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Vishay General Semiconductor - Diodes Division 1.5SMC180A-E3/9AT
- Part No.:
- 1.5SMC180A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180A-E3/9AT.pdf
- Description:
- TVS DIODE 154VWM 246VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,819
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Product details
Overview
1.5SMC180A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 180 V standoff voltage (VWM), 246 V clamping voltage (VC) at 6.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive power supplies, industrial motor controllers, and telecom interface protection.
For engineers reviewing the 1.5SMC180A-E3/9AT datasheet, 1.5SMC180A-E3/9AT pinout, 1.5SMC180A-E3/9AT application, or 1.5SMC180A-E3/9AT equivalent, key selection criteria include clamping performance under 10/1000 μs transients, thermal derating above 25 °C, unidirectional polarity marking, and RoHS-compliant SMC (DO-214AB) package compatibility with automated placement.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown threshold (171–189 V at 1 mA), it avalanches to limit transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable leakage (<1 μA at 154 V) and fast response (<1 ns).
Thermal design relies on low RθJA (75 °C/W) and RθJL (15 °C/W), enabling reliable operation up to 150 °C junction temperature. The device is rated for repetitive 0.01% duty cycle surges and meets J-STD-020 MSL Level 1 (260 °C reflow peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 154 V - maximum continuous reverse operating voltage before conduction begins; defines safe working margin below clamping |
| VBR min/max | 171 V / 189 V at 1 mA - verified avalanche onset range; ensures predictable turn-on across production lot |
| VC @ IPPM | 246 V at 6.1 A - clamped voltage during 10/1000 μs surge; determines protected circuit's maximum stress level |
| PPPM | 1500 W - peak transient power handling capacity; supports robust lightning and inductive-switching immunity |
| IFSM | 200 A - 8.3 ms half-sine surge rating; validates survivability against high-current power-line faults |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments |
| Package | SMC (DO-214AB) - standardized 7.11 mm × 6.22 mm surface-mount outline; compatible with IPC-7351B footprint and pick-and-place |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; cathode indicated by band on one end; no polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; grounded reference in unidirectional TVS configuration | Connected to system ground or low-impedance return path to enable effective clamping of positive transients on the cathode side |
| Cathode | Current exit terminal in forward bias; protected line connection point in unidirectional TVS | Connected to the line requiring protection (e.g., 24 V rail, RS-485 bus); avalanche conduction occurs when cathode-to-anode voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables suppression of severe lightning-induced surges per IEC 61000-4-5 Level 4 without degradation |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage current over temperature and lifetime cycling |
| MSL Level 1 moisture sensitivity | Allows direct placement without baking; supports standard 260 °C lead-free reflow profiles |
| RoHS-compliant, commercial-grade (E3 suffix) | Fulfills EU RoHS Directive 2011/65/EU and China RoHS; suitable for non-automotive industrial and telecom applications |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection margin for sensitive ICs |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protection of 24 V supply rails in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and ground, clamping spikes exceeding 154 V. Use Value: Limits voltage to ≤246 V during 1500 W surges, preventing damage to MCU power regulators and CAN transceivers. |
Use Scenario: Input stage protection for variable-frequency drives exposed to inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC bus input, triggered within nanoseconds of transient onset. Use Value: Absorbs 200 A fault currents (8.3 ms) without failure, maintaining system uptime in factory automation systems. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Secondary-side surge protection on POTS or xDSL line drivers interfacing with external wiring. IC Role / Device Role / Timing Role: Standoff-rated TVS on low-voltage analog signal paths, blocking normal operation but clamping ESD/lightning events. Use Value: Maintains <1 μA leakage at 154 V while clamping 6.1 A surges to 246 V, preserving signal integrity and SNR. |
Use Scenario: Output overvoltage safeguard in 12–19 V AC/DC adapters for laptops and monitors. IC Role / Device Role / Timing Role: Final-stage crowbar element that shorts excessive output voltage to ground before downstream capacitors rupture. Use Value: Activates at 171 V (min VBR) to prevent >246 V exposure to connected devices, meeting UL 62368-1 transient requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A-E3/52T | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance | Select when board space is constrained and surge threat level is Class II (e.g., indoor consumer electronics) |
| 1.5KE180A-T | Through-hole DO-201 package, identical electrical specs, higher RθJA (100 °C/W) | Requires wave soldering; not compatible with fully SMT assembly; less suitable for high-density PCBs | Choose for legacy designs or where mechanical robustness outweighs automated assembly needs |
Compared with 1.5SMC180A-E3/9AT, SMBJ180A-E3/52T trades peak power for compactness, while 1.5KE180A-T retains full electrical performance but sacrifices SMT process compatibility - making 1.5SMC180A-E3/9AT optimal for new automotive and industrial SMT designs requiring 1500 W surge headroom.
Availability
1.5SMC180A-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, and telecom line interface applications requiring stable component supply, consistent parametric performance, and full traceability.
Supply support for 1.5SMC180A-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 and application-specific optimization.
The 1.5SMC Series targets high-power transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of the 1.5SMC180A-E3/9AT under a 10/1000 μs surge?
The 1.5SMC180A-E3/9AT clamps to a maximum of 246 V when subjected to its rated 6.1 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed across temperature and production lots per Vishay Document 88303, and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the 1.5SMC180A-E3/9AT RoHS-compliant and halogen-free?
The 1.5SMC180A-E3/9AT carries the "E3" suffix, indicating RoHS-compliance per EU Directive 2011/65/EU and China RoHS, but it is not halogen-free. For halogen-free versions, specify the "M3" suffix (e.g., 1.5SMC180A-M3/9AT), which meets both RoHS and JEDEC JS709A halogen-free requirements.
Does the 1.5SMC180A-E3/9AT have AEC-Q101 qualification?
No - the 1.5SMC180A-E3/9AT is a commercial-grade part. AEC-Q101 qualified versions use the "HE3" or "HM3" suffix (e.g., 1.5SMC180AHE3_A/I) and are designated for automotive applications. The E3 suffix confirms RoHS compliance but not automotive qualification.
What is the thermal resistance of the 1.5SMC180A-E3/9AT, and how does it affect layout?
The 1.5SMC180A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C at full 6.5 W steady-state dissipation, PCB layout must provide adequate copper area and avoid thermal bottlenecks near the SMC (DO-214AB) body.
How is polarity identified on the 1.5SMC180A-E3/9AT?
The 1.5SMC180A-E3/9AT is unidirectional and marked with a cathode band on one end of the SMC (DO-214AB) package. That banded end connects to the protected line (e.g., 24 V rail), while the opposite (unmarked) end connects to ground - reversing this orientation disables proper clamping function.
1.5SMC180A-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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- 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)
1.5SMC180A-E3/9AT FAQ
1.How can I place an order for 1.5SMC180A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180A-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 1.5SMC180A-E3/9AT reliable?
The price and inventory of 1.5SMC180A-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 1.5SMC180A-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC180A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180A-E3/9AT?
1.5SMC180A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180A-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 1.5SMC180A-E3/9AT?
For technical support, including 1.5SMC180A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC180A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180A-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 1.5SMC180A-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC180A-E3/9AT?
All 1.5SMC180A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180A-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 1.5SMC180A-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC180A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180A-E3/9AT Tags
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