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Vishay General Semiconductor - Diodes Division 1.5SMC82CA-E3/9AT
- Part No.:
- 1.5SMC82CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82CA-E3/9AT.pdf
- Description:
- TVS DIODE 70.1VWM 113VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,474
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Product details
Overview
1.5SMC82CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 82 V breakdown voltage (VBR min/max = 77.9 V / 86.1 V), 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 widely deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC82CA-E3/9AT datasheet, 1.5SMC82CA-E3/9AT pinout, 1.5SMC82CA-E3/9AT application, or 1.5SMC82CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, SMC (DO-214AB) package compatibility, 113 V max clamping under 13.3 A surge, RoHS-compliant matte tin terminations, and AEC-Q101 qualification readiness via HE3/HM3 variants.
Technical Context
This device functions as a voltage-clamped crowbar during transient events, leveraging an avalanche breakdown mechanism to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-sensitive layout constraints.
It delivers 1500 W peak pulse power per 10/1000 µs waveform with ≤0.01% duty cycle, supported by low incremental surge resistance and fast response time (<1 ns). Thermal performance is characterized by RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation on standard PCB copper pads (8.0 mm × 8.0 mm).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise avalanche onset threshold for consistent clamping initiation |
| 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 seen by protected IC during full-rated surge event |
| PPPM | 1500 W (10/1000 µs) - surge energy handling capacity without degradation under standardized lightning-like transients |
| IPPM | 13.3 A - maximum non-repetitive peak pulse current the device safely conducts |
| TJ range | –65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 3.2 mm height and 7.75 mm length for automated assembly |
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/JESD 22-B102 solderability standards. Bidirectional construction means no cathode/anode marking - terminals are symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Current Input/Output | Either terminal accepts surge current; bidirectional symmetry allows flexible PCB routing without polarity concern |
| Terminal 2 | Transient Current Input/Output | Paired with Terminal 1 to form low-inductance path for surge diversion to ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity awareness |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) in properly designed layouts |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping, reducing stress on downstream MOSFETs or interface ICs |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| AEC-Q101 qualification path | HE3/HM3 variants support automotive-grade reliability validation for engine control and ADAS sensor modules |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
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 between signal line and chassis ground to clamp transients before they reach the transceiver's ESD diodes. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V transceivers during ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ESD events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges and induced lightning transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Maintains signal integrity by limiting input voltage to ≤113 V during 1 kV/500 A surge tests per IEC 61000-4-5, avoiding ADC saturation or op-amp rail-to-rail clipping. |
| Telecom Power Supply Rail | Consumer USB Port Protection |
Use Scenario: Secondary protection on +12 V or +48 V telecom power distribution rails exposed to long cable runs and external coupling. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing residual energy after upstream MOV or gas discharge tube stages. Use Value: Provides fast-response clamping (sub-nanosecond) to complement slower primary protectors, reducing let-through voltage to <120 V for DC-DC converter IC survival. |
Use Scenario: Overvoltage suppression on USB 2.0 data lines (D+/D−) and VBUS in portable docking stations and hub designs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to connector to minimize stub inductance. Use Value: Limits transient voltage to 113 V while maintaining signal integrity-capacitance not specified but typical for SMC bidirectional TVS is <100 pF at 0 V, suitable for USB 2.0 eye diagram compliance. |
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 85 V VBR, SMB package (smaller footprint, higher thermal resistance) | Best suited for space-constrained consumer electronics where 600 W surge margin suffices | Select when board area is critical and surge threat level is moderate (IEC 61000-4-5 Level 2) |
| 1.5KE82CA | Higher package profile (DO-201AE), through-hole mounting, identical 82 V VBR and 113 V VC, same 1500 W rating | Used in legacy industrial power supplies requiring THT assembly or higher mechanical robustness | Choose for through-hole production lines or where SMC reflow yield is problematic |
Compared with 1.5SMC82CA-E3/9AT, SMBJ85CA trades surge capacity and thermal performance for compactness, while 1.5KE82CA retains full power rating but sacrifices surface-mount automation compatibility-making the 1.5SMC82CA-E3/9AT optimal for high-volume automotive and industrial SMT production requiring AEC-Q101 scalability.
Availability
1.5SMC82CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom power rails, and USB peripheral protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for 1.5SMC82CA-E3/9AT 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, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom systems, engineered for robustness under repetitive surge stress and compatibility with automated SMT manufacturing.
FAQ
What is the clamping voltage of the 1.5SMC82CA-E3/9AT under maximum rated surge current?
The 1.5SMC82CA-E3/9AT exhibits a maximum clamping voltage (VC) of 113 V when subjected to its rated peak pulse current (IPPM) of 13.3 A using a 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88303 and represents the upper limit of voltage imposed on protected circuitry during worst-case surge conditions. The 1.5SMC82CA-E3/9AT maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC82CA-E3/9AT suitable for automotive applications?
Yes-the 1.5SMC82CA-E3/9AT is RoHS-compliant and manufactured in a process qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes. While the -E3/9AT variant itself is commercial-grade, its design basis, thermal specs (TJ = –65 °C to +150 °C), and robust surge rating make it suitable for non-safety-critical automotive subsystems like body control modules and infotainment interfaces. For certified automotive use, specify 1.5SMC82CAHE3_A/I or equivalent.
What does the "CA" suffix indicate in 1.5SMC82CA-E3/9AT?
The "CA" suffix in 1.5SMC82CA-E3/9AT denotes a bidirectional configuration-meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, the CA version has no polarity marking and can be mounted without orientation concern, simplifying layout for AC-coupled or floating signal paths. This is confirmed in Vishay's 1.5SMC Series documentation under "DEVICES FOR BIDIRECTION APPLICATIONS".
What is the standoff voltage (VWM) of the 1.5SMC82CA-E3/9AT?
The standoff voltage (VWM) of the 1.5SMC82CA-E3/9AT is 70.1 V-this is the maximum continuous reverse working voltage the device can withstand without exceeding 1 µA leakage current. It is derived from the 82 V nominal breakdown rating and ensures safe operation below the avalanche threshold during normal system operation. This parameter directly determines compatibility with 70 V-rated power rails or signal swing ranges.
Does the 1.5SMC82CA-E3/9AT require special PCB layout considerations?
Yes-the 1.5SMC82CA-E3/9AT achieves its rated 1500 W pulse power only when mounted on minimum recommended copper pads: 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal, per Vishay document 88303. Short, wide traces to ground or return paths minimize inductance, preserving clamping speed. Avoid thermal relief on pads to ensure optimal heat dissipation, especially in high-duty-cycle surge environments. The 1.5SMC82CA-E3/9AT benefits from symmetric layout due to its bidirectional nature.
1.5SMC82CA-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC82CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82CA-E3/9AT 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-E3/9AT reliable?
The price and inventory of 1.5SMC82CA-E3/9AT 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-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC82CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82CA-E3/9AT?
1.5SMC82CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82CA-E3/9AT 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-E3/9AT?
For technical support, including 1.5SMC82CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC82CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82CA-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC82CA-E3/9AT?
All 1.5SMC82CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82CA-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC82CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82CA-E3/9AT Tags
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