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STMicroelectronics SMC30J5.0A
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- Part No.:
- SMC30J5.0A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC30J5.0A.pdf
- Description:
- TVS DIODE 5VWM 9.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,743
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Product details
Overview
SMC30J5.0A from STMicroelectronics is a unidirectional 5.0 V standoff voltage transient voltage suppressor (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 9.2 V @ 327 A, and maintains ≤0.2 µA leakage at 25 °C - enabling robust protection in high-reliability SMPS, industrial I/O, and automotive body electronics.
For engineers reviewing the SMC30J5.0A datasheet, SMC30J5.0A pinout, SMC30J5.0A application, or SMC30J5.0A equivalent, key selection criteria include its 5.0 V VRM rating, low dynamic resistance (4.53 mΩ), 175 °C junction temperature capability, and JEDEC-registered SMC package compatibility with IPC7531 footprints.
Technical Context
This planar-junction TVS diode operates as a clamping device triggered by overvoltage events exceeding its 5.0 V reverse standoff voltage (VRM). Its breakdown voltage (VBR) is specified at 6.4–7.1 V (min–max) with 10 mA test current, ensuring precise turn-on behavior before downstream circuit damage occurs.
The device supports bidirectional variants (e.g., SMC30J5.0CA) but SMC30J5.0A is strictly unidirectional, with forward conduction only during positive transients on the anode. Its thermal design accommodates 175 °C maximum junction temperature and complies with IEC 61000-4-2 (±30 kV contact/air discharge) and IEC 61000-4-4 level 4 (4 kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 5.0 V - Maximum continuous reverse operating voltage before significant leakage begins. |
| Breakdown Voltage (VBR) | 6.4–7.1 V @ 10 mA - Confirmed turn-on threshold ensuring early clamping without false triggering. |
| Clamping Voltage (VCL) | 9.2 V @ 327 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge. |
| Peak Pulse Power (PPP) | 3000 W (10/1000 μs) - Sustains high-energy transients common in industrial power supply inputs. |
| Leakage Current (IRM) | ≤0.2 µA @ VRM, 25 °C - Minimizes standby power loss and avoids interference in low-current sensor circuits. |
| Junction Temperature (Tj) | −55 to +175 °C - Enables deployment in under-hood automotive or high-ambient industrial environments. |
| Dynamic Resistance (RD) | 4.53 mΩ - Low impedance during clamping reduces VCL rise under high di/dt surges. |
Pinout & Package
SMC30J5.0A 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, MSL Level 1, compatible with standard reflow profiles per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Current entry point during forward conduction | Connected to ground or low-side return path; defines unidirectional polarity. |
| Cathode (K) | Current exit point during reverse clamping | Connected to protected line (e.g., 5 V rail); carries full surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV air/contact discharge - exceeds Level 4, eliminating need for external ESD staging in USB/UART interfaces. |
| Low clamping ratio (VCL/VBR) | ~1.45 (9.2 V / 6.4 V) - tight voltage margin preserves headroom for 5 V logic ICs during surge events. |
| High-temperature reliability | Rated to 175 °C Tj - supports placement near power MOSFETs or transformers without derating. |
| Planar junction construction | Enables stable leakage and repeatable VBR across temperature - critical for precision analog front-ends. |
| JEDEC-compliant footprint | IPC7531-recommended pad layout - ensures manufacturability and thermal performance on FR4 PCBs. |
Applications
| Industrial PLC Digital Input Module | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 24 V DC digital input channels against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Primary clamping element placed between field input and optocoupler/signal conditioner. Use Value: Limits transient voltage to ≤9.2 V during 327 A surges, preventing latch-up or destruction of downstream CMOS interface ICs. |
Use Scenario: Safeguarding LIN bus transceiver power pins against battery reverse connection and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional rail clamp on VCC line upstream of transceiver IC. Use Value: Withstands 175 °C ambient and clamps 4 kV IEC 61000-4-4 bursts without degradation, meeting ISO 16750-2 requirements. |
| AC-DC SMPS Secondary-Side Output Rail | USB-C Power Delivery (PD) Port Protection |
|
Use Scenario: Suppressing flyback-induced overshoot on regulated 5 V/12 V secondary outputs in offline converters. IC Role / Device Role / Timing Role: Fast-response shunt protector parallel to output capacitor. Use Value: 0.2 µA leakage avoids regulation error in precision feedback loops; 3000 W rating handles worst-case transformer ringing energy. |
