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Vishay General Semiconductor - Diodes Division 1.5SMC82AHM3/I
- Part No.:
- 1.5SMC82AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82AHM3/I.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,441
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Product details
Overview
1.5SMC82AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 82 V breakdown voltage (VBR = 77.9–86.1 V at 1 mA), 113 V maximum clamping voltage (VC) at 13.3 A peak pulse current, and 1500 W peak pulse power with 10/1000 µs waveform - deployed for robust overvoltage protection of automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the 1.5SMC82AHM3/I datasheet, 1.5SMC82AHM3/I pinout, 1.5SMC82AHM3/I application, or 1.5SMC82AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), halogen-free RoHS compliance, and real-world clamping performance under lightning and inductive-switching transients.
Technical Context
The 1.5SMC82AHM3/I operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ps) to transient overvoltages. Its clamping action begins at VWM = 70.1 V and limits voltage to ≤113 V at 13.3 A IPPM, maintaining low incremental surge resistance for effective energy diversion.
Designed for automotive-grade reliability, it meets AEC-Q101 qualification (HM3 suffix), supports operating junction temperatures from –65 °C to +150 °C, and is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), making it suitable for high-energy transient suppression in engine control units and ADAS sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise avalanche onset window for predictable clamping threshold |
| VWM | 70.1 V - maximum continuous reverse stand-off voltage before leakage exceeds 1 µA |
| VC @ IPPM | 113 V at 13.3 A - peak clamped voltage during 10/1000 µs transient, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling capability under standardized lightning surge waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal performance |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (reverse-biased operation) | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Cathode | Current exit terminal (reverse-biased operation) | Connected to system ground; band-marked end ensures correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and chassis systems per stress test requirements |
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance with JEDEC J-STD-201 Class 2 whisker resistance and environmental directives |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when mounted per recommended pad layout |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during fast transients, protecting sensitive 3.3 V/5 V logic interfaces |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching ASIC input pins. Use Value: Limits voltage to ≤113 V during 10/1000 µs surges, preventing latch-up or oxide breakdown in 5 V tolerant receivers. |
Use Scenario: Safeguarding microcontroller GPIOs and optocoupler inputs connected to relay coils and solenoid drivers in PLC I/O modules. IC Role / Device Role / Timing Role: Fast-acting voltage clamp absorbing inductive kickback energy from 24 V DC coils switching at up to 10 Hz. Use Value: Enables reliable operation with <1 µs response time and 200 A surge current tolerance, eliminating need for snubber RC networks. |
| Telecom Line Interface | Consumer Power Adapter ESD |
Use Scenario: Front-end protection for Ethernet PHYs and RS-485 transceivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary TVS stage in multi-stage protection circuit, coordinated with GDT and series impedance. Use Value: Delivers 1500 W pulse handling with 75 °C/W RθJA, ensuring thermal stability during repetitive surge events per ITU-T K.21. |
Use Scenario: Secondary-side overvoltage suppression on 12 V DC output rails of wall-mounted AC/DC adapters used in smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated clamp preventing damage from capacitor discharge events and accidental 24 V misconnection. Use Value: Maintains VWM = 70.1 V margin above nominal 12 V rail, avoiding leakage-related power loss while blocking >100 V faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ82A-E3/52 | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Preferred for space-constrained consumer electronics where 1500 W rating is not required | Select when board area is limited and surge threat level is below IEC 61000-4-5 Level 3 |
| 1.5KE82A | Through-hole DO-201 package, same VBR/VC specs but lower thermal performance (RθJA ≈ 100 °C/W) | Suitable for prototyping or legacy through-hole designs; not AEC-Q101 qualified | Choose only for non-automotive, low-volume, or repair applications requiring manual assembly |
Compared with SMBJ82A-E3/52 and 1.5KE82A, the 1.5SMC82AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, 1500 W rating in SMC package, and validated thermal performance on 8 mm × 8 mm pads - making it the preferred choice for production automotive and industrial surface-mount designs requiring long-term reliability.
Availability
1.5SMC82AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive inputs, telecom line protection, and consumer power adapter overvoltage protection requiring stable component supply across extended product lifecycles.
Supply support for 1.5SMC82AHM3/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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W pulse capability are mandatory design requirements.
FAQ
What is the clamping voltage of the 1.5SMC82AHM3/I at its rated peak pulse current?
The 1.5SMC82AHM3/I has a maximum clamping voltage (VC) of 113 V at 13.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per Vishay's recommended layout, and defines the upper voltage limit imposed on protected circuits during surge events.
Is the 1.5SMC82AHM3/I qualified for automotive applications?
Yes, the 1.5SMC82AHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix in its part number. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive powertrain, body electronics, and ADAS subsystems where reliability under thermal and mechanical stress is critical.
What does the "HM3" suffix indicate for the 1.5SMC82AHM3/I?
The "HM3" suffix on the 1.5SMC82AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It also specifies tape-and-reel packaging in 13-inch reels (suffix "I"), and confirms compliance with JEDEC J-STD-201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow compatibility up to 260 °C peak temperature.
How does the 1.5SMC82AHM3/I compare to bidirectional TVS diodes in the same series?
The 1.5SMC82AHM3/I is unidirectional and features a cathode band for polarity identification; it blocks voltage up to 70.1 V in reverse bias and clamps above that threshold. Bidirectional variants (e.g., 1.5SMC82CA) lack polarity marking and protect both polarities symmetrically, but have lower VBR range (6.8–220 V vs. 6.8–540 V for unidirectional) and are not rated for forward surge current like the 1.5SMC82AHM3/I's 200 A IFSM.
What is the thermal resistance and how does it affect PCB layout for the 1.5SMC82AHM3/I?
The 1.5SMC82AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperature under sustained power dissipation, designers must allocate adequate copper area and avoid excessive trace length or isolation - undersized pads increase RθJA and risk thermal runaway during repetitive surges.
1.5SMC82AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, 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):
- 13.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
1.5SMC82AHM3/I FAQ
1.How can I place an order for 1.5SMC82AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82AHM3/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 1.5SMC82AHM3/I reliable?
The price and inventory of 1.5SMC82AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC82AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC82AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82AHM3/I?
1.5SMC82AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82AHM3/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 1.5SMC82AHM3/I?
For technical support, including 1.5SMC82AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC82AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82AHM3/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 1.5SMC82AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC82AHM3/I?
All 1.5SMC82AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82AHM3/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 1.5SMC82AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC82AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82AHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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