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Taiwan Semiconductor Corporation SMCJ16
- Part No.:
- SMCJ16
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16.pdf
- Description:
- 1500W, 19.8V, 10%, UNIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
SMCJ16 from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 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-designed for automotive load-dump and inductive switching protection in power supply rails.
For engineers reviewing the SMCJ16 datasheet, SMCJ16 pinout, SMCJ16 application, or SMCJ16 equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, junction temperature derating above 25°C, moisture sensitivity level (MSL 1), and compatibility with automated SMT placement on 12V/24V vehicle subsystems.
Technical Context
The SMCJ16 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (17.8–21.8V @ 1mA test current); it clamps transients to ≤28.8V at 54A (10/1000μs waveform), limiting energy dissipation to 1500W for non-repetitive pulses. Its glass-passivated junction ensures stable breakdown and low leakage (<1μA @ 16V).
Thermal design relies on RθJA = 55°C/W and RθJC = 10°C/W, supporting operation from –55°C to +150°C junction temperature. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for the molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 17.8 / 21.8 V @ 1 mA - Ensures reliable turn-on margin above system rail during transients |
| VC @ IPPM | 28.8 V @ 54 A - Clamped voltage limits downstream IC stress during 10/1000μs surge events |
| PPK | 1500 W - Peak pulse power handling per single non-repetitive event (per Fig.5) |
| IR @ VWM | <1 μA - Negligible leakage current preserves standby power integrity in 12V systems |
| Package | DO-214AB (SMC) - Standardized SMT footprint compatible with IPC-7351B land patterns |
Pinout & Package
DO-214AB (SMC) package: surface-mount, molded plastic case with cathode band marking; matte tin-plated leads; polarity indicated by cathode band (unidirectional configuration only); weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Fast response time | <1.0 ps from 0 V to VBR min - Enables suppression before sensitive ICs experience latch-up or gate oxide damage |
| MSL Level 1 rating | Unlimited floor life at ≤30°C/60% RH - Eliminates bake requirements prior to reflow assembly |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12V battery-fed ECU power input subjected to load-dump spikes up to 40V per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges before DC-DC converter input stage. Use Value: Limits voltage seen by upstream regulator to ≤28.8V, preventing overvoltage shutdown or internal FET failure. | Use Scenario: 24V digital input module exposed to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: SMCJ16 installed across input terminals to absorb 1500W transients without degradation. Use Value: Maintains signal integrity and prevents false triggering of microcontroller GPIOs during relay coil de-energization. |
| LED Driver Overvoltage Clamp | Telecom Line Interface Protection |
Use Scenario: Constant-current LED driver board powered from 12V supply in outdoor signage subject to lightning-induced surges. IC Role / Device Role / Timing Role: TVS placed at DC input to protect buck controller IC and MOSFET gate driver. Use Value: Clamps 10/1000μs transients to 28.8V, avoiding thermal runaway in high-side switch FETs. | Use Scenario: Low-voltage auxiliary power rail (12V) feeding RS-485 transceivers in building automation nodes. IC Role / Device Role / Timing Role: SMCJ16 used on VCC line to suppress EFT bursts (IEC 61000-4-4) and capacitive discharge events. Use Value: Prevents latch-up in isolated RS-485 PHYs by limiting rail excursion during fast transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | 600W PPK rating, SMB package (smaller footprint), lower VC = 26.0V @ 60A | Lower power handling suits consumer-grade 12V interfaces; not rated for ISO 7637-2 Pulse 5a | Select SMBJ16A only where peak surge energy is ≤600W and space-constrained layouts prohibit SMC size |
| 1.5KE16A | Through-hole TO-204AA (DO-41), 1500W PPK, VC = 25.5V @ 59A, slower thermal response | Requires wave soldering; unsuitable for high-density SMT assemblies or automated placement | Choose 1.5KE16A only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency |
Compared with SMBJ16A and 1.5KE16A, the SMCJ16 delivers identical 1500W surge capability in an SMT-optimized DO-214AB package with full ISO 7637-2 validation-making it the preferred choice for automotive and industrial PCBs requiring automated assembly and robust load-dump immunity.
Availability
SMCJ16 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, LED driver power inputs, and telecom auxiliary power rails requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for SMCJ16 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, and power management components since 1979.
The SMCJ series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, MSL 1 process compatibility, and ruggedized packaging for harsh ambient conditions.
FAQ
What is the clamping voltage of the SMCJ16 under standard test conditions?
The SMCJ16 has a maximum clamping voltage (VC) of 28.8 V at 54 A peak pulse current (10/1000 μs waveform), as specified in the Taiwan Semiconductor datasheet. This value defines the upper voltage limit imposed on protected circuitry during transient events and is critical for ensuring downstream ICs remain within safe operating voltage margins. The SMCJ16 achieves this clamping performance while sustaining 1500W peak pulse power.
Is the SMCJ16 suitable for bidirectional transient protection?
No, the SMCJ16 is a unidirectional TVS diode intended for DC circuits with defined polarity. For bidirectional protection, the SMCJ16CA variant must be used-its marking code is GEN and it features symmetrical breakdown in both directions. The standard SMCJ16 lacks reverse conduction capability and will not suppress positive transients on grounded lines.
What is the maximum junction temperature rating for the SMCJ16?
The SMCJ16 has a maximum junction temperature (TJ) rating of +150°C and a minimum of –55°C, enabling operation in under-hood automotive environments and industrial enclosures without active cooling. Its RθJA of 55°C/W requires adequate copper area on PCBs to maintain junction temperature below this limit during repetitive surge events.
Does the SMCJ16 meet RoHS and halogen-free requirements?
Yes, the SMCJ16 is RoHS compliant and halogen-free per IEC 61249-2-21. The device uses lead-free matte tin plating on leads and a UL 94V-0 compliant molding compound. These material qualifications support compliance with environmental directives in automotive and industrial end equipment without requiring special handling or exemptions.
How does the SMCJ16 compare to the SMCJ16A variant?
The SMCJ16A offers tighter VBR tolerance (17.8–19.7 V vs. 17.8–21.8 V for SMCJ16) and lower clamping voltage (26.0 V vs. 28.8 V at rated current), resulting in improved protection margin for precision 12V systems. Both share identical DO-214AB packaging, 1500W PPK rating, and ISO 7637-2 qualification-but SMCJ16A's enhanced parameters make it preferable where clamping consistency is critical.
SMCJ16 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ16 FAQ
1.How can I place an order for SMCJ16 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16 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 SMCJ16 reliable?
The price and inventory of SMCJ16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16 is usually 5 days.
3.What payment methods are accepted for SMCJ16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16?
SMCJ16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16 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 SMCJ16?
For technical support, including SMCJ16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16 requirements.
6.How does Aetrix verify that SMCJ16 is sourced from the original manufacturer or authorized distributors?
All SMCJ16 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 SMCJ16 meets industry standards.
7.What is the process for return or replacement of SMCJ16?
All SMCJ16 units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16, 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 SMCJ16 part is unused and in its original packaging.
Return procedure for SMCJ16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ16 Tags
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