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Taiwan Semiconductor Corporation 1.5SMC180CAH
- Part No.:
- 1.5SMC180CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CAH.pdf
- Description:
- 1500W, 180V, 5%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,977
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Product details
Overview
1.5SMC180CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 171–189 V, clamping voltage 246 V at 6.4 A peak pulse current, and working stand-off voltage 154 V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients and ESD.
For engineers reviewing the 1.5SMC180CAH datasheet, 1.5SMC180CAH pinout, 1.5SMC180CAH application, or 1.5SMC180CAH equivalent, this device is selected for high-energy surge immunity in 24 V/48 V DC systems where bidirectional clamping, <1 ps response, and AEC-Q101 qualification are required.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient suppression. Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating bus applications without polarity dependency.
It meets ISO 7637-2 test pulses up to 100 V open-circuit voltage and sustains 1500 W peak pulse power (10/1000 µs waveform) at 25 °C, derating linearly above that ambient per RθJA = 50 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 171 V / 189 V - ensures reliable triggering above 154 V system operating voltage while avoiding false trips |
| VWM | 154 V - maximum continuous reverse voltage the device blocks without significant leakage (<1 µA) |
| VC @ IPPM | 246 V - clamped voltage during 6.4 A 10/1000 µs surge, limiting downstream stress to safe levels |
| PPK | 1500 W - peak pulse power handling capability defines robustness against lightning-induced surges |
| TJ Max | +150 °C - junction temperature rating supports operation in under-hood automotive environments |
| RθJA | 50 °C/W - thermal resistance determines required PCB copper area for sustained power dissipation |
| Response Time | <1.0 ps - enables protection of high-speed interfaces and sensitive analog circuitry before damage occurs |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional, cathode band not applicable (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Either terminal accepts transient energy; no polarity orientation required on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ISO 7637-2 compliance | Withstands defined load-dump and coupled transient waveforms without degradation |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under humidity and thermal stress |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking or dry-pack requirements |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally restricted substances |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 24 V battery rail in engine control units exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤246 V, preventing latch-up or gate oxide rupture in downstream 36 V-rated ICs. |
Use Scenario: 48 V fieldbus interface on programmable logic controller backplane. IC Role / Device Role / Timing Role: Bidirectional surge protector on RS-485 or CAN FD physical layer lines. Use Value: Clamps both positive and negative transients symmetrically, preserving signal integrity without polarity biasing. |
| Telecom DC Power Feeds | Renewable Energy Inverter Control |
Use Scenario: -48 V DC power input to base station remote radio units. IC Role / Device Role / Timing Role: Secondary protection stage after primary MOV, absorbing residual fast-rising spikes. Use Value: Sub-nanosecond response captures energy missed by slower bulk protectors, reducing failure rate in outdoor deployments. |
Use Scenario: Auxiliary 24 V control supply in solar inverter gate driver circuits. IC Role / Device Role / Timing Role: Transient suppressor across isolated DC-DC feedback windings. Use Value: Prevents common-mode surges from corrupting isolation barrier timing or causing false shutdowns. |
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 PPK (600 W), same VBR range, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select when board space is constrained and surge energy does not exceed 600 W |
| 1.5KE180CA | Through-hole TO-204AA (DO-41), identical electrical specs but incompatible mounting | Requires manual or wave soldering; not compatible with automated SMT lines | Select only for legacy through-hole designs or prototyping where rework tolerance is prioritized |
Compared with SMBJ180CA and 1.5KE180CA, the 1.5SMC180CAH delivers full 1500 W surge capability in an SMT-compatible DO-214AB package with AEC-Q101 validation-making it the only choice for production automotive and high-reliability industrial SMT assemblies requiring certified bidirectional clamping.
Availability
1.5SMC180CAH is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC power feeds, and renewable energy inverter control requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC180CAH 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, rectifiers, and MOSFETs with global distribution and AEC-Q101 certification capability.
The 1.5SMC series was designed specifically for high-power, surface-mount transient suppression in automotive and industrial environments where reliability under repetitive surge stress and thermal cycling is critical.
FAQ
What is the clamping voltage of the 1.5SMC180CAH under a 10/1000 µs surge?
The 1.5SMC180CAH has a maximum clamping voltage (VC) of 246 V when subjected to its rated peak pulse current of 6.4 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting for downstream components in 24 V and 48 V systems.
Is the 1.5SMC180CAH unidirectional or bidirectional?
The 1.5SMC180CAH is a bidirectional TVS diode, indicated by the "CAH" suffix. It provides symmetrical clamping for both positive- and negative-going transients without requiring polarity-specific PCB layout-ideal for AC-coupled lines or floating grounds.
Does the 1.5SMC180CAH meet AEC-Q101 requirements?
Yes, the 1.5SMC180CAH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This includes stress testing for temperature cycling, highly accelerated life testing (HALT), and ESD robustness-confirming suitability for automotive under-hood and chassis applications.
What is the maximum steady-state power dissipation of the 1.5SMC180CAH?
The 1.5SMC180CAH has a steady-state power dissipation (PD) rating of 6.5 W at 25 °C ambient. Actual usable power must be derated using RθJA = 50 °C/W and the application's board layout and airflow conditions to maintain TJ ≤ 150 °C.
How does the 1.5SMC180CAH differ from the 1.5SMC180AH?
The 1.5SMC180AH is unidirectional (single-polarity clamping), while the 1.5SMC180CAH is bidirectional. Their VBR, VWM, and VC values are identical, but the CAH version eliminates polarity marking and supports symmetrical surge suppression-critical for differential buses like CAN FD or RS-485.
1.5SMC180CAH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC180CAH FAQ
1.How can I place an order for 1.5SMC180CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CAH 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 1.5SMC180CAH reliable?
The price and inventory of 1.5SMC180CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CAH?
1.5SMC180CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CAH 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 1.5SMC180CAH?
For technical support, including 1.5SMC180CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CAH requirements.
6.How does Aetrix verify that 1.5SMC180CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CAH 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 1.5SMC180CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CAH?
All 1.5SMC180CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CAH, 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 1.5SMC180CAH part is unused and in its original packaging.
Return procedure for 1.5SMC180CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CAH Tags
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