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Taiwan Semiconductor Corporation 1.5SMC150C
- Part No.:
- 1.5SMC150C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150C.pdf
- Description:
- 1500W, 150V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,739
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Product details
Overview
1.5SMC150C from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 135–165 V breakdown voltage (VBR), 121 V working stand-off voltage (VWM), and 215 V maximum clamping voltage (VC) at 7.3 A peak impulse current - designed to protect power rails and I/O lines in telecom infrastructure and industrial control systems against ESD, lightning surges, and load-switching transients.
For engineers reviewing the 1.5SMC150C datasheet, 1.5SMC150C pinout, 1.5SMC150C application, or 1.5SMC150C equivalent, this page delivers verified electrical specs, thermal performance data, bidirectional variant clarification, clamping behavior under 10/1000 µs surge, and real-world design guidance for surge immunity compliance per ISO 7637-2 Pulse 1/2a/2b/3a/3b.
Technical Context
This TVS operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) and low leakage (<1 µA @ 121 V). Its 150°C max junction temperature and 50°C/W junction-to-ambient thermal resistance support high-reliability operation in ambient temperatures up to +125°C when mounted on standard FR-4 PCBs with recommended pad layout.
The device meets ISO 7637-2 for automotive transient immunity and complies with RoHS and halogen-free standards (IEC 61249-2-21). Polarity is marked by cathode band; it is not rated for bidirectional use unless specified with "CA" suffix - the "C" suffix here denotes unidirectional configuration per Taiwan Semiconductor's ordering convention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 135 V / 165 V - defines minimum and maximum voltage at which avalanche conduction begins reliably under 1 mA test current |
| VWM | 121 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPPM | 215 V at 7.3 A - clamped voltage during 10/1000 µs surge, limiting downstream circuit stress |
| PPK | 1500 W - peak pulse power handling capability for non-repetitive 1 ms pulses |
| IR @ VWM | <1 µA - ensures negligible standby current draw in high-impedance protection circuits |
| TJ max | +150 °C - enables operation in under-hood or enclosed industrial environments with adequate PCB copper area |
| RθJA | 50 °C/W - quantifies thermal resistance from junction to ambient, guiding heatsinking requirements |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Weight: 0.210 g. Meets UL 94V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected line (e.g., 120 V AC rectified rail or 48 V DC bus); conducts during reverse-biased surge |
| Cathode | Ground/reference side terminal | Connected to system ground or low-impedance return path; establishes unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over time and temperature, with <0.108 %/°C tempco for consistent clamping across -55°C to +150°C |
| Fast response time | <1.0 ps - limits voltage overshoot before clamping engages, critical for protecting fast logic and analog front-ends |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - suitable for automotive ECUs and industrial PLCs |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020) - allows unlimited floor life and reflow without baking preconditioning |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and end-of-life recycling requirements |
Applications
| Telecom Power Input Protection | Industrial 48 V DC Distribution |
|---|---|
Use Scenario: Protecting AC/DC converter inputs in base station power supplies exposed to lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rectified line and ground to clamp positive-going transients above 121 V while blocking normal 120 VRMS operation. Use Value: Limits peak voltage to ≤215 V during 10/1000 µs surges, preventing damage to bridge rectifiers and bulk capacitors rated for 200 V DC. |
Use Scenario: Safeguarding backplane power rails in programmable logic controllers where relay switching induces >1 kV spikes. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to shunt energy before reaching FPGA I/O banks and isolated DC/DC converters. Use Value: Absorbs 1500 W peak surge within 1 ms, maintaining rail integrity and avoiding brownout resets during field maintenance operations. |
| Automotive Body Control Module (BCM) | Smart Meter Voltage Monitoring Circuit |
Use Scenario: Securing LIN bus power supply pins in BCMs subjected to ISO 7637-2 Pulse 2b (battery disconnect transients). IC Role / Device Role / Timing Role: Unidirectional clamping device referenced to chassis ground, suppressing negative-going transients on 12 V supply lines. Use Value: Clamps to ≤215 V within sub-nanosecond, preventing latch-up in CAN/LIN transceivers and microcontroller reset circuitry. |
Use Scenario: Shielding precision voltage dividers and ADC reference inputs in utility meters connected to 230 V AC mains via isolation transformers. IC Role / Device Role / Timing Role: Front-end surge limiter on secondary-side 150 V-rated sensing node, operating below VWM during normal 120 VRMS conditions. Use Value: Leakage <1 µA avoids measurement offset drift; tight VBR tolerance (±10%) ensures repeatable trip threshold across production batches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Same VWM/VC ratings but lower PPK (600 W), DO-214AA (SMB) package (smaller footprint, higher RθJA) | Not suitable for ISO 7637-2 Pulse 1 (12 V system load dump); limited to lower-energy ESD and capacitive coupling events | Select only if surge energy is confirmed ≤600 W and board space constraints prohibit SMC footprint |
| 1.5KE150A | Through-hole TO-204AA (DO-41), same 150 V VWM, but slower response (>1 ns), higher leakage (~5 µA), no ISO 7637-2 validation | Requires wave soldering; unsuitable for automated SMT lines or high-frequency transient environments like CAN FD networks | Choose only for legacy through-hole designs where rework flexibility outweighs surge performance and manufacturability trade-offs |
Compared with SMBJ150A and 1.5KE150A, the 1.5SMC150C delivers 2.5× higher surge power handling, sub-nanosecond response, MSL Level 1 compatibility, and certified ISO 7637-2 immunity - making it the preferred choice for new SMT-based industrial and automotive power protection designs requiring robust, automated, and standards-compliant transient suppression.
