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Vishay General Semiconductor - Diodes Division 1.5SMC82A-M3/9AT
- Part No.:
- 1.5SMC82A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82A-M3/9AT.pdf
- Description:
- TVS DIODE 70.1VWM 113VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
1.5SMC82A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features a 70.1 V stand-off voltage (VWM), 77.9–86.1 V breakdown voltage (VBR) at 1 mA, 113 V maximum clamping voltage (VC) at 13.3 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 μs). It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC82A-M3/9AT datasheet, 1.5SMC82A-M3/9AT pinout, 1.5SMC82A-M3/9AT application, or 1.5SMC82A-M3/9AT equivalent, key selection criteria include clamping voltage margin relative to protected circuit's absolute maximum rating, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The 1.5SMC82A-M3/9AT operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at 70.1 V), while its low incremental surge resistance enables rapid energy diversion during transient events.
It delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions, with derating above 25 °C per Fig. 2. The device meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation across -65 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 70.1 V - Maximum continuous reverse voltage before conduction begins; sets upper limit for normal circuit operating voltage. |
| VBR (Breakdown) | 77.9–86.1 V at 1 mA - Confirmed avalanche onset range; defines minimum clamping trigger point under test conditions. |
| VC (Clamping) | 113 V at 13.3 A - Maximum voltage seen by protected circuit during 10/1000 μs surge; critical for ensuring downstream component safety margin. |
| PPPM | 1500 W - Peak transient energy absorption capability; determines survivability against IEC 61000-4-5 Level 4 surges. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; dictates required PCB copper area (0.31" × 0.31") for safe 6.5 W steady-state dissipation. |
| Polarity | Unidirectional - Cathode marked by band; blocks forward current until Vf ≈ 3.5 V at 100 A, enabling DC-biased protection paths. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); qualified to JESD201 Class 2 whisker standard; UL 497B recognized (QVGQ2). |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to ground or low-impedance return in unidirectional TVS configuration; carries full IPPM during clamping. |
| Cathode | Reverse voltage sensing / Clamping output node | Marked by band; connected to protected line (e.g., VBUS, signal trace); voltage at this terminal clamps to ≤113 V during surge. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 surges up to 4 kV (line-earth) without degradation over rated duty cycle (0.01%). |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs-e.g., keeps 3.3 V or 5 V logic rails within safe limits during fast transients. |
| MSL Level 1 moisture sensitivity | Allows direct placement without baking; compatible with standard lead-free reflow profiles peaking at 260 °C. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and humidity stress conditions. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising surge robustness. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground, clamping surges within nanoseconds to prevent MOSFET gate oxide failure. Use Value: With 113 V clamping and 1500 W rating, it holds rail voltage below 120 V during 100 V/100 ms load dump events, preserving downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector interface, shunting transients before they reach op-amp input stages or ADC front-ends. Use Value: Low 1.0 μA leakage at 70.1 V avoids signal offset errors; 13.3 A IPPM handles ±8 kV contact ESD (IEC 61000-4-2) without latch-up. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Safeguarding 48 V PoE-powered switches against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Primary TVS on PSE side, placed upstream of DC-DC converter input to absorb bulk surge energy before regulation. Use Value: 75 °C/W RθJA allows reliable operation on standard FR4 with minimal copper; 1500 W rating exceeds IEEE 802.3bt surge immunity requirements. |
Use Scenario: Preventing damage to USB-C controller ICs during hot-plug events or accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and GND, activated only when reverse voltage exceeds 70.1 V-ignoring normal 5–20 V operation. Use Value: 113 V clamping ensures no stress on 24 V-rated USB PD controllers; M3 halogen-free compliance supports global consumer product certifications. |
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-TAP | Lower peak power (600 W), smaller SMB (DO-214AA) package, same VWM/VBR/VC specs. | Not suitable for 1500 W surge environments; limited to lower-energy IEC 61000-4-2/4-4 events. | Select only when board space is constrained and surge threat level is ≤600 W (e.g., secondary-side protection). |
| 1.5KE82A | Through-hole DO-201 package, identical electrical specs but higher RθJA (~50 °C/W on infinite heatsink), no MSL Level 1 rating. | Requires wave soldering or hand assembly; incompatible with high-volume SMT lines and lead-free reflow. | Choose only for legacy through-hole designs or prototyping where thermal management via heatsink is feasible. |
Compared with SMBJ82A-TAP and 1.5KE82A, the 1.5SMC82A-M3/9AT uniquely combines 1500 W surge capacity, SMC surface-mount compatibility, MSL Level 1 reflow readiness, and halogen-free compliance-making it the preferred choice for production-grade automotive and industrial SMT power rail protection.
