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STMicroelectronics SMC30J10CA
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- Part No.:
- SMC30J10CA
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J10CA.pdf
- Description:
- TVS DIODE 10VWM 17VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,205
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Product details
Overview
SMC30J10CA from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode designed for high-energy ESD and surge protection in DC power lines and signal interfaces. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 17 V (max) under 1 A test current, and operates up to 175 °C junction temperature - enabling robust protection in industrial power supplies and automotive body electronics.
For engineers reviewing the SMC30J10CA datasheet, SMC30J10CA pinout, SMC30J10CA application, or SMC30J10CA equivalent, key selection criteria include its 10 V standoff voltage, bidirectional polarity, low 0.2 µA leakage at 25 °C, JEDEC-registered SMC package, and IEC 61000-4-2 ±30 kV contact/air discharge compliance.
Technical Context
The SMC30J10CA uses planar silicon avalanche technology to achieve precise breakdown at 11.4–12.6 V (VBR @ IBR = 1 mA), with dynamic resistance of 7.78 mΩ enabling fast, low-clamping response during 8/20 μs surges up to 21.7 A. Its bidirectional architecture supports symmetrical protection on AC-coupled or floating lines without polarity dependency.
Thermal design is enabled by a maximum junction temperature of 175 °C and thermal impedance of ~100 °C/W (single pulse, FR4 PCB), while JEDEC-compliant SMC packaging ensures compatibility with standard reflow profiles and IPC-7531 footprints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 10 V - Maximum continuous reverse working voltage before conduction begins. |
| Breakdown Voltage (VBR) | 11.4–12.6 V @ 1 mA - Precise avalanche onset ensuring reliable triggering without premature leakage. |
| Clamping Voltage (VCL) | 17 V max @ 1 A (10/1000 μs) - Limits downstream voltage stress during surge events. |
| Peak Pulse Power | 3000 W @ 10/1000 μs - Sustains high-energy transients common in industrial power rail surges. |
| Leakage Current | 0.2 µA @ 10 V, 25 °C - Minimizes standby power loss and avoids false triggering in low-power circuits. |
| Junction Temperature Range | −55 to +175 °C - Supports operation in under-hood automotive and high-ambient industrial environments. |
| ESD Robustness | ±30 kV (IEC 61000-4-2, contact & air) - Exceeds Level 4 immunity for human-body-model ESD events. |
Pinout & Package
The SMC30J10CA is housed in a JEDEC-registered SMC (DO-214AB) surface-mount package with matte tin-plated leads, compatible with IPC-7531 footprint and J-STD-020 MSL level 1 handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Anode/Cathode reference for bidirectional symmetry | Identifies terminal orientation; device has identical electrical behavior in both directions - no functional anode/cathode distinction. |
| Anode (Unmarked End) | Anode/Cathode reference for bidirectional symmetry | Electrically interchangeable with marked terminal; bidirectional structure enables symmetric clamping on AC or floating nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge protection | Enables single-device protection on AC lines, differential buses, or ungrounded interfaces without polarity concerns. |
| Low dynamic resistance (7.78 mΩ) | Reduces clamping voltage rise under high-current surges, improving protection margin for downstream ICs. |
| High junction temperature rating (175 °C) | Permits placement near heat sources (e.g., power MOSFETs, inductors) without derating or thermal shutdown. |
| JEDEC SMC package with MSL level 1 | Eliminates moisture sensitivity concerns and supports standard reflow assembly without baking. |
| UL94 V0 flammability rating | Meets safety requirements for enclosed industrial and automotive enclosures subject to flame propagation testing. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus |
|---|---|
Use Scenario: Protecting 24 V DC input rails in programmable logic controllers (PLCs) against load dump and lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS clamp placed upstream of DC-DC converters and input filters to absorb 3000 W transients. Use Value: Prevents damage to upstream rectifiers and downstream regulators during 10/1000 μs surges up to 3000 W while maintaining <0.2 µA leakage at nominal 24 V. | Use Scenario: Safeguarding CAN_H/CAN_L differential pair in BCM against ESD events during connector mating/unmating. IC Role / Device Role / Timing Role: Bidirectional TVS placed across CAN bus lines to clamp ±30 kV ESD pulses without disrupting signal integrity. Use Value: Maintains <17 V clamping during 1 A surge, preserving CAN transceiver common-mode range and avoiding bus lockup. |
| Telecom DSL Line Interface | Smart Meter AC Mains Surge Protection |
