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STMicroelectronics SMC30J16CA
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- Part No.:
- SMC30J16CA
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J16CA.pdf
- Description:
- TVS DIODE 16VWM 26VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,243
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Product details
Overview
SMC30J16CA from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode designed for high-energy ESD and surge protection in power and signal lines. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 26 V (max) under 115 A surge current, and operates up to 175 °C junction temperature - enabling robust protection in industrial motor drives, telecom power supplies, and automotive body control modules.
For engineers reviewing the SMC30J16CA datasheet, SMC30J16CA pinout, SMC30J16CA application, or SMC30J16CA equivalent, key selection criteria include its 16 V standoff voltage (VRM), bidirectional polarity, low 0.2 µA leakage at 25 °C, JEDEC-standard SMC package, and IEC 61000-4-2 ±30 kV contact/air discharge compliance.
Technical Context
This TVS diode uses planar silicon junction technology to achieve stable clamping performance across temperature (αT = 8.8 × 10⁻⁴ /°C) and high thermal endurance. Its dynamic resistance (RD = 17.1 mΩ) ensures minimal voltage overshoot during fast transients, while junction capacitance remains below 100 pF at VR = 0 V (f = 1 MHz), supporting signal integrity in data-line protection.
The device meets MIL-STD-883 Method 3015 for ESD immunity and IEC 61000-4-4 Level 4 (4 kV), with surge capability validated for both polarities. Its MSL Level 1 rating and matte tin lead finish support lead-free reflow compatibility per J-STD-020 and JESD 22-B102 E3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 16 V - maximum continuous reverse operating voltage before breakdown; defines minimum system operating margin. |
| Breakdown Voltage (VBR) | 17.8–19.6 V at 1 mA - precise threshold for initiating clamping; enables predictable overvoltage response. |
| Clamping Voltage (VCL) | 26 V max at 115 A (10/1000 μs) - limits protected circuit voltage during surge; critical for downstream IC survival. |
| Peak Pulse Power (PPP) | 3000 W (10/1000 μs) - energy-handling capacity for repetitive surges; supports industrial-grade reliability. |
| Leakage Current (IRM) | 0.2 µA at VRM and 25 °C - negligible standby power loss; essential for battery-powered or low-power sensor nodes. |
| Junction Temperature Range | −55 °C to +175 °C - enables operation in under-hood automotive, industrial inverters, and high-ambient environments. |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact & air) - exceeds Level 4; eliminates need for external ESD staging in USB, CAN, or RS-485 interfaces. |
Pinout & Package
SMC30J16CA is housed in a JEDEC-registered SMC (DO-214AB) surface-mount package with matte tin-plated leads, optimized for thermal dissipation on FR4 PCBs with recommended 5.11 mm × 8.19 mm footprint. The bidirectional configuration has no anode/cathode distinction - both terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Surge return path (bidirectional) | Shared terminal for both polarities; connects to ground or common reference plane for clamping symmetry. |
| Anode (A) | Surge input path (bidirectional) | Shared terminal for both polarities; connects to protected line (e.g., CAN_H, RS-485 A/B, DC bus). |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated to 175 °C junction - maintains clamping stability in engine-control units and industrial SMPS without derating. |
| Low dynamic resistance | 17.1 mΩ - reduces clamping voltage rise under high di/dt surges, improving protection margin for 3.3 V/5 V logic rails. |
| Ultra-low leakage | 0.2 µA at VRM - prevents signal distortion and power drain in high-impedance analog sensor inputs or battery-backed circuits. |
| JEDEC-compliant footprint | IPC-7531-recommended pad layout - ensures manufacturability, solder joint reliability, and thermal transfer in volume production. |
| Bidirectional symmetry | No polarity marking required - simplifies PCB layout and assembly for AC-coupled or differential bus protection (e.g., CAN FD, RS-485). |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate driver supply rails against inductive kickback from IGBT/MOSFET switching in 24 V DC bus systems. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between VDD and GND near driver IC, responding within <1 ns to sub-100 ns transients. Use Value: Prevents latch-up or permanent damage to isolated gate drivers (e.g., STGAP2S) by limiting voltage to ≤26 V during 115 A surges. |
Use Scenario: ESD hardening of LIN bus physical layer in door module ECUs exposed to human touch and cable harness coupling. IC Role / Device Role / Timing Role: Line-to-ground TVS on LIN signal line, absorbing ±30 kV contact discharge per IEC 61000-4-2 without signal degradation. Use Value: Maintains LIN communication integrity (<100 pF capacitance) while surviving repeated ESD events in vehicle assembly and service environments. |
| Telecom Power Supplies | Smart Energy Meters |
|
