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Vishay General Semiconductor - Diodes Division SMCJ58A-M3/9AT
- Part No.:
- SMCJ58A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58A-M3/9AT.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,508
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Product details
Overview
SMCJ58A-M3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 58 V standoff voltage (VWM), 64.4–71.2 V breakdown voltage (VBR at 1 mA), 93.6 V maximum clamping voltage (VC) at 16.0 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMCJ58A-M3/9AT datasheet, SMCJ58A-M3/9AT pinout, SMCJ58A-M3/9AT application, or SMCJ58A-M3/9AT equivalent, this device is selected for high-energy surge immunity in automotive power modules, industrial motor drive I/O protection, and telecom DC supply rail hardening where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.4), and AEC-Q101-compliant variants are critical.
Technical Context
The SMCJ58A-M3/9AT operates as a silicon avalanche diode that enters controlled breakdown above its reverse standoff voltage, diverting transient energy to ground while limiting downstream voltage to ≤93.6 V. Its glass-passivated junction ensures stable leakage (<1 µA at 58 V) and long-term reliability under repeated surges.
Thermally, it delivers 1500 W peak pulse power with RθJA = 75 °C/W and RθJL = 15 °C/W, enabling operation up to +150 °C junction temperature. The halogen-free, RoHS-compliant M3 suffix confirms compliance with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC rail margin for 48 V systems. |
| VBR (min/max) | 64.4 V / 71.2 V at 1 mA - Confirmed avalanche onset range; ensures predictable triggering across process variation. |
| VC @ IPPM | 93.6 V at 16.0 A - Clamped voltage during 10/1000 µs surge; limits stress on protected ICs like microcontrollers or gate drivers. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing. |
| IPPM | 16.0 A - Peak surge current capability at rated clamping voltage; enables protection of medium-power circuits without derating. |
| TJ max | +150 °C - Maximum junction temperature; allows use in under-hood automotive environments and enclosed industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount package with 8.0 mm × 8.0 mm copper pad thermal footprint; supports automated placement and high-current PCB routing. |
Pinout & Package
SMCJ58A-M3/9AT uses the standard SMC (DO-214AB) surface-mount package: 2-terminal, unidirectional configuration with cathode band marking. The package measures 7.75 mm × 6.22 mm × 2.62 mm (L × W × H), features matte tin-plated leads solderable per J-STD-002, and meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground or return path | Completes conduction path during reverse-biased surge; must be routed with low-inductance trace to minimize VL = L·di/dt overshoot. |
| Cathode | High-side connection to line being protected (e.g., 48 V rail) | Marked by visible band; connects to positive rail; avalanche breakdown occurs when cathode-to-anode voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low clamping ratio | VC/VBR ≈ 1.4 - Minimizes overvoltage exposure during transients, preserving margin for 60 V-rated MOSFETs and logic ICs. |
| Fast response time | <1 ns - Enables suppression of ESD and lightning-induced spikes before sensitive components experience damage. |
| Halogen-free & RoHS-compliant (M3) | Meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 - Ensures reliability in lead-free reflow and long-term storage. |
| High surge current capability | 16.0 A IPPM with 1500 W PPPM - Supports repeated 4 kV IEC 61000-4-5 surges without degradation. |
| Glass-passivated junction | Stable leakage <1 µA at VWM - Prevents false triggering and standby power loss in battery-backed systems. |
Applications
| Automotive Power Distribution Module | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control modules against load dump and alternator ripple in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 48 V rail and chassis ground to clamp transients up to ±100 V. Use Value: Limits voltage seen by MCU power supply and CAN transceivers to ≤93.6 V, preventing latch-up and ensuring ASIL-B functional safety compliance. | Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protection device mounted directly at connector entry point, shunting surge energy before optocoupler input stage. Use Value: Withstands 16.0 A surges without failure, eliminating need for external series impedance and preserving signal integrity for 10 kHz switching inputs. |
| Telecom DC Power Supply Rail | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding primary-side DC bus (e.g., 54 V nominal) in PoE-powered network switches against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected from DC+ to ground, activated within nanoseconds to limit bus overvoltage. Use Value: 1500 W peak power rating absorbs full IEC 61000-4-5 Level 4 surge energy, avoiding shutdown or brownout during field deployment. | Use Scenario: Protecting isolated gate driver ICs (e.g., Si823x) from Miller-induced voltage spikes during IGBT turn-off in HVAC inverters. IC Role / Device Role / Timing Role: Local clamping device placed across gate-emitter terminals to suppress dv/dt-induced false turn-on. Use Value: 93.6 V clamping voltage provides sufficient margin below typical 100 V gate oxide rating, extending driver lifetime under repetitive switching stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A-M3/57T | Same electrical specs but SMB (DO-214AA) package - smaller footprint (4.6 × 3.6 mm), lower PPPM (600 W), reduced thermal mass. | Better suited for space-constrained consumer electronics; insufficient for industrial 1500 W surge requirements. | Select only if board area is critical and surge threat level is limited to IEC 61000-4-2 ESD or low-energy transients. |
| SMCJ58CA-M3/9AT | Bidirectional variant - identical VWM, VBR, VC, and PPPM, but symmetric clamping in both polarities. | Required for AC-coupled signal lines or differential buses (e.g., RS-485) where polarity reversal occurs. | Choose when protecting bidirectional interfaces; not interchangeable with SMCJ58A-M3/9AT due to different polarity behavior. |
Compared with SMBJ58A-M3/57T, SMCJ58A-M3/9AT delivers 2.5× higher surge power handling and superior thermal dissipation; compared with SMCJ58CA-M3/9AT, it offers optimized unidirectional clamping for DC rails but cannot protect AC signals without polarity inversion risk.
