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Taiwan Semiconductor Corporation 1.5SMC150CA
- Part No.:
- 1.5SMC150CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CA.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,182
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Product details
Overview
1.5SMC150CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It delivers 1500W peak pulse power, clamps transients up to 215V at 7.3A, and features a 150V breakdown voltage (min 135V, max 165V) with <1μA leakage at 121V working stand-off voltage. It is used in telecom line cards, industrial I/O modules, and automotive body control units to protect RS-485 transceivers and microcontroller GPIOs.
For engineers reviewing the 1.5SMC150CA datasheet, 1.5SMC150CA pinout, 1.5SMC150CA application, or 1.5SMC150CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AB package compatibility, 215V max clamping voltage at rated surge current, thermal resistance (RθJA = 50°C/W), and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1.0 ps) and low capacitance, enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5). Its bidirectional configuration allows symmetrical clamping on AC-coupled or floating lines without polarity concerns.
The device operates across –55°C to +150°C junction temperature range, with thermal performance defined by RθJC = 15°C/W and RθJA = 50°C/W. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 135 V / 165 V - Ensures reliable triggering above system operating voltage while maintaining margin against false clamping |
| VWM | 121 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage (<1 µA) |
| VC @ IPPM | 215 V - Clamped voltage during 10/1000 µs surge at 7.3 A; defines worst-case overvoltage seen by protected circuit |
| PPK | 1500 W - Peak pulse power handling per single 10/1000 µs waveform; supports automotive load-dump and ISO 7637-2 Pulse 5a |
| IPPM | 7.3 A - Maximum non-repetitive peak surge current; determines minimum PCB trace width and fuse coordination |
| TJ max | +150 °C - Enables operation in under-hood automotive or enclosed industrial enclosures without derating |
| RθJA | 50 °C/W - Specifies thermal rise from junction to ambient; informs heatsinking requirements for repetitive surge events |
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 dependency - simplifies layout and eliminates orientation errors |
| Case (cathode band absent) | Thermal and mechanical interface | Exposed copper pad on underside provides primary heat conduction path to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled interfaces (e.g., CAN, RS-485) without external polarity management or dual-device placement |
| 1500W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 12V systems without failure or parameter shift |
| <1.0 ps response time | Clamps ESD events before sensitive ICs experience latch-up or gate oxide damage - critical for USB, HDMI, and Ethernet PHYs |
| Moisture Sensitivity Level 1 | Zero bake requirement prior to reflow; compatible with standard SMT production flow without special handling |
| RoHS & halogen-free | Meets IPC-1752A material declaration requirements and EU Directive 2015/863 for restricted substances |
Applications
| Industrial PLC Analog Input | Automotive Body Control Module |
|---|---|
Use Scenario: Protects 4–20 mA current-loop inputs from induced surges on long field wiring in factory automation cabinets. IC Role / Device Role: Primary overvoltage clamp placed directly at terminal block entry, upstream of precision op-amp front-end. Use Value: Limits input voltage to ≤215 V during 1 kV/500 A surge (10/1000 µs), preventing op-amp saturation and ADC saturation errors. |
Use Scenario: Shields LIN bus transceiver and microcontroller I/O pins from battery line transients during jump-start or alternator load dump. IC Role / Device Role: Bidirectional TVS on LIN data line and VCC rail, referenced to chassis ground. Use Value: Clamps 12 V rail to ≤215 V during ISO 7637-2 Pulse 5a (120 V, 100 ms), avoiding MCU brown-out reset or internal LDO failure. |
| Telecom DSL Line Interface | Medical Patient Monitor ECG Lead Port |
Use Scenario: Guards ADSL/VDSL line drivers and receivers against lightning-induced common-mode surges on twisted-pair telephone lines. IC Role / Device Role: Paired bidirectional TVS devices on tip/ring lines, combined with common-mode choke. Use Value: Maintains signal integrity up to 30 MHz while suppressing >1 kV surges - meets ITU-T K.21 basic protection level. |
Use Scenario: Safeguards isolated ECG amplifier inputs from electrostatic discharge during patient connection and cable handling. IC Role / Device Role: First-stage transient limiter on differential ECG leads, placed before high-impedance instrumentation amplifier. Use Value: Limits ESD voltage to <215 V (per IEC 61000-4-2 ±8 kV contact), preserving amplifier CMRR and preventing input stage damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA (Bourns) | Same DO-214AA package; lower PPK = 600 W; VC = 243 V @ 2.5 A | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy ESD/lightning scenarios | Select when board space is constrained and surge energy is ≤600 W - requires verification of clamping margin vs. protected IC abs max ratings |
| SMCJ150CA (Littelfuse) | Identical DO-214AB package; same 1500 W rating; VC = 219 V @ 7.2 A - 4 V higher clamping than 1.5SMC150CA | Acceptable where 4 V extra clamping headroom does not violate downstream IC tolerance | Drop-in alternative if sourcing flexibility is required; verify thermal performance (RθJA = 55°C/W vs. 50°C/W) in high-ambient designs |
Compared with SMBJ150CA and SMCJ150CA, the 1.5SMC150CA offers the lowest clamping voltage (215 V) among DO-214AB 150 V bidirectional TVS diodes and superior thermal resistance (50°C/W), making it optimal for space-constrained, high-surge industrial and automotive applications where voltage margin and thermal headroom are critical.
