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Taiwan Semiconductor Corporation 1.5SMC11CAH
- Part No.:
- 1.5SMC11CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CAH.pdf
- Description:
- 1500W, 11V, 5%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:8,669
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Product details
Overview
1.5SMC11CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 10.5–11.6 V at 1 mA test current, working stand-off voltage 9.40 V, clamping voltage 15.6 V at 100 A peak impulse current, and AEC-Q101 qualification for automotive-grade surge protection in power rails and I/O lines.
For engineers reviewing the 1.5SMC11CAH datasheet, 1.5SMC11CAH pinout, 1.5SMC11CAH application, or 1.5SMC11CAH equivalent, this page delivers verified electrical specs, thermal performance, ISO 7637-2 compliance details, polarity marking, and real-world ESD/switching-transient use cases - all confirmed from Taiwan Semiconductor's official B2207 datasheet.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, enabling robust protection of AC-coupled or floating signal paths without polarity dependency. Its glass-passivated junction ensures stable clamping under repetitive transients, and its <1.0 ps response time enables suppression before sensitive downstream circuitry reacts.
Rated for 1500 W peak pulse power (10/1000 µs waveform), it sustains 100 A peak impulse current while limiting voltage to ≤15.6 V - critical for safeguarding 12 V automotive ECUs, industrial sensor interfaces, and telecom line cards against load dump and ESD per IEC 61000-4-2 and ISO 7637-2 Pulse 1/2a/2b/3a/3b.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 10.5 V / 11.6 V @ 1 mA - defines reliable conduction onset across temperature and unit variation |
| VWM | 9.40 V - maximum continuous reverse voltage before leakage exceeds 1 µA, ensuring no false triggering on 12 V nominal rails |
| VC @ IPPM | 15.6 V @ 100 A - clamped voltage during worst-case 10/1000 µs surge, keeping protected ICs below absolute max ratings |
| PPK | 1500 W - peak pulse power handling capacity, supporting high-energy transients like ISO 7637-2 Pulse 1 (inductive switch-off) |
| TJ max | +150 °C - junction temperature limit enabling operation in under-hood automotive environments |
| RθJA | 50 °C/W - thermal resistance from junction to ambient, informing heatsinking needs for sustained surge duty cycles |
| Leakage IR | <1 µA @ 9.40 V - negligible standby current, preserving battery life in always-on systems |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band (bidirectional operation means band denotes center tap reference, not unidirectional anode/cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient clamp terminals | Interchangeable terminals - voltage clamping occurs identically regardless of polarity applied across device |
| Cathode band marking | Reference point for physical orientation | Used for automated placement alignment; does not indicate functional polarity in CAH-series bidirectional devices |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and ESD - suitable for engine control, body modules, and ADAS sensors |
| ISO 7637-2 compliant | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) - eliminates need for external filter staging in 12 V vehicle networks |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage under humidity and thermal cycling - critical for 15+ year automotive service life |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement before reflow - supports standard SMT assembly without special handling |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive - meets environmental compliance for global OEM supply chains |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN bus and switched 12 V power inputs in door modules and lighting controllers from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point, shunting transients before they reach MCU GPIOs or power regulators. Use Value: Clamps to ≤15.6 V during 100 A ISO 7637-2 Pulse 1 events, preventing latch-up or overvoltage damage to 16 V-rated automotive MCUs and LDOs. |
Use Scenario: Safeguarding CAN FD transceivers (e.g., TJA1057) on factory automation nodes exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Common-mode TVS across CAN_H/CAN_L differential pair, referenced to chassis ground to suppress asymmetric surges. Use Value: Symmetric 10.5–11.6 V breakdown enables equal clamping in both directions, maintaining CAN common-mode range integrity during ±25 kV ESD contact discharge. |
| Telecom DSL Line Interface | Consumer Smart Meter Power Input |
Use Scenario: Front-end protection of ADSL/VDSL line drivers against lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary surge arrestor mounted before hybrid transformer and line driver IC, absorbing >90% of 10/1000 µs energy. Use Value: 1500 W peak power rating handles up to 1.2 kV/500 A lightning surges per ITU-T K.20/K.21, reducing need for secondary MOV stages. |
Use Scenario: Input rail protection for single-phase smart meters connected to 230 VAC mains via bridge rectifier and bulk capacitor. IC Role / Device Role / Timing Role: Secondary clamp after fuse and primary MOV, suppressing fast-rising switching transients from relay coil de-energization. Use Value: Sub-1 ps response time captures transients before MOVs fully activate, lowering let-through voltage to <16 V for downstream DC-DC converters. |
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 | Same DO-214AA (SMB) package but lower 600 W PPK; VBR = 12.2–13.5 V; VC = 18.2 V @ 33 A | Lower surge capacity limits use to non-automotive, low-energy interfaces (e.g., USB, RS-485) | Select when board space allows smaller SMB footprint and system-level surge energy is ≤600 W |
| 1.5KE11CA | Through-hole DO-15 package; same 1500 W rating but higher RθJA (75 °C/W); VC = 17.5 V @ 86 A | Not suitable for high-density SMT designs; requires wave solder or hand-solder process | Choose only for legacy through-hole assemblies or where thermal mass of leadframe improves sustained pulse handling |
Compared with 1.5SMC11CAH, SMBJ11CA offers reduced footprint but sacrifices 60% peak power handling and increases clamping voltage by 1.9 V, while 1.5KE11CA retains full 1500 W capability but forfeits SMT manufacturability and raises thermal resistance by 50% - making 1.5SMC11CAH optimal for new automotive and industrial SMT designs requiring AEC-Q101 and ISO 7637-2 compliance.