Availability
SMCJ58A-M3/9AT is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC digital input protection, and telecom DC power supply rail hardening requiring stable component supply, long-lifecycle support, and halogen-free compliance.
Supply support for SMCJ58A-M3/9AT 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where sustained surge immunity and AEC-Q101 qualification are mandatory design requirements.
FAQ
What is the maximum clamping voltage of the SMCJ58A-M3/9AT under a 10/1000 µs surge?
The SMCJ58A-M3/9AT has a maximum clamping voltage (VC) of 93.6 V when subjected to its rated peak pulse current of 16.0 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and confirmed in the Vishay datasheet revision 09-Jan-2024. The clamping performance ensures downstream components see no more than 93.6 V during surge events, making SMCJ58A-M3/9AT suitable for protecting 60 V-rated ICs in 48 V systems.
Is the SMCJ58A-M3/9AT RoHS-compliant and halogen-free?
Yes, the SMCJ58A-M3/9AT carries the M3 suffix, indicating it is both RoHS-compliant and halogen-free per Vishay's material categorization standard. It meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow specifications (peak 260 °C). This makes SMCJ58A-M3/9AT appropriate for environmentally regulated markets including EU automotive and industrial equipment, where halogen-free content is mandated for fire safety and recycling.
Does the SMCJ58A-M3/9AT have AEC-Q101 qualification?
No, the SMCJ58A-M3/9AT is not AEC-Q101 qualified. That qualification applies only to variants with HE3 or HM3 suffixes (e.g., SMCJ58AHE3_A/I). The M3 suffix denotes halogen-free and RoHS compliance but does not include automotive-grade stress testing. For automotive applications requiring AEC-Q101, engineers must specify SMCJ58AHE3 or SMCJ58AHM3 instead of SMCJ58A-M3/9AT.
What is the thermal resistance from junction to ambient for the SMCJ58A-M3/9AT?
Per the Vishay datasheet, the SMCJ58A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air conditions and is critical for calculating safe power derating above 25 °C ambient. The lower RθJL of 15 °C/W reflects efficient heat transfer to PCB copper, confirming SMCJ58A-M3/9AT's suitability for thermally demanding layouts.
How does the SMCJ58A-M3/9AT differ from the bidirectional SMCJ58CA-M3/9AT?
The SMCJ58A-M3/9AT is unidirectional, with polarity marked by a cathode band and clamping only in reverse bias, whereas the SMCJ58CA-M3/9AT is bidirectional - symmetric in both directions with no polarity marking. Both share identical VWM (58 V), VBR, VC, and PPPM ratings, but SMCJ58CA-M3/9AT is required for AC or differential signal protection (e.g., RS-485, CAN FD), while SMCJ58A-M3/9AT is optimal for DC rail protection. They are not interchangeable without circuit redesign.
SMCJ58A-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 16A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ58A-M3/9AT FAQ
1.How can I place an order for SMCJ58A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58A-M3/9AT 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 SMCJ58A-M3/9AT reliable?
The price and inventory of SMCJ58A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ58A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58A-M3/9AT?
SMCJ58A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58A-M3/9AT 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 SMCJ58A-M3/9AT?
For technical support, including SMCJ58A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ58A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ58A-M3/9AT 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 SMCJ58A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ58A-M3/9AT?
All SMCJ58A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58A-M3/9AT, 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 SMCJ58A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ58A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ58A-M3/9AT Tags
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