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STMicroelectronics SMC30J6.0A
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- Part No.:
- SMC30J6.0A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J6.0A.pdf
- Description:
- TVS DIODE 6VWM 10.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,490
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Product details
Overview
SMC30J6.0A 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 10.3 V (max) under 291 A surge current, and operates up to 175 °C junction temperature - enabling robust protection in automotive body electronics, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the SMC30J6.0A datasheet, SMC30J6.0A pinout, SMC30J6.0A application, or SMC30J6.0A equivalent, key selection criteria include its 6.0 V standoff voltage, low 0.2 µA leakage at 25 °C, JEDEC-registered SMC package compatibility, and IEC 61000-4-2 ±30 kV contact discharge compliance - all critical for high-reliability overvoltage hardening.
Technical Context
This planar-junction TVS diode uses silicon avalanche technology to provide fast response (<1 ns) to electrostatic discharge and repetitive surges. Its unidirectional configuration supports anode-to-cathode forward conduction during overvoltage events while blocking reverse current below 6.0 V.
The device's thermal design accommodates continuous operation at Tj = 175 °C, with dynamic resistance of 4.62 mΩ (25 °C) and temperature coefficient αT = 4.53 × 10−4/°C for VBR, ensuring stable clamping performance across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 6.0 V - Maximum continuous reverse working voltage before significant leakage begins; sets minimum system rail margin. |
| Breakdown Voltage (VBR) | 6.7–7.4 V @ 10 mA - Guaranteed avalanche initiation range; defines precise overvoltage detection threshold. |
| Clamping Voltage (VCL) | 10.3 V @ 291 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| Peak Pulse Power (PPP) | 3000 W (10/1000 μs) - Sustained energy-handling capability for standard lightning/surge waveforms per IEC 61000-4-4. |
| Leakage Current (IR) | 0.2 µA @ 6.0 V, 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 engine compartments, motor drives, and outdoor base stations without derating. |
| ESD Rating | ±30 kV contact discharge (IEC 61000-4-2) - Exceeds Level 4 immunity; eliminates need for secondary ESD stages in front-end interfaces. |
Pinout & Package
SMC30J6.0A is housed in a JEDEC-standard SMC (DO-214AB) surface-mount package with matte tin-plated leads, optimized for automated assembly and high thermal dissipation on FR4 PCBs. The package measures 7.75–8.15 mm × 5.55–6.25 mm × 2.45 mm max height and supports IPC-7531 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Surge return path | Connected to ground or low-impedance reference; completes clamping loop during positive transients. |
| Cathode (K) | Protected line connection | Placed in series with input rail or signal line; conducts avalanche current when VK–A exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated for continuous use at Tj = 175 °C - eliminates thermal derating in enclosed enclosures and high-power density designs. |
| Low dynamic resistance | 4.62 mΩ at 25 °C - minimizes clamping voltage rise under high-current surges, improving protection margin for downstream ICs. |
| Ultra-low leakage | 0.2 µA @ VRWM - prevents false triggering and preserves accuracy in precision analog front-ends and battery-monitoring circuits. |
| JEDEC-compliant SMC package | Standardized mechanical outline and thermal profile - ensures drop-in replacement and consistent reflow yield across production lines. |
| IEC 61000-4-2 Level 4+ compliance | ±30 kV air/contact discharge - exceeds industrial immunity requirements without external shielding or filtering components. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects 12 V supply rail and LIN bus interface against load dump and ESD events during vehicle assembly and service. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point; responds within <1 ns to suppress transients before reaching MCU or transceiver. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies and LIN transceivers rated only to ±2 kV HBM. |
Use Scenario: Shields 24 V digital input channel from field-wiring induced surges and operator ESD during panel maintenance. IC Role / Device Role / Timing Role: First-line transient suppressor on terminal block side of optocoupler input stage; limits voltage to ≤10.3 V during 1 kV/500 A surge. Use Value: Eliminates need for discrete RC snubbers and extends optocoupler lifetime by reducing stress on internal LED and photodiode junctions. |
| Telecom Power Supply Front-End | Smart Meter AC/DC Converter Input |
Use Scenario: Guards 48 V DC input of PoE-powered switch against lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input fuse and bulk capacitor; clamps common-mode transients coupled onto DC bus. Use Value: Maintains 3000 W surge rating while adding <0.5 mm² PCB area - enabling compact, UL-certified 48 V input stages. |
