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Vishay General Semiconductor - Diodes Division SMCJ58HE3/9AT
- Part No.:
- SMCJ58HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58HE3/9AT.pdf
- Description:
- TVS DIODE 58VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,811
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Product details
Overview
SMCJ58HE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) 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), 1500 W peak pulse power (10/1000 µs), clamping voltage of 93.6 V at 16.0 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ58HE3/9AT datasheet, SMCJ58HE3/9AT pinout, SMCJ58HE3/9AT application, or SMCJ58HE3/9AT equivalent, this device is selected for high-energy surge immunity in automotive power modules, industrial sensor interfaces, and DC-DC converter input stages where low clamping ratio, fast response (<1 ns), and stable junction temperature up to +150 °C are critical.
Technical Context
The SMCJ58HE3/9AT operates as a unidirectional avalanche diode, leveraging glass-passivated silicon junction technology to achieve sub-nanosecond response to transients. Its clamping behavior is defined by a 10/1000 µs waveform test condition, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W enabling reliable operation on standard PCB copper pads (8.0 mm × 8.0 mm per terminal).
It is rated for non-repetitive peak forward surge current (IFSM) of 200 A (8.3 ms half-sine), reverse leakage ≤1.0 µA at 58 V, and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit DC bias. |
| VBR min/max | 64.4 V / 71.2 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC @ IPPM | 93.6 V at 16.0 A - Clamped voltage under 1500 W surge; defines worst-case stress on downstream components. |
| PPPM | 1500 W (10/1000 µs) - Peak energy-handling capability; supports IEC 61000-4-5 Level 4 surge immunity. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments. |
| Package | DO-214AB (SMCJ) - Surface-mount, low-profile case with matte tin-plated leads; compatible with automated placement and J-STD-002 soldering. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units and body electronics. |
Pinout & Package
SMCJ58HE3/9AT uses the DO-214AB (SMCJ) surface-mount package: molded plastic case with J-bend leads, 0.320" (8.13 mm) body length, 0.246" (6.22 mm) width, and cathode band marking on the anode-side end. Terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current sink during forward conduction | Connected to ground or low-impedance return path; carries full surge current during clamping. |
| Cathode (banded end) | Protected line connection | Connected to the line being protected (e.g., 58 V rail); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use, including temperature cycling, mechanical shock, and humidity testing. |
| Glass-passivated junction | Ensures stable VBR over time and temperature, with low parameter drift across 1000+ hours of life testing. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision for sensitive ICs. |
| MSL Level 1 rating | Enables unlimited floor life and single-reflow processing at 260 °C peak without moisture-induced damage. |
| 1500 W peak pulse power | Supports protection against severe surges such as load dump (ISO 7637-2 Pulse 5a) and EFT (IEC 61000-4-4). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 58 V battery-fed ECUs from load dump transients in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping spikes within 1 ns. Use Value: Limits voltage to ≤93.6 V during 1500 W surges, preventing damage to buck controller ICs rated for 100 V absolute maximum. |
Use Scenario: Shielding 4–20 mA current-loop sensor outputs from ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Connected across loop terminals to shunt transients before they reach analog front-end amplifiers. Use Value: With ≤1.0 µA leakage at 58 V, it avoids disturbing loop accuracy while suppressing ±15 kV contact ESD per IEC 61000-4-2. |
| DC-DC Converter Input Stage | Telecom Power Supply Protection |
Use Scenario: Safeguarding isolated flyback converter inputs against back-EMF from relay coils and motor drivers. IC Role / Device Role / Timing Role: Mounted directly at converter input capacitor to minimize inductance and maximize clamping speed. Use Value: 93.6 V clamping voltage ensures MOSFET gate drivers remain within safe SOA during 10/1000 µs surges up to 16 A. |
Use Scenario: Guarding -48 V telecom rectifier outputs against lightning-induced surges on central office distribution lines. IC Role / Device Role / Timing Role: Installed at rectifier output bus to clamp common-mode transients before they propagate to downstream boards. Use Value: AEC-Q101 qualification and 1500 W rating meet Telcordia GR-1089-CORE Level 3 surge requirements for outdoor cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD), not load dump | Select when board space is constrained and surge energy is ≤400 W. |
| SMCJ58AHE3/9AT | Same electrical specs and package, but lacks AEC-Q101 qualification (E3 vs HE3 suffix) | Approved for commercial/industrial use only; not certified for automotive production | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with SMCJ58HE3/9AT, SMAJ58A-E3/61T trades surge capacity for footprint reduction, while SMCJ58AHE3/9AT offers identical protection performance without automotive qualification-making the HE3 variant essential for Tier 1 automotive BOMs requiring traceable AEC compliance.
