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Taiwan Semiconductor Corporation 1.5SMC16H
- Part No.:
- 1.5SMC16H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC16H.pdf
- Description:
- 1500W, 16V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,406
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Product details
Overview
1.5SMC16H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500W peak pulse power, 14.4–17.6V breakdown voltage (VBR), and 23.5V maximum clamping voltage (VC) at 67A peak impulse current. It protects automotive and industrial power rails against ESD, load dump, and lightning-induced transients.
For engineers reviewing the 1.5SMC16H datasheet, 1.5SMC16H pinout, 1.5SMC16H application, or 1.5SMC16H equivalent, this device delivers AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, and <1μA leakage above 12.9V working stand-off voltage - critical for robust front-end protection in 12V/24V systems.
Technical Context
The 1.5SMC16H employs a glass-passivated silicon junction optimized for fast transient suppression with low clamping ratio (VC/VBR ≈ 1.44 at nominal VBR). Its thermal design supports 150°C max junction temperature and 50°C/W junction-to-ambient resistance, enabling reliable operation under sustained surge stress in enclosed automotive ECUs.
It operates as a unidirectional clamp referenced to cathode polarity, with 12.9V working stand-off voltage ensuring compatibility with 12V nominal supply rails while maintaining margin against ripple and tolerance. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.4V / 17.6V - defines minimum voltage at which TVS begins avalanche conduction; ensures reliable triggering above 12V rail noise floor |
| VWM | 12.9V - maximum continuous reverse operating voltage; sets safe operating margin below VBR for 12V system use |
| VC @ IPPM | 23.5V at 67A - clamped voltage during 10/1000μs surge; limits downstream IC stress to ≤23.5V during worst-case transients |
| PPK | 1500W - peak pulse power rating per 1ms waveform; supports high-energy ISO 7637-2 Pulse 5a (load dump) events |
| IR @ VWM | <1μA - ultra-low leakage at stand-off voltage; avoids parasitic loading on sensitive sensor or communication lines |
| TJ max | +150°C - maximum junction temperature; enables deployment in under-hood automotive environments without derating |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210g mass and UL 94V-0 molding; compatible with standard SMT reflow profiles |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band marking for unidirectional polarity, and 0.210g typical weight. Compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input reference node for clamping | Connected to protected line (e.g., 12V rail); conducts surge current to cathode when voltage exceeds VBR |
| Cathode | Clamp return path | Connected to ground or lower-potential rail; provides low-impedance path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without degradation |
| Fast response time <1ps | Enables clamping before transient energy couples into downstream circuitry - critical for protecting high-speed CAN or LIN transceivers |
| Glass passivated junction | Provides stable VBR over lifetime and improved resistance to humidity-induced parameter drift vs. epoxy-passivated alternatives |
| RoHS & halogen-free | Meets IEC 61249-2-21 halogen-free definition and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12V power input of BCM against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC converter input. Use Value: Limits clamped voltage to 23.5V, preventing overvoltage damage to 36V-rated input stages of buck converters and microcontrollers. | Use Scenario: Shields 24V digital input channel from ESD and inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Front-end transient suppressor on field-side signal conditioning path prior to optocoupler isolation. Use Value: Sub-1ps response ensures clamping occurs before ESD pulse propagates across isolation barrier, preserving signal integrity and opto lifetime. |
| Telecom Power Supply Interface | Automotive Infotainment USB Port |
Use Scenario: Guards AC/DC adapter output against lightning-induced surges entering via telecom line interface. IC Role / Device Role / Timing Role: Secondary-side TVS on +12V output rail feeding PoE midspan or baseband processor. Use Value: 1500W peak power rating absorbs multi-kV surge energy without failure, meeting IEC 61000-4-5 Level 4 immunity requirements. | Use Scenario: Suppresses ESD events (>8kV contact discharge) on USB VBUS line connected to vehicle battery. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and chassis ground, positioned upstream of USB power switch. Use Value: 12.9V VWM allows normal 5V USB operation while clamping ESD to 23.5V - well below 30V absolute max rating of most USB power switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | 600W PPK, DO-214AA (SMB) package, 16.7V VC @ 38.9A | Limited to lower-energy transients; not rated for ISO 7637-2 Pulse 5a | Select when space-constrained layouts require smaller SMB footprint and surge energy is limited to IEC 61000-4-2/4-4 levels. |
| 1.5KE16A | Through-hole DO-15 package, same 1500W rating but higher RθJA (75°C/W), no AEC-Q101 qualification | Not suitable for automotive SMT production or high-reliability under-hood use | Choose only for prototyping or non-automotive industrial applications where board-level rework is acceptable. |
Compared with SMBJ16A and 1.5KE16A, the 1.5SMC16H uniquely combines AEC-Q101 qualification, 1500W capability in surface-mount form, and ISO 7637-2 compliance - making it the only option qualified for production automotive electronics requiring both high surge immunity and automated assembly.
