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STMicroelectronics SMC30J6.0CA
- Part No.:
- SMC30J6.0CA
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J6.0CA.pdf
- Description:
- TVS DIODE 6VWM 10.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,255
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Product details
Overview
SMC30J6.0CA 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 10.3 V (max) under 291 A surge current, and operates up to 175 °C junction temperature - enabling robust protection in industrial power supplies, automotive body electronics, and PoE-powered devices.
For engineers reviewing the SMC30J6.0CA datasheet, SMC30J6.0CA pinout, SMC30J6.0CA application, or SMC30J6.0CA equivalent, key selection criteria include bidirectional standoff voltage (6.0 V), low leakage (≤20 µA at VRM), JEDEC-registered SMC package compatibility, and IEC 61000-4-2 ±30 kV contact/air discharge compliance.
Technical Context
This TVS diode uses planar silicon technology to achieve low dynamic resistance (1580 mΩ max), stable clamping performance across temperature (αT = 4.62 × 10⁻⁴ /°C), and minimal capacitance - critical for protecting high-speed interfaces without signal degradation. Its bidirectional architecture ensures symmetrical clamping on both polarities of AC-coupled or floating lines.
Rated for 175 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it supports lead-free reflow soldering per J-STD-020 with peak profile up to 245 °C. The device meets IEC 61000-4-4 Level 4 (4 kV) and exceeds IEC 61000-4-2 Level 4 (±30 kV), making it suitable for harsh EMC environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 6.0 V - Maximum continuous reverse operating voltage before breakdown; defines minimum system operating margin. |
| Breakdown Voltage (VBR min) | 6.7 V at 10 mA - Guaranteed conduction onset threshold; ensures reliable triggering before downstream IC damage. |
| Clamping Voltage (VCL max) | 10.3 V at 291 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines safe voltage headroom. |
| Peak Pulse Power (PPP) | 3000 W (10/1000 µs) - Sustained energy-handling capability for repetitive surges in industrial power rails. |
| Leakage Current (IRM max) | 20 µA at 6.0 V and 25 °C - Negligible standby power loss; preserves battery life and signal integrity in low-power sensors. |
| Junction Temperature Range | –55 °C to +175 °C - Enables deployment in under-hood automotive, motor drives, and outdoor telecom equipment. |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact & air) - Full immunity to human-body-model discharges without derating or external shielding. |
Pinout & Package
The SMC30J6.0CA is housed in a JEDEC-registered SMC (DO-214AB) surface-mount package with matte tin-plated leads, optimized for thermal dissipation and automated assembly. Package dimensions: 7.75–8.15 mm length (E), 5.55–6.25 mm width (D), 2.45 mm height (A2 max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Reference terminal for unidirectional polarity | In bidirectional configuration (CA suffix), this terminal serves as symmetric anode/cathode node - no fixed polarity; enables AC line protection without orientation constraints. |
| Anode | Reference terminal for unidirectional polarity | Electrically identical to cathode in CA variant; forms symmetrical P-N junction pair across both terminals for equal clamping in either direction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled data lines (e.g., RS-485, CAN FD) without polarity concerns or external diode networks. |
| Low dynamic resistance (RD) | 1580 mΩ max - minimizes clamping voltage rise under high di/dt transients, preserving voltage margin for 3.3 V/5 V logic interfaces. |
| High-temperature operation | 175 °C Tj max - eliminates derating in enclosed power converters and engine-control modules where ambient exceeds 105 °C. |
| JEDEC-compliant footprint | IPC-7531-recommended pad layout - ensures mechanical reliability and solder joint integrity during thermal cycling in automotive-grade assemblies. |
| Whisker-resistant plating | JESD201 Class 2 tin finish - prevents conductive filament growth in long-life industrial systems operating >10 years without maintenance. |
Applications
| Industrial Power Supply Inputs | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protecting 12 V DC input rails in programmable logic controllers against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge clamp placed upstream of DC-DC converters and microcontrollers to limit transient overvoltage. Use Value: Withstands 3000 W surges while clamping below 10.3 V, preventing latch-up or gate oxide rupture in downstream 12 V-rated ICs. |
Use Scenario: Safeguarding LIN bus transceivers and door module sensors from ESD events during vehicle assembly and service. IC Role / Device Role / Timing Role: Bidirectional shunt protector on bidirectional LIN signal line (VPW), absorbing ±30 kV contact discharge per IEC 61000-4-2. Use Value: Symmetrical clamping ensures no signal inversion or DC offset; low leakage avoids false wake-up in sleep-mode LIN nodes. |
| POE-Powered Network Devices | AC-DC Adapter Secondary Side |
|