Use Scenario: Secures rectified AC input (≈320 V DC) of meter's SMPS against neutral-ground surges and grid switching transients. IC Role / Device Role / Timing Role: Secondary surge limiter downstream of MOV; handles fast-rising, low-energy spikes missed by slower thermal protectors. Use Value: Reduces failure rate of primary-side MOSFETs and gate drivers by limiting VDS overshoot to <10 % above rated voltage during 10/1000 μs events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0A (STMicroelectronics) | Lower PPP = 600 W; same VRWM, VBR, and SMC-compatible SMB package. | Targeted at lower-energy signal-line protection; insufficient for 12 V rail-level surge standards like ISO 7637-2 Pulse 5a. | Select when space-constrained layouts require smaller footprint and surge threat is limited to ESD-only environments. |
| 1.5KE6.0A (ON Semiconductor) | Higher VCL = 10.5 V @ 287 A; axial DO-201 package; 1500 W PPP; no MSL-1 rating. | Designed for through-hole prototyping and legacy industrial equipment; incompatible with automated SMT assembly. | Choose only for manual repair scenarios or where board-level rework flexibility outweighs production efficiency and thermal performance. |
Compared with SMBJ6.0A and 1.5KE6.0A, SMC30J6.0A uniquely balances 3000 W surge capacity, SMT manufacturability, and 175 °C operation - making it the only option qualified for high-volume automotive and industrial power-rail protection where reliability, thermal headroom, and assembly scalability are jointly required.
Availability
SMC30J6.0A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and telecom power supplies requiring stable component supply, long-term lifecycle support, and full traceability from wafer to shipment.
Supply support for SMC30J6.0A 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 automotive, industrial, and power management solutions with vertical manufacturing and broad IP portfolio.
SMC30J6.0A belongs to ST's high-power TVS diode family engineered specifically for robust front-end surge protection in harsh-environment electronics - emphasizing thermal resilience, standardized packaging, and compliance with international immunity standards.
FAQ
What is the maximum clamping voltage of SMC30J6.0A under a 10/1000 μs surge?
The maximum clamping voltage (VCL) is 10.3 V when subjected to a 291 A peak pulse current with a 10/1000 μs waveform, measured at Tj = 25 °C. This value increases with junction temperature at a coefficient of 4.62 mΩ/°C, reaching approximately 11.2 V at 125 °C per datasheet Figure 5 and Table 2.
Can SMC30J6.0A be used in bidirectional signal line protection?
No - SMC30J6.0A is a unidirectional TVS diode intended for DC rail protection where polarity is fixed. For bidirectional signal lines such as USB or RS-485, ST recommends the pin-compatible SMC30J6.0CA variant, which provides symmetrical clamping in both polarities and identical electrical ratings except for reversed polarity behavior.
Does SMC30J6.0A meet lead-free soldering requirements?
Yes - it features matte tin-plated leads and complies with J-STD-020 MSL Level 1, supporting peak reflow temperatures up to 260 °C for 10 seconds. The recommended ST ECOPACK reflow profile specifies a 240–245 °C liquidus zone with ≤3 °C/s ramp rates, fully compatible with standard lead-free PCB assembly processes.
How does SMC30J6.0A compare to MOV-based protection in 12 V automotive systems?
Unlike metal-oxide varistors, SMC30J6.0A offers faster response (<1 ns vs. ~25 ns), no capacitance-induced signal distortion, and no degradation after repeated surges. Its precise 6.0 V standoff avoids false triggering on normal 12 V transients like cold-crank dips, while maintaining superior longevity in cyclic surge environments such as automotive test benches.
SMC30J6.0A 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):
- 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
SMC30J6.0A FAQ
1.How can I place an order for SMC30J6.0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J6.0A 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 SMC30J6.0A reliable?
The price and inventory of SMC30J6.0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J6.0A is usually 5 days.
3.What payment methods are accepted for SMC30J6.0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J6.0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J6.0A?
SMC30J6.0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J6.0A 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 SMC30J6.0A?
For technical support, including SMC30J6.0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J6.0A requirements.
6.How does Aetrix verify that SMC30J6.0A is sourced from the original manufacturer or authorized distributors?
All SMC30J6.0A 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 SMC30J6.0A meets industry standards.
7.What is the process for return or replacement of SMC30J6.0A?
All SMC30J6.0A units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J6.0A, 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 SMC30J6.0A part is unused and in its original packaging.
Return procedure for SMC30J6.0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC30J6.0A Tags
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