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Vishay General Semiconductor - Diodes Division 1.5SMC8.2CAHE3/57T
- Part No.:
- 1.5SMC8.2CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC8.2CAHE3/57T.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,746
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Product details
Overview
1.5SMC8.2CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 8.2 V standoff voltage (VWM), 12.1 V clamping voltage (VC) at 200 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC8.2CAHE3/57T datasheet, 1.5SMC8.2CAHE3/57T pinout, 1.5SMC8.2CAHE3/57T application, or 1.5SMC8.2CAHE3/57T equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, SMC (DO-214AB) package thermal resistance (RθJL = 15 °C/W), and low incremental surge resistance for fast transient suppression in harsh environments.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 7.02 V), but triggers into low-impedance conduction when transients exceed its breakdown threshold (VBR min = 7.79 V, max = 8.61 V at 10 mA). Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity sensitivity in AC-coupled or floating signal paths.
Thermally, it sustains 6.5 W continuous power dissipation on infinite heatsink at 50 °C ambient and supports junction temperatures from –65 °C to +150 °C. The glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.02 V - maximum reverse voltage before significant leakage; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 7.79–8.61 V at 10 mA - precise triggering threshold ensuring reliable activation during ESD or surge events. |
| VC (Clamping Voltage) | 12.1 V at 200 A IPPM - limits transient voltage seen by downstream ICs, enabling protection of 5 V and 3.3 V logic rails. |
| PPPM (Peak Pulse Power) | 1500 W with 10/1000 μs waveform - withstands high-energy lightning-induced surges per IEC 61000-4-5 Level 4. |
| ID (Max Reverse Leakage) | 200 μA at VWM - negligible standby current, critical for battery-powered or low-power sensor nodes. |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial control cabinet environments. |
| RθJL | 15 °C/W - low junction-to-lead thermal resistance supports efficient heat transfer to PCB copper pads without external heatsinks. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); mounting pad layout requires 8.0 mm × 8.0 mm copper pads per terminal per datasheet Fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common node in bidirectional configuration | No polarity marking - symmetric conduction allows placement without orientation check on PCB. |
| Cathode | Current exit point in forward bias; common node in bidirectional configuration | Identical electrical role to Anode; bidirectional operation means both terminals function identically under reverse or forward transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces. |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom infrastructure equipment. |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes let-through voltage stress on protected MOSFETs or microcontrollers during fast transients. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
| Glass passivated junction | Ensures long-term reliability and stable VBR over temperature and lifetime in humid or corrosive environments. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across differential signal pair or supply rail to divert surge energy to ground. Use Value: Clamps 12.1 V at 200 A, safeguarding 5 V tolerant transceivers without adding series impedance or propagation delay. |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges during maintenance or lightning proximity. IC Role / Device Role / Timing Role: Primary overvoltage guard at terminal block interface, upstream of optocoupler isolation stage. Use Value: 1500 W rating handles repetitive 10/1000 μs transients per IEC 61000-4-4, extending system uptime in factory-floor environments. |
| Telecom Line Interface | Consumer Power Adapter Input |
|
Use Scenario: Safeguarding Ethernet PHY front-end and PoE injectors against induced surges on unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Secondary-level TVS on data line pairs (e.g., TX+/TX−), working in concert with primary gas discharge tube. Use Value: 12.1 V clamping prevents latch-up in 3.3 V PHY ICs while maintaining signal integrity up to 100 MHz due to low junction capacitance. |
Use Scenario: Input-stage surge suppression in AC-DC adapters for smart home devices, guarding bridge rectifier and primary-side controller. IC Role / Device Role / Timing Role: Parallel-connected bidirectional clamp across bulk capacitor input to absorb line-to-line and line-to-ground transients. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure reliability in enclosed, thermally constrained adapter housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | Lower PPPM (600 W), same SMC-equivalent SMB (DO-214AA) package, VWM = 6.4 V, VC = 12.7 V at 49.2 A | Targeted for lower-energy transients; insufficient for IEC 61000-4-5 Level 4 compliance | Select when space-constrained layouts require smaller footprint and surge threat level is limited to ESD or contact discharge only. |
| 1.5KE8.2CA | Higher profile DO-15 axial package, same VWM/VC specs, but RθJA = 100 °C/W vs. 75 °C/W for SMC | Not suitable for automated SMT assembly; thermal performance inferior in dense PCB layouts | Choose only for through-hole prototyping or legacy board refresh where rework of SMT pads is impractical. |
Compared with SMBJ8.0CA and 1.5KE8.2CA, the 1.5SMC8.2CAHE3/57T delivers higher surge robustness in an AEC-Q101-qualified SMT package with superior thermal coupling - making it the preferred choice for production-grade automotive and industrial designs requiring validated reliability and automated manufacturability.