Use Scenario: Protecting 48 V PoE PD (Powered Device) inputs against induced surges from Ethernet cable coupling and hot-swap transients. IC Role / Device Role / Timing Role: Secondary-stage TVS on isolated DC output rail, coordinated with primary-side MOVs to distribute surge energy. Use Value: 3000 W rating handles combined lightning-induced surges; 175 °C rating supports sealed enclosures with limited airflow. |
Use Scenario: Clamping rectified AC output in compact wall adapters to prevent overvoltage failure of output capacitors and LDOs. IC Role / Device Role / Timing Role: Fast-response shunt element across bulk capacitor, triggered within nanoseconds to suppress ringing and overshoot. Use Value: Low VBR (6.7 V min) and tight tolerance (±5%) ensure precise activation just above nominal 5 V/9 V/12 V outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0CA (STMicroelectronics) | Lower PPP (600 W), same VRM/VBR, SMB package (smaller footprint, lower thermal mass) | Restricted to low-energy surges (e.g., USB ports, sensor I/O); unsuitable for 12 V power rail protection | Select when board space is constrained and surge threat level is ≤600 W (10/1000 µs). |
| SAC5.0-01A (Littelfuse) | Same 3000 W rating, but unidirectional; requires dual-device configuration for AC protection | Increases BOM count and PCB area; introduces asymmetry in clamping behavior on AC lines | Choose only if existing design mandates unidirectional topology or legacy SAC footprint compatibility. |
Compared with SMBJ6.0CA, SMC30J6.0CA provides 5× higher surge energy handling and superior thermal robustness; versus SAC5.0-01A, it eliminates dual-diode complexity and ensures matched bidirectional response critical for differential buses.
Availability
SMC30J6.0CA is available at Aetrix Electronics and suitable for industrial power supply inputs, automotive body control modules, PoE-powered network devices, and AC-DC adapter secondary side applications requiring stable component supply across extended product lifecycles.
Supply support for SMC30J6.0CA 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, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.
The SMC30J series belongs to ST's high-power TVS portfolio, engineered specifically for demanding surge immunity in automotive power distribution, industrial automation, and infrastructure equipment where reliability under extreme thermal and electrical stress is non-negotiable.
FAQ
What is the difference between SMC30J6.0A and SMC30J6.0CA?
The "A" suffix denotes unidirectional operation (anode-cathode polarity), while "CA" indicates bidirectional symmetry - meaning both terminals behave identically under positive or negative transients. SMC30J6.0CA is required for AC-coupled or floating signal lines like RS-485, CAN, or LIN, whereas SMC30J6.0A suits DC rails with defined ground reference.
Can SMC30J6.0CA be used in parallel for higher surge current handling?
No - TVS diodes exhibit parametric mismatch (VBR tolerance, dynamic resistance), causing current imbalance and potential thermal runaway. For higher current, select a single higher-rated device (e.g., SMC50J6.0CA) or implement coordinated staged protection with upstream MOVs and downstream low-capacitance TVS arrays.
Does SMC30J6.0CA require derating at elevated ambient temperatures?
Yes - its 3000 W peak pulse power is specified at Tj initial = 25 °C. At 100 °C ambient, maximum allowable PPP drops to ~1800 W (per Figure 3), due to reduced thermal headroom. Designers must verify clamping voltage and junction temperature using the provided αT coefficient (4.62 × 10⁻⁴ /°C) and thermal resistance data.
Is the SMC30J6.0CA RoHS and REACH compliant?
Yes - it carries ST's ECOPACK2 environmental grade certification, confirming compliance with RoHS Directive 2011/65/EU, REACH Regulation (EC) No. 1907/2006, and halogen-free requirements (≤900 ppm Br, ≤900 ppm Cl). Full material declarations and test reports are available via ST's product webpage and Aetrix's compliance portal.
SMC30J6.0CA 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):
- 6V
- Voltage - Breakdown (Min):
- 6.7V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 291A
- 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
SMC30J6.0CA FAQ
1.How can I place an order for SMC30J6.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J6.0CA 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 SMC30J6.0CA reliable?
The price and inventory of SMC30J6.0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J6.0CA is usually 5 days.
3.What payment methods are accepted for SMC30J6.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J6.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J6.0CA?
SMC30J6.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J6.0CA 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 SMC30J6.0CA?
For technical support, including SMC30J6.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J6.0CA requirements.
6.How does Aetrix verify that SMC30J6.0CA is sourced from the original manufacturer or authorized distributors?
All SMC30J6.0CA 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 SMC30J6.0CA meets industry standards.
7.What is the process for return or replacement of SMC30J6.0CA?
All SMC30J6.0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J6.0CA, 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 SMC30J6.0CA part is unused and in its original packaging.
Return procedure for SMC30J6.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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