Use Scenario: Guarding CC1/CC2 configuration channel pins against ESD during cable insertion and hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance (≈300 pF @ 0 V) unidirectional clamp referenced to VCONN or GND. Use Value: ±30 kV ESD immunity meets USB-IF compliance; minimal capacitance prevents signal integrity degradation at 300 kHz PD communication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A (STMicroelectronics) | Same 5.0 V VRM, but lower 600 W PPP rating and SMB package (smaller thermal mass). | Not suitable for 3000 W surge events; limited to low-energy signal-line protection. | Select only when space-constrained layouts preclude SMC and surge energy is <500 W. |
| SAC5.0 (Littelfuse) | Identical 5.0 V VRM and 3000 W rating, but higher 10.5 V clamping voltage (vs. 9.2 V) and 5.7 mΩ RD. | Higher VCL increases stress on protected 5 V ICs; less margin for logic-level tolerance. | Acceptable where board-level layout allows higher clamping, but SMC30J5.0A offers superior voltage control. |
Compared with SMBJ5.0A and SAC5.0, SMC30J5.0A provides the lowest clamping voltage (9.2 V) and dynamic resistance (4.53 mΩ) among 5 V, 3000 W TVS diodes in JEDEC-standard packages - directly improving system-level surge margin for 5 V logic and interface ICs.
Availability
SMC30J5.0A is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and power supply design requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for SMC30J5.0A 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 power management, protection devices, microcontrollers, and automotive-grade ICs.
SMC30JxxA belongs to ST's high-power TVS diode product line, engineered specifically for industrial and automotive systems demanding robust, high-temperature-stable overvoltage protection with minimal leakage and precise clamping.
FAQ
What is the maximum surge current SMC30J5.0A can handle?
SMC30J5.0A sustains 327 A peak pulse current under the standard 10/1000 μs waveform at 25 °C ambient. At elevated junction temperatures (e.g., 125 °C), its derated IPP drops to approximately 240 A due to thermal limitations - confirmed in Figure 3 of DS8598 Rev 8.
Is SMC30J5.0A RoHS and REACH compliant?
Yes. SMC30J5.0A is manufactured in ST's ECOPACK2-compliant facilities, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its matte tin lead finish and halogen-free molding compound are documented in ST's official environmental compliance reports.
Can SMC30J5.0A be used in bidirectional signal lines?
No. SMC30J5.0A is unidirectional and conducts only when cathode voltage exceeds anode by ≥VBR. For bidirectional protection (e.g., RS-485, CAN), use the pin-compatible SMC30J5.0CA variant, which features symmetrical clamping in both polarities.
How does junction temperature affect clamping voltage?
VCL increases linearly with junction temperature at 4.53 × 10⁻³ Ω/°C × IPP. For example, at 150 °C and 327 A, VCL rises by ~1.7 V above its 25 °C value (9.2 V), reaching ~10.9 V - calculated using αT = 4.53 × 10⁻³ Ω/°C from Table 2 and Equation 3 in DS8598.
SMC30J5.0A 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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 327A
- 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
SMC30J5.0A FAQ
1.How can I place an order for SMC30J5.0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC30J5.0A 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 SMC30J5.0A reliable?
The price and inventory of SMC30J5.0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC30J5.0A is usually 5 days.
3.What payment methods are accepted for SMC30J5.0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC30J5.0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC30J5.0A?
SMC30J5.0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC30J5.0A 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 SMC30J5.0A?
For technical support, including SMC30J5.0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC30J5.0A requirements.
6.How does Aetrix verify that SMC30J5.0A is sourced from the original manufacturer or authorized distributors?
All SMC30J5.0A 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 SMC30J5.0A meets industry standards.
7.What is the process for return or replacement of SMC30J5.0A?
All SMC30J5.0A units undergo pre-shipment inspection (PSI). If there is an issue with SMC30J5.0A, 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 SMC30J5.0A part is unused and in its original packaging.
Return procedure for SMC30J5.0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC30J5.0A Tags
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Diodes Incorporated
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