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Taiwan Semiconductor Corporation 1.5SMC180
- Part No.:
- 1.5SMC180
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180.pdf
- Description:
- 1500W, 180V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,177
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Product details
Overview
1.5SMC180 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 146V working stand-off voltage (VWM), and 258V maximum clamping voltage (VC) at 6.1A peak impulse current. It protects power rails and signal lines in industrial motor drives against ESD, lightning-induced surges, and load-switching transients.
For engineers reviewing the 1.5SMC180 datasheet, 1.5SMC180 pinout, 1.5SMC180 application, or 1.5SMC180 equivalent, this device is selected for high-energy surge immunity in 120–240V AC/DC input stages, DC bus protection in inverters, and I/O interface hardening where fast response (<1.0 ps), low leakage (<1 µA), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The 1.5SMC180 operates as a unidirectional avalanche diode with glass-passivated junction, enabling robust clamping under repetitive 10/1000 µs surge waveforms per REA standards. Its breakdown voltage range is 162–198 V at 1.0 mA test current, and it maintains stable thermal performance with RθJA = 50 °C/W and RθJC = 15 °C/W.
Designed for automated SMT placement, it features matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 146 V - Maximum continuous reverse operating voltage before conduction begins; sets safe margin below system DC bus nominal (e.g., 160–180 V DC). |
| VBR min/max | 162 / 198 V @ 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 258 V @ 6.1 A - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by downstream circuitry. |
| PPK | 1500 W - Peak pulse power rating per 1 ms non-repetitive pulse; supports high-energy transient suppression without failure. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage at rated stand-off; avoids parasitic loading on high-impedance sensing or bias networks. |
| TJ max | +150 °C - Maximum junction temperature; enables reliable operation in enclosed industrial enclosures with ambient up to +125 °C. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.11 × 6.22 mm footprint and 2.34 mm height; compatible with IPC-7351B SMC_711X622N. |
Pinout & Package
DO-214AB (SMC) package: molded plastic case meeting UL 94V-0 flammability rating; cathode indicated by band-marked end; terminals are matte tin-plated for reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction (unidirectional only) | Connected to lower-potential side of protected line (e.g., GND or return path); not used in reverse-biased TVS operation. |
| Cathode | Clamping node during transient events | Connected to higher-potential rail (e.g., DC+ or signal line); conducts avalanche current to ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 258 V max VC at 6.1 A ensures downstream ICs rated for ≤300 V withstand full surge energy without overstress. |
| Response time | <1.0 ps enables suppression before sensitive logic or gate drivers experience voltage overshoot beyond safe thresholds. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) - critical for automotive-adjacent industrial systems. |
| Thermal robustness | RθJC = 15 °C/W allows direct PCB copper pour heatsinking to sustain repeated surges without thermal runaway. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and export compliance. |
Applications
| AC/DC Power Input Protection | Motor Drive DC Bus Clamp |
|---|---|
Use Scenario: 230 V AC rectified to ~325 V DC bus feeding an inverter stage. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and chassis ground to clamp switching spikes and lightning surges. Use Value: Limits transient overvoltage to ≤258 V, protecting IGBT gate drivers and bus capacitors rated for 400 V DC. |
Use Scenario: 400 V DC bus in variable-frequency drive exposed to regenerative braking energy and contactor bounce. IC Role / Device Role / Timing Role: Parallel-mounted TVS absorbing stored inductive energy during rapid IGBT turn-off. Use Value: Dissipates 1500 W peak pulse without degradation, maintaining bus stability during 10/1000 µs transients per IEC 61000-4-5. |
| Industrial PLC Digital I/O Protection | Telecom Line Interface Surge Guard |
Use Scenario: 24 V digital input channel connected to field sensors in factory automation. IC Role / Device Role / Timing Role: TVS placed at connector entry to shunt ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback from solenoid loads. Use Value: Sub-µA leakage preserves signal integrity; 146 V VWM avoids false triggering while allowing 24 V nominal operation. |
Use Scenario: RS-485 data line in outdoor base station equipment subject to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional protection achieved using 1.5SMC180CA variant; clamps both polarities to protect transceiver ICs. Use Value: 258 V clamping voltage aligns with 3.3 V/5 V transceiver absolute maximum ratings when combined with series impedance. |
