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Taiwan Semiconductor Corporation 1.5SMC16CA
- Part No.:
- 1.5SMC16CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC16CA.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,314
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Product details
Overview
1.5SMC16CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in DC power rails and signal lines. It features a 16V working stand-off voltage (VWM), 17.6V maximum breakdown voltage (VBR), 22.5V clamping voltage (VC) at 70A peak pulse current, and 1500W peak pulse power dissipation in a DO-214AB (SMC) package - deployed in telecom interface protection and industrial I/O circuits.
For engineers reviewing the 1.5SMC16CA datasheet, 1.5SMC16CA pinout, 1.5SMC16CA application, or 1.5SMC16CA equivalent, key selection criteria include bidirectional clamping performance, sub-1ps response time, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<1μA @ 13.6V), and thermal reliability up to +150°C junction temperature.
Technical Context
The 1.5SMC16CA implements a glass-passivated silicon avalanche junction optimized for fast transient suppression without degradation under repetitive surges. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths, eliminating polarity dependency during layout.
With a junction-to-case thermal resistance of 15°C/W and 50°C/W junction-to-ambient rating, the device sustains 1500W peak pulse power for 1ms while maintaining TJ ≤ 150°C under defined derating conditions. Clamping occurs within <1.0ps, limiting overvoltage exposure before downstream ICs experience stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13.6 V - Maximum continuous reverse voltage before significant leakage; sets safe operating margin below system rail. |
| VBR (min/max) | 15.2 V / 16.8 V - Breakdown initiates within this range at 1mA test current; defines turn-on threshold tolerance. |
| VC @ IPPM | 22.5 V @ 70 A - Clamped voltage during 10/1000μs surge; determines maximum stress on protected circuitry. |
| PPK | 1500 W - Peak pulse power handling per IEEE C62.35; supports automotive load-dump and lightning-induced transients. |
| IR @ VWM | <1 μA - Ultra-low leakage ensures minimal power loss and signal integrity in high-impedance nodes. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood or enclosed industrial enclosures. |
| Response time | <1.0 ps - Avalanche reaction speed limits voltage overshoot during ESD events (IEC 61000-4-2). |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional, cathode band not applicable (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Transient conduction path | Both terminals function identically; conducts surge current in either direction when voltage exceeds ±VBR. |
| Case (exposed metal tab) | Thermal path only | No electrical connection; serves as heatsink interface; requires thermal pad design per JEDEC MO-214AC. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and floating grounds without polarity concerns. |
| ISO 7637-2 compliance | Validated for automotive Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) - critical for vehicle ECUs. |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow; compatible with standard SMT assembly processes without floor-life restrictions. |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU Directive 2011/65/EU; supports environmentally compliant industrial and consumer product certifications. |
| Junction-to-case RθJC = 15°C/W | Enables efficient heat transfer to PCB copper; supports sustained surge duty cycles when mounted on ≥1 sq-in thermal pad. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24V digital input channels against inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Bidirectional TVS placed between field input and optocoupler input, clamping transients before they reach isolation barrier. Use Value: Limits voltage to ≤22.5V during 1500W surges, preventing optocoupler CTR degradation and ensuring long-term channel reliability. |
Use Scenario: Safeguarding LIN bus transceivers from battery line transients during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Placed across LIN bus pins (LIN-H/LIN-L) to clamp bidirectional spikes induced by ISO 7637-2 Pulse 2a/5a. Use Value: Maintains LIN signal integrity by clamping to 22.5V within <1ps, avoiding bus lockup or false frame detection during surge events. |
| Telecom Ethernet Surge Port | Consumer USB-C ESD Protection |
Use Scenario: Front-end protection for PoE-powered Ethernet ports exposed to lightning-induced surges on data pairs. IC Role / Device Role / Timing Role: Paired 1.5SMC16CA devices on each differential pair (TX+/TX−, RX+/RX−), referenced to chassis ground. Use Value: Clamps common-mode surges to ≤22.5V while preserving 100Ω differential impedance; passes IEC 61000-4-5 Level 4 (4kV) |
Use Scenario: Secondary-level ESD protection on USB-C CC and VCONN lines where primary TVS cannot meet low-capacitance requirements. IC Role / Device Role / Timing Role: Bidirectional clamp between CC1/CC2 and ground, absorbing ±15kV contact discharge per IEC 61000-4-2. Use Value: Delivers <1μA leakage at 13.6V, preventing CC logic state corruption while suppressing ESD with <1ps response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA (Bourns) | Same DO-214AA (SMB) package; lower PPK (600W); higher VC (26.0V @ 38.9A); 10% tighter VBR tolerance. | Lower power handling limits use to sub-600W surge environments; less suitable for ISO 7637-2 Pulse 5a. | Select SMBJ16CA only if board space constraints require smaller SMB footprint and surge energy is ≤600W. |
| SMCJ16CA (Littelfuse) | Same DO-214AB (SMC) package; identical PPK (1500W); slightly higher VC (23.2V @ 64.7A); meets AEC-Q101. | AEC-Q101 qualification adds automotive qualification confidence but does not alter electrical behavior in non-automotive use. | Choose SMCJ16CA when AEC-Q101 documentation is contractually required; otherwise, 1.5SMC16CA offers equivalent protection at lower cost. |
Compared with SMBJ16CA and SMCJ16CA, the 1.5SMC16CA delivers identical 1500W surge capability and DO-214AB mechanical compatibility while offering the lowest clamping voltage (22.5V) in its class - reducing stress on protected ICs without requiring larger PCB area or automotive-grade certification overhead.
