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Vishay General Semiconductor - Diodes Division SMCJ58AHM3/I
- Part No.:
- SMCJ58AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58AHM3/I.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,812
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Product details
Overview
SMCJ58AHM3/I 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 range (VBR at 1 mA), 93.6 V clamping voltage (VC) at 16 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the SMCJ58AHM3/I datasheet, SMCJ58AHM3/I pinout, SMCJ58AHM3/I application, or SMCJ58AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, low incremental surge resistance, and verified clamping performance under repetitive surge stress per IEC 61000-4-5.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream circuitry while holding voltage across protected nodes ≤93.6 V. Its glass-passivated junction ensures stable leakage (<1 µA at 58 V) and fast response (<1 ns), critical for safeguarding MOSFET gates and microcontroller I/O pins against ESD and inductive switching transients.
The SMCJ58AHM3/I is rated for continuous operation from −55 °C to +150 °C junction temperature, with thermal resistance RθJA = 75 °C/W (on recommended 8 mm × 8 mm copper pads) and RθJL = 15 °C/W - enabling reliable thermal management in high-density automotive PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected line's nominal DC rail. |
| VBR (min/max) | 64.4 V / 71.2 V at 1 mA - guaranteed avalanche initiation window; ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 93.6 V at 16 A - clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by protected ICs. |
| PPPM | 1500 W - peak pulse power handling capability; supports Level 4 IEC 61000-4-5 (4 kV/2 Ω) surge immunity testing. |
| IPPM | 16 A - peak surge current corresponding to VC; determines minimum trace width and fuse coordination. |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive environments without derating. |
| Package | SMC (DO-214AB) - surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with standard SMT reflow profiles (MSL Level 1). |
Pinout & Package
SMCJ58AHM3/I uses the standard SMC (DO-214AB) package: a 2-terminal surface-mount device with cathode marked by a band on one end. The package has matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path; completes shunt path for transient energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and supports lead-free reflow assembly without compromising reliability. |
| 1500 W peak pulse power | Withstands repeated 4 kV IEC 61000-4-5 surges without degradation when mounted per recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during fast transients, protecting 60 V-rated MOSFETs and CAN transceivers. |
| Fast response time (<1 ns) | Clamps before sensitive logic or analog circuits experience damaging voltage excursions. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed MCU power inputs in body control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VIN and GND, clamping surges within 1 ns to prevent brownout or latch-up. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump up to 60 V/350 ms) while maintaining <1 µA leakage at nominal voltage. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers from field wiring-induced transients. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used with series resistor) limits voltage excursion on analog front-end op-amps and ADC reference rails. Use Value: Clamps induced spikes to ≤93.6 V without affecting loop accuracy, preserving 16-bit measurement integrity under IEC 61000-4-4 EFT stress. |
| Telecom DC Power Input | Motor Drive Gate Driver Protection |
Use Scenario: Securing −48 V DC input stages of base station power supplies against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of DC/DC converters and hot-swap controllers to absorb bulk surge energy. Use Value: Handles 1500 W peak pulses with <0.1 % parameter shift after 1000 surges, ensuring long-term field reliability. | Use Scenario: Shielding high-side gate drivers in BLDC inverters from Miller-induced voltage spikes during MOSFET switching. IC Role / Device Role / Timing Role: Localized TVS across gate-source terminals to clamp dv/dt-induced overshoot and prevent false turn-on. Use Value: Low VC/VBR ratio prevents gate oxide stress while supporting >1 MHz PWM frequencies without parasitic oscillation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58AHE3/A | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 110 °C/W), same VWM/VC specs. | Suitable for space-constrained consumer electronics but not automotive under-hood due to thermal limits. | Select when board area is critical and surge levels are ≤2 kV IEC 61000-4-5. |
| 1.5KE56A | Through-hole DO-201 package, higher VC (93.6 V → 96.0 V), identical VWM/PPPM, no AEC-Q101 qualification. | Used in legacy industrial power supplies where manual assembly and lower cost outweigh automotive qualification needs. | Choose for cost-sensitive, non-automotive designs requiring proven field history and through-hole mounting. |
Compared with SMBJ58AHE3/A and 1.5KE56A, the SMCJ58AHM3/I delivers superior thermal performance (RθJA = 75 °C/W vs. 110/150 °C/W), AEC-Q101 validation, and halogen-free compliance - making it the preferred choice for new automotive and high-reliability industrial designs requiring long-term supply continuity and regulatory alignment.
