5.28 mm × 4.50 mm outline with cathode band marking. |
Pinout & Package
SMA (DO-214AC) surface-mount package with molded epoxy body, matte tin-plated leads, and visible cathode band indicating the cathode terminal. Designed for reflow soldering per J-STD-020 MSL Level 1 (peak 260 °C), with thermal pad layout per Vishay recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper areas per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference in unidirectional TVS configuration. | Enables clamping of positive transients when cathode is tied to protected line; must be routed to lowest-impedance return path. |
| Cathode | Current exit point in forward bias; marked by band; connected to protected line (e.g., 12 V rail or sensor output). | Determines polarity of protection - only conducts during overvoltage events above VBR, blocking normal reverse leakage below VWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors - ensures reliability under temperature cycling, vibration, and humidity stress. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental compliance requirements without compromising thermal or electrical performance; supports sustainable manufacturing. |
| 400 W peak pulse power (10/1000 µs) | Provides margin against high-energy transients such as load dump (ISO 16750-2) and inductive kickback in 12 V/24 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected components - e.g., keeps 82 V-rated TVS clamping at just 113 V, preserving MOSFET VDSS headroom. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking requirement and supports standard lead-free assembly processes - reduces production cost and yield risk. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply lines in engine control modules against load dump transients (up to 60 V, 400 ms duration) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO input to clamp overvoltage before it reaches sensitive regulators and microcontrollers. Use Value: Withstands 400 W surges and maintains VC ≤ 113 V, preventing latch-up or gate oxide damage in downstream PMICs and MCUs. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs exposed to relay coil switching noise. IC Role / Device Role / Timing Role: TVS mounted directly at sensor connector to shunt fast transients (<1 ns rise time) before they couple into signal conditioning circuitry. Use Value: Low VWM = 70.1 V allows coexistence with 24 V nominal industrial buses while clamping spikes to <113 V - preserving ADC input range integrity. |
| Telecom DC Power Input Protection | Consumer Device USB Port ESD Suppression |
|
Use Scenario: Securing −48 V DC input of telecom base station power supplies against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS configured with cathode to −48 V rail and anode to chassis ground to absorb negative-going transients. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure stable operation in sealed, high-temperature telecom cabinets. |
Use Scenario: Adding secondary-level surge protection on 5 V USB VBUS lines in smart home hubs alongside primary polymer TVS. IC Role / Device Role / Timing Role: Secondary clamping device placed after fuse and upstream of USB controller to handle residual energy missed by primary suppression. Use Value: 113 V clamping voltage prevents overstress on 5 V-rated USB PHYs during combined ESD + surge events per IEC 61000-4-2/4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ85A-E3/5A | Higher VBR (80.8–89.2 V), same SMA package, 400 W rating, but commercial-grade (not AEC-Q101 qualified). | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select SMAJ85A-E3/5A if cost sensitivity outweighs automotive compliance needs and VBR tolerance aligns with system margin. |
| 1.5SMC82A | Same VBR range (77.9–86.1 V), higher PPPM = 1500 W, larger SMC (DO-214AB) package, no AEC-Q101 certification. | Requires PCB area increase (~7.1 mm × 6.2 mm vs. 5.3 mm × 4.5 mm); suited for higher-energy surge zones like main power entry. | Choose 1.5SMC82A only when surge threat level exceeds 400 W and board space permits larger footprint. |
Compared with SMAJ85A-E3/5A, P4SMA82AHM3_A/H offers guaranteed automotive qualification and halogen-free construction; versus 1.5SMC82A, it trades surge capacity for compact size and AEC-Q101 - making it optimal for space-constrained, automotive-grade node-level protection.
Availability
P4SMA82AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB power management requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA82AHM3_A/H 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, efficiency, and application-specific optimization.
The P4SMA Series is engineered for robust transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 validation, and surface-mount scalability across 6.8 V to 540 V standoff voltages.
FAQ
What is the breakdown voltage tolerance of P4SMA82AHM3_A/H?
The P4SMA82AHM3_A/H has a specified breakdown voltage range of 77.9 V to 86.1 V at 1 mA test current, corresponding to ±5% tolerance around the nominal 82 V rating. This tight VBR window ensures predictable clamping onset and compatibility with 70–85 V system overvoltage thresholds. The value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's 88367 datasheet revision 09-Jan-2024.
Is P4SMA82AHM3_A/H suitable for bidirectional transient suppression?
No, P4SMA82AHM3_A/H is a unidirectional TVS diode - indicated by the "A" suffix and cathode band marking. It conducts only during positive overvoltage events on the cathode side and blocks reverse current below VWM. For bidirectional protection, Vishay offers the P4SMA82CA variant; using P4SMA82AHM3_A/H in AC-coupled or floating lines would leave negative transients unprotected.
Does P4SMA82AHM3_A/H meet automotive qualification standards?
Yes, P4SMA82AHM3_A/H is AEC-Q101 qualified - explicitly stated in Vishay's ordering information table (page 3) and supported by its HM3 suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. This qualification covers stress tests including temperature cycling, mechanical shock, and high-temperature operating life, validating its use in engine compartments and ADAS modules.
What is the maximum clamping voltage of P4SMA82AHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of P4SMA82AHM3_A/H is 113 V at 3.5 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
How does the HM3 suffix affect the material composition of P4SMA82AHM3_A/H?
"HM3" indicates that P4SMA82AHM3_A/H is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - distinguishing it from commercial-grade E3 variants. The molding compound contains no brominated flame retardants or chlorine-based additives, meeting IEC 61249-2-21 requirements while maintaining UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
P4SMA82AHM3_A/H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA82AHM3_A/H FAQ
1.How can I place an order for P4SMA82AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82AHM3_A/H 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 P4SMA82AHM3_A/H reliable?
The price and inventory of P4SMA82AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA82AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82AHM3_A/H?
P4SMA82AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82AHM3_A/H 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 P4SMA82AHM3_A/H?
For technical support, including P4SMA82AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82AHM3_A/H requirements.
6.How does Aetrix verify that P4SMA82AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA82AHM3_A/H 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 P4SMA82AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA82AHM3_A/H?
All P4SMA82AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82AHM3_A/H, 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 P4SMA82AHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA82AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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