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Vishay General Semiconductor - Diodes Division P4SMA82AHM3_A/I
- Part No.:
- P4SMA82AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82AHM3_A/I.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,544
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Product details
Overview
P4SMA82AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 82 V breakdown voltage (VBR = 77.9–86.1 V at 1 mA), 70.1 V standoff voltage (VWM), and 113 V clamping voltage (VC) at 3.5 A peak pulse current. It delivers 400 W peak pulse power (10/1000 µs waveform), supports automotive-grade reliability per AEC-Q101, and protects MOSFETs and ICs against inductive switching transients in industrial power supplies.
For engineers reviewing the P4SMA82AHM3_A/I datasheet, P4SMA82AHM3_A/I pinout, P4SMA82AHM3_A/I application, or P4SMA82AHM3_A/I equivalent, this page provides verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, AEC-Q101 qualification status, and halogen-free RoHS-compliant sourcing details - all specific to the HM3_A/I variant.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (70.1 V), it transitions from high-impedance blocking to low-impedance conduction at VBR (min 77.9 V), limiting transient voltage to ≤113 V at 3.5 A. Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
Thermal design relies on RθJA = 120 °C/W (typical, no heatsink) and RθJL = 30 °C/W, with derating above 25 °C ambient per Figure 2. The device is qualified to AEC-Q101, uses matte tin-plated leads compliant with J-STD-002, and meets MSL Level 1 (peak reflow 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 70.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 113 V at 3.5 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 400 W - peak pulse power handling capability under standard lightning-surge waveform |
| IFSM | 40 A - single half-sine surge rating (8.3 ms), critical for inrush and fault-current protection |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood or enclosed industrial environments |
| Package | SMA (DO-214AC) - standardized SMD outline with 5.0 mm × 5.0 mm copper pad requirement for thermal management |
Pinout & Package
SMA (DO-214AC) surface-mount package with cathode band marking; terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or low-side return path in unidirectional clamp configuration |
| Cathode | Avalanche conduction terminal / High-side connection point | Connected to protected line (e.g., DC bus, signal rail); band denotes cathode end per polarity convention |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use with extended temperature cycling, humidity, and mechanical shock testing |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with JEDEC J-STD-020 MSL Level 1 and environmental regulations |
| 400 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) with proper PCB layout |
| Low incremental surge resistance | Enables tighter VC/IPPM ratio (113 V / 3.5 A = ~32.3 Ω), minimizing let-through energy |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA at VWM), and long-term reliability |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V DC input rails in programmable logic controllers (PLCs) against load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed across input capacitor to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Clamps 10/1000 µs surges to ≤113 V, preventing damage to 36 V-rated input stages while maintaining <1 µA leakage at 24 V nominal. |
Use Scenario: Safeguarding LIN bus transceivers and sensor interfaces in BCMs exposed to battery voltage spikes during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail upstream of regulator, activated only during >70.1 V events. Use Value: AEC-Q101 qualification ensures operation from −40 °C to +125 °C ambient, with 40 A IFSM tolerance for sustained overvoltage events. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Stage |
Use Scenario: Secondary-side transient suppression on 48 V PoE-powered Ethernet switch line cards subjected to induced lightning surges. IC Role / Device Role / Timing Role: Fast-response TVS parallel to DC-DC output stage, triggered within nanoseconds to limit overshoot on PHY ICs. Use Value: 113 V clamping voltage prevents latch-up in 5 V/3.3 V logic interfaces powered from regulated 48 V rails. |
Use Scenario: Protecting gate drivers and bootstrap circuits in BLDC motor inverters from shoot-through-induced voltage spikes during commutation. IC Role / Device Role / Timing Role: Clamp diode across high-side FET source-drain to absorb inductive kickback from motor windings. Use Value: 400 W peak power rating handles repetitive 10/1000 µs transients common in 20 kHz PWM-driven motor systems without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ82A-E3/5A | Same VBR range (77.9–86.1 V), but lower PPPM = 400 W (same), higher VC = 137 V at 2.9 A; non-AEC-Q101, commercial grade only | Lacks automotive qualification; suitable for cost-sensitive industrial designs where AEC-Q101 is not mandated | Select if AEC-Q101 is unnecessary and lead time favors Vishay's SMAJ series inventory |
| 1.5SMC82AHE3/A | Higher package thermal mass (SMC/DO-214AB), same VBR, VC = 113 V at 3.5 A, PPPM = 1500 W - significantly higher surge capacity | Requires larger PCB footprint (7.11 mm × 6.22 mm vs. SMA's 4.50 mm × 2.79 mm); suited for high-energy surge zones | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 and board space permits larger package |
Compared with P4SMA82AHM3_A/I, SMAJ82A-E3/5A offers identical clamping performance but lacks automotive qualification and has higher VC at lower IPPM, while 1.5SMC82AHE3/A trades compactness for 3.75× higher peak power handling - making P4SMA82AHM3_A/I optimal for space-constrained AEC-Q101 designs needing precise 400 W/113 V performance.
