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Vishay General Semiconductor - Diodes Division 1.5SMC180CA-E3/9AT
- Part No.:
- 1.5SMC180CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CA-E3/9AT.pdf
- Description:
- TVS DIODE 154VWM 246VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,341
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Product details
Overview
1.5SMC180CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 µs), 154 V standoff voltage (VWM), and clamping at ≤246 V (VC) under 6.1 A peak pulse current. It protects signal lines and power rails in automotive sensor interfaces and industrial I/O modules against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5SMC180CA-E3/9AT datasheet, 1.5SMC180CA-E3/9AT pinout, 1.5SMC180CA-E3/9AT application, or 1.5SMC180CA-E3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and AEC-Q101 qualification readiness via HE3/HM3 variants.
Technical Context
This TVS operates symmetrically in both directions with identical breakdown (VBR = 171–189 V at 1 mA), clamping (VC ≤ 246 V), and leakage (<1 µA at 154 V) characteristics. Its glass-passivated junction ensures stable avalanche behavior and fast response time (<1 ns) to transient events.
Thermal performance is defined by RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and maximum junction temperature of +150 °C. The device sustains repetitive 10/1000 µs pulses at 0.01% duty cycle without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 154 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 171–189 V at 1 mA - Verified avalanche onset range ensuring consistent turn-on across production lots and temperature. |
| VC (Clamping) | ≤246 V at 6.1 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream ICs and MOSFETs. |
| PPPM | 1500 W - Peak pulse power handling capability under standardized 10/1000 µs waveform; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| IPPM | 6.1 A - Corresponding peak pulse current at VC; used to size PCB trace width and verify layout survivability. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
SMC (DO-214AB) package with two terminals: no polarity marking for bidirectional operation. Cathode/anode designation is not applicable; both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient voltage input/output node | Connected directly across protected line pair (e.g., CAN_H/CAN_L, RS-485 A/B); conducts bidirectionally during overvoltage events. |
| Terminal 2 | Transient voltage input/output node | Electrically symmetrical to Terminal 1; forms low-impedance shunt path to ground or rail-to-rail during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and leakage in both directions - eliminates need for orientation-aware placement in differential or AC-coupled signal paths. |
| 1500 W peak pulse rating | Validated per 10/1000 µs waveform - meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment. |
| Glass-passivated junction | Stable avalanche characteristics over lifetime and temperature - ensures predictable clamping voltage drift <0.108 %/°C. |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - supports standard lead-free assembly without baking or special handling. |
| RoHS-compliant matte tin plating | Solderable per J-STD-002 and JESD 22-B102 - ensures reliable intermetallic formation and long-term joint integrity. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Communication Line |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across sensor supply and ground pins to limit voltage excursions during ESD and surge events. Use Value: Maintains signal integrity by clamping transients to ≤246 V while drawing minimal leakage (<1 µA) during normal operation. |
Use Scenario: Safeguarding differential data lines (A/B) of RS-485 transceivers in factory automation PLCs subjected to cable-induced lightning surges. IC Role / Device Role / Timing Role: Rail-to-rail TVS connected between A and B lines to suppress common-mode and differential-mode transients without disrupting DC bias. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV) testing due to symmetrical 1500 W pulse handling and sub-nanosecond response. |
| Consumer Appliance Motor Control Board | Telecom Power Input Stage |
Use Scenario: Shielding microcontroller GPIOs and gate drivers on washing machine motor control boards from inductive kickback generated by BLDC motor commutation. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to motor driver IC outputs to absorb energy before it propagates into logic circuitry. Use Value: Prevents latch-up and permanent damage by limiting transient voltage to 246 V at 6.1 A, within safe SOA of 3.3 V/5 V logic interfaces. |
Use Scenario: Front-end surge suppression on 48 V telecom power inputs subject to AC mains coupling and lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device placed after input filter but before DC-DC converter to divert bulk surge energy away from sensitive regulation circuitry. Use Value: Handles 1500 W peak pulses without thermal runaway, supported by RθJA = 75 °C/W and +150 °C TJ rating for sustained reliability. |
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 | Same VWM/VC ratings but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA). | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for high-reliability automotive front-end protection. | Select when board space is constrained and surge threat level is moderate; verify thermal derating for continuous operation. |
| 1.5KE180CA | Through-hole DO-201 package; identical electrical specs but incompatible with SMT assembly and higher RθJA. | Used in legacy designs or prototyping where manual assembly or socketing is acceptable; lacks MSL Level 1 compliance. | Choose only for repair, replacement, or non-automated production; avoid for new SMT-based automotive or industrial designs. |
Compared with SMBJ180CA and 1.5KE180CA, the 1.5SMC180CA-E3/9AT delivers full 1500 W surge capability in an MSL Level 1–qualified SMT package, enabling direct integration into high-volume automotive and industrial PCBs without rework or thermal compromise.
