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Vishay General Semiconductor - Diodes Division SMCJ58CA-M3/9AT
- Part No.:
- SMCJ58CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58CA-M3/9AT.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,671
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Product details
Overview
SMCJ58CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 58 V standoff voltage (VWM), 64.4–71.2 V breakdown voltage (VBR), 93.6 V clamping voltage (VC) at 16.0 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ58CA-M3/9AT datasheet, SMCJ58CA-M3/9AT pinout, SMCJ58CA-M3/9AT application, or SMCJ58CA-M3/9AT equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, and halogen-free RoHS-compliant construction per M3 suffix - critical for automotive-grade ESD/surge resilience validation.
Technical Context
The SMCJ58CA-M3/9AT implements a glass-passivated silicon avalanche junction optimized for fast response (<1 ps) to transient events such as ISO 7637-2 load dump or IEC 61000-4-5 surge pulses. Its symmetrical bidirectional structure enables identical clamping in both polarities without polarity marking, supporting AC-coupled interfaces and differential bus protection.
Thermally, it sustains operation from –55 °C to +150 °C junction temperature, with RθJL = 15 °C/W enabling effective heat transfer to PCB copper pads (8.0 mm × 8.0 mm recommended). The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC working range on protected line |
| VBR min/max | 64.4 V / 71.2 V at IT = 1.0 mA - guaranteed avalanche onset window; ensures predictable turn-on across temperature and unit variation |
| VC @ IPPM | 93.6 V at 16.0 A (10/1000 µs) - peak clamped voltage seen by downstream circuitry during worst-case surge |
| PPPM | 1500 W - peak transient energy absorption capacity; determines survivability against high-energy transients like lightning-induced surges |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on standard PCB layout; used to calculate max allowable power dissipation at given ambient temp |
| TJ max | +150 °C - absolute maximum junction temperature; sets upper limit for thermal design margin in enclosed or high-ambient environments |
| Package | SMC (DO-214AB) - surface-mount outline with 8.13 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow |
Pinout & Package
SMCJ58CA-M3/9AT uses the SMC (DO-214AB) package: a two-terminal, non-polarized surface-mount case with matte tin-plated leads solderable per J-STD-002. Bidirectional construction means no cathode/anode marking; terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous polarity; no fixed polarity assignment |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected node pair |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded power domains without polarity concerns |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge events on 24 V industrial control lines when properly laid out |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and EU industrial equipment without compromising surge performance |
| AEC-Q101 qualified option | Available in HM3 variant for automotive applications requiring validated reliability under temperature cycling, humidity, and mechanical stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD), reducing risk of latch-up or gate oxide damage in MOSFETs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units (ECUs) and body control modules (BCMs) against ISO 7637-2 pulse 1, 2a, 3a/b, and load dump. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers to limit rail excursions below IC absolute maximum ratings. Use Value: Clamps 12 V system transients to ≤93.6 V, preventing damage to 3.3 V/5 V logic and analog front-ends while maintaining AEC-Q101 qualification. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) and digital sensor lines (e.g., CAN, LIN) in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs or between signal and ground to shunt ESD and inductive switching noise. Use Value: Symmetric clamping ensures equal protection for positive/negative transients on floating or AC-coupled sensor interfaces without polarity misalignment risk. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Front-end surge suppression on PoE-powered Ethernet ports (IEEE 802.3af/at) and base station RF module power feeds exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protector on 48 V DC input rails, coordinated with GDT or MOV secondary stages to handle multi-kA events. Use Value: 1500 W PPPM rating supports coordination with upstream gas discharge tubes to meet IEC 61000-4-5 10/700 µs waveform requirements up to 6 kV. | Use Scenario: Secondary-side overvoltage protection on 5–24 V DC outputs of wall adapters and USB-C PD power supplies subjected to output short-circuit recovery spikes. IC Role / Device Role / Timing Role: Fast-response clamp limiting output rail overshoot during regulator fault conditions or capacitive load disconnection. Use Value: Sub-100 ns response time prevents >93.6 V excursion from damaging connected smartphones, tablets, or IoT peripherals during abnormal regulation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA-E3/61T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), same VWM/VBR/VC | Not suitable for 1500 W surge events; limited to low-energy ESD or board-level coupling transients | Select only when space-constrained and surge threat level is ≤IEC 61000-4-2 Level 4 contact discharge |
| SMCJ58A-M3/9AT | Unidirectional version; includes cathode band marking; identical VWM/VBR/VC/PPPM but asymmetric conduction | Requires correct polarity placement; unsuitable for AC or floating signal lines without additional circuitry | Choose only for DC-biased rails where polarity is fixed and reverse leakage must be minimized |
Compared with SMAJ58CA-E3/61T and SMCJ58A-M3/9AT, the SMCJ58CA-M3/9AT uniquely combines 1500 W surge handling, bidirectional symmetry, and halogen-free construction - making it the preferred choice for automotive and industrial systems demanding full-spectrum transient immunity without polarity constraints.
