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Taiwan Semiconductor Corporation 1.5SMC180CA
- Part No.:
- 1.5SMC180CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CA.pdf
- Description:
- 1500W, 180V, 5%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,586
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Product details
Overview
1.5SMC180CA from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode with a 180V working stand-off voltage (VWM = 154V), 198V maximum breakdown voltage (VBR), and 246V clamping voltage (VC) at 6.4A peak impulse current. It protects power rails and signal lines in telecom and industrial equipment against ESD, lightning surges, and load-switching transients.
For engineers reviewing the 1.5SMC180CA datasheet, 1.5SMC180CA pinout, 1.5SMC180CA application, or 1.5SMC180CA equivalent, key selection criteria include bidirectional clamping performance, DO-214AB package thermal resistance (RθJC = 15°C/W), compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and moisture sensitivity level 1 handling.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping behavior without polarity dependence. Its glass-passivated junction ensures stable leakage (<1µA at VWM) and fast response (<1.0ps), critical for protecting high-speed interfaces and microcontroller I/Os.
The device is rated for 150°C junction temperature and features a DO-214AB (SMC) package with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Thermal performance is defined by RθJA = 50°C/W and RθJC = 15°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 154 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown |
| VBR (min/max) | 171 V / 189 V - Breakdown occurs within this range at 1mA test current; ensures predictable turn-on threshold |
| VC @ IPPM | 246 V - Clamped voltage at 6.4A peak pulse; determines maximum stress imposed on protected circuitry |
| PPK | 1500 W - Peak pulse power handling per 10/1000µs waveform; supports high-energy surge immunity |
| IR @ VWM | <1 µA - Low leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes |
| TJ max | +150 °C - Enables reliable operation in under-hood automotive or enclosed industrial environments |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 0.210g mass and UL 94V-0 molding compound |
Pinout & Package
Package: DO-214AB (SMC), bidirectional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | No polarity marking required; identical clamping behavior in either direction for AC-coupled or floating lines |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature, minimizing parameter drift in long-life industrial deployments |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive-level transient immunity without additional external filtering components |
| Moisture sensitivity level 1 (J-STD-020) | Enables standard SMT reflow without baking or special handling, reducing manufacturing overhead |
| RoHS and halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates for consumer, telecom, and industrial end equipment |
Applications
| Telecom Line Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting RS-485/RS-232 data lines in base stations and remote terminal units from induced lightning surges and ESD events. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential pair or between line and ground to shunt transients before IC damage. Use Value: 246V clamping at 6.4A limits stress on transceivers rated for ±25V common-mode range while maintaining signal integrity during normal operation. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and contactors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24V DC input channels, absorbing repetitive switching transients up to 1500W peak. Use Value: 150°C max junction temperature and 50°C/W RθJA enable sustained operation in unventilated control cabinets without derating. |
| Automotive Body Control Module | Consumer Power Adapter Input Stage |
Use Scenario: Suppressing load-dump and jump-start transients on 12V supply rails in body electronics modules per ISO 7637-2. IC Role / Device Role / Timing Role: Secondary protection device downstream of primary fuses and upstream of DC-DC converters and microcontrollers. Use Value: Confirmed Pulse 2a/2b/3a/3b compliance eliminates need for supplemental TVS stages, simplifying BOM and layout. |
Use Scenario: Clamping line-to-line and line-to-ground surges on AC-DC adapter primary-side rectifier outputs. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp limiting voltage overshoot during MOV failure or surge events. Use Value: Sub-1ps response time prevents voltage spikes from propagating to downstream capacitors and switching controllers during 8/20µs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA (Bourns) | 600W rating, SMB package (smaller footprint, higher RθJA = 65°C/W), same VWM/VBR range | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select when board space is constrained and peak surge energy ≤600W suffices |
| P6SMB180CA (Littelfuse) | 600W rating, SMB package, tighter VBR tolerance (±5% vs ±5.5%), same DO-214AB pin-compatible variant available as P6SMB180CAY | Requires verification of clamping voltage margin (VC = 259V) against protected IC absolute maximum ratings | Choose for legacy designs using SMB footprint or where tighter VBR distribution improves yield |
Compared with 1.5SMC180CA, SMBJ180CA offers smaller size but sacrifices 60% peak power handling and thermal robustness, while P6SMB180CA trades power rating for tighter parametric control-neither matches the 1500W/DO-214AB combination of the original for high-energy industrial or automotive use cases.
Availability
1.5SMC180CA is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive body control modules requiring stable component supply and full ISO 7637-2 compliance.
Supply support for 1.5SMC180CA 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 global AEC-Q200 and industrial qualification capabilities.
The 1.5SMC series was designed for high-reliability surface-mount surge protection in harsh environments, emphasizing robust clamping, low leakage, and standardized packaging for automated assembly.
FAQ
What is the clamping voltage of the 1.5SMC180CA at its rated peak pulse current?
The 1.5SMC180CA has a maximum clamping voltage (VC) of 246 V at 6.4 A peak impulse current (IPPM), measured under the standard 10/1000 µs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuits during transient events and is confirmed in the Electrical Specifications table of the official TSC datasheet revision S2207.
Is the 1.5SMC180CA unidirectional or bidirectional, and how is polarity indicated?
The 1.5SMC180CA is a bidirectional TVS diode, as indicated by the "CA" suffix per TSC's ordering convention. It has no cathode band or polarity marking because both terminals behave identically-clamping symmetrically in either direction. This makes it suitable for AC lines, differential signals, or floating DC rails where polarity reversal may occur.
Does the 1.5SMC180CA meet automotive transient immunity standards?
Yes, the 1.5SMC180CA meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, which cover typical automotive electrical disturbances including inductive switch-off, battery connection reversal, and capacitive coupling noise. It is not rated for Pulse 5a (load dump), which requires higher energy handling beyond its 1500W rating.
What is the thermal resistance profile of the 1.5SMC180CA, and why does it matter for PCB layout?
The 1.5SMC180CA has a junction-to-case thermal resistance (RθJC) of 15°C/W and junction-to-ambient (RθJA) of 50°C/W in standard mounting conditions. These values guide copper pour sizing and airflow planning: achieving the full 1500W surge rating requires minimizing thermal impedance from the SMC package leads to internal ground/power planes to avoid localized overheating during repetitive surges.
How does the 1.5SMC180CA differ from the 1.5SMC180A variant?
The 1.5SMC180A is unidirectional (single-anode/cathode), while the 1.5SMC180CA is bidirectional (symmetrical). Their VBR ranges differ slightly: 1.5SMC180A is 171–189 V, whereas 1.5SMC180CA maintains identical VBR but adds reverse-direction clamping capability. The "CA" version replaces two unidirectional devices in AC or floating applications, reducing component count and layout complexity.
1.5SMC180CA 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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)
1.5SMC180CA FAQ
1.How can I place an order for 1.5SMC180CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CA 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 reliable?
The price and inventory of 1.5SMC180CA 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 is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CA?
1.5SMC180CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CA 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?
For technical support, including 1.5SMC180CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CA requirements.
6.How does Aetrix verify that 1.5SMC180CA is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CA 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 meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CA?
All 1.5SMC180CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CA, 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 part is unused and in its original packaging.
Return procedure for 1.5SMC180CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CA Tags
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