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STMicroelectronics SMC30J13A
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- Part No.:
- SMC30J13A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J13A.pdf
- Description:
- TVS DIODE 13VWM 21.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
SMC30J13A from STMicroelectronics is a unidirectional 3000 W transient voltage suppression diode designed for primary-level ESD and surge protection in DC power rails and signal lines. It features a 13 V standoff voltage (VRM), 14.2–15.8 V breakdown voltage (VBR) at 1 mA, 21.5 V clamping voltage (VCL) at 40.7 A (10/1000 µs), 0.2 µA leakage at 25 °C, and operates up to 175 °C junction temperature - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMC30J13A datasheet, SMC30J13A pinout, SMC30J13A application, or SMC30J13A equivalent, key selection criteria include clamping performance under 10/1000 µs surges, low-leakage operation at elevated temperatures, JEDEC-registered SMC package compatibility with IPC-7531 footprints, and IEC 61000-4-2 ±30 kV contact/air discharge compliance.
Technical Context
The SMC30J13A uses planar silicon avalanche technology to achieve precise VBR tolerance (±5% typical), low dynamic resistance (11.5 mΩ), and stable thermal coefficient (αT = 10.4 × 10⁻⁴ /°C). Its unidirectional architecture enables asymmetric conduction - forward-biased during overvoltage events while maintaining high-impedance reverse blocking below VRM.
It delivers 3000 W peak pulse power (10/1000 µs) at 25 °C, derating to ~1900 W at 125 °C per Figure 3, and supports 40 kW surge capability under 8/20 µs waveforms. Junction capacitance is not specified for unidirectional types in the datasheet, confirming its use in low-frequency power rail protection rather than high-speed data lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 3000 W - sustains 40.7 A surge current without failure in standard power supply input stages |
| Standoff Voltage (VRM) | 13 V - blocks normal operating voltages up to 13 V DC before clamping activates |
| Breakdown Voltage (VBR) | 14.2–15.8 V at 1 mA - defines precise turn-on threshold for reliable overvoltage detection |
| Clamping Voltage (VCL) | 21.5 V at 40.7 A - limits downstream voltage stress to safe levels during transients |
| Leakage Current (IRM) | 0.2 µA at 25 °C - minimizes standby power loss in battery-backed or energy-sensitive systems |
| Junction Temperature Range | −55 to +175 °C - enables deployment in under-hood automotive and industrial motor drive environments |
| ESD Robustness | ±30 kV (IEC 61000-4-2, contact & air) - exceeds Level 4 immunity for front-panel interfaces and sensor inputs |
Pinout & Package
The SMC30J13A is housed in a JEDEC-registered SMC (DO-214AB) surface-mount package with matte tin-plated leads, compatible with IPC-7531 footprint and reflow soldering per J-STD-020 MSL level 1. Thermal resistance is 3.5 °C/W with 5 cm² copper area per lead (Figure 12).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Surge Current Sink | Connected to protected line; conducts transient energy to ground when voltage exceeds VBR |
| Anode | Reference Node | Tied to system ground or low-impedance return path; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Ratio | VCL/VBR ≈ 1.45 - ensures minimal overvoltage overshoot relative to breakdown threshold |
| High-Temperature Stability | 175 °C max Tj with <10% VBR drift - maintains protection integrity in thermally stressed enclosures |
| Low Dynamic Resistance | 11.5 mΩ - reduces voltage rise under high di/dt surges, improving clamping fidelity |
| UL94 V0 Flame Rating | Self-extinguishing epoxy body - satisfies safety requirements for enclosed industrial equipment |
| JEDEC-Compliant Outline | SMC package (EIAJ ED-732AC) - guarantees mechanical interoperability with automated placement and reflow processes |
Applications
| Industrial SMPS Input Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: 24 V DC input stage of switch-mode power supply exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge clamp on main DC bus, absorbing 3000 W transients within 10/1000 µs window. Use Value: Prevents MOSFET gate oxide damage and controller IC latch-up by limiting bus voltage to ≤21.5 V during surges. |
Use Scenario: LIN bus power rail and sensor supply lines in door module electronics. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to suppress ESD and coupled noise. Use Value: Maintains <0.2 µA leakage at 85 °C ambient, avoiding battery drain in always-on vehicle subsystems. |
| Telecom Power Interface | Factory Automation I/O Terminal |
|
Use Scenario: 12 V auxiliary power input of remote radio unit subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense against 8/20 µs induced transients up to 40 kW peak power. Use Value: Clamps voltage within 21.5 V while sustaining 40.7 A surge - protects DC-DC converter input capacitors and FETs. |