Availability
1.5SMC150C is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, automotive body electronics, and smart metering applications requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for 1.5SMC150C 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 ISO 9001 and IATF 16949 certification for automotive-grade reliability.
The 1.5SMC series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting compliance with ISO 7637-2, AEC-Q101 stress testing, and industrial temperature range (-55°C to +150°C) operation.
FAQ
What does the "C" suffix indicate in 1.5SMC150C?
The "C" suffix in 1.5SMC150C denotes unidirectional configuration per Taiwan Semiconductor's ordering convention. It is not a bidirectional part - unlike variants with "CA" suffix (e.g., 1.5SMC150CA), the 1.5SMC150C has a defined anode-cathode polarity and clamps only reverse-biased transients. The cathode band marks the ground-reference terminal, and forward conduction occurs above ~3.5 V (typical VF at 50 A).
Is 1.5SMC150C compliant with ISO 7637-2, and which pulses does it cover?
Yes, 1.5SMC150C is explicitly validated for ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (supply line transients), and Pulse 3a/3b (capacitive coupling) per the manufacturer's datasheet. This makes it suitable for automotive electronic control units and industrial equipment interfacing with 12 V or 24 V battery systems where standardized surge immunity is required.
What is the maximum clamping voltage of 1.5SMC150C, and at what current is it measured?
The maximum clamping voltage (VC) of 1.5SMC150C is 215 V, measured at a peak impulse current (IPPM) of 7.3 A under the standard 10/1000 µs double-exponential surge waveform. This value represents worst-case voltage seen by downstream components during a full-rated 1500 W transient event.
Can 1.5SMC150C be used in bidirectional signal-line protection?
No - 1.5SMC150C is strictly unidirectional. For bidirectional protection (e.g., RS-485, USB, or Ethernet data lines), the "CA" variant (1.5SMC150CA) must be selected. Using 1.5SMC150C on AC-coupled or symmetrical lines risks forward conduction during normal signal swings and fails to suppress positive transients on the anode side.
What is the thermal resistance and how does it affect PCB layout for 1.5SMC150C?
The junction-to-ambient thermal resistance (RθJA) of 1.5SMC150C is 50°C/W. To maintain TJ ≤150°C at full 1500 W surge, the PCB must provide sufficient copper area (≥100 mm² per pad, internal planes recommended) and avoid thermal isolation. The datasheet specifies a suggested pad layout - deviating reduces derating margin and may cause premature failure under repeated surges.
1.5SMC150C 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC150C FAQ
1.How can I place an order for 1.5SMC150C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150C 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 1.5SMC150C reliable?
The price and inventory of 1.5SMC150C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150C is usually 5 days.
3.What payment methods are accepted for 1.5SMC150C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150C?
1.5SMC150C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150C 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 1.5SMC150C?
For technical support, including 1.5SMC150C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150C requirements.
6.How does Aetrix verify that 1.5SMC150C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150C 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 1.5SMC150C meets industry standards.
7.What is the process for return or replacement of 1.5SMC150C?
All 1.5SMC150C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150C, 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 1.5SMC150C part is unused and in its original packaging.
Return procedure for 1.5SMC150C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150C Tags
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