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Taiwan Semiconductor Corporation 1.5SMC11
- Part No.:
- 1.5SMC11
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11.pdf
- Description:
- 1500W, 11V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,733
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Product details
Overview
1.5SMC11 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 9.9–12.1 V breakdown voltage (VBR), 8.92 V working stand-off voltage (VWM), 16.2 V maximum clamping voltage (VC) at 97 A peak pulse current, and 1500 W peak pulse power rating at 1 ms.
For engineers reviewing the 1.5SMC11 datasheet, 1.5SMC11 pinout, 1.5SMC11 application, or 1.5SMC11 equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, low leakage (<1 µA at VWM), fast sub-1 ps response, and compatibility with automated SMT assembly on industrial and automotive PCBs.
Technical Context
This TVS operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR range (9.9–12.1 V @ 1 mA). Its glass-passivated junction ensures stable breakdown characteristics and low leakage, while the DO-214AB package provides robust thermal dissipation (RθJC = 15 °C/W) and meets UL 94V-0 flammability requirements.
The device complies with ISO 7637-2 for automotive transients and supports bidirectional use only when paired with a C or CA suffix variant (e.g., 1.5SMC11C); the 1.5SMC11 itself is strictly unidirectional, with cathode band marking and polarity-sensitive placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 9.9 V / 12.1 V @ 1 mA - defines reliable turn-on threshold across temperature and unit variation |
| VWM | 8.92 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 16.2 V @ 97 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPK | 1500 W - peak surge power handling capability per single 1 ms pulse |
| IR @ VWM | <1 µA - negligible standby current, critical for low-power battery-backed circuits |
| TJ max | +150 °C - enables operation in under-hood automotive or high-ambient industrial environments |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210 g mass and J-STD-002 solderability |
Pinout & Package
DO-214AB (SMC) is a two-terminal surface-mount package with cathode band marking. Terminals are matte tin-plated leads compliant with JESD 201 Class 2 whisker resistance and RoHS/halogen-free requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during clamping | Connected to system ground or lower-potential rail; carries full surge current during transient events |
| Cathode | Protected line input / high-side connection point | Connected to the line being protected (e.g., 12 V supply rail); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and <1 µA leakage at VWM, critical for precision power-rail protection |
| Sub-1 ps response time | Clamps ESD and fast transients before sensitive logic or analog circuitry sustains damage |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transients (Pulse 1/2a/2b/3a/3b), enabling drop-in use in vehicle ECUs |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow, reducing manufacturing cost and process complexity |
| UL 94V-0 molding compound | Prevents flame propagation in fault conditions, satisfying safety standards for industrial enclosures |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V CAN bus power rail against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping surges before they reach CAN transceiver and microcontroller power domains. Use Value: Limits peak voltage to ≤16.2 V during 97 A ISO 7637-2 Pulse 2b events, preventing latch-up or permanent damage to 5 V LDOs and CAN PHYs. | Use Scenario: Safeguarding 24 V digital input terminals from field-wiring induced surges and ESD during panel installation. IC Role / Device Role / Timing Role: Primary front-end protection element mounted directly at screw-terminal entry point, shunting transients to chassis ground. Use Value: Withstands 1500 W pulses without degradation, maintaining <1 µA leakage to preserve input threshold accuracy of optocoupler-based isolation stages. |
| Telecom Power Supply Front-End | Consumer Audio Equipment DC Rail |
Use Scenario: Guarding AC/DC adapter output against lightning-induced surges on long interconnect cables. IC Role / Device Role / Timing Role: Secondary-stage TVS on +12 V output rail, coordinated with upstream MOV and fuse for staged protection. Use Value: Clamps to 16.2 V within <1 ps, ensuring downstream DC-DC converters and PoE controllers remain within absolute maximum ratings. | Use Scenario: Protecting amplifier IC power pins from accidental 19 V adapter misconnection or hot-swap transients. IC Role / Device Role / Timing Role: Unidirectional clamp on VCC rail, placed adjacent to audio SoC to minimize loop inductance. Use Value: Delivers 1500 W surge immunity while adding only 0.210 g mass and zero standby power draw, preserving thermal budget in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | Same VBR range (10.5–11.6 V), but SMB package (smaller footprint, lower PPK = 600 W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or 2b | Select 1.5SMC11 when 1500 W surge rating and DO-214AB mechanical robustness are required. |
| 1.5KE11A | Through-hole TO-204AA (DO-41) package, identical electrical specs but no SMT compatibility | Requires wave soldering or hand assembly; incompatible with high-volume pick-and-place lines | Choose 1.5SMC11 for automated production, board space constraints, or thermal performance (RθJC = 15 °C/W vs. ~50 °C/W for DO-41). |
Compared with SMBJ11A and 1.5KE11A, the 1.5SMC11 uniquely combines 1500 W surge capacity, SMT-ready DO-214AB packaging, and ISO 7637-2 validation-making it optimal for automotive and industrial designs demanding both high energy handling and manufacturing scalability.
