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Vishay General Semiconductor - Diodes Division 1.5SMC180CAHE3/9AT
- Part No.:
- 1.5SMC180CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CAHE3/9AT.pdf
- Description:
- TVS DIODE 154VWM 246VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,368
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Product details
Overview
1.5SMC180CAHE3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 246 V under 6.1 A peak pulse current, and features a 154 V standoff voltage with ±5% breakdown tolerance (171–189 V at 1 mA). It is AEC-Q101 qualified and used in automotive sensor interfaces and industrial power supply inputs.
For engineers reviewing the 1.5SMC180CAHE3/9AT datasheet, 1.5SMC180CAHE3/9AT pinout, 1.5SMC180CAHE3/9AT application, or 1.5SMC180CAHE3/9AT equivalent, this page provides verified electrical specs, package dimensions, clamping behavior, thermal resistance (RθJA = 75 °C/W), and direct alternatives for ESD/lightning transient suppression in 12–48 V systems.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical breakdown (VBR = 171–189 V), clamping (VC = 246 V @ IPPM = 6.1 A), and leakage (<1 μA @ 154 V) characteristics in either direction. Its glass-passivated junction ensures stable surge response and low incremental surge resistance.
Designed for automated SMT assembly on DO-214AB (SMC) pads, it meets MSL Level 1 (260 °C reflow), JESD201 Class 2 whisker resistance, and UL 94 V-0 flammability. The AEC-Q101 qualification confirms suitability for automotive under-hood and body-control module applications requiring robust transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single high-energy surges common in ISO 7637-2/IEC 61000-4-5 test waveforms |
| Standoff Voltage (VWM) | 154 V - maximum continuous reverse voltage before significant leakage; sets operating margin below breakdown |
| Breakdown Voltage (VBR) | 171–189 V @ 1 mA - tight 5% tolerance ensures predictable turn-on during transients |
| Clamping Voltage (VC) | 246 V @ 6.1 A - limits downstream voltage stress to protected ICs or MOSFETs during surge events |
| Junction Temperature Range | −65 to +150 °C - supports operation in under-hood automotive and industrial environments |
| Thermal Resistance (RθJA) | 75 °C/W - defines temperature rise above ambient at 6.5 W steady-state dissipation on standard PCB pads |
| Package | SMC (DO-214AB) - 7.75 × 6.22 mm surface-mount outline with matte tin-plated leads per J-STD-002 |
Pinout & Package
Package: SMC (DO-214AB), molded case with UL 94 V-0 rating; terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (symmetrical) | Bidirectional conduction path - either terminal serves as anode or cathode depending on transient polarity |
| Terminal 2 | Anode / Cathode (symmetrical) | Identical to Terminal 1; no functional distinction - device mounts without orientation constraint |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV line-to-earth) surges without degradation |
| Glass-passivated junction | Ensures stable VBR over lifetime and low leakage (<1 μA) at rated VWM |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C reflow without popcorn or delamination risk |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage exposure to downstream components during fast-rising transients |
Applications
| Automotive Sensor Interface | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and inductive switching transients in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across signal/power lines upstream of interface ICs to divert surge current away from sensitive inputs. Use Value: Maintains signal integrity by limiting transient voltage to ≤246 V while surviving repeated 1500 W pulses per ISO 7637-2 Pulse 5a. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against lightning-induced surges on 24 V DC field wiring in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DIN-rail mounted I/O terminals, coordinated with upstream fuses and downstream filtering. Use Value: Enables compliance with IEC 61000-4-5 (4 kV) without derating, due to 154 V standoff and 246 V clamping margin relative to 24 V nominal rail. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
Use Scenario: Secondary-side transient suppression on 48 V PoE or AC/DC adapter outputs feeding Ethernet switches or base stations. IC Role / Device Role / Timing Role: Fast-response parallel clamp across DC output rails to suppress ringing and coupling from primary-side switching noise or external surges. Use Value: Clamps within <1 ns to prevent latch-up or gate oxide damage in downstream DC-DC controllers and PHY ICs. |
