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Taiwan Semiconductor Corporation 1.5SMC11CA
- Part No.:
- 1.5SMC11CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CA.pdf
- Description:
- 1500W, 11V, 5%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:9,731
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Product details
Overview
1.5SMC11CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge protection in DC power rails and signal lines. It features a 10.5 V minimum breakdown voltage (VBR), 9.40 V working stand-off voltage (VWM), 1500 W peak pulse power (PPK), and clamps transients to ≤15.6 V at 100 A peak impulse current - deployed in telecom interface protection and industrial I/O circuits.
For engineers reviewing the 1.5SMC11CA datasheet, 1.5SMC11CA pinout, 1.5SMC11CA application, or 1.5SMC11CA equivalent, key selection criteria include bidirectional clamping capability, sub-1 ps response time, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<1 µA @ VWM), and thermal resistance (RθJA = 50 °C/W) for surface-mount surge immunity design.
Technical Context
The 1.5SMC11CA implements a glass-passivated silicon junction optimized for fast transient suppression with typical response time under 1.0 ps. Its bidirectional configuration enables symmetrical clamping across both polarities without external polarity management, supporting robust ESD and lightning-induced surge protection on unidirectional or AC-coupled lines.
It operates over -55 °C to +150 °C junction temperature range, with thermal performance defined by RθJC = 15 °C/W and RθJA = 50 °C/W. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, ensuring reliability in automated SMT assembly and harsh environmental deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 9.40 V - maximum continuous reverse/forward voltage before significant leakage begins |
| VC @ IPPM | ≤15.6 V at 100 A - defines worst-case clamped voltage during 10/1000 µs surge, critical for downstream IC survivability |
| PPK | 1500 W - peak non-repetitive power dissipation capacity per 1 ms pulse, enabling high-energy transient absorption |
| IR @ VWM | <1 µA - ultra-low leakage preserves signal integrity and battery life in always-on systems |
| TJ max | +150 °C - supports operation in under-hood automotive, industrial motor drives, and enclosed power supplies |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band marking for unidirectional variants; 1.5SMC11CA is bidirectional and marked with "DRJ" code - no polarity marking required. Leads are solderable per J-STD-002, compliant with JEDEC standards for reflow and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Both terminals function identically - connects across protected line and ground (or between differential lines) without orientation constraint |
| Case | Thermal & mechanical interface | Exposed copper pad area provides primary heat path to PCB; requires adequate copper pour for thermal derating |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under repeated surge stress |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| Sub-1 ps response time | Clamps ESD events (IEC 61000-4-2) and fast transients before sensitive circuitry reacts |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
| J-STD-020 MSL Level 1 | Zero floor-life limitation - can be stored indefinitely and placed directly into reflow without baking |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input/output channels in programmable logic controllers exposed to inductive kickback and field wiring surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed across each I/O terminal and chassis ground to clamp transients before they reach isolation amplifiers or microcontroller GPIOs. Use Value: Limits voltage to ≤15.6 V during 100 A surge, protecting 3.3 V/5 V logic interfaces and extending system uptime in factory automation environments. | Use Scenario: LIN bus and sensor supply lines in body control modules subject to battery disconnect/load dump and ESD from user interaction. IC Role / Device Role / Timing Role: Primary surge clamp on 12 V rail and LIN signal pair, operating bidirectionally to handle both positive and negative transients without polarity concerns. Use Value: Meets ISO 7637-2 Pulse 2a/3b requirements while maintaining <1 µA leakage - avoids battery drain in always-on vehicle modules. |
| Telecom Ethernet Surge Port | Consumer USB-C ESD Protection |
Use Scenario: Secondary-level surge protection on RJ45 Ethernet ports in PoE-powered switches and base stations. IC Role / Device Role / Timing Role: Parallel-connected TVS on each twisted pair (TX+/−, RX+/−) referenced to chassis ground, supplementing front-end gas discharge tubes. Use Value: Clamps induced lightning surges to safe levels (<16 V) within 1 ps, preserving PHY IC integrity and meeting IEC 61000-4-5 Level 4 immunity. | Use Scenario: VBUS and CC line protection in USB-C receptacles of portable speakers, monitors, and docking stations. IC Role / Device Role / Timing Role: Bidirectional clamp on 5–20 V power and 3.3 V CC signaling lines, handling hot-plug ESD and cable-induced transients. Use Value: Withstands ±15 kV contact ESD (IEC 61000-4-2) and maintains <1 µA leakage at 9.4 V - prevents false CC detection and power delivery negotiation failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA (Bourns) | Same DO-214AA (SMB) package; 1500 W rating but lower IPPM (102 A) and higher VC (18.2 V) | Less effective clamping margin for 3.3 V/5 V interfaces due to 2.6 V higher VC | Select when board space allows larger SMB footprint and higher clamping voltage is acceptable |
| 1.5KE11CA (Littelfuse) | Through-hole DO-15 package; identical VBR/VC specs but 1000 W PPK, not 1500 W | Not suitable for high-energy automotive or industrial surge events requiring full 1500 W absorption | Choose only for legacy through-hole designs where rework to SMT is impractical |
Compared with SMBJ11CA and 1.5KE11CA, the 1.5SMC11CA delivers superior clamping performance (15.6 V vs. 18.2 V/17.0 V) and higher surge energy handling (1500 W) in a compact DO-214AB footprint - making it optimal for space-constrained, high-reliability DC rail protection.
