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Vishay General Semiconductor - Diodes Division 1.5SMC82CA-M3/9AT
- Part No.:
- 1.5SMC82CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82CA-M3/9AT.pdf
- Description:
- TVS DIODE 70.1VWM 113VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,808
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Product details
Overview
1.5SMC82CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features 82 V breakdown voltage (VBR min/max = 77.9 V / 86.1 V at 1 mA), 70.1 V standoff voltage (VWM), clamps to ≤113 V at 13.3 A peak pulse current (10/1000 µs), and delivers 1500 W peak pulse power. It is widely deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC82CA-M3/9AT datasheet, 1.5SMC82CA-M3/9AT pinout, 1.5SMC82CA-M3/9AT application, or 1.5SMC82CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.61), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
The 1.5SMC82CA-M3/9AT operates as a silicon avalanche diode with symmetrical bidirectional conduction-no polarity marking required-and exhibits fast sub-nanosecond response to transients. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
Thermally, it supports operation from –65 °C to +150 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15 °C/W. It meets MSL Level 1 per J-STD-020 and is rated for 0.01% duty cycle repetitive surges under 10/1000 µs waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise avalanche initiation threshold in both directions |
| VWM | 70.1 V - maximum continuous reverse operating voltage before significant leakage |
| VC @ IPPM | ≤113 V at 13.3 A - clamping voltage limiting downstream circuit stress during surge |
| PPPM | 1500 W (10/1000 µs) - peak transient energy absorption capacity without failure |
| IPPM | 13.3 A - maximum non-repetitive surge current the device safely clamps |
| TJ max | +150 °C - enables reliable operation in under-hood automotive and industrial ambient environments |
| Package | SMC (DO-214AB) - surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically - conducts surge current in either direction when |V| > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 2 Ω source impedance lines |
| Low clamping ratio (VC/VWM ≈ 1.61) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for global industrial and automotive shipments |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp transients before they reach precision amplifier or microcontroller input pins. Use Value: Prevents latch-up or permanent damage to 5 V or 12 V sensor interface ICs during ISO 7637-2 Pulse 1/2/5a tests. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges and lightning-induced coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on terminal block side of isolation barrier, absorbing up to 1500 W surges before isolation components. Use Value: Maintains signal integrity and extends mean time between failures (MTBF) in factory-floor control cabinets exposed to motor switching noise. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, and POTS interface ICs from induced surges on outdoor telecom cabling. IC Role / Device Role / Timing Role: First-stage protection device mounted directly at connector entry point, shunting surge energy to ground before reaching data transformer or PHY IC. Use Value: Achieves immunity to ITU-T K.20/K.21 basic/intermediate protection levels without requiring multi-stage designs. |
Use Scenario: Suppressing commutation spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals to clamp inductive kickback (L·di/dt) below MOSFET or relay voltage ratings. Use Value: Eliminates need for snubber RC networks while reducing PCB area and BOM count in cost-sensitive white goods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Lower peak power (600 W), same VWM/VBR range, SMB package (smaller footprint, lower thermal mass) | Best suited for space-constrained consumer electronics with lower surge threat profiles | Select when board area is critical and IEC 61000-4-5 Level 3 (2 kV) suffices |
| 1.5KE82CA | Higher leakage (5 µA vs. <1 µA), axial leaded DO-201 package, identical electrical specs but not surface-mount | Used in legacy through-hole designs or prototyping where rework flexibility is prioritized over automation | Choose only for manual assembly or when existing DO-201 footprint must be retained |
Compared with SMBJ85CA and 1.5KE82CA, the 1.5SMC82CA-M3/9AT provides superior surge robustness (1500 W vs. 600 W or 1500 W with inferior thermal performance), automated placement compatibility, and tighter leakage control-making it optimal for high-reliability SMT production targeting automotive and industrial standards.
Availability
1.5SMC82CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card surge protection requiring stable component supply and halogen-free compliance.
Supply support for 1.5SMC82CA-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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments-targeting design-in across automotive, industrial, and telecom infrastructure where robustness and repeatability are mandatory.
FAQ
What does the "CA" suffix indicate in 1.5SMC82CA-M3/9AT?
The "CA" suffix in 1.5SMC82CA-M3/9AT denotes a bidirectional configuration, meaning the device clamps transient voltages symmetrically in both polarities-ideal for protecting AC signals, differential buses, or ungrounded lines without polarity constraints. This differs from "A"-suffixed unidirectional variants that require correct cathode orientation.
Is 1.5SMC82CA-M3/9AT AEC-Q101 qualified?
The base 1.5SMC82CA-M3/9AT is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the HM3-suffixed variant (e.g., 1.5SMC82CAHM3_A/I) which carries full AEC-Q101 qualification for automotive applications-verified per stress test requirements including HTOL, TCT, and ESD.
What is the maximum clamping voltage of 1.5SMC82CA-M3/9AT under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC82CA-M3/9AT is 113 V when subjected to its rated peak pulse current of 13.3 A using the standardized 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88303, Rev. 09-Mar-2026) and defines the upper voltage limit imposed on protected circuitry during surge events.
How does the SMC (DO-214AB) package of 1.5SMC82CA-M3/9AT compare thermally to SMA or SMB packages?
The SMC package used in 1.5SMC82CA-M3/9AT provides significantly better thermal performance than SMA or SMB: its RθJA is 75 °C/W (vs. ~100–120 °C/W for SMB), enabling higher sustained power dissipation. When mounted on 8.0 mm × 8.0 mm copper pads, it supports the full 1500 W peak pulse rating-whereas smaller packages derate substantially under identical conditions.
Can 1.5SMC82CA-M3/9AT be used in place of a unidirectional TVS like 1.5SMC82A-M3/9AT?
No-1.5SMC82CA-M3/9AT is bidirectional and lacks polarity marking, while 1.5SMC82A-M3/9AT is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC or floating lines; unidirectional is required for DC rails with defined ground reference. Interchange may cause improper clamping or failure to protect.
1.5SMC82CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
1.5SMC82CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC82CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82CA-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 1.5SMC82CA-M3/9AT reliable?
The price and inventory of 1.5SMC82CA-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 1.5SMC82CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC82CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82CA-M3/9AT?
1.5SMC82CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82CA-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 1.5SMC82CA-M3/9AT?
For technical support, including 1.5SMC82CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC82CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82CA-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 1.5SMC82CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC82CA-M3/9AT?
All 1.5SMC82CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82CA-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 1.5SMC82CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC82CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82CA-M3/9AT Tags
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