Use Scenario: 24 V digital input channel of PLC I/O module connected to field sensors. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input line to prevent false triggering and component damage. Use Value: Withstands repeated ±30 kV ESD strikes without parameter shift, ensuring long-term reliability in dusty, high-static environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A (ON Semiconductor) | Same 13 V VRM, but lower 600 W rating (10/1000 µs); SMB package (smaller footprint, higher thermal resistance) | Limited to sub-20 A surge currents; unsuitable for 3000 W load-dump scenarios | Select only for space-constrained, low-energy signal-line protection where 600 W suffices |
| 1.5KE13A (Littelfuse) | Through-hole DO-201 package; identical 13 V VRM and 3000 W rating, but 250 °C max Tj and higher 25 µA leakage at 25 °C | Requires manual or wave soldering; higher leakage limits use in ultra-low-power monitoring circuits | Prefer for legacy through-hole designs or where elevated Tj margin (>175 °C) is critical |
Compared with SMBJ13A and 1.5KE13A, the SMC30J13A uniquely balances high surge capacity (3000 W), ultra-low leakage (0.2 µA), and surface-mount scalability in a thermally optimized SMC package - making it optimal for modern industrial and automotive power rail protection where board space, thermal management, and long-term stability are co-constrained.
Availability
SMC30J13A is available at Aetrix Electronics and suitable for industrial SMPS input protection, automotive BCM power rails, telecom power interfaces, and factory automation I/O terminals requiring stable component supply across extended temperature and surge stress conditions.
Supply support for SMC30J13A 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 innovative analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The SMC30J series belongs to ST's high-power TVS portfolio, engineered specifically for robust DC rail protection in harsh environments - emphasizing low leakage, high-temperature operation, and IEC-compliant ESD/surge resilience.
FAQ
What is the maximum clamping voltage of SMC30J13A under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 21.5 V at 40.7 A peak pulse current for a 10/1000 µs waveform, measured at 25 °C ambient. This value increases linearly with junction temperature due to αT = 10.4 × 10⁻⁴ /°C, reaching ~23.1 V at 125 °C junction temperature.
Is SMC30J13A suitable for bidirectional signal line protection?
No - SMC30J13A is unidirectional and intended for DC power rail protection where polarity is fixed. For bidirectional signal lines like USB or RS-485, the complementary SMC30J13CA variant must be used, which provides symmetrical clamping in both polarities.
Does SMC30J13A meet automotive AEC-Q200 qualification?
SMC30J13A is not AEC-Q200 qualified per ST's official documentation. While it operates up to 175 °C and meets IEC 61000-4-2/4-4, automotive-grade qualification requires additional stress testing (e.g., temperature cycling, humidity bias) not covered in DS8598 Rev 8.
What PCB layout practices improve thermal performance of SMC30J13A?
To optimize thermal dissipation, use ≥3.14 cm² copper area under each lead (per Figure 12), connect both pads to internal ground/power planes via multiple thermal vias, and avoid narrow traces between the TVS and protected node to minimize inductance during surge events.
SMC30J13A 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 140A
- 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
SMC30J13A FAQ
1.How can I place an order for SMC30J13A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J13A 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 SMC30J13A reliable?
The price and inventory of SMC30J13A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J13A is usually 5 days.
3.What payment methods are accepted for SMC30J13A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J13A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J13A?
SMC30J13A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J13A 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 SMC30J13A?
For technical support, including SMC30J13A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J13A requirements.
6.How does Aetrix verify that SMC30J13A is sourced from the original manufacturer or authorized distributors?
All SMC30J13A 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 SMC30J13A meets industry standards.
7.What is the process for return or replacement of SMC30J13A?
All SMC30J13A units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J13A, 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 SMC30J13A part is unused and in its original packaging.
Return procedure for SMC30J13A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC30J13A Tags
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