Availability
1.5SMC150CA is available at Aetrix Electronics and suitable for industrial PLC analog inputs, automotive body control modules, telecom DSL line interfaces, and medical ECG lead ports requiring stable component supply and full compliance with ISO 7637-2 and IEC 61000-4-2 standards.
Supply support for 1.5SMC150CA 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 qualified product lines.
The 1.5SMCxxCA series was developed for high-reliability, high-power transient suppression in automotive, industrial, and telecom infrastructure - emphasizing robustness, tight parametric distribution, and seamless SMT manufacturability.
FAQ
What is the maximum clamping voltage of the 1.5SMC150CA under rated surge conditions?
The 1.5SMC150CA exhibits a maximum clamping voltage (VC) of 215 V when subjected to its rated peak pulse current (IPPM = 7.3 A) using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is the 1.5SMC150CA unidirectional or bidirectional, and how does that affect PCB layout?
The 1.5SMC150CA is a bidirectional TVS diode, indicated by the "CA" suffix. It has symmetrical electrical characteristics in both directions, eliminating polarity marking and orientation constraints. This allows flexible placement on differential or AC-coupled lines - such as RS-485 or CAN - without requiring matching anode/cathode routing or adding series blocking diodes.
Does the 1.5SMC150CA meet automotive surge immunity standards like ISO 7637-2?
Yes, the 1.5SMC150CA is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test waveforms. Its 1500 W peak power rating and 215 V clamping voltage enable compliance with Pulse 5a (load dump) when applied with appropriate external impedance - verified in Taiwan Semiconductor's application documentation for 12 V automotive systems.
What is the thermal resistance from junction to ambient (RθJA) for the 1.5SMC150CA, and how should it be used in layout?
The 1.5SMC150CA has a typical junction-to-ambient thermal resistance (RθJA) of 50°C/W under standard JEDEC PCB conditions (2s2p copper). To maintain TJ ≤150°C during repetitive surges, designers must ensure adequate copper area (≥100 mm² per side) connected to both terminals, especially the thermal pad, and avoid excessive trace length or narrow connections that increase thermal impedance.
How does the 1.5SMC150CA differ from the 1.5SMC150A variant?
The 1.5SMC150A is unidirectional, while the 1.5SMC150CA is bidirectional - confirmed by the "CA" suffix and specification notes stating "electrical characteristics apply in both directions." The 1.5SMC150CA has identical VBR, VWM, and PPK ratings but enables symmetrical clamping essential for AC or floating signal lines, unlike the 1.5SMC150A which requires correct polarity alignment.
1.5SMC150CA 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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.6A
- 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)
1.5SMC150CA FAQ
1.How can I place an order for 1.5SMC150CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CA 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 1.5SMC150CA reliable?
The price and inventory of 1.5SMC150CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150CA is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CA?
1.5SMC150CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CA 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 1.5SMC150CA?
For technical support, including 1.5SMC150CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CA requirements.
6.How does Aetrix verify that 1.5SMC150CA is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CA 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 1.5SMC150CA meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CA?
All 1.5SMC150CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CA, 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 1.5SMC150CA part is unused and in its original packaging.
Return procedure for 1.5SMC150CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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