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STMicroelectronics SMC30J6.5A
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- Part No.:
- SMC30J6.5A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J6.5A.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,495
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC30J6.5A from STMicroelectronics is a unidirectional transient voltage suppression (TVS) diode designed for primary-level ESD and surge protection in DC power rails and signal lines. It delivers 3000 W peak pulse power (10/1000 µs), clamps at 11.2 V (max) under 268 A surge current, and operates up to 175 °C junction temperature-ideal for industrial power supplies and automotive body control modules requiring robust overvoltage immunity.
For engineers reviewing the SMC30J6.5A datasheet, SMC30J6.5A pinout, SMC30J6.5A application, or SMC30J6.5A equivalent, key selection criteria include its 6.5 V standoff voltage, low 0.2 µA leakage at 25 °C, JEDEC-registered SMC package compatibility, and IEC 61000-4-2 ±30 kV contact/air discharge compliance-critical for high-reliability board-level protection design.
Technical Context
The SMC30J6.5A employs planar silicon avalanche technology to achieve precise breakdown at 7.2–7.9 V (VBR) with dynamic resistance of 4.77 mΩ, enabling fast response (<1 ns) to ESD transients and controlled clamping behavior. Its thermal design supports continuous operation at Tj = 175 °C, validated per JESD22-A103 and MIL-STD-750 Method 2026.
It meets IEC 61000-4-4 Level 4 (4 kV), exceeds IEC 61000-4-2 Level 4 (±30 kV), and complies with UL94 V0 flammability and J-STD-020 MSL Level 1-ensuring suitability for reflow-soldered, high-density PCBs in harsh environments without derating concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 6.5 V - Maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 7.2–7.9 V @ 10 mA - Precise avalanche onset ensures predictable clamping threshold |
| Clamping Voltage (VCL) | 11.2 V @ 268 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 inputs |
| Leakage Current (IR) | 0.2 µA @ 6.5 V, 25 °C - Minimizes standby power loss in battery-backed or low-power systems |
| Junction Temperature Range | −55 to +175 °C - Enables deployment in under-hood automotive or high-ambient industrial enclosures |
| ESD Withstand | ±30 kV (IEC 61000-4-2, contact & air) - Exceeds Level 4 for direct human interaction points |
Pinout & Package
The SMC30J6.5A uses the JEDEC-registered 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, IPC7531-compliant footprint, and MSL Level 1 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Surge current sink | Connected to protected line; conducts avalanche current to ground during overvoltage |
| Anode | Reference node | Typically tied to system ground or lower-potential rail; completes conduction path during transient |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic resistance | 4.77 mΩ - Reduces clamping voltage rise under high di/dt surges, improving protection margin |
| High-temperature operation | 175 °C max Tj - Eliminates thermal derating in enclosed power converters or engine-control units |
| Ultra-low leakage | 0.2 µA @ VRM - Preserves signal integrity and battery life in always-on sensor interfaces |
| JEDEC-registered SMC outline | Standardized mechanical dimensions - Ensures automated placement accuracy and solder joint reliability |
| UL94 V0 flammability | Self-extinguishing epoxy housing - Meets safety requirements for mains-connected equipment |
Applications
| Industrial SMPS Input Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 12 V DC input stage of switch-mode power supplies against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp surges within 1 ns. Use Value: Maintains 11.2 V clamping limit at 268 A, preventing MOSFET gate oxide failure and ensuring >100,000 surge cycles per IEC 61000-4-5. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from ESD in door module assemblies. IC Role / Device Role / Timing Role: Localized TVS on each LIN line and power rail, leveraging low leakage to avoid bus contention. Use Value: Withstands ±30 kV contact discharge per IEC 61000-4-2 while adding <0.5 pF capacitance-no signal integrity impact on 20 kbps LIN timing. |
| Telecom PoE PSE Interface | Medical Patient Monitoring Port |
