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Vishay General Semiconductor - Diodes Division 1.5SMC82A-E3/9AT
- Part No.:
- 1.5SMC82A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC82A-E3/9AT.pdf
- Description:
- TVS DIODE 70.1VWM 113VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,259
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Product details
Overview
1.5SMC82A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 82 V breakdown voltage (VBR = 77.9–86.1 V at 1 mA), 113 V maximum clamping voltage (VC) at 13.3 A peak pulse current, and 1500 W peak pulse power (10/1000 µs). It protects power rails and signal lines in automotive and industrial DC systems against ESD, lightning surges, and inductive switching transients.
For engineers reviewing the 1.5SMC82A-E3/9AT datasheet, 1.5SMC82A-E3/9AT pinout, 1.5SMC82A-E3/9AT application, or 1.5SMC82A-E3/9AT equivalent, this part delivers verified clamping performance, AEC-Q101 qualification readiness (via HE3 suffix variants), RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity - critical for high-reliability automated assembly and under-hood automotive electronics.
Technical Context
This unidirectional TVS operates with a glass-passivated junction and exhibits low incremental surge resistance (typical <1.5 Ω), enabling rapid voltage clamping within <1 ns response time. Its thermal resistance (RθJA = 75 °C/W) and 150 °C max junction temperature support sustained operation in thermally constrained PCB layouts.
The device complies with UL 497B recognition (QVGQ2) and meets JESD201 Class 2 whisker resistance. It is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine) and maintains stable VBR temperature coefficient of +0.105 %/°C - essential for predictable overvoltage protection across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - defines precise breakdown onset for reliable overvoltage triggering |
| VWM | 70.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 113 V at 13.3 A - clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capability for lightning-level transients |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for inductive load switch-off events |
| TJ max | 150 °C - enables use in under-hood automotive environments without derating |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; cathode marked by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to protected circuit ground or low-side return path during clamping |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Handles automotive load-dump and ISO 7637-2 Pulse 5a transients without failure |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping, protecting 85 V-rated MOSFETs and controllers |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning |
| AEC-Q101 qualification option (HE3 suffix) | Enables drop-in qualification path for automotive ECUs requiring stress-tested TVS components |
| Glass passivated chip junction | Ensures long-term reliability and stable leakage (<1 µA at VWM) over 15-year service life |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control units exposed to ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps transients to ≤113 V, preventing damage to 36 V-input buck controllers and preserving system uptime. |
Use Scenario: 24 V analog sensor supply line in factory automation PLC modules subject to inductive switching noise. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast-rising transients before reaching op-amp front-end. Use Value: Sub-1 ns response limits voltage excursion to safe levels for 30 V-rated instrumentation amplifiers and ADC references. |
| Telecom DC Feeder Protection | Consumer Power Adapter Output Protection |
Use Scenario: -48 V DC power feeders in telecom base stations vulnerable to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices protect positive and negative rails relative to chassis ground. Use Value: 1500 W rating sustains multiple 10/1000 µs surges without degradation, meeting Telcordia GR-1089-CORE requirements. |
Use Scenario: 19 V output of laptop AC/DC adapters exposed to user-induced plug/unplug transients. IC Role / Device Role / Timing Role: TVS placed after secondary-side rectifier and before USB-PD controller input. Use Value: 70.1 V stand-off ensures no conduction during normal operation; 113 V clamping prevents overvoltage lockout in PD negotiation ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ82A-E3/52T | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Not suitable for automotive load dump; limited to consumer-grade 100–200 W surge events | Select only if board space is constrained and surge energy is ≤600 W |
| 1.5KE82A | Through-hole DO-201 package, same VBR/VC, but slower thermal recovery and no MSL rating | Requires wave soldering; incompatible with fully SMT production and high-volume automated assembly | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ82A-E3/52T and 1.5KE82A, the 1.5SMC82A-E3/9AT provides superior surge robustness (1500 W vs. 600 W or 1500 W with inferior thermal management), full SMT process compatibility, and direct path to AEC-Q101 qualification - making it the preferred choice for production automotive and industrial power systems.
Availability
1.5SMC82A-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom DC feeder safeguarding, and consumer adapter output clamping requiring stable component supply, traceable sourcing, and long-term lifecycle continuity.
Supply support for 1.5SMC82A-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, TVS devices, and optoelectronics with emphasis on reliability, precision, and automotive-grade qualification.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom infrastructure where robustness, repeatability, and AEC-Q101 readiness are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC82A-E3/9AT under maximum surge conditions?
The 1.5SMC82A-E3/9AT has a maximum clamping voltage (VC) of 113 V at 13.3 A peak pulse current (IPPM), measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see no more than 113 V during worst-case transients. The 1.5SMC82A-E3/9AT achieves this with low dynamic impedance, minimizing voltage overshoot beyond the clamping threshold.
Is the 1.5SMC82A-E3/9AT RoHS-compliant and halogen-free?
Yes, the 1.5SMC82A-E3/9AT carries the "E3" suffix, indicating it is RoHS-compliant per EU Directive 2011/65/EU and meets Vishay's commercial-grade material specifications. It is not halogen-free - that designation requires the "M3" suffix (e.g., 1.5SMC82A-M3/9AT). Both E3 and M3 variants use matte tin-plated leads and satisfy JESD201 Class 2 whisker resistance testing.
Does the 1.5SMC82A-E3/9AT meet AEC-Q101 for automotive use?
The 1.5SMC82A-E3/9AT itself is not AEC-Q101 qualified; however, Vishay offers the functionally identical 1.5SMC82AHE3_A variant (with HE3 suffix) which is fully AEC-Q101 qualified for automotive applications. The 1.5SMC82A-E3/9AT shares the same die, package, and electrical characteristics - only the test documentation and traceability differ. For production automotive designs, specify the HE3 version to ensure compliance evidence is provided.
What is the recommended PCB pad layout for the 1.5SMC82A-E3/9AT?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for the 1.5SMC82A-E3/9AT to achieve rated 1500 W pulse power dissipation. These pads must be directly connected to internal ground/power planes via multiple thermal vias. Deviating from this layout reduces surge current capability and risks solder joint fracture under repeated transient stress. The 1.5SMC82A-E3/9AT datasheet Figure 2 provides exact dimensional tolerances for SMC (DO-214AB) mounting.
How does the temperature coefficient affect the 1.5SMC82A-E3/9AT's performance in automotive environments?
The 1.5SMC82A-E3/9AT has a VBR temperature coefficient of +0.105 %/°C, meaning its breakdown voltage increases by ~0.086 V/°C over its -65 °C to +150 °C operating range. At 125 °C, VBR rises to ~88.5 V - still well below the 113 V clamping limit. This positive drift ensures consistent overvoltage protection margin across under-hood temperatures without false triggering or loss of protection integrity.
1.5SMC82A-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:
- 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC82A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC82A-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 1.5SMC82A-E3/9AT reliable?
The price and inventory of 1.5SMC82A-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 1.5SMC82A-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC82A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC82A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC82A-E3/9AT?
1.5SMC82A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC82A-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 1.5SMC82A-E3/9AT?
For technical support, including 1.5SMC82A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC82A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC82A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC82A-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 1.5SMC82A-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC82A-E3/9AT?
All 1.5SMC82A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC82A-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 1.5SMC82A-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC82A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC82A-E3/9AT Tags
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