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Taiwan Semiconductor Corporation 1.5SMC180H
- Part No.:
- 1.5SMC180H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180H.pdf
- Description:
- 1500W, 180V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,817
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Product details
Overview
1.5SMC180H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 180V breakdown voltage (162–198V), and clamps to ≤258V at 6.1A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5SMC180H datasheet, 1.5SMC180H pinout, 1.5SMC180H application, or 1.5SMC180H equivalent, this page delivers verified electrical specs, thermal resistance (RθJA = 50°C/W), clamping behavior, AEC-Q101 qualification status, and real-world ESD/transient immunity use cases.
Technical Context
The 1.5SMC180H operates as a unidirectional avalanche diode with glass-passivated junction, delivering sub-1ps response time and <1μA leakage above 10V. Its 146V working stand-off voltage ensures reliable blocking during normal operation while maintaining fast turn-on under surge conditions.
Designed for automotive-grade reliability, it meets AEC-Q101 stress tests and ISO 7637-2 immunity requirements across all five defined pulse waveforms. Thermal performance is characterized by RθJC = 15°C/W and RθJA = 50°C/W, supporting stable operation up to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 162 V / 198 V - defines guaranteed avalanche conduction range at 1mA test current |
| VWM | 146 V - maximum continuous reverse operating voltage before leakage exceeds 1μA |
| VC @ IPPM | ≤258 V at 6.1 A - clamping voltage limits downstream circuit stress during 10/1000μs surge |
| PPK | 1500 W - peak pulse power handling per single 1ms waveform per Fig.5 |
| RθJA | 50 °C/W - enables thermal design for PCB copper area and ambient conditions up to +75°C |
| TJ max | +150 °C - supports under-hood automotive environments without derating below rated power |
| IR @ VWM | ≤1 μA - ensures minimal standby power loss in high-impedance sensing or battery-backed circuits |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected line (e.g., 12V rail); conducts only during forward surge (IFSM = 200A) |
| Cathode | Current exit point; marked with band | Connected to ground or low-impedance return path; defines unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and HAST |
| ISO 7637-2 compliance | Immunity confirmed for all five standard vehicle transient pulses (Pulse 1, 2a, 2b, 3a, 3b) |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage under humidity and thermal cycling |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow; compatible with standard SMT assembly |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24V CAN bus power lines and sensor supply rails in engine control units against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and local regulator input. Use Value: Limits voltage excursion to ≤258V during 10/1000μs surges, preventing damage to LDOs and microcontrollers rated for ≤36V absolute max. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Standoff protection on 24V DC input terminals upstream of optocoupler isolation stages. Use Value: Absorbs repetitive 1500W transients without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 4 compliance. |
| Telecom DC Power Feeds | Renewable Energy Inverter Control |
Use Scenario: Shielding PoE-powered equipment front-end regulators from lightning-induced surges on 48V DC distribution lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus after AC/DC conversion. Use Value: Clamps within 1ps to prevent latch-up in PMICs and maintain system uptime during outdoor deployment. | Use Scenario: Protecting gate drivers and MCU supply rails in solar inverter auxiliary power supplies subjected to grid-switching transients. IC Role / Device Role / Timing Role: Secondary-stage transient suppression on isolated 15V control rail derived from flyback converter. Use Value: Maintains VWM = 146V margin above nominal 12V rail, ensuring no false triggering during brownout or ripple events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | 600W rating, DO-214AA (SMB) package, lower PPK, same VBR range | Not suitable for ISO 7637-2 Pulse 1 (load dump) due to insufficient energy handling | Select 1.5SMC180H when full 1500W surge capability and AEC-Q101 qualification are required. |
| 1.5KE180A | Through-hole TO-204AE (DO-41), 1500W, but lacks AEC-Q101 and ISO 7637-2 validation | Requires PCB through-hole layout; not compatible with automated SMT lines | Choose 1.5SMC180H for surface-mount production, automotive qualification, and moisture level 1 handling. |
Compared with SMBJ180A and 1.5KE180A, the 1.5SMC180H uniquely combines 1500W surge capacity, AEC-Q101 certification, DO-214AB SMT compatibility, and validated ISO 7637-2 immunity-making it the only drop-in solution for automotive-grade 24V/48V power rail protection where reliability and assembly efficiency are critical.
Availability
1.5SMC180H is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, and telecom DC power feeds requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for 1.5SMC180H 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, serving global automotive, industrial, and consumer markets since 1979.
The 1.5SMC series is part of TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient immunity in harsh automotive and industrial environments with emphasis on ISO 7637-2 compliance and SMT manufacturability.
FAQ
What is the clamping voltage of the 1.5SMC180H under maximum surge conditions?
The 1.5SMC180H clamps to a maximum of 258 V when subjected to its rated peak impulse current of 6.1 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and guarantees protection for downstream components rated for ≤260 V absolute maximum, such as certain automotive-grade DC-DC controllers and gate drivers.
Is the 1.5SMC180H suitable for bidirectional transient suppression?
No - the 1.5SMC180H is unidirectional. For bidirectional operation, TSC specifies the 1.5SMC180AH variant (marked GRJ), which provides symmetrical clamping in both polarities. Using the 1.5SMC180H in reverse-biased configurations risks permanent breakdown and failure.
Does the 1.5SMC180H meet AEC-Q101 requirements for automotive use?
Yes - the 1.5SMC180H is explicitly AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and highly accelerated stress testing (HAST). This qualification is documented in TSC's official product release B2207 and applies to the full 1.5SMC6.8H–1.5SMC200H family.
What is the maximum steady-state power dissipation for the 1.5SMC180H?
The 1.5SMC180H has a steady-state power dissipation (PD) rating of 6.5 W at TA = 25°C. Derating follows the standard curve in Fig.2 of the datasheet, reaching ~3.3 W at 75°C ambient - sufficient for continuous leakage management in 24V systems with <1μA IR.
How does the 1.5SMC180H compare to the 1.5SMC180AH in terms of electrical performance?
The 1.5SMC180H (unidirectional, marking GQJ) has VBR = 162–198 V and VC = 258 V, while the 1.5SMC180AH (bidirectional, marking GRJ) has identical VBR and VC ratings but supports clamping in both directions. Both share the same 1500W PPK, DO-214AB package, and AEC-Q101 qualification - selection depends solely on circuit polarity requirements.
1.5SMC180H 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC180H FAQ
1.How can I place an order for 1.5SMC180H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180H 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 1.5SMC180H reliable?
The price and inventory of 1.5SMC180H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC180H is usually 5 days.
3.What payment methods are accepted for 1.5SMC180H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180H?
1.5SMC180H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180H 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 1.5SMC180H?
For technical support, including 1.5SMC180H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180H requirements.
6.How does Aetrix verify that 1.5SMC180H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180H 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 1.5SMC180H meets industry standards.
7.What is the process for return or replacement of 1.5SMC180H?
All 1.5SMC180H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180H, 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 1.5SMC180H part is unused and in its original packaging.
Return procedure for 1.5SMC180H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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