Availability
1.5SMC11 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, and telecom power supply front-ends requiring stable component supply and full compliance with AEC-Q200-referenced surge standards.
Supply support for 1.5SMC11 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-Q200-qualified product lines.
The 1.5SMC series was developed specifically for high-reliability surface-mount transient suppression in automotive and industrial environments, emphasizing robust clamping, low leakage, and automated assembly compatibility.
FAQ
What is the polarity configuration of the 1.5SMC11?
The 1.5SMC11 is a unidirectional TVS diode, marked with a cathode band indicating the terminal that connects to the protected line (e.g., 12 V rail), while the anode connects to ground. It conducts only during reverse overvoltage events and must be oriented correctly on the PCB per the DO-214AB marking diagram.
Does the 1.5SMC11 meet automotive transient immunity standards?
Yes, the 1.5SMC11 meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for protecting electronic control units in passenger vehicles and commercial vehicles against load dump, inductive switching, and battery disconnection transients.
What is the maximum clamping voltage of the 1.5SMC11 under surge conditions?
The 1.5SMC11 has a maximum clamping voltage (VC) of 16.2 V at 97 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across all units and ensures downstream components see no more than 16.2 V during standardized surge events.
Can the 1.5SMC11 be used in bidirectional applications?
No-the 1.5SMC11 is strictly unidirectional. For bidirectional protection, TSC offers the 1.5SMC11C or 1.5SMC11CA variants, which feature symmetrical breakdown in both directions and require different marking and layout considerations.
What is the thermal resistance profile of the 1.5SMC11 in its DO-214AB package?
The 1.5SMC11 exhibits a junction-to-case thermal resistance (RθJC) of 15 °C/W and a junction-to-ambient resistance (RθJA) of 50 °C/W at standard mounting conditions. These values enable reliable operation up to +150 °C junction temperature in thermally constrained layouts.
1.5SMC11 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):
- 8.92V
- Voltage - Breakdown (Min):
- 9.9V
- Voltage - Clamping (Max) @ Ipp:
- 16.2V
- Current - Peak Pulse (10/1000µs):
- 97A
- 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)
1.5SMC11 FAQ
1.How can I place an order for 1.5SMC11 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11 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 1.5SMC11 reliable?
The price and inventory of 1.5SMC11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11 is usually 5 days.
3.What payment methods are accepted for 1.5SMC11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11?
1.5SMC11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11 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 1.5SMC11?
For technical support, including 1.5SMC11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11 requirements.
6.How does Aetrix verify that 1.5SMC11 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11 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 1.5SMC11 meets industry standards.
7.What is the process for return or replacement of 1.5SMC11?
All 1.5SMC11 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11, 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 1.5SMC11 part is unused and in its original packaging.
Return procedure for 1.5SMC11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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