Availability
1.5SMC8.2CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC8.2CAHE3/57T 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, ruggedness, and automotive-grade qualification.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in demanding environments - combining high peak power, low clamping, and AEC-Q101 validation to protect sensitive electronics in automotive, industrial, and telecom systems.
FAQ
What is the clamping voltage of the 1.5SMC8.2CAHE3/57T under maximum surge conditions?
The 1.5SMC8.2CAHE3/57T clamps to 12.1 V at its rated peak pulse current of 200 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and represents the maximum voltage imposed on protected circuitry during worst-case surge events - critical for ensuring compatibility with 5 V or 3.3 V logic interfaces downstream of the 1.5SMC8.2CAHE3/57T.
Is the 1.5SMC8.2CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC8.2CAHE3/57T carries AEC-Q101 qualification (indicated by the "HE3" suffix), confirming its suitability for automotive use cases including engine control units, body electronics, and ADAS sensor interfaces. Its operating junction temperature range (–65 °C to +150 °C), MSL Level 1 reflow compatibility, and validated surge performance make it appropriate for under-hood and cabin-mounted systems where the 1.5SMC8.2CAHE3/57T provides certified overvoltage resilience.
How does the bidirectional design of the 1.5SMC8.2CAHE3/57T affect circuit layout?
The 1.5SMC8.2CAHE3/57T has no polarity marking and functions identically in both directions - simplifying PCB layout by eliminating orientation constraints. Unlike unidirectional TVS diodes, it can be placed across AC-coupled lines, floating grounds, or differential pairs without concern for anode/cathode alignment. This symmetry reduces assembly errors and supports compact routing in space-limited automotive and industrial modules where the 1.5SMC8.2CAHE3/57T serves as a universal protection element.
What is the thermal resistance from junction to leads (RθJL) for the 1.5SMC8.2CAHE3/57T?
The 1.5SMC8.2CAHE3/57T has a typical junction-to-leads thermal resistance (RθJL) of 15 °C/W, as specified in the Thermal Characteristics table of Vishay document 88303. This low value enables efficient heat transfer from the silicon die directly into the PCB copper pads - supporting reliable 6.5 W continuous power dissipation at 50 °C ambient without external heatsinking, a key advantage in thermally dense applications where the 1.5SMC8.2CAHE3/57T operates near its thermal limits.
Does the 1.5SMC8.2CAHE3/57T meet RoHS and halogen-free requirements?
The 1.5SMC8.2CAHE3/57T is RoHS-compliant and AEC-Q101 qualified (per "HE3" suffix), but it is not halogen-free - that designation applies only to "HM3" variants. Its molding compound meets UL 94 V-0 flammability rating, and its matte tin-plated leads comply with J-STD-002 solderability and JESD22-B102 whisker resistance Class 2. For halogen-free compliance in automotive or green-electronics programs, the 1.5SMC8.2CAHM3/57T variant must be selected instead of the 1.5SMC8.2CAHE3/57T.
1.5SMC8.2CAHE3/57T 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):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 124A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC8.2CAHE3/57T FAQ
1.How can I place an order for 1.5SMC8.2CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC8.2CAHE3/57T 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 1.5SMC8.2CAHE3/57T reliable?
The price and inventory of 1.5SMC8.2CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC8.2CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC8.2CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC8.2CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC8.2CAHE3/57T?
1.5SMC8.2CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC8.2CAHE3/57T 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 1.5SMC8.2CAHE3/57T?
For technical support, including 1.5SMC8.2CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC8.2CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC8.2CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC8.2CAHE3/57T 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 1.5SMC8.2CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC8.2CAHE3/57T?
All 1.5SMC8.2CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC8.2CAHE3/57T, 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 1.5SMC8.2CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC8.2CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC8.2CAHE3/57T Tags
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