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 (Bourns) | Same DO-214AA (SMB) package; 1500 W PPK but lower VBR (162–189 V); VC = 259 V @ 6.0 A. | Smaller footprint (4.57 × 3.94 mm) limits thermal mass; less suitable for sustained surge duty cycles. | Select SMBJ180A only if board space is constrained and single-event surge exposure dominates. |
| P6SMB180A (Littelfuse) | Identical DO-214AA (SMB) package; same VBR/VWM/VC specs; slightly higher IR (≤2 µA @ VWM). | Lacks explicit ISO 7637-2 certification in datasheet; requires external validation for automotive-adjacent use. | Prefer P6SMB180A when cost sensitivity outweighs need for pre-validated automotive transients compliance. |
Compared with 1.5SMC180, SMBJ180A offers smaller size but reduced thermal derating margin, while P6SMB180A matches electrical specs but lacks documented ISO 7637-2 validation-making 1.5SMC180 the preferred choice for industrial systems requiring certified surge immunity.
Availability
1.5SMC180 is available at Aetrix Electronics and suitable for AC/DC power input protection, motor drive DC bus clamping, and industrial PLC digital I/O protection requiring stable component supply and long-term obsolescence management.
Supply support for 1.5SMC180 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers, with ISO 9001 and IATF 16949 certified facilities.
The 1.5SMCxx series was designed specifically for high-energy transient suppression in industrial, telecom, and transportation equipment where reliability under harsh EMC conditions is mandatory.
FAQ
What is the polarity configuration of the 1.5SMC180?
The 1.5SMC180 is a unidirectional TVS diode, with cathode identified by a band-marked end. It conducts only when the cathode is at a higher potential than the anode-ideal for DC rail protection where polarity is fixed. For bidirectional protection, the 1.5SMC180CA variant must be used instead of the standard 1.5SMC180.
Does the 1.5SMC180 meet ISO 7637-2 for automotive-related industrial applications?
Yes, the 1.5SMC180 explicitly meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements as stated in its official datasheet. This makes the 1.5SMC180 suitable for industrial control systems deployed in vehicles, mobile machinery, or roadside infrastructure where automotive-grade surge immunity is mandated.
What is the maximum clamping voltage of the 1.5SMC180 under surge conditions?
The 1.5SMC180 has a maximum clamping voltage (VC) of 258 V at 6.1 A peak impulse current (IPPM), measured under the standardized 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can the 1.5SMC180 be used in parallel for higher surge current handling?
No-parallel connection of 1.5SMC180 units is not recommended due to mismatch in VBR tolerance (162–198 V) and dynamic impedance, which causes uneven current sharing and potential thermal runaway. For higher current capability, select a single higher-rated device such as 3.0SMC180 or verify matched-bin pairing per TSC application guidance.
What is the lead finish and solderability specification for the 1.5SMC180?
The 1.5SMC180 features matte tin-plated leads compliant with J-STD-002 for solderability, and passes JESD201 Class 2 whisker testing. Its DO-214AB (SMC) package supports standard Pb-free reflow profiles (JEDEC J-STD-020) with peak temperatures up to 260 °C.
1.5SMC180 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 146V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 258V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC180 FAQ
1.How can I place an order for 1.5SMC180 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180 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 1.5SMC180 reliable?
The price and inventory of 1.5SMC180 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180 is usually 5 days.
3.What payment methods are accepted for 1.5SMC180?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180?
1.5SMC180 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180 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 1.5SMC180?
For technical support, including 1.5SMC180 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180 requirements.
6.How does Aetrix verify that 1.5SMC180 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180 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 1.5SMC180 meets industry standards.
7.What is the process for return or replacement of 1.5SMC180?
All 1.5SMC180 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180, 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 1.5SMC180 part is unused and in its original packaging.
Return procedure for 1.5SMC180:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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