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Taiwan Semiconductor Corporation 1.5SMC11AH
- Part No.:
- 1.5SMC11AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11AH.pdf
- Description:
- 1500W, 11V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,725
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Product details
Overview
1.5SMC11AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 10.5–11.6V breakdown voltage (VBR), and 15.6V maximum clamping voltage (VC) at 100A peak impulse current. It provides ESD and surge protection for DC power rails and signal lines in automotive and industrial control systems.
For engineers reviewing the 1.5SMC11AH datasheet, 1.5SMC11AH pinout, 1.5SMC11AH application, or 1.5SMC11AH equivalent, key selection criteria include working stand-off voltage (9.40V), low leakage (<1µA at VWM), AEC-Q101 qualification, ISO 7637-2 compliance, and fast sub-1ps response time-critical for protecting CAN, LIN, and sensor interfaces against load dump and ESD events.
Technical Context
The 1.5SMC11AH operates as a unidirectional avalanche diode, clamping transients above its breakdown threshold while maintaining <1µA blocking leakage below 9.40V. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low temperature coefficient (0.075%/°C).
Designed for automated SMT placement, it meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity. Thermal performance includes RθJA = 50°C/W and RθJC = 15°C/W, enabling reliable operation up to TJ = +150°C in high-density PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 10.5–11.6V - defines precise avalanche initiation range for predictable clamping onset |
| VWM | 9.40V - maximum continuous reverse operating voltage before leakage exceeds 1µA |
| VC @ IPPM = 100A | 15.6V - clamped voltage during 10/1000µs surge, limiting downstream IC stress |
| PPK | 1500W - peak pulse power handling per single 10/1000µs transient per Fig.5 |
| IR @ VWM | <1µA - ultra-low leakage preserves battery life in always-on automotive modules |
| TJ max | +150°C - supports under-hood deployment without derating in engine control units |
| Response time | <1.0ps - enables effective suppression of ESD (IEC 61000-4-2) and fast-rising transients |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking; 2-terminal unidirectional configuration. Matte tin-plated leads meet J-STD-002 solderability requirements. Weight: 0.210g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected line (e.g., 12V rail); conducts during forward surge only |
| Cathode | Clamp/Return side | Connected to ground or low-impedance return path; sinks surge current during reverse avalanche |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.) |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line spikes) |
| Glass passivated junction | Ensures long-term VBR stability and reduced parameter drift over temperature and lifetime |
| Moisture sensitivity Level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly processes |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V supply lines in body control modules (BCM) and lighting ECUs from load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and LDO/regulator input to clamp transients before they reach sensitive PMICs. Use Value: Limits clamped voltage to 15.6V at 100A, preventing overvoltage damage to downstream 16V-rated regulators and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb ESD (±8kV contact) and inductive switching noise on 4–20mA or 0–10V signal lines. Use Value: Sub-1ps response and <1µA leakage preserve signal integrity and minimize offset error in precision measurement circuits. |
| Telecom DC Power Input Protection | Consumer USB-C Port Surge Suppression |
Use Scenario: Securing 48V DC input of PoE-powered network switches and base station radios against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on main DC bus, coordinated with upstream fuses and secondary filtering. Use Value: 1500W peak power rating handles multi-kA induced surges per IEC 61000-4-5 (10/700µs), reducing need for cascaded protection stages. | Use Scenario: Adding robustness to USB-C port VBUS lines in portable monitors and docking stations exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed directly at connector to shunt ESD before reaching USB PD controller and power switches. Use Value: 9.40V VWM allows safe operation across full USB-C VBUS range (5–20V), while 15.6V VC protects 20V-tolerant silicon. |
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 PPK, DO-214AA (SMB) package, VC = 18.2V @ 33.5A | Lower power rating; suitable for lower-energy transients (e.g., IEC 61000-4-2 only) | Select when board space is constrained and surge energy is limited to ≤600W |
| 1.5KE11A | Through-hole DO-201 package, same VBR/VC, but slower thermal response and no AEC-Q101 | Not automotive-qualified; used in cost-sensitive industrial power supplies | Choose for legacy through-hole designs where rework to SMT is not feasible |
Compared with SMBJ11A and 1.5KE11A, the 1.5SMC11AH delivers 2.5× higher peak power in an AEC-Q101-qualified SMT package with tighter VBR tolerance and lower clamping voltage-making it optimal for next-generation automotive and high-reliability industrial designs requiring compact, high-energy surge immunity.
Availability
1.5SMC11AH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1.5SMC11AH 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 for automotive, industrial, and consumer markets.
The 1.5SMCxxAH series was developed to deliver AEC-Q101-compliant, high-power surface-mount TVS protection for 12V/24V automotive subsystems and ruggedized industrial equipment-emphasizing reliability, low leakage, and ISO 7637-2 compliance.
FAQ
What is the maximum clamping voltage of the 1.5SMC11AH under a 100A transient?
The 1.5SMC11AH has a maximum clamping voltage (VC) of 15.6V when subjected to a 100A peak impulse current with a 10/1000µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see minimal overvoltage stress during standardized surge events.
Is the 1.5SMC11AH suitable for bidirectional transient protection?
No-the 1.5SMC11AH is a unidirectional TVS diode. For bidirectional applications, Taiwan Semiconductor specifies the 1.5SMC11CAH variant (with CAH suffix), which provides symmetrical clamping in both polarities and is intended for AC-coupled or floating signal lines.
Does the 1.5SMC11AH meet automotive qualification standards?
Yes-the 1.5SMC11AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements. Its DO-214AB package, glass-passivated junction, and +150°C junction rating make it suitable for under-hood and chassis-mounted automotive electronics.
What is the working stand-off voltage (VWM) of the 1.5SMC11AH?
The working stand-off voltage of the 1.5SMC11AH is 9.40V. This is the maximum DC or continuous peak reverse voltage that can be applied without exceeding 1µA leakage current, ensuring compatibility with 9–10V nominal systems such as automotive LIN buses and low-voltage sensor supplies.
How does the 1.5SMC11AH compare to the 1.5SMC11H variant?
The 1.5SMC11AH offers tighter breakdown voltage tolerance (10.5–11.6V vs. 9.9–12.1V for 1.5SMC11H) and lower clamping voltage (15.6V vs. 16.2V at 100A). Both share identical package, power rating, and AEC-Q101 qualification-but the 'A' suffix denotes enhanced VBR consistency for critical timing and regulation applications.
1.5SMC11AH 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):
- 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)
1.5SMC11AH FAQ
1.How can I place an order for 1.5SMC11AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11AH 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 1.5SMC11AH reliable?
The price and inventory of 1.5SMC11AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11AH is usually 5 days.
3.What payment methods are accepted for 1.5SMC11AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11AH?
1.5SMC11AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11AH 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 1.5SMC11AH?
For technical support, including 1.5SMC11AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11AH requirements.
6.How does Aetrix verify that 1.5SMC11AH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11AH 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 1.5SMC11AH meets industry standards.
7.What is the process for return or replacement of 1.5SMC11AH?
All 1.5SMC11AH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11AH, 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 1.5SMC11AH part is unused and in its original packaging.
Return procedure for 1.5SMC11AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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