Availability
1.5SMC16CA is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, telecom Ethernet surge ports, and consumer USB-C ESD protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC16CA 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 1.5SMCxxCA series was developed to deliver high-power, bidirectional transient suppression in compact surface-mount packages for automotive, industrial, and telecom applications demanding ISO 7637-2 and IEC 61000-4-5 compliance.
FAQ
What is the clamping voltage of the 1.5SMC16CA and how is it measured?
The 1.5SMC16CA has a maximum clamping voltage (VC) of 22.5 V at 70 A peak pulse current, tested using the 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is guaranteed across temperature and production lots per Taiwan Semiconductor's characterization data.
Is the 1.5SMC16CA unidirectional or bidirectional, and how does that affect PCB layout?
The 1.5SMC16CA is a bidirectional TVS diode, meaning it clamps symmetrically in both polarities - no anode/cathode orientation is required during placement. This eliminates polarity-check steps in automated assembly and simplifies layout for AC-coupled interfaces like RS-485 or LIN bus, where traditional unidirectional devices would require two components or careful orientation.
Does the 1.5SMC16CA meet automotive transient standards such as ISO 7637-2?
Yes, the 1.5SMC16CA is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery interruption and coupling), and Pulse 3a/3b (capacitive coupling and line impedance) - confirmed in Taiwan Semiconductor's official datasheet revision S2207. This makes it suitable for non-safety-critical automotive ECUs without requiring additional external filtering.
What is the maximum steady-state power dissipation (PD) of the 1.5SMC16CA at 25°C ambient?
The 1.5SMC16CA has a steady-state power dissipation (PD) rating of 6.5 W at TA = 25°C, derived from its thermal resistance profile (RθJA = 50°C/W). This value applies only to continuous DC or low-frequency conditions - not transient surges - and must be derated linearly above 25°C per the datasheet's Fig.2 derating curve to maintain TJ ≤ 150°C.
How does the 1.5SMC16CA compare to the 1.5SMC16A in terms of electrical performance?
The 1.5SMC16CA differs from the 1.5SMC16A solely in polarity configuration: the "CA" suffix denotes bidirectional operation, while "A" indicates unidirectional. Their VWM (13.6 V), VBR (15.2–16.8 V), VC (22.5 V), and PPK (1500 W) are identical. The 1.5SMC16CA replaces two unidirectional devices in AC applications, reducing BOM count and PCB area.
1.5SMC16CA 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 70A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC16CA FAQ
1.How can I place an order for 1.5SMC16CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC16CA 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 1.5SMC16CA reliable?
The price and inventory of 1.5SMC16CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC16CA is usually 5 days.
3.What payment methods are accepted for 1.5SMC16CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC16CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC16CA?
1.5SMC16CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC16CA 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 1.5SMC16CA?
For technical support, including 1.5SMC16CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC16CA requirements.
6.How does Aetrix verify that 1.5SMC16CA is sourced from the original manufacturer or authorized distributors?
All 1.5SMC16CA 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 1.5SMC16CA meets industry standards.
7.What is the process for return or replacement of 1.5SMC16CA?
All 1.5SMC16CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC16CA, 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 1.5SMC16CA part is unused and in its original packaging.
Return procedure for 1.5SMC16CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC16CA Tags
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