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Vishay General Semiconductor - Diodes Division 1.5SMC82AHM3_A/I
- Part No.:
- 1.5SMC82AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82AHM3_A/I.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
1.5SMC82AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 82 V breakdown voltage (VBR = 77.9–86.1 V at IT = 1.0 mA), 70.1 V maximum stand-off voltage (VWM), 113 V clamping voltage (VC) at 13.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs and industrial motor drives to suppress lightning-induced transients.
For engineers reviewing the 1.5SMC82AHM3_A/I datasheet, 1.5SMC82AHM3_A/I pinout, 1.5SMC82AHM3_A/I application, or 1.5SMC82AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMC (DO-214AB) package dimensions, thermal resistance (RθJA = 75 °C/W), and real-world design implications for surge immunity validation and PCB layout planning.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (70.1 V), it transitions rapidly from high-impedance to low-impedance state, diverting transient energy to ground while limiting downstream voltage to ≤113 V. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns).
The device is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports operation from –65 °C to +150 °C, and meets JESD201 Class 2 whisker resistance and MSL Level 1 (260 °C reflow). The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at IT = 1.0 mA - defines precise breakdown threshold for reliable triggering without premature conduction |
| VWM | 70.1 V - maximum continuous reverse operating voltage; must exceed normal circuit rail voltage to avoid leakage or power loss |
| VC @ IPPM | 113 V at 13.3 A - clamping voltage under 1500 W 10/1000 µs surge; determines protected IC's maximum stress during transient |
| PPPM | 1500 W - peak pulse power handling capacity; enables suppression of high-energy surges like ISO 7637-2 Pulse 5a |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; requires ≥8.0 mm × 8.0 mm copper pads per terminal for full power derating |
| IFSM | 200 A - single half-sine surge rating; supports protection against load dump events in 12 V automotive systems |
| TJ max. | +150 °C - maximum junction temperature; allows operation in under-hood environments without thermal shutdown |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; tied to protected line's lower-potential side (e.g., GND or return path) | Must connect to system ground or low-side reference to enable proper clamping path during reverse-transient events |
| Cathode | Current exit point during reverse-biased clamping; marked with band; connects to protected line (e.g., 12 V rail) | Directly interfaces with the vulnerable node; trace routing must minimize inductance to preserve <1.0 ns response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors - supports PPAP and long-term reliability requirements |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (50 V, 100 ms) and IEC 61000-4-5 Combination Wave (1 kV/500 A) without degradation |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 µA), and immunity to humidity-induced parameter drift |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles - no pre-baking required, reducing manufacturing complexity and cost |
| Halogen-free & RoHS-compliant (HM3) | Fulfills EU ELV and China RoHS mandates; eliminates brominated flame retardants without compromising UL 94 V-0 flammability rating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control units exposed to load dump (up to 60 V) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps transients to ≤113 V, preventing damage to 40 V-rated input MOSFETs and enabling compliance with ISO 16750-2. |
Use Scenario: RS-485 communication lines in factory automation PLCs subjected to EFT bursts and cable coupling noise. IC Role / Device Role / Timing Role: Bidirectional-capable layout (though 1.5SMC82AHM3_A/I is unidirectional, used with series resistor for asymmetrical protection) on differential pair inputs. Use Value: Limits induced common-mode spikes to safe levels for MAX1487-level transceivers, preserving data integrity during 4 kV EFT testing. |
| Telecom DC Power Feeding | Consumer Appliance Motor Drive Protection |
Use Scenario: 48 V PoE-powered remote radio units experiencing lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary TVS on DC input before DC-DC isolation stage; coordinated with secondary TVS and MOV. Use Value: Absorbs 1500 W surge energy within 10/1000 µs, maintaining output regulation and avoiding latch-up in SiC gate drivers. |
Use Scenario: Brushless DC motor controller in smart washing machines, where back-EMF spikes threaten MCU GPIOs and gate drivers. IC Role / Device Role / Timing Role: Localized TVS on VDD supply rail of motor driver IC (e.g., DRV8305) near H-bridge outputs. Use Value: Suppresses 100 V+ inductive kickback within nanoseconds, eliminating false resets and extending MCU lifetime under repeated stall conditions. |
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 PPPM (600 W), same VBR range (77.9–86.1 V), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use; unsuitable for automotive under-hood deployment | Select when board space is constrained and surge energy is ≤600 W; verify thermal margin with smaller pad layout. |
| 1.5KE82A | Through-hole DO-201 package, identical VBR/VC specs, but slower response (>5 ns) and no AEC-Q101 qualification | Designed for legacy prototyping or low-volume repair; incompatible with automated SMT assembly and automotive PPAP documentation | Choose only for hand-soldered evaluation or cost-sensitive non-automotive replacements where reflow compatibility is irrelevant. |
Compared with SMBJ82A-E3/52 and 1.5KE82A, the 1.5SMC82AHM3_A/I delivers automotive-grade reliability, superior surge handling (1500 W vs. 600 W or 1500 W with inferior packaging), and SMT manufacturability - making it the sole option for production AEC-Q101-compliant designs requiring both performance and process scalability.
