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Taiwan Semiconductor Corporation SMCJ16C
- Part No.:
- SMCJ16C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16C.pdf
- Description:
- 1500W, 19.8V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
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Product details
Overview
SMCJ16C from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode with a 16V working stand-off voltage (VWM), 17.8–21.8V breakdown voltage (VBR), and 28.8V maximum clamping voltage (VC) at 54A peak pulse current. It features glass passivated junction, <1.0ps response time, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and EFT immunity. Used in DC power rail protection of automotive ECUs and industrial PLC I/O modules.
For engineers reviewing the SMCJ16C datasheet, SMCJ16C pinout, SMCJ16C application, or SMCJ16C equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD tolerance, peak pulse current capability under 10/1000μs waveform, thermal derating above 25°C ambient, and DO-214AB (SMC) footprint compatibility with IPC-7351B land patterns.
Technical Context
The SMCJ16C operates as a unidirectional avalanche diode, conducting only during reverse overvoltage events while remaining high-impedance under normal bias. Its glass-passivated junction ensures stable VBR and low leakage (<1μA at 16V), critical for low-power sensor interfaces.
Designed for 10/1000μs surge waveforms per IEC 61000-4-5 and ISO 7637-2, it delivers 1500W peak pulse power at TA = 25°C with junction-to-case thermal resistance of 10°C/W - enabling reliable operation in convection-cooled automotive control units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's nominal rail. |
| VBR min/max | 17.8 V / 21.8 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 28.8 V at 54 A - Clamping voltage defines worst-case stress on downstream ICs during ISO 7637-2 Pulse 5a (load dump). |
| PPK | 1500 W - Peak pulse power rating for 1 ms non-repetitive surge; validates robustness against automotive transients. |
| IR @ VWM | <1 μA - Ultra-low reverse leakage preserves battery life in always-on automotive modules. |
| TJ max | +150 °C - Enables deployment in engine bay or under-hood environments with high ambient temperature exposure. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-diode configuration with cathode band marking. Case meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; forms current loop during clamping. |
| Cathode | Protected line input | Connected to the 16V rail being safeguarded; conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | VC = 28.8 V at 54 A ensures ≤1.8× VWM margin - sufficient to protect 16V-rated CAN transceivers and microcontrollers. |
| Response speed | <1.0 ps rise time enables suppression before ESD or fast transients propagate into sensitive analog front-ends. |
| Automated placement support | DO-214AB (SMC) package with standardized tape-and-reel (3000/reel) enables high-yield SMT assembly without manual handling. |
| Environmental compliance | RoHS-compliant and halogen-free per IEC 61249-2-21 - meets automotive OEM material declaration requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-supplied ECU power input subjected to ISO 7637-2 Pulse 5a (load dump) up to 60V/100ms. IC Role / Device Role / Timing Role: Unidirectional TVS clamp limiting transient voltage to ≤28.8V during surge events. Use Value: Prevents latch-up or gate oxide damage in 3.3V/5V logic powered from buck-converted 12V rails. |
Use Scenario: 4–20mA current-loop transmitter connected to field wiring exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage protection at analog front-end input stage before signal conditioning amplifier. Use Value: Maintains sub-1μA leakage to avoid offset error in precision current-sense circuits. |
| LED Driver Output Protection | ESD-Sensitive Communication Port |
Use Scenario: Constant-current LED driver output driving long cables in commercial lighting systems. IC Role / Device Role / Timing Role: Transient suppression on output node to prevent MOSFET drain-source breakdown during cable disconnect arcs. Use Value: 1500W PPK rating withstands repetitive inductive kickback without degradation over 10,000 cycles. |
Use Scenario: RS-485 transceiver bus lines routed across PCB edges and connectors in factory automation panels. IC Role / Device Role / Timing Role: Board-level ESD protection per IEC 61000-4-2 Level 4 (8kV contact / 15kV air). Use Value: Sub-1.0ps response ensures clamping initiates before transceiver input structures experience destructive voltage overshoot. |
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 | Bidirectional variant; same VWM/VBR/VC but symmetric clamping in both polarities. | Required where AC-coupled signals or bidirectional data lines (e.g., USB D+/D−) need protection. | Select SMCJ16C for DC power rails; SMBJ16CA only if polarity-agnostic clamping is mandated by signal topology. |
| SMCJ16A | Tighter VBR tolerance (17.8–19.7V vs. 17.8–21.8V); lower VC = 26.0V at 60A. | Better voltage margin for ICs with narrow absolute maximum ratings (e.g., 3.3V LDO inputs). | Choose SMCJ16A when clamping voltage headroom is constrained; SMCJ16C remains optimal for cost-sensitive, general-purpose 12V/24V rail protection. |
Compared with SMBJ16CA and SMCJ16A, the SMCJ16C offers the broadest VBR range and highest surge current rating among 16V unidirectional SMC-packaged TVS diodes - making it the default choice for automotive power supply hardening where cost and proven reliability outweigh tight VBR tolerance needs.