Availability
1.5SMC180CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interface hardening, and telecom power input surge suppression requiring stable component supply and full traceability.
Supply support for 1.5SMC180CA-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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5SMC Series was developed to deliver high-power transient suppression in compact SMT packages for next-generation automotive ECUs, industrial I/O modules, and telecom infrastructure - emphasizing AEC-Q101 readiness, thermal robustness, and surge repeatability.
FAQ
What does the "CA" suffix indicate in 1.5SMC180CA-E3/9AT?
The "CA" suffix in 1.5SMC180CA-E3/9AT denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., 1.5SMC180A), the 1.5SMC180CA-E3/9AT has no cathode marking and functions identically whether voltage is applied across its terminals in either direction - essential for protecting AC-coupled or differential signal lines such as CAN, RS-485, or Ethernet PHY interfaces.
Is 1.5SMC180CA-E3/9AT AEC-Q101 qualified?
The base 1.5SMC180CA-E3/9AT is RoHS-compliant and commercial-grade; it is not AEC-Q101 qualified. However, Vishay offers AEC-Q101–qualified versions under ordering codes like 1.5SMC180CAHE3_A/I (with HE3 suffix and revision code), which undergo additional stress testing for automotive under-hood applications. For automotive use, specify the HE3 or HM3 variant - the 1.5SMC180CA-E3/9AT itself is intended for industrial and consumer systems where AEC-Q101 is not mandated.
What is the clamping voltage of 1.5SMC180CA-E3/9AT at its rated peak pulse current?
The 1.5SMC180CA-E3/9AT clamps to a maximum of 246 V when subjected to its specified peak pulse current of 6.1 A under the standard 10/1000 µs waveform. This value is guaranteed across temperature and production lot, and represents the highest voltage the protected circuit will experience during a worst-case surge event - critical for ensuring downstream components remain within their absolute maximum ratings.
Can 1.5SMC180CA-E3/9AT be used in place of a unidirectional TVS like 1.5SMC180A?
No - the 1.5SMC180CA-E3/9AT is strictly bidirectional and cannot replace a unidirectional TVS such as 1.5SMC180A in circuits requiring DC blocking or polarity-specific clamping (e.g., single-rail power line protection). Substituting introduces risk of unintended conduction during normal forward-biased operation. Use 1.5SMC180CA-E3/9AT only where symmetrical protection is required, such as across differential pairs or AC signal paths; verify schematic topology before interchange.
What is the maximum printed circuit board pad size recommended for thermal performance of 1.5SMC180CA-E3/9AT?
Vishay specifies that optimal thermal performance for the 1.5SMC180CA-E3/9AT is achieved using 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as defined in Figure 2 of the datasheet. Deviating from this layout increases RθJA beyond the rated 75 °C/W, potentially causing junction temperature exceedance during repetitive surge events - especially critical in enclosed industrial enclosures or automotive under-hood environments where ambient temperatures exceed 85 °C.
1.5SMC180CA-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):
- 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)
1.5SMC180CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC180CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CA-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 1.5SMC180CA-E3/9AT reliable?
The price and inventory of 1.5SMC180CA-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 1.5SMC180CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CA-E3/9AT?
1.5SMC180CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CA-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 1.5SMC180CA-E3/9AT?
For technical support, including 1.5SMC180CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC180CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CA-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 1.5SMC180CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CA-E3/9AT?
All 1.5SMC180CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CA-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 1.5SMC180CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC180CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CA-E3/9AT Tags
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