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Vishay General Semiconductor - Diodes Division 1.5SMC8.2AHE3/9AT
- Part No.:
- 1.5SMC8.2AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC8.2AHE3/9AT.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,873
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Product details
Overview
1.5SMC8.2AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 7.79 V to 8.61 V breakdown voltage (VBR) at 10 mA, 7.02 V standoff voltage (VWM), 12.1 V maximum clamping voltage (VC) at 200 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the 1.5SMC8.2AHE3/9AT datasheet, 1.5SMC8.2AHE3/9AT pinout, 1.5SMC8.2AHE3/9AT application, or 1.5SMC8.2AHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.55), thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<200 µA at VWM) and fast response time (<1.0 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The 1.5SMC8.2AHE3/9AT is rated for 200 A non-repetitive peak forward surge current (IFSM) and supports continuous power dissipation of 6.5 W at 50 °C ambient on infinite heatsink. Its junction temperature range spans –65 °C to +150 °C, and it meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V to 8.61 V at 10 mA - defines precise avalanche onset window for reliable overvoltage triggering |
| VWM | 7.02 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 12.1 V at 200 A - clamped voltage during 10/1000 µs transient, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling capacity under standardized surge waveform |
| IPPM | 200 A - maximum non-repetitive peak pulse current the device can safely divert |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing for thermal management |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts avalanche current when voltage exceeds VBR |
| Anode (unmarked end) | Reference/ground terminal | Typically tied to system ground or lower-potential rail to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| 1500 W peak pulse power | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge events without derating |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or damage to 5 V/3.3 V logic interfaces |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing flow |
| Glass passivated junction | Ensures stable leakage current (<200 µA at VWM) and long-term parameter stability across temperature and lifetime |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp negative-going transients and limit positive excursions to safe levels. Use Value: Prevents permanent damage to 5 V tolerant transceivers by limiting clamped voltage to 12.1 V during 200 A surge events. |
Use Scenario: Safeguarding 24 V digital input circuits in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted across input terminals to absorb repetitive inductive spikes without degradation. Use Value: Maintains functional integrity of optocoupler inputs by holding VC ≤ 12.1 V while supporting 1500 W transient energy absorption. |
| Consumer Power Adapter Output Clamping | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for USB-C PD and smart home devices subjected to mains coupling events. IC Role / Device Role / Timing Role: Fast-response clamping element placed after DC-DC converter output to suppress post-regulator transients. Use Value: Guarantees regulated 5 V/9 V/12 V outputs remain within ±10 % tolerance during 10/1000 µs surges up to 200 A. |
Use Scenario: Primary protection for Ethernet PHY interfaces and POTS line drivers in network edge equipment facing lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS integrated into hybrid transformer circuitry to shunt differential-mode surges to ground. Use Value: Achieves <1.0 ns response time and <12.1 V clamping to preserve signal integrity and prevent PHY latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Lower PPPM (400 W), higher VC (12.5 V at 32.4 A), SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a compliance | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin due to 125 °C/W RθJA |
| 1.5KE8.2A | Through-hole TO-204AE (DO-41), same VBR/VC, but slower response (>5 ns) and no AEC-Q101 qualification | Not suitable for automotive SMT production or high-speed transient suppression | Use only in legacy through-hole designs where reworkability outweighs performance and qualification requirements |
Compared with SMAJ8.0A and 1.5KE8.2A, the 1.5SMC8.2AHE3/9AT delivers superior surge handling (1500 W vs. 400 W/1500 W), automotive qualification, and optimized thermal performance in SMT format - making it the preferred choice for new automotive and industrial designs requiring AEC-Q101 compliance and high-reliability clamping.
Availability
1.5SMC8.2AHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, and telecom line card development requiring stable component supply, AEC-Q101 traceability, and full reel (3500 pcs) packaging for SMT production.
Supply support for 1.5SMC8.2AHE3/9AT 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 AEC-Q101 compliance, low clamping ratios, and robust SMT manufacturability in DO-214AB form factor.
FAQ
What is the breakdown voltage range of the 1.5SMC8.2AHE3/9AT?
The 1.5SMC8.2AHE3/9AT has a guaranteed breakdown voltage (VBR) range of 7.79 V to 8.61 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in 5 V–12 V systems.
Is the 1.5SMC8.2AHE3/9AT AEC-Q101 qualified?
Yes, the 1.5SMC8.2AHE3/9AT carries the HE3 suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It undergoes full automotive qualification including temperature cycling, highly accelerated life testing (HALT), and ESD testing per JESD22-A114, making it suitable for under-hood and safety-critical vehicle subsystems.
What is the maximum clamping voltage of the 1.5SMC8.2AHE3/9AT at rated peak pulse current?
The 1.5SMC8.2AHE3/9AT clamps to a maximum of 12.1 V at its rated peak pulse current of 200 A (10/1000 µs waveform). This value is measured under standardized conditions with 0.31" × 0.31" copper pads per terminal, ensuring predictable protection margins for downstream 5 V and 3.3 V ICs.
Does the 1.5SMC8.2AHE3/9AT have polarity marking, and how is it identified?
Yes, the 1.5SMC8.2AHE3/9AT is unidirectional and features a cathode band marking on the SMC (DO-214AB) package body. The banded end is the cathode and must be connected toward the protected line; the opposite (unmarked) end is the anode, typically routed to ground or reference potential.
What is the thermal resistance and power dissipation rating of the 1.5SMC8.2AHE3/9AT?
The 1.5SMC8.2AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and a continuous power dissipation (PD) of 6.5 W at 50 °C ambient on an infinite heatsink. These values guide PCB layout decisions - such as minimum 8 mm × 8 mm copper pad area per terminal - to maintain TJ ≤ 150 °C under sustained stress.
1.5SMC8.2AHE3/9AT 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC8.2AHE3/9AT FAQ
1.How can I place an order for 1.5SMC8.2AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC8.2AHE3/9AT 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 1.5SMC8.2AHE3/9AT reliable?
The price and inventory of 1.5SMC8.2AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC8.2AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC8.2AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC8.2AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC8.2AHE3/9AT?
1.5SMC8.2AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC8.2AHE3/9AT 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 1.5SMC8.2AHE3/9AT?
For technical support, including 1.5SMC8.2AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC8.2AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC8.2AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC8.2AHE3/9AT 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 1.5SMC8.2AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC8.2AHE3/9AT?
All 1.5SMC8.2AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC8.2AHE3/9AT, 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 1.5SMC8.2AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC8.2AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC8.2AHE3/9AT Tags
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