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Taiwan Semiconductor Corporation 1.5SMC180CH
- Part No.:
- 1.5SMC180CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CH.pdf
- Description:
- 1500W, 180V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,512
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Product details
Overview
1.5SMC180CH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 162–198 V, clamping voltage 258 V at 6.1 A peak pulse current, and working stand-off voltage 146 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 1.5SMC180CH datasheet, 1.5SMC180CH pinout, 1.5SMC180CH application, or 1.5SMC180CH equivalent, this device serves as a high-energy, AEC-Q101-qualified TVS for unidirectional/bidirectional DC bus protection where fast response (<1 ps), low leakage (<1 µA @ 146 V), and robust thermal performance (RθJA = 50°C/W) are critical.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, enabling use on AC lines or floating DC buses without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage across -55°C to +150°C operating range.
Designed per ANSI/IEEE C62.35, it delivers 1500 W peak pulse power (10/1000 µs waveform), with clamping voltage tightly specified at 258 V under 6.1 A IPPM - critical for maintaining safe overvoltage margins downstream of protected ICs or MOSFETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 162 V / 198 V - defines minimum and maximum voltage at which device enters avalanche conduction under 1 mA test current; sets lower bound for system overvoltage trip threshold |
| VWM | 146 V - maximum continuous reverse working voltage; must exceed normal circuit operating voltage to prevent leakage-induced power loss |
| VC @ IPPM | 258 V at 6.1 A - clamping voltage during 10/1000 µs surge; determines worst-case overvoltage seen by downstream components |
| PPK | 1500 W - peak pulse power handling capability; enables survival of high-energy transients like load dump or lightning-induced surges |
| IR @ VWM | <1 µA - ultra-low reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering in high-impedance circuits |
| TJ Max | +150°C - maximum junction temperature; supports operation in under-hood automotive or enclosed industrial environments |
| RθJA | 50°C/W - junction-to-ambient thermal resistance; informs PCB copper area requirements for sustained power dissipation |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Case meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No polarity marking required; either terminal functions identically as input/output for surge current in either direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock - suitable for engine control, body electronics, and ADAS power domains |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - eliminates need for external filtering in 12 V/24 V vehicle systems |
| Fast response time | <1.0 ps - limits voltage overshoot before clamping engages, protecting sensitive gate drivers and microcontrollers from sub-nanosecond ESD events |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow - simplifies SMT line integration and reduces manufacturing overhead |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance for global OEM programs |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power rail and sensor supply lines against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting transient overvoltage to ≤258 V during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up or permanent damage to CAN transceivers and MCU power supplies without adding series impedance or signal delay. |
Use Scenario: Safeguarding 24 V digital input modules against field-wiring induced surges and ESD during panel installation. IC Role / Device Role / Timing Role: High-energy transient shunt absorbing up to 1500 W for <1 ms, holding voltage below 258 V during surge. Use Value: Enables direct connection to factory floor wiring without external RC snubbers or relay isolation, reducing BOM count and board space. |
| Telecom Base Station DC Feeds | Renewable Energy Inverter DC Link |
Use Scenario: Guarding -48 V telecom power inputs against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional clamping element referenced to chassis ground, conducting surge energy in either polarity. Use Value: Maintains immunity to differential-mode surges while meeting ITU-T K.20/21 requirements without requiring dual-device configurations. |
Use Scenario: Suppressing switching transients on 600 V DC link capacitors in solar inverters during IGBT turn-off. IC Role / Device Role / Timing Role: Secondary overvoltage clamp backing up primary RCD snubber network during fault conditions. Use Value: Adds redundancy against DC link overvoltage failure modes, improving system MTBF and reducing warranty claims in harsh outdoor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Lower peak power rating (600 W vs. 1500 W); same DO-214AA package but smaller thermal mass | Limited to lower-energy transients (e.g., ESD-only); unsuitable for ISO 7637-2 Pulse 5a load dump | Select only when surge energy is confirmed ≤600 W and board layout restricts larger SMC footprint |
| 1.5KE180CA | Through-hole TO-204AA (DO-41) package; identical electrical specs but no AEC-Q101 qualification | Not approved for automotive under-hood use; requires wave solder or hand-solder process | Prefer for cost-sensitive industrial controls where AEC-Q101 is not mandated and manual assembly is acceptable |
Compared with 1.5SMC180CH, SMBJ180CA offers smaller size but sacrifices 60% peak power handling and automotive qualification, while 1.5KE180CA matches electrical performance but lacks surface-mount compatibility and automotive reliability validation - making 1.5SMC180CH the optimal choice for high-reliability, high-energy, automated SMT deployments.