Availability
1.5SMC82AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feeding systems requiring stable component supply across extended product lifecycles and high-reliability validation cycles.
Supply support for 1.5SMC82AHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC82AHM3_A/I and how does it protect downstream components?
The 1.5SMC82AHM3_A/I has a maximum clamping voltage (VC) of 113 V at 13.3 A peak pulse current (10/1000 µs waveform). This value represents the highest voltage that will appear across the protected line during a surge event. By limiting transient voltage to this level, the 1.5SMC82AHM3_A/I prevents overstress of downstream components such as 100 V-rated MOSFETs or 120 V-input DC-DC controllers, ensuring functional safety and long-term reliability in automotive and industrial systems.
Is the 1.5SMC82AHM3_A/I suitable for automotive applications, and what qualifications does it hold?
Yes, the 1.5SMC82AHM3_A/I is explicitly qualified to AEC-Q101 standards, as confirmed by its HM3 suffix and Vishay documentation. It is rated for operation from –65 °C to +150 °C, passes JESD201 Class 2 whisker testing, and meets MSL Level 1 reflow requirements (260 °C peak). These attributes make the 1.5SMC82AHM3_A/I appropriate for under-hood engine control modules, body control units, and ADAS sensor power supplies where environmental robustness and process consistency are critical.
How does the SMC (DO-214AB) package of the 1.5SMC82AHM3_A/I affect thermal performance and PCB layout?
The SMC (DO-214AB) package of the 1.5SMC82AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, which assumes mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve full 1500 W pulse rating, PCB layout must allocate sufficient copper area and consider internal plane connectivity. Smaller pads increase thermal impedance, derating power capability - so the 1.5SMC82AHM3_A/I's performance is directly tied to adherence to Vishay's recommended pad geometry.
What is the difference between the HM3 and M3 suffixes in Vishay's 1.5SMC series?
The HM3 suffix in 1.5SMC82AHM3_A/I denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - distinguishing it from the M3 suffix, which is halogen-free and RoHS-compliant but not AEC-Q101 qualified. The "H" in HM3 specifically identifies the AEC-Q101 qualification grade, while "M3" refers only to material content compliance. Therefore, 1.5SMC82AHM3_A/I is certified for automotive use, whereas an M3-part would require additional qualification for such applications.
Can the 1.5SMC82AHM3_A/I be used in bidirectional protection circuits?
No, the 1.5SMC82AHM3_A/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias above VWM; forward conduction occurs above ~1.2 V, but it is not rated for bidirectional clamping. For bidirectional protection, Vishay specifies "CA" suffix parts (e.g., 1.5SMC82CA). Using the 1.5SMC82AHM3_A/I in AC or symmetrical transient scenarios risks incomplete protection and potential device failure.
1.5SMC82AHM3_A/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:
- 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):
- 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_A/I FAQ
1.How can I place an order for 1.5SMC82AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82AHM3_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 1.5SMC82AHM3_A/I reliable?
The price and inventory of 1.5SMC82AHM3_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 1.5SMC82AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC82AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82AHM3_A/I?
1.5SMC82AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82AHM3_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 1.5SMC82AHM3_A/I?
For technical support, including 1.5SMC82AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC82AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82AHM3_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 1.5SMC82AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC82AHM3_A/I?
All 1.5SMC82AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82AHM3_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 1.5SMC82AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC82AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82AHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
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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