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Taiwan Semiconductor Corporation 1.5SMC15CH
- Part No.:
- 1.5SMC15CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CH.pdf
- Description:
- 1500W, 15V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,590
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Product details
Overview
1.5SMC15CH from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 13.5–16.5V at 1mA test current, working stand-off voltage 12.1V, maximum clamping voltage 22.0V at 71A peak pulse current, and AEC-Q101 qualification for automotive-grade surge protection in power supply rails.
For engineers reviewing the 1.5SMC15CH datasheet, 1.5SMC15CH pinout, 1.5SMC15CH application, or 1.5SMC15CH equivalent, this device serves as a primary overvoltage clamp for DC input stages, battery protection circuits, and ESD-sensitive interfaces where fast sub-nanosecond response (<1.0ps), low leakage (<1μA at 12.1V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its breakdown threshold (VBR = 13.5–16.5V), it avalanches to divert surge current away from downstream circuitry while limiting clamped voltage to ≤22.0V at 71A. Its glass-passivated junction ensures stable VBR tolerance and low temperature coefficient (0.084%/°C).
Designed for surface-mount automated assembly, the 1.5SMC15CH features matte tin-plated leads compliant with J-STD-002 solderability, meets JESD201 Class 2 whisker resistance, and achieves UL 94V-0 flammability rating in its DO-214AB molding compound - enabling robust deployment in automotive infotainment power inputs and industrial I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 13.5–16.5V - defines precise avalanche initiation range for reliable overvoltage triggering |
| VWM | 12.1V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM = 71A | 22.0V - clamped voltage during 10/1000μs surge, determining protected circuit's voltage stress limit |
| PPK | 1500W - peak pulse power handling per single 1ms transient, derated above 25°C ambient |
| IR @ VWM | <1μA - ultra-low blocking leakage preserves battery life and signal integrity in always-on systems |
| TJ max | 150°C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Response time | <1.0ps - sub-picosecond switching ensures protection before sensitive ICs experience damage |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0; terminals are matte tin-plated for reliable reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; completes clamping loop during transients |
| Cathode | Protected line input | Connected to DC rail or signal line being protected; avalanche conduction occurs from cathode to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports use in ADAS power supplies and body control modules |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without degradation |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement before SMT assembly - simplifies manufacturing logistics |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives - supports green product certification and export compliance |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary shunt clamp on main DC input rail, triggered within <1ps to limit voltage to ≤22V. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers during ISO 7637-2 Pulse 5a events up to 35V/100ms. |
Use Scenario: 24V digital input channels in programmable logic controllers subject to field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Front-end transient suppressor placed before optocoupler input stage. Use Value: Clamps 1kV/500A surges to <22V, preserving optocoupler CTR and enabling >100k-cycle reliability in factory automation. |
| Telecom DC Power Feeds | Consumer USB-C Power Delivery Ports |
Use Scenario: -48V telecom rectifier outputs feeding baseband processors. IC Role / Device Role / Timing Role: Reverse-polarity and surge protection element on secondary-side distribution bus. Use Value: Blocks >1000V transients induced by lightning-induced ground potential rise while maintaining <1μA leakage at -48V nominal. |
Use Scenario: VBUS line in USB-C receptacles subjected to hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: First-line bidirectional-capable clamp (via CH suffix variant) before USB PD controller. Use Value: Limits 8kV contact ESD to <22V peak, preventing latch-up in TUSB320 or FUSB302 devices during plug insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Bidirectional, 600W PPK, VC = 24.4V @ 24.9A, DO-214AA (SMB) package | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump | Select only for cost-sensitive consumer applications with <600W surge exposure and no automotive qualification requirement |
| 1.5KE15CA | Through-hole, 1500W, bidirectional, VC = 23.2V @ 64.7A, DO-201AD package | Not surface-mountable; incompatible with automated SMT lines; higher thermal resistance (RθJA = 10°C/W) | Use only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency needs |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CH delivers higher surge robustness in a compact SMT footprint with automotive-grade reliability - making it optimal for volume-manufactured automotive and industrial power interfaces where board space, AEC-Q101 compliance, and 1500W clamping are mandatory.
Availability
1.5SMC15CH is available at Aetrix Electronics and suitable for automotive power management, industrial PLC I/O protection, and telecom DC feed applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC15CH 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, MOSFETs, and power management components since 1979.
The 1.5SMC series was developed specifically for high-reliability surface-mount surge protection in automotive and industrial environments - emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust glass-passivated junction technology.
FAQ
What is the polarity configuration of the 1.5SMC15CH?
The 1.5SMC15CH is a unidirectional TVS diode, configured with cathode-marked polarity. It conducts only during reverse-biased overvoltage events - i.e., when the cathode voltage exceeds the anode by ≥13.5V - and blocks normally in forward bias. This makes it ideal for protecting positive DC rails where ground-referenced clamping is required, unlike bidirectional variants (e.g., 1.5SMC15CAH) used for AC or differential signal lines.
Does the 1.5SMC15CH meet automotive qualification standards?
Yes, the 1.5SMC15CH is AEC-Q101 qualified and certified for use in automotive electronic systems. It passes stress tests including high-temperature reverse bias, temperature cycling, and humidity bias life - and is explicitly validated for ISO 7637-2 Pulse 1 (load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling). These qualifications are documented in Taiwan Semiconductor's official AEC-Q101 report for the 1.5SMCxH family.
What is the maximum clamping voltage of the 1.5SMC15CH under surge conditions?
The 1.5SMC15CH has a maximum clamping voltage (VC) of 22.0V at a peak pulse current (IPPM) of 71A, tested with the standard 10/1000μs waveform per Fig.5 in the datasheet. This value represents the upper bound of voltage seen by protected circuitry during worst-case transients - critical for ensuring downstream ICs (e.g., MCUs, PMICs) remain within their absolute maximum ratings.
How does the 1.5SMC15CH compare to the 1.5SMC15AH variant?
The 1.5SMC15CH and 1.5SMC15AH share identical package (DO-214AB), power rating (1500W), and thermal specs, but differ in breakdown voltage tightness: 1.5SMC15CH has VBR = 13.5–16.5V (±10%), while 1.5SMC15AH specifies 14.3–15.8V (±5%). The 'A' grade offers tighter VBR tolerance for applications demanding precise clamping thresholds - such as regulated 12V systems where margin between VWM and nominal rail must be minimized.
Is the 1.5SMC15CH compatible with lead-free reflow soldering processes?
Yes, the 1.5SMC15CH uses matte tin-plated leads qualified per J-STD-002 for solderability and is rated for moisture sensitivity level 1 (MSL-1) per J-STD-020 - meaning it can be stored indefinitely at ambient conditions and withstand standard lead-free reflow profiles (peak 260°C, 60–90 seconds above 217°C) without popcorn cracking or delamination. Its DO-214AB package is fully compatible with Type II and III stencil designs.
1.5SMC15CH 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 71A
- 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)
1.5SMC15CH FAQ
1.How can I place an order for 1.5SMC15CH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CH 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 1.5SMC15CH reliable?
The price and inventory of 1.5SMC15CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15CH is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CH?
1.5SMC15CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CH 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 1.5SMC15CH?
For technical support, including 1.5SMC15CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CH requirements.
6.How does Aetrix verify that 1.5SMC15CH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CH 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 1.5SMC15CH meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CH?
All 1.5SMC15CH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CH, 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 1.5SMC15CH part is unused and in its original packaging.
Return procedure for 1.5SMC15CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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