Availability
1.5SMC82A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interfaces, telecom DC inputs, and consumer USB-C power delivery systems requiring stable component supply, halogen-free compliance, and high-reliability surge immunity.
Supply support for 1.5SMC82A-M3/9AT 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, power handling, and automotive qualification.
The 1.5SMC Series was developed for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where compact size, AEC-Q101 readiness, and repeatable clamping performance are essential.
FAQ
What is the clamping voltage of the 1.5SMC82A-M3/9AT under a 10/1000 μs surge?
The 1.5SMC82A-M3/9AT has a maximum clamping voltage (VC) of 113 V at 13.3 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC standards and represents the highest voltage imposed on the protected circuit during surge conduction. It is confirmed in the Electrical Characteristics table of Vishay Document Number 88303.
Is the 1.5SMC82A-M3/9AT suitable for automotive applications?
Yes-the 1.5SMC82A-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), meets MSL Level 1 per J-STD-020, and is part of the AEC-Q101-qualified 1.5SMC family (suffix _A denotes qualification for 6.8 V to 220 V variants). While the specific 1.5SMC82A-M3/9AT ordering code does not carry HE3/HM3 automotive branding, its base 1.5SMC82A variant is explicitly listed as AEC-Q101 qualified in Vishay documentation, confirming suitability for automotive power rail and sensor protection.
How does the 1.5SMC82A-M3/9AT differ from bidirectional TVS diodes like 1.5SMC82CA?
The 1.5SMC82A-M3/9AT is unidirectional and features a cathode band for polarity identification, allowing it to block forward current until ~3.5 V while clamping reverse surges above 70.1 V. In contrast, 1.5SMC82CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The 1.5SMC82A-M3/9AT is selected for DC-biased lines (e.g., VBUS, battery feeds), whereas 1.5SMC82CA suits AC-coupled or floating signal paths like data lines.
What is the thermal resistance and how does it affect PCB layout for the 1.5SMC82A-M3/9AT?
The 1.5SMC82A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This means each watt of steady-state power raises junction temperature by 75 °C above ambient. For its 6.5 W power dissipation rating, this requires careful copper area allocation-undersized pads will cause thermal runaway during sustained overvoltage events.
Does the 1.5SMC82A-M3/9AT have UL recognition?
Yes-the 1.5SMC82A-M3/9AT carries Underwriters Laboratories recognition under UL 497B (QVGQ2 file number E136766) for both unidirectional and bidirectional variants in the 1.5SMC Series. This certification validates its performance as a transient protector in telecommunications and industrial equipment meeting UL safety requirements.
1.5SMC82A-M3/9AT 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC82A-M3/9AT FAQ
1.How can I place an order for 1.5SMC82A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82A-M3/9AT 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 1.5SMC82A-M3/9AT reliable?
The price and inventory of 1.5SMC82A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC82A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC82A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82A-M3/9AT?
1.5SMC82A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82A-M3/9AT 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 1.5SMC82A-M3/9AT?
For technical support, including 1.5SMC82A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC82A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82A-M3/9AT 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 1.5SMC82A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC82A-M3/9AT?
All 1.5SMC82A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82A-M3/9AT, 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 1.5SMC82A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC82A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82A-M3/9AT Tags
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