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Taiwan Semiconductor Corporation SMCJ16CA
- Part No.:
- SMCJ16CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16CA.pdf
- Description:
- TVS DIODE 16VWM 26VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,481
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Product details
Overview
SMCJ16CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 16V working stand-off voltage (VWM), 17.8–19.7V breakdown voltage (VBR), and 26.0V maximum clamping voltage (VC) at 60A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ16CA datasheet, SMCJ16CA pinout, SMCJ16CA application, or SMCJ16CA equivalent, this page delivers verified electrical parameters, clamping performance under 10/1000μs surge, thermal resistance (RθJC = 10°C/W), moisture sensitivity level (MSL 1), and bidirectional ESD/inductive switching protection use cases.
Technical Context
The SMCJ16CA implements a glass-passivated silicon junction optimized for fast response (<1.0ps rise from 0V to VBR min) and low leakage (<1μA at 16V). Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating signal lines without polarity concerns.
Designed per ANSI/IEEE C62.35, it sustains 1500W peak pulse power (tp = 1ms) with derating above 25°C (RθJA = 55°C/W), and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for surface-mount reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 17.8 / 19.7 V @ IT = 1 mA - Confirmed breakdown threshold range for design margining |
| VC @ IPPM | 26.0 V @ 60 A - Clamped voltage during 10/1000μs surge, limiting downstream stress |
| PPK | 1500 W - Peak pulse power handling capability per single 1ms transient |
| IR @ VWM | <1 μA - Negligible leakage current at rated stand-off, preserving system quiescent power |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood or industrial enclosures |
| RθJC | 10 °C/W - Low junction-to-case thermal resistance supporting high-power transient dissipation |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded epoxy case with matte tin-plated leads, polarity indicated by cathode band (bidirectional function renders band non-functional but retained for marking consistency).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Transient current entry point in negative polarity events | Accepts reverse surge current during negative-going transients; symmetric with cathode |
| Cathode (band end) | Transient current entry point in positive polarity events | Accepts forward surge current during positive-going transients; symmetric with anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated immunity to automotive load-dump and inductive-switching transients |
| MSL Level 1 per J-STD-020 | Zero floor-life limitation - supports standard SMT reflow without dry-pack or baking |
| Halogen-free per IEC 61249-2-21 | Meets environmental compliance for RoHS-compliant industrial and automotive PCBs |
| Fast response time <1.0 ps | Clamps before sensitive ICs experience overvoltage stress during ESD or EFT events |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input to clamp ±100V transients within 26V. Use Value: Prevents MCU reset or LDO failure during ISO 7637-2 Pulse 5a (load dump) events. | Use Scenario: 24V DC digital input modules receiving signals from field sensors. IC Role / Device Role / Timing Role: Transient suppression on isolated input channels prior to optocoupler or Schmitt trigger. Use Value: Eliminates false triggering caused by inductive kickback from solenoid or relay coils. |
| LED Driver Surge Suppression | RS-485 Bus Line Protection |
Use Scenario: Constant-current LED drivers in streetlight systems subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to absorb 1500W line-to-ground transients. Use Value: Maintains LED string integrity during 10/1000μs surges up to 60A without degradation. | Use Scenario: Industrial RS-485 nodes in factory-floor networks with long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping on A/B differential pair to limit common-mode transients to <26V. Use Value: Preserves transceiver functionality during EFT bursts (IEC 61000-4-4) without latch-up. |
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) | 600W PPK rating, same VWM/VBR/VC, DO-214AA (SMB) package | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a | Select when board space constraints require smaller SMB footprint and surge energy ≤600W |
| 1.5KE16CA (ON Semiconductor) | 1500W PPK, axial-leaded DO-201AD package, higher RθJA (75°C/W) | Not suitable for automated SMT assembly; requires through-hole rework | Choose only for legacy through-hole designs where reflow compatibility is not required |
Compared with SMBJ16CA and 1.5KE16CA, the SMCJ16CA uniquely combines 1500W surge capacity, DO-214AB SMT compatibility, MSL Level 1 handling, and ISO 7637-2 validation-making it optimal for automotive-grade surface-mount power rail protection where both energy rating and manufacturability are critical.
Availability
SMCJ16CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O conditioning, LED driver surge suppression, and RS-485 bus line protection requiring stable component supply across production lifecycles.
Supply support for SMCJ16CA 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, serving global automotive, industrial, and consumer markets since 1979.
The SMCJ series was developed specifically for high-energy transient suppression in automotive power distribution networks and industrial control systems, emphasizing robustness, AEC-Q101 alignment, and SMT process compatibility.
FAQ
What is the clamping voltage of SMCJ16CA at its rated peak pulse current?
The SMCJ16CA has a maximum clamping voltage (VC) of 26.0 V at 60 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 26.0 V during worst-case surge events. The SMCJ16CA maintains this clamping performance across its full operating temperature range (−55°C to +150°C).
Is SMCJ16CA unidirectional or bidirectional, and how does that affect circuit placement?
The SMCJ16CA is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without polarity sensitivity. Its DO-214AB package retains a cathode band solely for marking consistency-not functional polarity-so it may be placed in either orientation across AC lines, differential buses, or floating power domains. This eliminates orientation errors during automated placement and simplifies layout for RS-485 or CAN bus protection.
Does SMCJ16CA meet automotive transient immunity standards?
Yes, the SMCJ16CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a (capacitive coupled noise), and Pulse 3b (inductive coupled noise). These validations confirm its suitability for 12V and 24V automotive power networks, including engine control units and body electronics where load-dump and switching transients are prevalent.
What is the thermal resistance profile of SMCJ16CA, and why does it matter for sustained surge duty?
The SMCJ16CA has a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient (RθJA) of 55°C/W. These values directly impact its ability to dissipate heat during repetitive surges: low RθJC enables efficient heat transfer to the PCB copper pour, while RθJA determines ambient derating per Figure 2 in the datasheet. For designs expecting multiple transients, thermal layout (e.g., ≥1 sq-in. 2-oz copper pad) is essential to maintain TJ ≤150°C.
Can SMCJ16CA replace SMCJ16A in an existing design?
No-SMCJ16CA and SMCJ16A are not interchangeable. SMCJ16CA is bidirectional (CA suffix), while SMCJ16A is unidirectional (A suffix). Substituting SMCJ16CA for SMCJ16A introduces unintended conduction paths in DC-biased circuits and alters clamping symmetry. Always verify polarity requirements: use SMCJ16CA only where bidirectional protection is explicitly needed, such as AC lines or differential data buses.
SMCJ16CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 57.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ16CA FAQ
1.How can I place an order for SMCJ16CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16CA 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 SMCJ16CA reliable?
The price and inventory of SMCJ16CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16CA is usually 5 days.
3.What payment methods are accepted for SMCJ16CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16CA?
SMCJ16CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16CA 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 SMCJ16CA?
For technical support, including SMCJ16CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16CA requirements.
6.How does Aetrix verify that SMCJ16CA is sourced from the original manufacturer or authorized distributors?
All SMCJ16CA 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 SMCJ16CA meets industry standards.
7.What is the process for return or replacement of SMCJ16CA?
All SMCJ16CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16CA, 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 SMCJ16CA part is unused and in its original packaging.
Return procedure for SMCJ16CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ16CA Tags
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