My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA82AHM3/I
- Part No.:
- P4SMA82AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82AHM3/I.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,949
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA82AHM3/I 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 maximum 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 and automotive electronics.
For engineers reviewing the P4SMA82AHM3/I datasheet, P4SMA82AHM3/I pinout, P4SMA82AHM3/I application, or P4SMA82AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping performance under surge conditions, and halogen-free RoHS-compliant sourcing details.
Technical Context
The P4SMA82AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (77.9–86.1 V), with fast response time (<1 ns) and low incremental surge resistance enabling effective suppression of ESD and inductive switching transients. Its glass-passivated junction ensures stable leakage and long-term reliability under repetitive surge stress.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it supports reflow soldering up to 260 °C peak, and achieves 3.3 W steady-state power dissipation on infinite heatsink at 50 °C ambient. The device is halogen-free, RoHS-compliant, and AEC-Q101 qualified per automotive-grade revision "B" for high-reliability applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V - defines precise avalanche conduction onset range under 1 mA test current; critical for accurate overvoltage trip point selection |
| VWM | 70.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets safe working margin below breakdown |
| VC @ IPPM | 113 V @ 3.5 A - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure level |
| PPPM | 400 W - peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 3/4 surges |
| IFSM | 40 A - 8.3 ms half-sine surge current rating; supports protection of power rails subject to motor or relay turn-off spikes |
| RθJA | 120 °C/W - junction-to-ambient thermal resistance; informs PCB copper pad sizing and layout for thermal management |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive or industrial enclosures without derating |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward-biased transients or DC bias conditions |
| Cathode | Avalanche clamping terminal | Marked with band; connected to higher-potential side; initiates reverse conduction when VRM > VWM |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables single-device protection against severe lightning-induced surges per IEC 61000-4-5, eliminating need for cascaded TVS stages |
| AEC-Q101 qualified (revision B) | Validated for automotive powertrain and body electronics where failure modes must meet stringent reliability and lifetime requirements |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental compliance mandates including China RoHS II and EU Directive 2011/65/EU without compromising surge performance |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, preserving voltage margin for downstream 75 V-rated components |
| MSL Level 1, 260 °C peak reflow | Supports standard SMT assembly without pre-baking or special handling, reducing manufacturing cost and process complexity |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges above 70 V while remaining non-conductive during normal operation. Use Value: Withstands 400 W pulses and maintains VC ≤ 113 V, ensuring downstream 80 V-rated regulators and microcontrollers remain within absolute maximum ratings. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors exposed to ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted across signal and return path to suppress ±8 kV contact ESD (IEC 61000-4-2) and fast transients induced by nearby motor drives. Use Value: Sub-1 ns response and 113 V clamping prevent latch-up or damage to precision op-amps and ADC front-ends operating at ±15 V supply rails. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Securing -48 V DC input of telecom base station power modules against induced surges from nearby lightning strikes or grid switching. IC Role / Device Role / Timing Role: Unidirectional TVS configured cathode-to-rail to clamp negative transients on the return path, leveraging its 70.1 V standoff and 113 V clamping. Use Value: 40 A IFSM rating handles sustained inductive kickback from telecom rectifier circuits without degradation after repeated events. |
Use Scenario: Adding secondary-level surge immunity to USB Type-A ports in smart home hubs and set-top boxes subjected to user-handling ESD and hot-plug transients. IC Role / Device Role / Timing Role: TVS placed between VBUS and GND to limit transient energy entering the USB controller IC during plug insertion or cable discharge. Use Value: Low-leakage design (<1 µA at 70.1 V) avoids loading the 5 V rail during idle state, while 113 V clamping prevents overvoltage on internal 5.5 V tolerant USB PHYs. |
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 VWM/VBR/VC specs but rated for 400 W with 8.3 ms surge; no AEC-Q101 qualification; RoHS-compliant but not halogen-free | Targeted at commercial/industrial designs without automotive qualification requirements | Select when AEC-Q101 is not mandated and halogen-free content is optional |
| 1.5SMC82AHE3_A | Higher package thermal mass (SMC vs. SMA); identical electrical specs; AEC-Q101 qualified; same HM3 halogen-free RoHS compliance | Better thermal performance in high-duty-cycle surge environments due to larger DO-214AB footprint | Choose when board space permits larger package and enhanced thermal dissipation is needed for repetitive surge scenarios |
Compared with P4SMA82AHM3/I, SMAJ82A-E3/5A offers identical clamping but lacks automotive qualification and halogen-free compliance, while 1.5SMC82AHE3_A provides superior thermal handling in the same AEC-Q101/halogen-free class but requires larger PCB area.
Availability
P4SMA82AHM3/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA82AHM3/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 high-reliability diodes, MOSFETs, and passive components for demanding industrial, automotive, and computing applications.
The P4SMA Series is engineered for robust transient suppression in space-constrained surface-mount designs, with emphasis on automotive-grade reliability, low-profile packaging, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What is the breakdown voltage tolerance of the P4SMA82AHM3/I?
The P4SMA82AHM3/I has a specified breakdown voltage range of 77.9 V to 86.1 V at 1 mA test current, representing a ±5.3% tolerance around the nominal 82 V rating. This tight VBR window ensures predictable clamping behavior in safety-critical applications such as automotive power supplies where overvoltage margin must be precisely controlled. The P4SMA82AHM3/I datasheet confirms this range under standard test conditions (TA = 25 °C).
Is the P4SMA82AHM3/I suitable for bidirectional transient protection?
No, the P4SMA82AHM3/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only during reverse-biased overvoltage events and blocks forward current beyond its VF (~3.5 V at 25 A). For bidirectional protection, Vishay offers the P4SMA82CA variant. Using P4SMA82AHM3/I in bidirectional configurations risks forward conduction damage during positive transients on the anode side.
Does the P4SMA82AHM3/I meet automotive qualification standards?
Yes, the P4SMA82AHM3/I is AEC-Q101 qualified per revision "B", as confirmed in Vishay's ordering information table and thermal characteristics section. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness, making the P4SMA82AHM3/I suitable for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is mandatory.
What is the maximum clamping voltage of the P4SMA82AHM3/I under surge conditions?
The P4SMA82AHM3/I exhibits a maximum clamping voltage (VC) of 113 V at 3.5 A peak pulse current 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 worst-case surge events. The low VC relative to VBR reflects optimized junction design and low incremental resistance, critical for safeguarding 80–100 V-rated components.
How does the halogen-free status of the P4SMA82AHM3/I impact its compliance profile?
The "HM3" suffix in P4SMA82AHM3/I denotes halogen-free construction meeting IEC 61249-2-21 and JEDEC JS709 standards, in addition to RoHS compliance. This eliminates brominated flame retardants and chlorine-based additives from the molding compound, reducing toxic gas emission during PCB rework or end-of-life incineration. The P4SMA82AHM3/I maintains identical electrical and thermal performance versus non-halogen-free variants, with no trade-offs in surge capability or reliability.
P4SMA82AHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for P4SMA82AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82AHM3/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/I reliable?
The price and inventory of P4SMA82AHM3/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/I is usually 5 days.
3.What payment methods are accepted for P4SMA82AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82AHM3/I?
P4SMA82AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82AHM3/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/I?
For technical support, including P4SMA82AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82AHM3/I requirements.
6.How does Aetrix verify that P4SMA82AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA82AHM3/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/I meets industry standards.
7.What is the process for return or replacement of P4SMA82AHM3/I?
All P4SMA82AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82AHM3/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/I part is unused and in its original packaging.
Return procedure for P4SMA82AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA82AHM3/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
