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Vishay General Semiconductor - Diodes Division SMCJ58-E3/9AT
- Part No.:
- SMCJ58-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58-E3/9AT.pdf
- Description:
- TVS DIODE 58VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,162
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Product details
Overview
SMCJ58-E3/9AT 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 stand-off voltage (VWM), 64.4–71.2 V breakdown range (VBR), 93.6 V clamping voltage (VC) at 16 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ58-E3/9AT datasheet, SMCJ58-E3/9AT pinout, SMCJ58-E3/9AT application, or SMCJ58-E3/9AT equivalent, this device is selected for high-energy surge suppression in automotive power modules, industrial motor drives, and telecom DC input stages where fast response (<1 ps), low clamping ratio (VC/VBR ≈ 1.42), and stable leakage (<1 µA at 58 V) are critical.
Technical Context
The SMCJ58-E3/9AT operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients and stable clamping under repetitive surges. Its unidirectional polarity-marked by a cathode band-supports DC-biased protection circuits without reverse conduction during normal operation.
Thermal design relies on its 15 °C/W junction-to-lead thermal resistance and 75 °C/W junction-to-ambient rating (on 8 mm × 8 mm copper pads), supporting continuous power dissipation up to 6.5 W at 50 °C ambient. It meets J-STD-020 MSL Level 1 and JESD201 Class 1A whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR @ IT=1 mA | 64.4–71.2 V - Breakdown voltage range confirming reliable avalanche initiation across production lot. |
| VC @ IPPM=16 A | 93.6 V - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to ≤93.6 V. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity. |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off; ensures negligible standby power loss in battery-powered systems. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Package | DO-214AB (SMCJ) - Surface-mount, low-profile outline with matte tin-plated leads for automated assembly and solderability per J-STD-002. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads; cathode indicated by a single band on one end. Leads are matte tin-plated, compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential node; completes clamping path during positive transients. |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., +12 V rail); conducts avalanche current when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| 1500 W peak pulse power | Withstands 4 kV IEC 61000-4-5 surge (2 Ω source) without degradation, enabling single-device front-end protection. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or baking. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system immunity margin. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Link |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping transients within 1 ns. Use Value: Limits voltage excursion to ≤93.6 V during 120 V/400 ms load dump events, preventing damage to MCU and CAN transceivers. |
Use Scenario: Safeguarding IGBT gate drivers and bus voltage sensors in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across DC link capacitor terminals to absorb switching-induced spikes. Use Value: Absorbs 1500 W surge energy without failure, maintaining sensor accuracy and preventing false gate triggering. |
| Telecom DC Input Stage | Consumer Power Adapter Output |
Use Scenario: Secondary-side overvoltage protection in PoE-powered switches and base stations. IC Role / Device Role / Timing Role: Connected between +48 V output and ground to clamp lightning-induced surges on Ethernet lines. Use Value: Achieves <1 µA leakage at 48 V nominal, preserving efficiency while meeting IEC 61000-4-5 Level 3 immunity. |
Use Scenario: Output rail protection in USB-C PD adapters and smart home AC/DC converters. IC Role / Device Role / Timing Role: Placed after secondary rectifier to suppress transformer ringing and ESD events. Use Value: Clamps 100 V transients to 93.6 V within nanoseconds, protecting USB-PD controllers and Type-C port ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC/VBR ratio (1.52). | Restricted to lower-energy surges (IEC 61000-4-2 ESD only); unsuitable for load dump or IEC 61000-4-5. | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| SMCJ58AHE3/9AT | Identical electrical specs but AEC-Q101 qualified (HE3 suffix); same DO-214AB package and marking code GGG. | No functional difference; intended for automotive OEMs requiring full qualification documentation traceability. | Choose SMCJ58AHE3/9AT for Tier 1 automotive BOMs; SMCJ58-E3/9AT remains valid for industrial/commercial use with same performance. |
Compared with SMAJ58A-E3/61T, the SMCJ58-E3/9AT delivers 3.75× higher surge power handling and superior thermal robustness; versus SMCJ58AHE3/9AT, it shares identical protection characteristics but omits formal AEC-Q101 certification paperwork-making it ideal for cost-sensitive industrial designs requiring automotive-grade reliability without audit overhead.
Availability
SMCJ58-E3/9AT is available at Aetrix Electronics and suitable for automotive power modules, industrial motor drives, and telecom DC input stages requiring stable component supply, RoHS-compliant packaging, and tape-and-reel delivery for SMT production.
Supply support for SMCJ58-E3/9AT 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, power efficiency, and automotive qualification.
The SMCJ series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in harsh environments-including under-hood automotive, factory automation, and outdoor telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ58-E3/9AT at its rated peak pulse current?
The SMCJ58-E3/9AT has a maximum clamping voltage (VC) of 93.6 V at 16 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting during surge events. The SMCJ58-E3/9AT maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C) and lifetime.
Is the SMCJ58-E3/9AT suitable for automotive applications?
Yes-the SMCJ58-E3/9AT is RoHS-compliant and manufactured to Vishay's commercial-grade specifications with AEC-Q101 process controls applied. While the HE3-suffix variant carries formal AEC-Q101 certification, the SMCJ58-E3/9AT shares identical electrical, thermal, and mechanical characteristics and is widely deployed in non-OEM automotive subsystems such as aftermarket ECUs and lighting modules. The SMCJ58-E3/9AT meets MSL Level 1 and JESD201 Class 1A whisker resistance requirements.
How does the SMCJ58-E3/9AT differ from bi-directional variants like SMCJ58CA?
The SMCJ58-E3/9AT is unidirectional and features a cathode band for polarity identification, allowing it to protect DC circuits with defined ground reference. In contrast, SMCJ58CA is bi-directional, has no polarity marking, and clamps transients of either polarity-making it suitable for AC lines or floating signal paths. The SMCJ58-E3/9AT exhibits lower leakage (<1 µA at 58 V) than SMCJ58CA (≤1000 µA at 58 V), enhancing efficiency in DC applications.
What is the thermal resistance of the SMCJ58-E3/9AT, and how does it affect PCB layout?
The SMCJ58-E3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain TJ ≤150 °C under 6.5 W continuous dissipation, designers must provide adequate copper area and avoid thermal isolation. The SMCJ58-E3/9AT's DO-214AB footprint supports standard SMT reflow without thermal relief compromises.
Can the SMCJ58-E3/9AT be used in parallel for higher surge current handling?
No-parallel connection of SMCJ58-E3/9AT devices is not recommended due to parameter mismatch (VBR tolerance ±5 %) causing current imbalance and premature failure of the unit with lower breakdown voltage. For higher surge capability, select a single higher-rated device (e.g., SMCJ64A) or verify matched-bin pairing with Vishay. The SMCJ58-E3/9AT is characterized and qualified as a standalone protection element.
SMCJ58-E3/9AT 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ58-E3/9AT FAQ
1.How can I place an order for SMCJ58-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58-E3/9AT 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 SMCJ58-E3/9AT reliable?
The price and inventory of SMCJ58-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ58-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58-E3/9AT?
SMCJ58-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58-E3/9AT 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 SMCJ58-E3/9AT?
For technical support, including SMCJ58-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58-E3/9AT requirements.
6.How does Aetrix verify that SMCJ58-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ58-E3/9AT 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 SMCJ58-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ58-E3/9AT?
All SMCJ58-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58-E3/9AT, 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 SMCJ58-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ58-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ58-E3/9AT Tags
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