Availability
1.5SMC16H is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, telecom power interfaces, and infotainment system ESD hardening requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC16H 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 validation capabilities.
The 1.5SMCxxH series was designed specifically for high-reliability automotive and industrial transient suppression, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust SMT manufacturability in the DO-214AB package.
FAQ
What is the polarity configuration of the 1.5SMC16H?
The 1.5SMC16H is a unidirectional TVS diode with cathode-band marking indicating the cathode terminal. It functions as a reverse-biased clamp: when voltage at the anode exceeds the breakdown threshold relative to cathode, it avalanches to shunt surge current to ground. This configuration is intended for DC rail protection where polarity is fixed, unlike bidirectional variants (e.g., 1.5SMC16AH) used in AC or data-line applications.
Does the 1.5SMC16H meet automotive qualification standards?
Yes, the 1.5SMC16H is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. Its construction - including glass-passivated junction, JESD201 Class 2 whisker resistance, and J-STD-020 Level 1 moisture sensitivity - satisfies full automotive production release criteria for under-hood and cabin ECU applications.
What is the maximum clamping voltage of the 1.5SMC16H and at what current is it specified?
The maximum clamping voltage (VC) of the 1.5SMC16H is 23.5V, measured at the peak impulse current (IPPM) of 67A under the standardized 10/1000μs double-exponential surge waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events and is guaranteed across temperature and production lot variations per the datasheet specification.
Can the 1.5SMC16H be used in bidirectional signal line protection?
No, the 1.5SMC16H is strictly unidirectional and must not be used on AC-coupled or bidirectional data lines such as CAN, LIN, or USB D+/D−. For those applications, the bidirectional variant 1.5SMC16AH is required - it exhibits symmetrical clamping in both directions and uses different test conditions (e.g., doubled IR limit for VWM ≤10V). Using 1.5SMC16H in place of 1.5SMC16AH risks forward conduction and failure during negative transients.
What is the thermal resistance profile of the 1.5SMC16H and how does it impact layout design?
The 1.5SMC16H has a junction-to-ambient thermal resistance (RθJA) of 50°C/W and junction-to-case (RθJC) of 15°C/W. To maintain TJ ≤150°C under 1500W surge, PCB copper area must provide sufficient heat spreading - typically ≥100 mm² of 2-oz copper connected to both terminals. Layouts should avoid narrow traces or thermal isolation that would degrade RθJA beyond the rated value, especially in sealed enclosures.
1.5SMC16H 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):
- 12.9V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.5V
- Current - Peak Pulse (10/1000µs):
- 67A
- 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)
1.5SMC16H FAQ
1.How can I place an order for 1.5SMC16H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC16H 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 1.5SMC16H reliable?
The price and inventory of 1.5SMC16H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC16H is usually 5 days.
3.What payment methods are accepted for 1.5SMC16H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC16H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC16H?
1.5SMC16H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC16H 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 1.5SMC16H?
For technical support, including 1.5SMC16H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC16H requirements.
6.How does Aetrix verify that 1.5SMC16H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC16H 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 1.5SMC16H meets industry standards.
7.What is the process for return or replacement of 1.5SMC16H?
All 1.5SMC16H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC16H, 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 1.5SMC16H part is unused and in its original packaging.
Return procedure for 1.5SMC16H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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