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Taiwan Semiconductor Corporation 1.5SMC150CH
- Part No.:
- 1.5SMC150CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CH.pdf
- Description:
- 1500W, 150V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,992
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Product details
Overview
1.5SMC150CH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500 W peak pulse power, 150 V breakdown voltage (min 135 V, max 165 V), and clamps to ≤215 V at 7.3 A 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 1.5SMC150CH datasheet, 1.5SMC150CH pinout, 1.5SMC150CH application, or 1.5SMC150CH equivalent, this device delivers AEC-Q101 qualified surge immunity with <1 ps response time, <1 µA leakage above 121 V working stand-off, and bidirectional clamping symmetry critical for CAN/LIN bus and sensor interface protection.
Technical Context
The 1.5SMC150CH uses a glass-passivated silicon junction optimized for fast avalanche breakdown and symmetric bidirectional clamping. Its thermal design supports 150 °C maximum junction temperature with 15 °C/W junction-to-case resistance, enabling reliable operation under repetitive surge conditions when mounted on thermally adequate PCB copper.
It meets ISO 7637-2 test pulses without external series impedance and exhibits a 0.108 %/°C temperature coefficient of breakdown voltage - ensuring stable clamping across automotive ambient ranges (-40 °C to +125 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 135 V / 165 V - defines guaranteed avalanche onset range at 1 mA test current; ensures robust margin above 121 V system operating rail. |
| VWM | 121 V - maximum continuous reverse voltage before significant leakage; sets upper limit for DC-biased protection circuits. |
| VC @ IPPM | ≤215 V at 7.3 A - clamping voltage during 10/1000 µs surge; determines worst-case overvoltage seen by protected IC. |
| PPK | 1500 W - peak pulse power handling per single 10/1000 µs waveform; enables compliance with ISO 7637-2 Pulse 5a (load dump). |
| IR @ VWM | ≤1 µA - ultra-low leakage at rated stand-off; prevents battery drain in always-on automotive modules. |
| TJ max | +150 °C - maximum junction temperature; supports under-hood placement with standard SMT reflow and long-term reliability. |
| Response time | <1.0 ps - intrinsic avalanche speed; eliminates delay-related overshoot in high-dV/dt transients like ESD or inductive switching. |
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 avalanche junction | No polarity marking required; either terminal serves as input/output for transient energy diversion in both directions. |
| Case (body) | Thermal path / mechanical anchor | DO-214AB body provides primary heat conduction to PCB copper; no electrical connection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and body electronics. |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without derating - reduces need for external filtering. |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives - critical for under-hood and industrial outdoor deployments. |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry-pack handling. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance. |
Applications
| Automotive Power Rail Protection | CAN/LIN Bus Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-supplied ECUs from load dump, jump-start, and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp surges before they reach power management ICs and microcontrollers. Use Value: Clamps 1500 W transients to ≤215 V while maintaining <1 µA leakage at 121 V - preserving low-quiescent-current design goals. | Use Scenario: Safeguarding CAN FD or LIN physical layer transceivers against ESD and coupled noise in vehicle networks. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp across differential bus lines (CAN_H/CAN_L or LIN) to suppress ±25 kV contact ESD per IEC 61000-4-2. Use Value: Sub-1 ps response ensures clamping initiates before transceiver input stages are overstressed - preventing latch-up or permanent damage. |
| Sensor Signal Line Protection | Industrial PLC I/O Module Protection |
Use Scenario: Shielding analog and digital sensor outputs (e.g., pressure, temperature, position) from cable-induced surges in factory automation. IC Role / Device Role / Timing Role: Placed at sensor harness entry to absorb induced transients before reaching ADC front-end or GPIO pins. Use Value: Symmetric clamping maintains signal integrity on AC-coupled or floating sensor lines - no DC bias shift or offset error introduced. | Use Scenario: Hardening 24 V digital input channels in programmable logic controllers against field-wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Mounted across input terminals to shunt >1 kV transients into chassis ground, protecting optocoupler or Schmitt-trigger input stages. Use Value: 1500 W rating handles repeated 10/1000 µs surges per IEC 61000-4-5 Level 4 - extends maintenance intervals and reduces field failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | 600 W peak power, DO-214AA (SMB) package, higher RθJA (70 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select only if board space constraints prohibit SMC footprint and surge requirements are ≤600 W. |
| 1.5KE150CA | Through-hole TO-218 package, same 1500 W rating but slower response (~1 ns), no AEC-Q101 qualification | Not automotive-qualified; requires wave soldering; less suitable for high-reliability embedded systems | Choose for legacy through-hole designs where rework flexibility outweighs surface-mount efficiency and automotive compliance. |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC150CH uniquely combines AEC-Q101 qualification, 1500 W capability in a compact SMC package, and sub-picosecond response - making it the preferred choice for new automotive and industrial surface-mount designs requiring robust, certified transient immunity.