Availability
SMCJ16C is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controller I/O modules, and LED lighting driver designs requiring stable component supply and full ISO 7637-2 compliance.
Supply support for SMCJ16C 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SMCJ series was developed specifically for high-energy transient suppression in harsh automotive environments - emphasizing robust clamping, low leakage, and AEC-Q101 qualified reliability under extended temperature and humidity stress.
FAQ
What is the clamping voltage of the SMCJ16C and how is it measured?
The SMCJ16C has a maximum clamping voltage (VC) of 28.8 V at 54 A peak pulse current, tested using the 10/1000 μs double-exponential surge waveform per IEC 61000-4-5. This value represents the worst-case voltage seen by downstream components during a transient event and is guaranteed across the full operating temperature range of −55°C to +150°C. The SMCJ16C datasheet specifies this parameter under standardized test conditions to ensure repeatable validation in system-level EMC testing.
Is the SMCJ16C unidirectional or bidirectional, and how does that affect its use?
The SMCJ16C is a unidirectional TVS diode, meaning it clamps only during reverse-biased overvoltage events - ideal for protecting DC power rails like 12V or 24V supplies. Its anode connects to ground and cathode to the protected line. Unlike bidirectional variants (e.g., SMCJ16CA), it does not conduct during positive transients on grounded lines, eliminating unnecessary power dissipation in steady-state operation. This makes the SMCJ16C preferred for power rail protection where polarity is fixed and leakage must be minimized.
Does the SMCJ16C meet automotive transient standards such as ISO 7637-2?
Yes, the SMCJ16C is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test profiles - covering common automotive electrical disturbances including supply disconnection, inductive load switching, and capacitive coupling noise. Its 1500W peak power rating and fast <1.0ps response time enable effective suppression of these transients without degradation. While not AEC-Q101 certified out-of-box, the SMCJ16C is widely used in automotive-grade designs when paired with appropriate board-level layout and thermal management.
What is the thermal resistance and maximum junction temperature of the SMCJ16C?
The SMCJ16C has a junction-to-case thermal resistance (RθJC) of 10°C/W and a maximum junction temperature (TJMAX) of +150°C. Its junction-to-ambient resistance (RθJA) is 55°C/W under standard JEDEC test conditions. These values allow the device to sustain 1500W surge pulses in short duration while maintaining safe silicon temperatures - provided PCB copper area and airflow meet minimum recommendations in the TSC application notes. Derating curves in the datasheet guide sustained power limits above 25°C ambient.
How does the SMCJ16C compare to the SMCJ16A in terms of breakdown voltage and clamping performance?
The SMCJ16C has a VBR range of 17.8–21.8 V and clamps at 28.8 V (54 A), whereas the SMCJ16A offers tighter VBR (17.8–19.7 V) and lower VC = 26.0 V (60 A). The SMCJ16A's narrower VBR improves predictability in precision protection schemes, and its lower clamping voltage provides extra margin for ICs with strict absolute maximum ratings. However, the SMCJ16C delivers higher peak current handling and broader process tolerance - making it more suitable for cost-driven, high-volume automotive and industrial applications where statistical VBR variation is acceptable.
SMCJ16C 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:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 54A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ16C FAQ
1.How can I place an order for SMCJ16C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16C 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 SMCJ16C reliable?
The price and inventory of SMCJ16C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16C is usually 5 days.
3.What payment methods are accepted for SMCJ16C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16C?
SMCJ16C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16C 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 SMCJ16C?
For technical support, including SMCJ16C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16C requirements.
6.How does Aetrix verify that SMCJ16C is sourced from the original manufacturer or authorized distributors?
All SMCJ16C 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 SMCJ16C meets industry standards.
7.What is the process for return or replacement of SMCJ16C?
All SMCJ16C units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16C, 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 SMCJ16C part is unused and in its original packaging.
Return procedure for SMCJ16C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ16C Tags
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