Use Scenario: Input-stage surge protection for 48 V DC telecom rectifiers subjected to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary clamping device across DC input terminals, coordinated with MOVs to handle combined 10/1000 μs and 8/20 μs waveforms. Use Value: Delivers 3000 W peak power handling and 4 kV IEC 61000-4-4 Level 4 immunity, extending PSU MTBF in outdoor cabinet deployments. |
Use Scenario: Protection of metrology ADC inputs and PLC communication interfaces against EFT bursts in utility-grade electricity meters. IC Role / Device Role / Timing Role: Low-leakage TVS on analog front-end inputs and HPLC signal paths, ensuring measurement accuracy remains unaffected during transient events. Use Value: 0.2 µA leakage preserves ADC reference stability; 175 °C rating supports operation inside sealed, thermally constrained meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA (Bourns) | Same VRM (16 V), lower PPP (600 W), higher VCL (26.9 V @ 23.5 A), SMB package (smaller thermal mass) | Limited to lower-energy surges; unsuitable for 3000 W industrial transients | Select only for space-constrained consumer electronics where 600 W surge immunity suffices. |
| 1.5KE16CA (Littelfuse) | Same VRM (16 V), higher VCL (26.5 V @ 113 A), axial DO-15 package, 1500 W PPP (10/1000 μs) | Through-hole mounting; incompatible with automated SMT lines; lower thermal cycling reliability | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency. |
Compared with SMBJ16CA and 1.5KE16CA, SMC30J16CA uniquely combines 3000 W surge rating, SMT-compatible SMC packaging, and 175 °C operation - making it the sole option for high-reliability, high-power, surface-mount TVS requirements in automotive and industrial power systems.
Availability
SMC30J16CA is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and smart energy meters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMC30J16CA 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MEMS, and microcontroller technologies for automotive, industrial, and consumer markets.
The SMC30J TVS series was developed to address high-energy transient protection needs in next-generation power conversion and connectivity systems - emphasizing thermal robustness, low leakage, and full IEC/EN compliance in compact SMT packages.
FAQ
What is the maximum clamping voltage for SMC30J16CA under a 10/1000 μs surge?
The maximum clamping voltage (VCL) for SMC30J16CA is 26 V when subjected to a 115 A peak pulse current with a 10/1000 μs waveform at 25 °C ambient. This value increases with junction temperature at a coefficient of 8.8 × 10⁻⁴ /°C, reaching approximately 27.2 V at 125 °C junction temperature.
Is SMC30J16CA suitable for protecting RS-485 differential pairs?
Yes - its bidirectional symmetry, low 100 pF junction capacitance at 0 V, and 26 V clamping voltage make it ideal for line-to-line or line-to-ground protection on RS-485 buses. It preserves signal integrity up to 25 Mbps while meeting IEC 61000-4-4 Level 4 and ±30 kV ESD requirements without adding termination mismatch.
Does SMC30J16CA require derating above 25 °C ambient temperature?
Yes - its peak pulse power rating decreases with rising junction temperature, dropping to ~2200 W at 100 °C TJ and ~1400 W at 150 °C TJ per Figure 3 in DS8598 Rev 8. Designers must calculate actual TJ using thermal resistance data (Rth(j-a) ≈ 3.5 °C/W on recommended footprint) and apply appropriate safety margins for sustained surge duty cycles.
How does the SMC package of SMC30J16CA compare to SMA in thermal performance?
The SMC package offers ~30% lower thermal resistance than SMA due to larger copper area (E2 = 4.4–4.7 mm vs. SMA's ~3.5 mm) and longer leads (L = 0.75–1.50 mm), resulting in Rth(j-a) ≈ 3.5 °C/W versus ~5.0 °C/W for SMA. This enables higher sustained surge repetition rates and improved reliability in thermally demanding applications like motor drive DC links.
SMC30J16CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AB, SMC
- Series:
- SMC30J
- 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:
- 26V
- Current - Peak Pulse (10/1000µs):
- 115A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
SMC30J16CA FAQ
1.How can I place an order for SMC30J16CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J16CA 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 SMC30J16CA reliable?
The price and inventory of SMC30J16CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J16CA is usually 5 days.
3.What payment methods are accepted for SMC30J16CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J16CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J16CA?
SMC30J16CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J16CA 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 SMC30J16CA?
For technical support, including SMC30J16CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J16CA requirements.
6.How does Aetrix verify that SMC30J16CA is sourced from the original manufacturer or authorized distributors?
All SMC30J16CA 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 SMC30J16CA meets industry standards.
7.What is the process for return or replacement of SMC30J16CA?
All SMC30J16CA units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J16CA, 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 SMC30J16CA part is unused and in its original packaging.
Return procedure for SMC30J16CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC30J16CA Tags
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