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STMicroelectronics SMC30J16A
- Part No.:
- SMC30J16A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J16A.pdf
- Description:
- TVS DIODE 16VWM 26VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:837
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Product details
Overview
SMC30J16A from STMicroelectronics is a unidirectional transient voltage suppression (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 26 V (max) under 115 A surge current, and features low leakage (0.2 µA at 25 °C) and high junction temperature rating (175 °C). It is used in industrial power supplies and telecom interfaces requiring IEC 61000-4-2 ±30 kV ESD and IEC 61000-4-4 level 4 (4 kV) surge immunity.
For engineers reviewing the SMC30J16A datasheet, SMC30J16A pinout, SMC30J16A application, or SMC30J16A equivalent, key selection criteria include clamping voltage (26 V), standoff voltage (16 V), surge current handling (115 A), thermal robustness (Tj max = 175 °C), and SMC package compatibility with IPC7531 footprints.
Technical Context
The SMC30J16A employs planar junction technology to achieve low dynamic resistance (17.1 mΩ) and stable clamping performance across temperature. Its unidirectional configuration enables asymmetric protection on positive-rail applications without reverse conduction path.
It meets IEC 61000-4-2 (±30 kV contact/air discharge) and IEC 61000-4-4 level 4 (4 kV), with VBR min = 17.8 V and VCL max = 26 V at IPP = 115 A (10/1000 μs). Junction capacitance is not specified for unidirectional types per datasheet - only bidirectional variants list CJ curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 16 V - Maximum continuous reverse operating voltage before breakdown; defines rail compatibility for 15 V DC systems. |
| Breakdown Voltage (VBR min) | 17.8 V - Guaranteed minimum voltage at 1 mA test current; ensures reliable triggering above system nominal voltage. |
| Clamping Voltage (VCL max) | 26 V at 115 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs. |
| Peak Pulse Power (PPP) | 3000 W (10/1000 μs) - Energy-handling capacity for standard lightning/surge waveforms; supports industrial-grade immunity. |
| Leakage Current (IRM) | 0.2 µA at VRM = 16 V and 25 °C - Negligible standby power loss; critical for battery-backed or low-power sensor nodes. |
| Junction Temperature Range | –55 °C to +175 °C - Enables operation in harsh environments including motor drives and outdoor telecom enclosures. |
| Package | SMC (DO-214AB) - Standardized JEDEC outline with 7.75–8.15 mm body width; supports automated placement and IPC7531-compliant footprint. |
Pinout & Package
SMC30J16A uses the industry-standard SMC (DO-214AB) surface-mount package: 7.75–8.15 mm length × 5.55–6.25 mm width × 2.45 mm height, matte tin-plated leads, MSL Level 1, and compatible with reflow profiles up to 245 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Surge current sink node | Connected to protected line; conducts during overvoltage events to clamp voltage to safe levels. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes surge current path during transient. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV contact/air discharge - exceeds level 4, enabling direct interface with user-accessible ports without external shielding. |
| Low dynamic resistance | 17.1 mΩ - minimizes clamping voltage rise under high-current surges, improving protection margin for 24 V systems. |
| High-temperature operation | Tj max = 175 °C - sustains reliability in thermally constrained spaces like enclosed power converters and automotive ECUs. |
| JEDEC-registered SMC package | Standardized mechanical dimensions and thermal profile - ensures consistent solder joint integrity and board-level manufacturability. |
| UL94 V0 flammability rating | Self-extinguishing epoxy housing - satisfies safety requirements for industrial and medical equipment enclosures. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power module exposed to induced surges from nearby motor switching. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between +24 V rail and chassis ground to shunt transients before they reach DC-DC converter ICs. Use Value: Clamps 115 A surge to ≤26 V, preventing latch-up or damage to upstream rectifier and downstream buck controller. |
Use Scenario: RS-485 data line in outdoor base station equipment subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Rail-to-ground TVS on VCC supply line feeding isolated RS-485 transceiver, complementing differential-line protection. Use Value: Absorbs 4 kV IEC 61000-4-4 bursts without degradation, maintaining 175 °C junction capability during repeated events. |
| Automotive Body Control Module (BCM) Power Input | Smart Meter AC/DC Power Stage |
