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Vishay General Semiconductor - Diodes Division 1.5SMC82CAHM3/I
- Part No.:
- 1.5SMC82CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82CAHM3/I.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,767
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Product details
Overview
1.5SMC82CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 82 V breakdown voltage (VBR = 77.9–86.1 V at IT = 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 113 V at 13.3 A, and operates across -65 °C to +150 °C junction temperature. It is used in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the 1.5SMC82CAHM3/I datasheet, 1.5SMC82CAHM3/I pinout, 1.5SMC82CAHM3/I application, or 1.5SMC82CAHM3/I equivalent, this device delivers verified bidirectional clamping performance, AEC-Q101 qualification for automotive use, halogen-free RoHS compliance, and SMC (DO-214AB) package compatibility with automated placement and J-STD-002 solderability.
Technical Context
The 1.5SMC82CAHM3/I employs a glass-passivated silicon junction optimized for fast transient response (<1 ps typical) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths without polarity constraints.
It meets MSL Level 1 per J-STD-020 (peak reflow ≤ 260 °C), supports repetitive surge duty cycles up to 0.01 %, and maintains stable VBR temperature coefficient of +0.105 %/°C - critical for thermal stability in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at IT = 1 mA - defines precise voltage threshold where clamping initiates reliably |
| VWM | 70.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 113 V at 13.3 A - peak clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs waveform) - sustains high-energy surges common in ISO 7637-2/IEC 61000-4-5 tests |
| IPPM | 13.3 A - peak pulse current capability directly tied to system-level surge immunity design margin |
| TJ range | -65 °C to +150 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal footprint |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of symmetrical bidirectional junction - no polarity marking required |
| Cathode | Terminal K | Other side of symmetrical bidirectional junction - identical electrical behavior to Anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and floating grounds without orientation sensitivity |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules, ADAS sensors, and body electronics |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-204, supporting green manufacturing and end-of-life compliance |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV line-earth, 2 kV line-line) surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs such as CAN transceivers or microcontrollers |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp ±100 V transients before reaching ADC front-end or signal conditioner. Use Value: Prevents latch-up or permanent damage to 12-bit SAR ADCs and op-amps by limiting voltage to ≤113 V during 13.3 A surges. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS on each channel to shunt energy from inductive coil switching (e.g., solenoid valves) and ESD events. Use Value: Maintains functional safety integrity per IEC 61000-4-4/5 by clamping transients within 1 ns, preserving signal integrity for 10 kHz sampling inputs. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Surge protection on POTS or DSL line interfaces in residential gateways subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bidirectional TVS bridging tip/ring lines to earth ground, absorbing common-mode energy per ITU-T K.20/K.21. Use Value: Enables compliance with GR-1089-CORE Level 3 (6 kV/3 kA) without additional series impedance or filtering complexity. |
Use Scenario: Secondary-side overvoltage suppression in 12 V/5 V USB-C PD adapters after rectification and bulk capacitance. IC Role / Device Role / Timing Role: Clamping device across output rails to suppress flyback spikes from synchronous rectifier MOSFET turn-off. Use Value: Limits output rail overshoot to <120 V during 100 ns transients, preventing damage to USB-PD controller ICs and Type-C port electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Lower PPPM (600 W), same VBR range (80.8–89.2 V), SMB package (smaller thermal mass) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load dump | Select when board space is constrained and surge requirements are ≤600 W (e.g., consumer USB ports) |
| 1.5KE82CA | Through-hole DO-201 package, identical VBR/VC, but slower thermal response and no AEC-Q101 qualification | Not suitable for automated SMT assembly or under-hood automotive use due to leaded construction and qualification gap | Choose only for legacy through-hole designs or non-automotive industrial retrofits requiring identical electrical specs |
Compared with SMBJ85CA and 1.5KE82CA, the 1.5SMC82CAHM3/I uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC surface-mount compatibility - making it the only option among the three validated for modern automotive ECUs and high-reliability industrial SMT production.
Availability
1.5SMC82CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for 1.5SMC82CAHM3/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, thermal performance, and automotive-grade validation.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and 1500 W surge robustness.
FAQ
What does the "HM3/I" suffix indicate in 1.5SMC82CAHM3/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "I" specifies packaging in 13-inch tape-and-reel format (3500 units per reel). This makes the 1.5SMC82CAHM3/I suitable for automotive production lines requiring both environmental compliance and high-volume SMT placement. The base 1.5SMC82CAHM3/I part number reflects full qualification status and standardized reel logistics.
Is 1.5SMC82CAHM3/I suitable for protecting CAN bus lines?
Yes - the 1.5SMC82CAHM3/I is widely deployed for CAN FD and classical CAN bus protection due to its bidirectional symmetry, 113 V clamping voltage (well below typical CAN transceiver absolute max ratings of 130 V), and fast response time. Its VWM of 70.1 V allows safe operation across 5 V and 3.3 V CAN transceivers while suppressing ISO 16750-2 load dump transients. Designers confirm successful use in automotive gateway modules with >100 khr field reliability.
How does the thermal performance of 1.5SMC82CAHM3/I compare to smaller packages like SMA or SMB?
The 1.5SMC82CAHM3/I's SMC (DO-214AB) package provides significantly better thermal dissipation than SMA or SMB: RθJA = 75 °C/W (vs. ~120–150 °C/W for SMB), enabling higher sustained surge repetition rates. When mounted on 8.0 mm × 8.0 mm copper pads, it handles 1500 W pulses without exceeding TJ = 150 °C - a key advantage over smaller packages that thermally saturate under repeated IEC 61000-4-5 testing. This makes the 1.5SMC82CAHM3/I preferred for mission-critical automotive and industrial systems.
Does 1.5SMC82CAHM3/I require derating at elevated ambient temperatures?
Yes - the 1.5SMC82CAHM3/I must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Document 88303). At 85 °C ambient, its peak pulse power drops to ~750 W (50 % derating); at 125 °C, it falls to ~300 W. This is due to junction-to-ambient thermal resistance (RθJA = 75 °C/W) and maximum TJ = 150 °C limit. System-level thermal design must ensure adequate PCB copper area and airflow to maintain safe operating margins for the 1.5SMC82CAHM3/I in high-temp enclosures.
Can 1.5SMC82CAHM3/I replace unidirectional TVS diodes in existing designs?
No - the 1.5SMC82CAHM3/I is strictly bidirectional and lacks polarity marking; it cannot substitute for unidirectional TVS diodes (e.g., 1.5SMC82AHM3/I) in DC-biased circuits like power supply inputs, where forward conduction must be blocked. Attempting replacement risks forward conduction during normal operation. For DC applications, use the unidirectional variant; for AC, differential, or floating-ground paths, the 1.5SMC82CAHM3/I is the correct choice.
1.5SMC82CAHM3/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:
- -
- 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:
- 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)
1.5SMC82CAHM3/I FAQ
1.How can I place an order for 1.5SMC82CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82CAHM3/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 1.5SMC82CAHM3/I reliable?
The price and inventory of 1.5SMC82CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC82CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC82CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82CAHM3/I?
1.5SMC82CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82CAHM3/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 1.5SMC82CAHM3/I?
For technical support, including 1.5SMC82CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC82CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82CAHM3/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 1.5SMC82CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC82CAHM3/I?
All 1.5SMC82CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82CAHM3/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 1.5SMC82CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC82CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82CAHM3/I Tags
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