Availability
1.5SMC150CH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecommunications infrastructure equipment requiring stable component supply and full AEC-Q101 compliance.
Supply support for 1.5SMC150CH 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 distribution and AEC-Q101 validation capabilities.
The 1.5SMCxxCH series targets high-reliability transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, low leakage, and surface-mount manufacturability.
FAQ
What does the "CH" suffix indicate in 1.5SMC150CH?
The "CH" suffix denotes a bidirectional configuration with symmetrical clamping characteristics in both polarities. Unlike unidirectional variants (e.g., 1.5SMC150H), the 1.5SMC150CH has no cathode marking and provides identical breakdown and clamping behavior regardless of voltage polarity - essential for protecting AC-coupled or differential signal lines such as CAN or LIN buses.
Is 1.5SMC150CH qualified for automotive use?
Yes, the 1.5SMC150CH is AEC-Q101 qualified and tested per automotive stress standards including temperature cycling, highly accelerated life testing (HALT), and ESD. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements - confirming suitability for engine control modules, body control units, and ADAS sensors in passenger and commercial vehicles.
What is the maximum clamping voltage of 1.5SMC150CH under surge conditions?
The maximum clamping voltage of 1.5SMC150CH is 215 V when subjected to its rated peak impulse current of 7.3 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and represents the worst-case overvoltage imposed on downstream circuitry during standardized surge events - critical for verifying safe operating margins of protected ICs.
Can 1.5SMC150CH replace 1.5SMC150AH in a design?
No - the 1.5SMC150AH is unidirectional with a cathode band and specified for single-polarity protection, while the 1.5SMC150CH is bidirectional with symmetrical terminals. Substituting them requires verifying circuit topology: 1.5SMC150CH is appropriate for differential or floating nodes; 1.5SMC150AH suits grounded-rail applications like 12 V power line protection where polarity is fixed.
What is the thermal resistance profile of 1.5SMC150CH?
The 1.5SMC150CH has a junction-to-case thermal resistance (RθJC) of 15 °C/W and junction-to-ambient resistance (RθJA) of 50 °C/W when mounted on a standard FR-4 PCB with 1 in² copper pad. These values enable sustained operation up to 150 °C junction temperature and inform heatsinking decisions for high-duty-cycle surge environments.
1.5SMC150CH 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):
- 121V
- Voltage - Breakdown (Min):
- 135V
- Voltage - Clamping (Max) @ Ipp:
- 215V
- Current - Peak Pulse (10/1000µs):
- 7.3A
- 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)
1.5SMC150CH FAQ
1.How can I place an order for 1.5SMC150CH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CH 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 1.5SMC150CH reliable?
The price and inventory of 1.5SMC150CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150CH is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CH?
1.5SMC150CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CH 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 1.5SMC150CH?
For technical support, including 1.5SMC150CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CH requirements.
6.How does Aetrix verify that 1.5SMC150CH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CH 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 1.5SMC150CH meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CH?
All 1.5SMC150CH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CH, 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 1.5SMC150CH part is unused and in its original packaging.
Return procedure for 1.5SMC150CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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