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Taiwan Semiconductor Corporation 1.5SMC11CH
- Part No.:
- 1.5SMC11CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CH.pdf
- Description:
- 1500W, 11V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,977
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Product details
Overview
1.5SMC11CH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 11V breakdown voltage (min 9.9V, max 12.1V), 1500W peak pulse power rating, 16.2V maximum clamping voltage at 97A peak impulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5SMC11CH datasheet, 1.5SMC11CH pinout, 1.5SMC11CH application, or 1.5SMC11CH equivalent, this device is selected for ESD and load-dump immunity in CAN/LIN bus interfaces, DC-DC converter inputs, and battery-connected control modules where fast sub-1ps response and low leakage (<1µA @ 9.4V) are critical.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - enabling robust protection against bipolar transients like ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b without polarity sensitivity. Its glass-passivated junction ensures stable VBR and low temperature coefficient (0.075%/°C).
Thermally, it delivers RθJA = 50°C/W and RθJC = 15°C/W in the DO-214AB (SMC) package, supporting sustained operation up to TJ = +150°C. The 1.5SMC11CH is rated for 200A non-repetitive forward surge (IFSM) and meets 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 conduction onset across production lot; used to set margin above system working voltage |
| VWM | 9.4V - maximum continuous reverse/forward operating voltage before significant leakage begins |
| VC @ IPPM | 16.2V @ 97A - clamping voltage during 10/1000µs surge; determines protected circuit's peak stress level |
| PPK | 1500W - peak pulse power handling per single 10/1000µs transient; enables immunity to ISO 7637-2 Pulse 5a/b |
| IR @ VWM | <1µA - ultra-low blocking leakage ensures minimal standby power loss in always-on systems |
| TJ max | +150°C - junction temperature limit permitting use in under-hood automotive environments |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with two coplanar matte tin-plated leads; cathode band omitted (bidirectional symmetry); polarity not applicable; weight ≈ 0.210g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path terminal | Either lead serves as input/output for transient energy; no polarity-dependent mounting required |
| Case (plastic body) | Thermal and mechanical interface | Provides thermal path to PCB copper; requires adequate copper pour for RθJA derating compliance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| ISO 7637-2 compliant | Withstands defined load-dump and coupled transient waveforms (Pulse 1/2a/2b/3a/3b) without degradation |
| Sub-1ps response time | Clamps within <1 picosecond - faster than most IC-level ESD structures, protecting downstream logic before damage occurs |
| Glass passivated junction | Ensures long-term VBR stability and low leakage drift over temperature and lifetime |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - suitable for green manufacturing and export compliance |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12V supply rail of BCM microcontroller from alternator load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input; absorbs >1500W surges without failure. Use Value: Enables compliance with ISO 16750-2 and prevents MCU brownout or latch-up during vehicle cranking events. |
Use Scenario: Safeguarding 24V digital input channels against field-wiring transients and ground bounce in factory automation. IC Role / Device Role / Timing Role: Front-end transient suppressor before optocoupler or Schmitt-trigger input stage. Use Value: Reduces false triggering and extends input circuit lifetime by limiting voltage to ≤16.2V during 1kV/500A surge events. |
| Automotive LIN Bus Transceiver | DC-DC Converter Input Stage |
Use Scenario: Bidirectional protection of LIN physical layer (VPIN/VBAT) against ESD and battery reversal coupling. IC Role / Device Role / Timing Role: Symmetric clamping element across LIN signal and supply lines; no polarity orientation needed. Use Value: Maintains LIN signal integrity during ±8kV contact ESD (IEC 61000-4-2) while adding <1pF parasitic capacitance. |
Use Scenario: Input-side surge suppression for 48V-to-12V buck converters in telecom power systems. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges on primary-side electrolytic capacitor input. Use Value: Limits peak voltage to 16.2V, preventing overvoltage stress on MOSFET gate oxide and controller IC supply pins. |
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; lower PPK = 600W; VC = 18.2V @ 33A | Limited to lower-energy transients (e.g., IEC 61000-4-5 2nd edition); unsuitable for ISO 7637-2 Pulse 5 | Select when board space is constrained and surge threat level is below 1kW |
| 1.5KE11CA | Through-hole DO-15 package; PPK = 1500W; VC = 18.2V @ 82.5A; higher RθJA (~65°C/W) | Requires through-hole assembly; less suitable for automated SMT lines; higher thermal resistance limits high-duty-cycle use | Select only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ11CA and 1.5KE11CA, the 1.5SMC11CH offers superior surge robustness in a compact SMT package with lower clamping voltage and AEC-Q101 validation - making it the preferred choice for automotive and high-reliability industrial power rail protection.
Availability
1.5SMC11CH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, and DC-DC converter designs requiring stable component supply, AEC-Q101 compliance, and high-energy transient immunity.
Supply support for 1.5SMC11CH 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 certification capability.
The 1.5SMCxxCH series was developed specifically for automotive-grade bidirectional surge protection, targeting ISO 7637-2 compliance and under-hood thermal resilience in modern vehicle ECUs and power systems.
FAQ
What does the "CH" suffix indicate in 1.5SMC11CH?
The "CH" suffix denotes a bidirectional configuration with symmetrical clamping behavior in both polarities. Unlike unidirectional variants (e.g., 1.5SMC11H), the 1.5SMC11CH has identical VBR, VC, and IPPM specifications for positive and negative transients - eliminating polarity marking and simplifying layout in differential or floating-rail applications.
Is 1.5SMC11CH compatible with lead-free reflow soldering processes?
Yes, the 1.5SMC11CH is qualified for lead-free reflow per J-STD-020 Level 1 (MSL-1), with a peak reflow temperature tolerance of 260°C. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the UL 94V-0 molding compound withstands standard Pb-free thermal profiles without delamination or parameter shift.
How does the clamping voltage of 1.5SMC11CH compare to its working voltage?
The 1.5SMC11CH has a working stand-off voltage (VWM) of 9.4V and a maximum clamping voltage (VC) of 16.2V at 97A. This 7.2V headroom ensures reliable operation below VBR during normal conditions while limiting transient overvoltage to a safe margin above the protected IC's absolute maximum rating - critical for 12V automotive systems.
Can 1.5SMC11CH be used in place of a unidirectional 1.5SMC11H?
No - the 1.5SMC11CH is bidirectional and lacks a cathode band; substituting it for a unidirectional 1.5SMC11H may compromise protection in circuits relying on polarity-specific conduction paths (e.g., DC bias rails with single-polarity surge risk). Use only where bidirectional symmetry is required or verified in the target application.
What thermal derating applies to 1.5SMC11CH above 25°C ambient?
Per Figure 2 in the datasheet, the 1.5SMC11CH's peak pulse power (PPK) must be linearly derated above 25°C ambient: at 85°C, PPK reduces to ~1050W; at 125°C, it drops to ~600W. Designers must ensure PCB copper area and airflow maintain TJ ≤150°C under worst-case surge repetition and ambient conditions.
1.5SMC11CH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC11CH FAQ
1.How can I place an order for 1.5SMC11CH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CH 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 1.5SMC11CH reliable?
The price and inventory of 1.5SMC11CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11CH is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CH?
1.5SMC11CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CH 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 1.5SMC11CH?
For technical support, including 1.5SMC11CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CH requirements.
6.How does Aetrix verify that 1.5SMC11CH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CH 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 1.5SMC11CH meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CH?
All 1.5SMC11CH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CH, 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 1.5SMC11CH part is unused and in its original packaging.
Return procedure for 1.5SMC11CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11CH Tags
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