Availability
1.5SMC11CA is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom Ethernet surge ports requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC11CA 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 - headquartered in Hsinchu, Taiwan, with global distribution and AEC-Q200-qualified product lines.
The 1.5SMCxxCA series is part of TSC's high-power surface-mount TVS platform, engineered specifically for automotive, industrial, and telecom applications demanding ISO 7637-2 compliance, low clamping voltage, and robust SMT manufacturability.
FAQ
What is the breakdown voltage range for the 1.5SMC11CA?
The 1.5SMC11CA has a guaranteed breakdown voltage (VBR) range of 10.5 V to 11.6 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable turn-on behavior during overvoltage events and supports precise system-level surge margining - critical for protecting 12 V automotive and industrial control circuits where the 1.5SMC11CA serves as the primary clamping element.
Is the 1.5SMC11CA unidirectional or bidirectional?
The 1.5SMC11CA is a bidirectional TVS diode, indicated by the "CA" suffix per TSC's ordering convention. It provides symmetrical clamping in both polarities - meaning it functions identically whether voltage is applied anode-to-cathode or cathode-to-anode. This eliminates orientation constraints during placement and makes the 1.5SMC11CA ideal for AC-coupled lines, differential buses like LIN or RS-485, and any application where polarity reversal or bipolar transients are possible.
What is the maximum clamping voltage of the 1.5SMC11CA at its rated peak current?
The 1.5SMC11CA clamps to a maximum of 15.6 V at its rated peak impulse current (IPPM) of 100 A, tested with the standard 10/1000 µs waveform per Fig.5 in the datasheet. This clamping voltage directly determines the protection level afforded to downstream components - for example, ensuring that 5 V logic ICs or USB-C PHYs remain below their absolute maximum ratings during surge events, which is why the 1.5SMC11CA is selected for high-integrity interface protection.
Does the 1.5SMC11CA meet automotive surge immunity standards?
Yes, the 1.5SMC11CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load release), Pulse 2b (supply interruption), and Pulses 3a/3b (switching noise), as explicitly stated in the TSC datasheet. Its 1500 W peak power rating, low clamping voltage, and -55 °C to +150 °C operating range make the 1.5SMC11CA suitable for under-hood and body-control module applications - where it is commonly deployed to protect CAN/LIN transceivers and sensor supply rails.
What is the thermal resistance profile of the 1.5SMC11CA?
Per TSC's thermal performance data, the 1.5SMC11CA has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W and a junction-to-case resistance (RθJC) of 15 °C/W, measured under standard JEDEC conditions. These values assume proper PCB copper pour and reflow profile adherence - essential for sustaining repetitive surge duty cycles. Engineers must account for this RθJA when designing thermal relief in high-power surge scenarios to prevent 1.5SMC11CA junction temperature from exceeding 150 °C.
1.5SMC11CA 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 100A
- 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)
1.5SMC11CA FAQ
1.How can I place an order for 1.5SMC11CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CA 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 1.5SMC11CA reliable?
The price and inventory of 1.5SMC11CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11CA is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CA?
1.5SMC11CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CA 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 1.5SMC11CA?
For technical support, including 1.5SMC11CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CA requirements.
6.How does Aetrix verify that 1.5SMC11CA is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CA 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 1.5SMC11CA meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CA?
All 1.5SMC11CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CA, 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 1.5SMC11CA part is unused and in its original packaging.
Return procedure for 1.5SMC11CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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