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Taiwan Semiconductor Corporation 1.5SMC11C
- Part No.:
- 1.5SMC11C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11C.pdf
- Description:
- 1500W, 11V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,639
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Product details
Overview
1.5SMC11C from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 11V breakdown voltage (min 9.9V, max 12.1V), 9.72V working stand-off voltage, and 16.2V clamping voltage at 97A peak pulse current. It protects power rails and I/O lines in telecom interfaces and industrial control inputs against ESD and lightning-induced transients.
For engineers reviewing the 1.5SMC11C datasheet, 1.5SMC11C pinout, 1.5SMC11C application, or 1.5SMC11C equivalent, this page delivers verified electrical specs, thermal resistance data, clamping behavior under 10/1000μs surge, polarity marking guidance, and RoHS/halogen-free compliance status for rapid circuit protection design validation.
Technical Context
The 1.5SMC11C uses a glass-passivated silicon junction optimized for fast transient response (<1.0ps), low leakage (<1μA at 9.72V), and stable clamping across -55°C to +150°C junction temperature. Its unidirectional configuration provides asymmetric protection with cathode-band polarity marking and forward voltage of 3.5V at 50A.
Thermal performance is defined by 15°C/W junction-to-case and 50°C/W junction-to-ambient resistance, enabling reliable operation at 6.5W steady-state dissipation. It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump immunity and complies with JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 9.9V / 12.1V - defines guaranteed breakdown range at 1mA test current; sets lower bound for reliable turn-on during overvoltage events |
| VWM | 9.72V - maximum continuous reverse operating voltage; must exceed system nominal rail voltage to prevent leakage conduction |
| VC @ IPPM | 16.2V at 97A - clamping voltage under 10/1000μs surge; determines protected circuit's maximum transient exposure level |
| PPK | 1500W - peak pulse power rating; defines single-event energy handling capability per Fig.5 waveform |
| IR @ VWM | <1μA - reverse leakage at stand-off voltage; ensures minimal standby power loss and signal integrity in high-impedance nodes |
| TJ max | +150°C - maximum junction temperature; supports operation in enclosed industrial enclosures without active cooling |
| RθJC | 15°C/W - thermal resistance from junction to case; enables accurate PCB copper pour sizing for thermal management |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode band marked on one end for unidirectional polarity identification. Weight: 0.210g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (reverse-biased side) | Connected to protected line; conducts surge current to ground when VLINE exceeds VWM |
| Cathode | Reference node (ground or supply rail) | Marked with band; ties to system ground or positive rail depending on protection topology (e.g., rail-to-rail or line-to-ground) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling stress |
| Fast response time <1.0ps | Clamps ESD events before sensitive ICs experience latch-up or gate oxide damage |
| ISO 7637-2 compliance | Validates robustness against automotive load-dump and inductive switching transients without external filtering |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU environmental directives for green manufacturing and end-of-life processing |
| J-STD-020 Level 1 MSL | Allows unlimited floor life and reflow compatibility without baking, reducing assembly cost and risk |
Applications
| Telecom Line Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting RS-485 transceivers and Ethernet PHYs from induced surges on outdoor cabling or shared grounding paths. IC Role / Device Role: Unidirectional TVS placed between signal line and ground, shunting transients before they reach the transceiver ESD structure. Use Value: Clamps 1kV/0.5kA surge to ≤16.2V, preventing damage to 3.3V/5V logic-level receivers while maintaining signal integrity below VWM. | Use Scenario: Safeguarding 24V DC digital input channels in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role: Line-to-ground TVS on each input channel, absorbing repetitive 100ns–1ms transients from inductive loads. Use Value: Withstands ≥100,000 surges at rated PPK, eliminating need for fuse replacement or input module downtime in factory automation. |
| Automotive Body Control Module (BCM) Power Rail | Consumer Appliance Motor Drive Board |
Use Scenario: Suppressing load-dump transients (up to 35V, 100ms) on 12V supply rails feeding microcontrollers and CAN transceivers. IC Role / Device Role: Unidirectional TVS connected anode-to-rail, cathode-to-ground, clamping excess voltage during alternator regulation failure. Use Value: Meets ISO 7637-2 Pulse 5a requirements with 1500W rating and 15°C/W RθJC, enabling direct mounting on power plane copper. | Use Scenario: Shielding MCU GPIOs and Hall-effect sensors from commutation spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role: Localized TVS at motor driver output stage, placed within 2mm of MOSFET source/drain pins. Use Value: Sub-1ps response captures <10ns edge transients; 9.72V VWM avoids false triggering during 12V PWM drive transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | 600W rating, DO-214AA (SMB) package, 12.2V VC @ 49A | Limited to lower-energy transients; not suitable for ISO 7637-2 Pulse 5a or 1.5kW surges | Select when board space is constrained and peak surge energy remains ≤600W |
| 1.5KE11C | Through-hole TO-277 package, identical 1500W rating and VBR/VC specs | Requires wave soldering or hand assembly; incompatible with automated SMT lines | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ11A and 1.5KE11C, the 1.5SMC11C uniquely combines 1500W SMT capability, DO-214AB thermal performance (RθJC = 15°C/W), and ISO 7637-2 certification-making it the optimal choice for high-reliability automated production of automotive and industrial power electronics.