Availability
SMCJ58HE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor systems, and telecom power supply designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for SMCJ58HE3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and automotive-grade validation.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against ISO 7637-2 and IEC 61000-4-5 surges is mandatory.
FAQ
What is the clamping voltage of the SMCJ58HE3/9AT and how is it measured?
The SMCJ58HE3/9AT has a maximum clamping voltage (VC) of 93.6 V at 16.0 A peak pulse current, tested using a standardized 10/1000 µs double-exponential surge waveform. This value represents the worst-case voltage seen by downstream circuitry during a 1500 W transient event and is confirmed per ANSI/IEEE C62.35. The SMCJ58HE3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ58HE3/9AT suitable for automotive applications?
Yes, the SMCJ58HE3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments with junction temperatures up to +150 °C. Its HE3 suffix denotes compliance with AEC-Q101 stress tests (e.g., temperature cycling, high-temperature operating life), making it appropriate for engine control modules, ADAS power supplies, and 48 V mild-hybrid systems where SMCJ58HE3/9AT must withstand load dump and ISO 7637-2 pulses.
How does the SMCJ58HE3/9AT differ from the SMCJ58AHE3/9AT?
The SMCJ58HE3/9AT and SMCJ58AHE3/9AT share identical electrical specifications, package (DO-214AB), and RoHS compliance-but only the SMCJ58HE3/9AT carries AEC-Q101 qualification. The "H" in HE3 indicates automotive-grade screening, whereas SMCJ58AHE3/9AT is commercial-grade. For production automotive designs, SMCJ58HE3/9AT is required; SMCJ58AHE3/9AT may be used in non-automotive industrial applications where qualification is not mandated.
What is the thermal resistance of the SMCJ58HE3/9AT and why does it matter?
The SMCJ58HE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W, measured on 8.0 mm × 8.0 mm copper pads per terminal. These values determine how effectively heat from surge events dissipates into the PCB. Lower RθJL allows faster transient energy transfer to copper planes, reducing thermal stress and enabling reliable operation at elevated ambient temperatures-critical for sustained use in SMCJ58HE3/9AT-based automotive power systems.
Can the SMCJ58HE3/9AT be used in bidirectional configurations?
No, the SMCJ58HE3/9AT is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse breakdown and must be oriented with the cathode band toward the protected line. For bidirectional protection (e.g., AC lines or data buses), the SMCJ58CA series would be required. Using SMCJ58HE3/9AT in a bidirectional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
SMCJ58HE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ58HE3/9AT FAQ
1.How can I place an order for SMCJ58HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58HE3/9AT 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 SMCJ58HE3/9AT reliable?
The price and inventory of SMCJ58HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58HE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ58HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58HE3/9AT?
SMCJ58HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58HE3/9AT 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 SMCJ58HE3/9AT?
For technical support, including SMCJ58HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58HE3/9AT requirements.
6.How does Aetrix verify that SMCJ58HE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ58HE3/9AT 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 SMCJ58HE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ58HE3/9AT?
All SMCJ58HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58HE3/9AT, 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 SMCJ58HE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ58HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ58HE3/9AT Tags
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