Availability
1.5SMC180CH is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, and renewable energy inverter DC link applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for 1.5SMC180CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The 1.5SMCxxCH series was developed specifically for AEC-Q101-compliant, high-power transient suppression in automotive power networks and industrial equipment, emphasizing robustness, low leakage, and automated assembly compatibility.
FAQ
What does the "CH" suffix indicate in 1.5SMC180CH?
The "CH" suffix denotes a bidirectional configuration with symmetrical anode/cathode terminals - unlike "H" (unidirectional) variants, 1.5SMC180CH conducts surge current equally in both directions without polarity constraints. This makes it ideal for AC-coupled lines or floating DC buses where voltage polarity reversal may occur during transients. The 1.5SMC180CH achieves this using a back-to-back diode structure within a single DO-214AB package.
Is 1.5SMC180CH suitable for ISO 7637-2 Pulse 5a (load dump) protection?
Yes, 1.5SMC180CH is explicitly rated for ISO 7637-2 Pulse 1/2a/2b/3a/3b and validated for automotive use per AEC-Q101. While Pulse 5a (load dump) demands higher energy handling, the 1500 W peak power rating and 258 V clamping voltage of 1.5SMC180CH enable effective suppression when used with appropriate upstream impedance (e.g., line resistor or choke). System-level testing per ISO 7637-2 remains essential, but the 1.5SMC180CH provides the foundational clamping capability required.
What is the maximum steady-state power dissipation for 1.5SMC180CH?
The steady-state power dissipation (PD) of 1.5SMC180CH is 6.5 W at TA = 25°C, derating linearly above that ambient temperature per the published thermal derating curve. This value reflects continuous DC or low-frequency leakage power - not transient surge energy. For reliable operation, ensure PCB copper area and airflow maintain junction temperature ≤150°C, leveraging its RθJA = 50°C/W and RθJC = 15°C/W thermal metrics. The 1.5SMC180CH is not intended for continuous power regulation.
How does the 1.5SMC180CH compare to unidirectional 1.5SMC180H in terms of leakage current?
Both 1.5SMC180CH and 1.5SMC180H specify maximum blocking leakage current (IR) of <1 µA at their respective VWM (146 V for CH, 144 V for H), measured under identical test conditions. The bidirectional architecture of 1.5SMC180CH does not increase leakage - each internal diode junction maintains the same glass-passivated quality and low-leakage design. Therefore, system standby current impact is equivalent between the two, making 1.5SMC180CH a drop-in functional replacement where polarity-agnostic protection is needed.
Does 1.5SMC180CH require special PCB layout considerations compared to smaller TVS devices?
Yes - due to its 1500 W surge rating, 1.5SMC180CH demands low-inductance, high-current PCB traces: minimum 1.5 mm trace width, direct connection to ground/power planes, and avoidance of vias in the main surge path. Its DO-214AB (SMC) package also requires the recommended pad layout per TSC's datasheet (Document B2207) to ensure solder joint integrity during reflow and mechanical stress. Unlike smaller SMB/SMA devices, undersized copper will cause localized heating and premature failure during surge events - the 1.5SMC180CH must be treated as a high-energy component in layout.
1.5SMC180CH 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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC180CH FAQ
1.How can I place an order for 1.5SMC180CH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CH 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 1.5SMC180CH reliable?
The price and inventory of 1.5SMC180CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180CH is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CH?
1.5SMC180CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CH 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 1.5SMC180CH?
For technical support, including 1.5SMC180CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CH requirements.
6.How does Aetrix verify that 1.5SMC180CH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CH 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 1.5SMC180CH meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CH?
All 1.5SMC180CH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CH, 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 1.5SMC180CH part is unused and in its original packaging.
Return procedure for 1.5SMC180CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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