Availability
1.5SMC11CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial fieldbus protection, telecom line interface circuits, and smart meter power input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC11CAH 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, and rectifiers, with ISO/TS 16949 certification and global distribution.
The 1.5SMCxxCAH series was designed specifically for AEC-Q101-compliant, high-reliability transient suppression in automotive and industrial environments - emphasizing low clamping voltage, fast response, and robust packaging for automated SMT assembly.
FAQ
What is the clamping voltage of the 1.5SMC11CAH under a 100 A transient?
The 1.5SMC11CAH clamps to a maximum of 15.6 V when subjected to a 100 A peak impulse current (10/1000 µs waveform), as specified in Taiwan Semiconductor's B2207 datasheet. This value ensures protected downstream components - such as 16 V-rated automotive MCUs or CAN transceivers - remain within safe operating voltage limits during ISO 7637-2 Pulse 1 events. The 1.5SMC11CAH achieves this with minimal voltage overshoot due to its sub-1 ps response time.
Is the 1.5SMC11CAH suitable for bidirectional signal line protection?
Yes, the 1.5SMC11CAH is explicitly designed for bidirectional operation, as indicated by the "CAH" suffix and confirmed in the datasheet's "Devices for Bipolar Applications" section. Its symmetrical breakdown (10.5–11.6 V in both directions) and identical clamping behavior make it ideal for protecting differential interfaces like CAN, RS-485, or Ethernet PHYs where polarity reversal or AC coupling is present - unlike unidirectional "H" variants which require correct orientation.
Does the 1.5SMC11CAH meet AEC-Q101 reliability standards?
Yes, the 1.5SMC11CAH is AEC-Q101 qualified per Taiwan Semiconductor's official documentation (Version B2207). It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥8 kV, CDM ≥1 kV), validating its suitability for under-hood and chassis-mounted automotive applications where long-term reliability under thermal and electrical stress is mandatory - a key differentiator from commercial-grade TVS diodes.
What is the maximum steady-state power dissipation for the 1.5SMC11CAH?
The 1.5SMC11CAH has a steady-state power dissipation (PD) rating of 6.5 W at TA = 25°C, as defined in the Absolute Maximum Ratings table. This value reflects continuous DC or low-frequency power handling capability - distinct from its 1500 W peak pulse rating. In practice, the 1.5SMC11CAH should not be operated near this limit continuously; its primary function is transient suppression, not steady-state power regulation.
How does the 1.5SMC11CAH compare to the 1.5SMC11AH in terms of electrical performance?
The 1.5SMC11CAH differs from the 1.5SMC11AH in polarity configuration: "CAH" denotes bidirectional operation, while "AH" is unidirectional. Electrically, the 1.5SMC11CAH maintains symmetrical VBR (10.5–11.6 V) and VC (15.6 V @ 100 A) in both directions, whereas the 1.5SMC11AH only clamps in reverse bias and conducts forward current above ~3.5 V. Thus, the 1.5SMC11CAH is required for AC-coupled or floating node protection, while the 1.5SMC11AH suits DC power rail applications with defined polarity.
1.5SMC11CAH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC11CAH FAQ
1.How can I place an order for 1.5SMC11CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CAH 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 1.5SMC11CAH reliable?
The price and inventory of 1.5SMC11CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CAH?
1.5SMC11CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CAH 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 1.5SMC11CAH?
For technical support, including 1.5SMC11CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CAH requirements.
6.How does Aetrix verify that 1.5SMC11CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CAH 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 1.5SMC11CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CAH?
All 1.5SMC11CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CAH, 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 1.5SMC11CAH part is unused and in its original packaging.
Return procedure for 1.5SMC11CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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