Use Scenario: Secondary-side surge protection on 48 V Power over Ethernet (PoE) data lines compliant with IEEE 802.3af/at. IC Role / Device Role / Timing Role: Unidirectional TVS on each twisted pair, coordinated with primary-side isolation barriers. Use Value: Delivers 3000 W pulse handling without thermal runaway at 175 °C ambient-validated for continuous operation in sealed PoE switches. | Use Scenario: ESD protection for USB and analog sensor ports on portable patient monitors exposed to clinical handling. IC Role / Device Role / Timing Role: Low-leakage TVS on USB D+/D− and analog front-end inputs to preserve signal fidelity. Use Value: 0.2 µA leakage prevents baseline drift in microvolt-level ECG amplifiers; ±30 kV ESD rating meets IEC 60601-1-2 4th edition requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A | Lower peak power (600 W), larger SMB package (8.2 mm × 6.2 mm vs. SMC's 8.15 mm × 6.25 mm), same VRM/VBR | Not suitable for 3000 W surge environments; limited to low-energy signal lines | Select only if board space allows larger footprint and surge energy is ≤600 W |
| 1.5KE6.8A | Through-hole DO-201 package, higher leakage (5 µA), slower response due to parasitic inductance | Incompatible with automated SMT assembly; unsuitable for high-frequency ESD (e.g., USB 2.0) | Use only for legacy through-hole designs where rework tolerance outweighs performance trade-offs |
Compared with SMBJ6.5A and 1.5KE6.8A, the SMC30J6.5A uniquely combines 3000 W capability, SMT scalability, and sub-microamp leakage-making it the sole choice for next-generation industrial and automotive DC rail protection where space, reliability, and surge margin are co-constrained.
Availability
SMC30J6.5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom PoE interfaces, and medical monitoring ports requiring stable component supply across extended product lifecycles.
Supply support for SMC30J6.5A 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 intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.
The SMC30J series belongs to ST's high-power TVS portfolio, engineered specifically for robust board-level protection in high-temperature, high-surge environments-emphasizing reliability over 15+ years in automotive and industrial deployments.
FAQ
What is the maximum clamping voltage of SMC30J6.5A under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 11.2 V at 268 A peak pulse current for a 10/1000 µs waveform, measured at Tj = 25 °C. This value increases linearly with junction temperature per αT = 4.77 × 10−4/°C, reaching ~12.1 V at 125 °C per datasheet Equation 2.
Is SMC30J6.5A compatible with lead-free reflow soldering processes?
Yes-SMC30J6.5A is qualified for lead-free reflow per J-STD-020 MSL Level 1, with a peak profile of 240–245 °C for ≤30 seconds. Its matte tin plating and epoxy body withstand thermal cycling without delamination or parameter shift, verified per JEDEC JESD22-A103.
How does the unidirectional configuration affect circuit placement?
The unidirectional SMC30J6.5A must be oriented with its cathode (marked band) toward the protected line and anode to ground. This configuration blocks reverse leakage during normal operation but conducts only during positive surges-requiring separate protection for negative transients unless paired with a bidirectional device or complementary design.
Can SMC30J6.5A replace SMCJ6.5A in existing designs?
No-SMC30J6.5A has 3000 W peak power and lower dynamic resistance (4.77 mΩ) versus SMCJ6.5A's 1500 W and ~10 mΩ. Direct substitution may cause overstress in circuits relying on SMCJ6.5A's higher clamping voltage; layout review and surge testing are required before replacement.
SMC30J6.5A 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.2V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 268A
- 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
SMC30J6.5A FAQ
1.How can I place an order for SMC30J6.5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J6.5A 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 SMC30J6.5A reliable?
The price and inventory of SMC30J6.5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J6.5A is usually 5 days.
3.What payment methods are accepted for SMC30J6.5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J6.5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J6.5A?
SMC30J6.5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J6.5A 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 SMC30J6.5A?
For technical support, including SMC30J6.5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J6.5A requirements.
6.How does Aetrix verify that SMC30J6.5A is sourced from the original manufacturer or authorized distributors?
All SMC30J6.5A 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 SMC30J6.5A meets industry standards.
7.What is the process for return or replacement of SMC30J6.5A?
All SMC30J6.5A units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J6.5A, 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 SMC30J6.5A part is unused and in its original packaging.
Return procedure for SMC30J6.5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC30J6.5A Tags
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