Use Scenario: Protecting microcontroller GPIOs and H-bridge drivers in washing machine or HVAC blower motor control boards exposed to commutation spikes. IC Role / Device Role / Timing Role: Localized TVS at motor driver IC supply pins and feedback signal nodes to absorb inductive kickback energy. Use Value: Prevents false resets and MOSFET failure by limiting transient overshoot to ≤246 V despite 100+ A inductive currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Lower peak power (600 W), same VWM/VBR range, SMB (DO-214AA) package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics but not for automotive or industrial surge classes requiring 1500 W | Select when board area is critical and surge energy is limited to IEC 61000-4-5 Level 2 (1 kV) |
| 1.5KE180CA | Through-hole (DO-201AE) package, identical 1500 W rating and VC, but slower response and no AEC-Q101 qualification | Used in legacy industrial power supplies where manual assembly and lower reliability requirements apply | Choose only for cost-sensitive, non-automotive designs where SMT is not required and reflow compatibility is irrelevant |
Compared with 1.5SMC180CAHE3/9AT, SMBJ180CA trades surge capacity for compactness, while 1.5KE180CA sacrifices automotive qualification and SMT compatibility for through-hole ease - neither offers drop-in replacement due to package or qualification mismatch.
Availability
1.5SMC180CAHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with AEC-Q101 validation and full traceability.
Supply support for 1.5SMC180CAHE3/9AT 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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series targets high-power transient suppression in harsh environments, engineered for automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC180CAHE3/9AT under maximum rated surge current?
The 1.5SMC180CAHE3/9AT clamps at 246 V when subjected to its maximum peak pulse current of 6.1 A (10/1000 µs waveform). This value is measured and guaranteed per the Vishay datasheet (Document Number: 88303, Rev. 09-Mar-2026), ensuring predictable overvoltage limiting for downstream circuitry during standardized surge events.
Is the 1.5SMC180CAHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC180CAHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets requirements for temperature cycling, mechanical shock, and humidity bias, making it appropriate for engine control units, body electronics, and ADAS sensor interfaces where transient immunity is critical.
Does the 1.5SMC180CAHE3/9AT have polarity markings on the package?
No, the 1.5SMC180CAHE3/9AT is a bidirectional TVS diode and carries no polarity marking on the SMC (DO-214AB) case. Both terminals are functionally identical, allowing placement without orientation constraints - a key advantage for automated assembly and layout flexibility in differential or AC-coupled protection schemes.
What is the standoff voltage (VWM) of the 1.5SMC180CAHE3/9AT, and how does it relate to system voltage?
The 1.5SMC180CAHE3/9AT has a standoff voltage (VWM) of 154 V, meaning it remains in high-impedance state up to that reverse voltage. For reliable operation, system DC rail voltage must stay below 154 V - e.g., it is well-suited for 48 V telecom systems or 12/24 V automotive circuits with sufficient margin to avoid leakage-induced power loss.
How does the thermal resistance of the 1.5SMC180CAHE3/9AT affect PCB layout?
The 1.5SMC180CAHE3/9AT 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 safe junction temperatures under sustained power dissipation, designers must allocate adequate copper area and avoid thermal isolation - especially important in high-temperature automotive or industrial enclosures.
1.5SMC180CAHE3/9AT 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:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC180CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC180CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CAHE3/9AT 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 1.5SMC180CAHE3/9AT reliable?
The price and inventory of 1.5SMC180CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CAHE3/9AT?
1.5SMC180CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CAHE3/9AT 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 1.5SMC180CAHE3/9AT?
For technical support, including 1.5SMC180CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC180CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CAHE3/9AT 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 1.5SMC180CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CAHE3/9AT?
All 1.5SMC180CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CAHE3/9AT, 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 1.5SMC180CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC180CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CAHE3/9AT Tags
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