Availability
SMCJ58CA-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, telecom power interfaces, and consumer adapter safety-critical applications requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ58CA-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 optimization.
The SMCJ series was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through proven, standardized, and qualified components.
FAQ
What is the clamping voltage of the SMCJ58CA-M3/9AT under a 10/1000 µs surge?
The SMCJ58CA-M3/9AT has a maximum clamping voltage (VC) of 93.6 V at 16.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the highest voltage that will appear across the SMCJ58CA-M3/9AT during a standardized surge event - critical for ensuring downstream ICs remain within their absolute maximum voltage ratings.
Is the SMCJ58CA-M3/9AT suitable for automotive applications?
Yes, the SMCJ58CA-M3/9AT is halogen-free and RoHS-compliant per its M3 suffix, and an AEC-Q101 qualified version (HM3) is available. While the base SMCJ58CA-M3/9AT itself is commercial-grade, its construction - including glass-passivated junction, MSL Level 1 rating, and 150 °C TJ max - aligns with automotive under-hood and infotainment system requirements when used with appropriate derating and layout.
How does the bidirectional design of the SMCJ58CA-M3/9AT affect PCB layout?
The SMCJ58CA-M3/9AT has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. This simplifies PCB layout for AC-coupled lines, differential buses (e.g., RS-485), or ungrounded power domains - unlike unidirectional variants such as SMCJ58A-M3/9AT, which require strict cathode alignment per schematic polarity.
What is the thermal resistance of the SMCJ58CA-M3/9AT, and how does it impact power handling?
The SMCJ58CA-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value directly limits continuous power dissipation: at 25 °C ambient, its 6.5 W rated power corresponds to ~488 °C junction rise - confirming it is intended for transient, not steady-state, operation. For repeated surges, thermal mass and PCB copper area become critical design factors.
Can the SMCJ58CA-M3/9AT replace the SMCJ58A-M3/9AT in an existing design?
No direct replacement is assured: the SMCJ58CA-M3/9AT is bidirectional while the SMCJ58A-M3/9AT is unidirectional with a cathode band. Swapping them requires verifying that the protected circuit has no DC bias or polarity-sensitive behavior - e.g., replacing SMCJ58A-M3/9AT on a DC rail may cause unintended conduction. Layout review and transient simulation are required before substitution of the SMCJ58CA-M3/9AT.
SMCJ58CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ58CA-M3/9AT FAQ
1.How can I place an order for SMCJ58CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58CA-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 SMCJ58CA-M3/9AT reliable?
The price and inventory of SMCJ58CA-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 SMCJ58CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ58CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58CA-M3/9AT?
SMCJ58CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58CA-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 SMCJ58CA-M3/9AT?
For technical support, including SMCJ58CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ58CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ58CA-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 SMCJ58CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ58CA-M3/9AT?
All SMCJ58CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58CA-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 SMCJ58CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ58CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ58CA-M3/9AT Tags
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