Availability
SMCJ58AHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply, long lifecycle support, and full traceability.
Supply support for SMCJ58AHM3/I 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure tolerance, thermal resilience, and regulatory compliance are non-negotiable.
FAQ
What is the clamping voltage of the SMCJ58AHM3/I and how is it measured?
The SMCJ58AHM3/I has a maximum clamping voltage (VC) of 93.6 V, measured at a peak pulse current (IPPM) of 16 A using a standardized 10/1000 µs double-exponential waveform. This value reflects the actual voltage imposed on protected circuitry during worst-case surge events and is validated per JEDEC and IEC test methods. The SMCJ58AHM3/I maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C) when mounted per Vishay's recommended 8 mm × 8 mm copper pad layout.
Is the SMCJ58AHM3/I qualified for automotive applications?
Yes, the SMCJ58AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant construction with full automotive-grade stress testing (including temperature cycling, humidity bias HAST, and surge endurance). It is approved for use in engine control units, ADAS sensor modules, and infotainment power supplies where reliability under vibration, thermal shock, and electrical transients is mandatory. The SMCJ58AHM3/I data sheet explicitly references AEC-Q101 compliance in its mechanical data section.
How does the SMCJ58AHM3/I differ from the SMCJ58A-E3/57T variant?
The SMCJ58AHM3/I differs from SMCJ58A-E3/57T in three key aspects: (1) HM3 denotes halogen-free and AEC-Q101 qualification, whereas E3 is commercial-grade only; (2) the "I" suffix indicates 3500-unit 13-inch tape-and-reel packaging versus "57T" (850-unit 7-inch reel); (3) HM3 parts undergo additional automotive screening including extended temperature life testing and whisker resistance per JESD 201 Class 2. Both share identical electrical specs, but SMCJ58AHM3/I is designated for automotive production programs.
What is the thermal resistance of the SMCJ58AHM3/I and how does it affect PCB layout?
The SMCJ58AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on Vishay's recommended minimum pad layout: 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes natural convection and no internal layer copper; adding thermal vias or inner-layer copper pours can reduce RθJA by 15–25 %. For sustained surge duty cycles, designers must ensure average power dissipation stays below 6.5 W and junction temperature remains ≤150 °C - requiring careful thermal analysis in high-density automotive PCBs.
Can the SMCJ58AHM3/I be used in bidirectional configurations?
No, the SMCJ58AHM3/I is a unidirectional TVS diode - identified by the "A" (not "CA") suffix and cathode band marking. Bidirectional operation requires the CA variant (e.g., SMCJ58CA), which has symmetrical breakdown in both polarities. Using SMCJ58AHM3/I in reverse-biased AC applications would result in forward conduction and potential failure. For bidirectional protection, select SMCJ58CAHM3/I or pair two unidirectional devices in series opposition - though the latter increases footprint and reduces effective clamping speed.
SMCJ58AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ58AHM3/I FAQ
1.How can I place an order for SMCJ58AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58AHM3/I 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 SMCJ58AHM3/I reliable?
The price and inventory of SMCJ58AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ58AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58AHM3/I?
SMCJ58AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58AHM3/I 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 SMCJ58AHM3/I?
For technical support, including SMCJ58AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58AHM3/I requirements.
6.How does Aetrix verify that SMCJ58AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ58AHM3/I 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 SMCJ58AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ58AHM3/I?
All SMCJ58AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58AHM3/I, 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 SMCJ58AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ58AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ58AHM3/I Tags
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