Availability
P4SMA82AHM3_A/I is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom line cards, and consumer appliance motor drives requiring stable component supply with halogen-free, AEC-Q101-qualified TVS protection.
Supply support for P4SMA82AHM3_A/I 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 performance.
The P4SMA Series is designed for robust transient suppression in automotive, industrial, and telecom systems - delivering standardized 400 W surge capability, AEC-Q101 qualification, and consistent clamping in compact SMA packages.
FAQ
What is the exact breakdown voltage range for P4SMA82AHM3_A/I?
The P4SMA82AHM3_A/I has a guaranteed breakdown voltage (VBR) range of 77.9 V to 86.1 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tight ±5% tolerance ensures predictable turn-on behavior during overvoltage events and aligns with the "82A" designation in the P4SMA family nomenclature.
Is P4SMA82AHM3_A/I qualified for automotive applications?
Yes, P4SMA82AHM3_A/I is AEC-Q101 qualified - confirmed by its HM3 suffix and documentation in Vishay's P4SMA datasheet revision 09-Jan-2024. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life, making it suitable for under-hood and chassis-mounted automotive electronics.
What does the "HM3_A/I" suffix mean in P4SMA82AHM3_A/I?
In P4SMA82AHM3_A/I, "HM3" indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "A" denotes the revision level (per ordering table footnote 1); "I" specifies 7500-unit tape-and-reel packaging on 13-inch reels - distinct from "H" (1800-unit, 7-inch reels).
How does P4SMA82AHM3_A/I perform thermally on a standard PCB layout?
When mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per Vishay's recommended layout, P4SMA82AHM3_A/I achieves RθJA ≈ 120 °C/W. At 3.3 W steady-state dissipation, junction temperature rise is ~396 °C - thus it is intended for transient-only operation; continuous power must remain well below PD = 3.3 W.
Can P4SMA82AHM3_A/I be used in bidirectional configurations?
No - P4SMA82AHM3_A/I is strictly unidirectional, as indicated by the "A" (not "CA") suffix and cathode band marking. Bidirectional variants (e.g., P4SMA82CA) exist in the same family but have different VBR/VWM ratings and no polarity marking; substituting them requires circuit redesign to accommodate symmetrical clamping.
P4SMA82AHM3_A/I 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/I FAQ
1.How can I place an order for P4SMA82AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82AHM3_A/I 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/I reliable?
The price and inventory of P4SMA82AHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for P4SMA82AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82AHM3_A/I?
P4SMA82AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82AHM3_A/I 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/I?
For technical support, including P4SMA82AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82AHM3_A/I requirements.
6.How does Aetrix verify that P4SMA82AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA82AHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of P4SMA82AHM3_A/I?
All P4SMA82AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82AHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for P4SMA82AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA82AHM3_A/I Tags
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