Availability
1.5SMC11C is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive body control modules requiring stable component supply and full compliance with ISO 7637-2 and RoHS standards.
Supply support for 1.5SMC11C 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, specializing in TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The 1.5SMC series was engineered specifically for high-power, surface-mount transient suppression in harsh environments-balancing clamping precision, thermal robustness, and automated assembly compatibility across 6.8V–200V working voltages.
FAQ
What is the polarity configuration of the 1.5SMC11C?
The 1.5SMC11C is a unidirectional TVS diode with cathode band marking on the package. When installed, the banded end connects to ground (or reference rail), and the anode connects to the line being protected. This configuration allows it to clamp positive transients to ground while blocking normal reverse-bias operating voltage up to 9.72V.
Does the 1.5SMC11C meet automotive transient immunity standards?
Yes, the 1.5SMC11C meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for coupled transient immunity. Its 1500W peak power rating and 16.2V clamping voltage at 97A enable effective suppression of load-dump and inductive-switching transients commonly encountered in 12V automotive systems.
What is the maximum allowable junction temperature for continuous operation of the 1.5SMC11C?
The 1.5SMC11C has a maximum junction temperature (TJ) of +150°C. For continuous operation, derating begins above 25°C ambient per the pulse derating curve in Fig.2; at 100°C ambient, the device supports ≤3.25W steady-state dissipation. Thermal design must account for its 15°C/W junction-to-case resistance.
How does the 1.5SMC11C differ from the 1.5SMC11CA variant?
The 1.5SMC11C is unidirectional, while the 1.5SMC11CA is bidirectional-designed for AC-coupled or differential signal lines where transients may swing both polarities. The 1.5SMC11CA has symmetric breakdown (10.5V–11.6V) and no cathode band; the 1.5SMC11C has asymmetric behavior and requires correct orientation during placement.
Is the 1.5SMC11C compatible with lead-free reflow soldering processes?
Yes, the 1.5SMC11C features matte tin-plated leads compliant with J-STD-002 and is qualified for standard Pb-free reflow profiles (peak 260°C, 10s max). Its J-STD-020 Level 1 moisture sensitivity rating permits unlimited floor life without baking prior to assembly.
1.5SMC11C 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):
- 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)
1.5SMC11C FAQ
1.How can I place an order for 1.5SMC11C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11C 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 1.5SMC11C reliable?
The price and inventory of 1.5SMC11C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11C is usually 5 days.
3.What payment methods are accepted for 1.5SMC11C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11C?
1.5SMC11C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11C 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 1.5SMC11C?
For technical support, including 1.5SMC11C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11C requirements.
6.How does Aetrix verify that 1.5SMC11C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11C 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 1.5SMC11C meets industry standards.
7.What is the process for return or replacement of 1.5SMC11C?
All 1.5SMC11C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11C, 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 1.5SMC11C part is unused and in its original packaging.
Return procedure for 1.5SMC11C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11C Tags
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