Use Scenario: Protecting ADSL/VDSL line drivers and transformers from induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional TVS connected between tip/ring lines to suppress longitudinal surges while preserving low-capacitance signal path. Use Value: Delivers <17 V clamping at 1 A with 7.78 mΩ dynamic resistance, minimizing distortion on 1–30 MHz DSL signals. | Use Scenario: Secondary-level surge suppression on AC mains input stage of smart electricity meters exposed to utility grid transients. IC Role / Device Role / Timing Role: Back-to-back TVS configuration across L-N and L/N-PE to handle differential and common-mode surges per IEC 61000-4-4 Level 4. Use Value: Withstands 4 kV fast transients (IEC 61000-4-4) and maintains stable 10 V standoff under 85 °C ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA (STMicroelectronics) | Lower peak power (600 W), same 10 V standoff and bidirectional configuration. | Suitable only for lower-energy surges (e.g., board-level ESD), not 3000 W line surges. | Select when space-constrained SMB package is required and surge energy is ≤600 W. |
| SAC10-0.5 (Littelfuse) | Same 10 V standoff and bidirectional function, but 500 W peak power and higher clamping (19.9 V @ 1 A). | Designed for telecom/data line protection where lower capacitance (<100 pF) is prioritized over power handling. | Prefer for high-speed data lines where capacitance matters more than high-energy clamping. |
Compared with SMBJ10CA and SAC10-0.5, the SMC30J10CA provides triple the peak pulse power (3000 W vs. ≤600 W), tighter clamping (17 V vs. ≥19.9 V), and higher thermal endurance (175 °C vs. 150 °C), making it uniquely suited for primary-level industrial and automotive power rail protection.
Availability
SMC30J10CA is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive body control modules, telecom DSL line interfaces, and smart meter AC mains surge protection requiring stable component supply and long-term lifecycle support.
Supply support for SMC30J10CA 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 industrial, automotive, and consumer markets.
The SMC30J TVS series targets high-reliability surge protection in harsh environments, emphasizing high-temperature operation, low leakage, and JEDEC-standard packaging for seamless integration into automated manufacturing and mission-critical systems.
FAQ
What is the difference between SMC30J10A and SMC30J10CA?
The "A" suffix denotes unidirectional TVS behavior (anode-cathode asymmetry), while "CA" indicates bidirectional operation - meaning SMC30J10CA clamps identically in both polarities and is used across floating or AC-coupled lines like CAN bus or telecom pairs. Electrical parameters (VRWM, VBR, VCL) are matched, but circuit placement and grounding strategy differ.
Does SMC30J10CA require a heatsink for 3000 W surge handling?
No heatsink is required for single-event 3000 W (10/1000 μs) surges because energy dissipation is brief (millisecond-scale) and thermal mass of the die and copper pads suffices. However, PCB layout must follow ST's recommended 5.11 × 8.19 mm footprint with ≥1 cm² copper per pad to maintain Zth(j-a) ≤100 °C/W and avoid localized overheating.
Can SMC30J10CA be used in parallel for higher surge current handling?
Parallel use is not recommended due to mismatch in dynamic resistance (7.78 mΩ typical) and VBR tolerance (±5%), which causes uneven current sharing and potential thermal runaway. For higher current, select a higher-rated part like SMC30J12CA or implement staged protection with upstream MOVs and downstream TVS.
Is SMC30J10CA compliant with AEC-Q200 for automotive use?
SMC30J10CA is not AEC-Q200 qualified; it meets industrial-grade reliability standards (JESD22-B102 E3, MSL level 1, 175 °C Tj max) and automotive-relevant ESD/surge specs (IEC 61000-4-2 ±30 kV, IEC 61000-4-4 Level 4), but lacks the full stress-test sequence required for AEC-Q200. For qualified automotive designs, consider ST's Automotive Grade TVS portfolio (e.g., SMAJ10CA-Q).
SMC30J10CA 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 176A
- 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
SMC30J10CA FAQ
1.How can I place an order for SMC30J10CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J10CA 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 SMC30J10CA reliable?
The price and inventory of SMC30J10CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J10CA is usually 5 days.
3.What payment methods are accepted for SMC30J10CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J10CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J10CA?
SMC30J10CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J10CA 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 SMC30J10CA?
For technical support, including SMC30J10CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J10CA requirements.
6.How does Aetrix verify that SMC30J10CA is sourced from the original manufacturer or authorized distributors?
All SMC30J10CA 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 SMC30J10CA meets industry standards.
7.What is the process for return or replacement of SMC30J10CA?
All SMC30J10CA units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J10CA, 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 SMC30J10CA part is unused and in its original packaging.
Return procedure for SMC30J10CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC30J10CA Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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