Use Scenario: 12 V battery-supplied BCM experiencing load dump and ISO 7637-2 pulse 5a (75 V/350 ms). IC Role / Device Role / Timing Role: Primary clamping device on main power rail, coordinated with upstream fuse and secondary LC filter. Use Value: Withstands 175 °C junction temperature and maintains <0.2 µA leakage at 16 V, reducing quiescent current drain in sleep mode. |
Use Scenario: Secondary-side 15 V DC output of smart meter SMPS, protecting metering SoC and RTC backup circuitry. IC Role / Device Role / Timing Role: Standoff-rated TVS on regulated 15 V rail, selected for precise 16 V VRM to avoid false triggering during brownout conditions. Use Value: 17.8 V VBR min ensures no conduction during normal 15 V ±10% operation while responding within nanoseconds to fast transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A (ON Semiconductor) | Same VRM (16 V), lower PPP (600 W), higher VCL (28.8 V at 21 A), SMB package (smaller footprint, lower thermal mass) | Limited to sub-1 kV surge environments; unsuitable for IEC 61000-4-4 level 4 or 3000 W surges | Select only when space-constrained and surge threat is limited to ESD-only scenarios. |
| 1.5KE16A (Littelfuse) | Same VRM (16 V), axial-leaded DO-201 package, 1500 W PPP, VCL = 25.5 V at 59 A, higher leakage (1 µA) | Requires through-hole assembly; less suitable for high-density PCBs or automated SMT lines | Choose only for legacy designs or where manual repair/rework is preferred over SMT reliability. |
Compared with SMBJ16A and 1.5KE16A, SMC30J16A uniquely combines 3000 W surge rating, 175 °C operation, and SMC SMT packaging - making it the only option among the three qualified for industrial 4 kV surge immunity with automated manufacturing support.
Availability
SMC30J16A is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure interfaces, automotive body control modules, and smart metering systems requiring stable component supply and long-term lifecycle assurance.
Supply support for SMC30J16A 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, delivering silicon solutions for automotive, industrial, and power management applications.
The SMC30J series belongs to ST's high-power TVS portfolio, engineered specifically for robust front-end surge protection in harsh-environment power conversion and communication systems.
FAQ
What is the maximum clamping voltage of SMC30J16A under a 10/1000 μs surge?
The maximum clamping voltage (VCL) is 26 V at 115 A peak pulse current for the 10/1000 μs waveform, as specified in Table 2 of DS8598 Rev 8. This value is measured at Tamb = 25 °C and represents the upper limit of voltage imposed on the protected circuit during standardized surge testing.
Is SMC30J16A suitable for bidirectional signal line protection?
No - SMC30J16A is unidirectional and intended for DC rail protection only. For bidirectional signal lines such as USB or RS-485, the bidirectional variant SMC30J16CA must be used, which provides symmetrical clamping in both polarities and is marked with "3BAI" per Table 6.
Does SMC30J16A meet automotive AEC-Q200 qualification?
No - SMC30J16A is not AEC-Q200 qualified. While it operates up to 175 °C and meets IEC 61000-4-2/4-4 standards, ST does not list it in its AEC-Q200-certified TVS portfolio. Automotive designers requiring qualification should consider ST's SMAJ or SMCJ AEC-Q200 series instead.
What is the recommended PCB footprint for SMC30J16A?
The recommended footprint matches IPC7531 and JEDEC DO-214AB standards: 8.19 mm pad length × 3.14 mm pad width × 5.11 mm center-to-center spacing, with 1.54 mm solder mask opening per pad. Figure 14 in DS8598 Rev 8 provides exact dimensions in millimeters and inches.
SMC30J16A 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:
- 1
- Bidirectional Channels:
- -
- 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
SMC30J16A FAQ
1.How can I place an order for SMC30J16A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J16A 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 SMC30J16A reliable?
The price and inventory of SMC30J16A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J16A is usually 5 days.
3.What payment methods are accepted for SMC30J16A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J16A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J16A?
SMC30J16A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J16A 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 SMC30J16A?
For technical support, including SMC30J16A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J16A requirements.
6.How does Aetrix verify that SMC30J16A is sourced from the original manufacturer or authorized distributors?
All SMC30J16A 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 SMC30J16A meets industry standards.
7.What is the process for return or replacement of SMC30J16A?
All SMC30J16A units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J16A, 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 SMC30J16A part is unused and in its original packaging.
Return procedure for SMC30J16A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC30J16A Tags
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