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Vishay General Semiconductor - Diodes Division SMBJ58A-E3/52
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- Part No.:
- SMBJ58A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58A-E3/52.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,336
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Product details
Overview
SMBJ58A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) 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 at 1 mA, 93.6 V maximum clamping voltage at 6.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the SMBJ58A-E3/52 datasheet, SMBJ58A-E3/52 pinout, SMBJ58A-E3/52 application, or SMBJ58A-E3/52 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal derating above 25 °C, unidirectional polarity alignment with DC rail orientation, and compliance with IEC 61000-4-5 Level 4 surge immunity requirements.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 58 V), but triggers avalanche conduction when transient voltage exceeds its breakdown threshold, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low dynamic impedance during clamping.
Designed for 10/1000 µs surge waveforms per IEC 61000-4-5, the SMBJ58A-E3/52 delivers 6.4 A peak pulse current capability with <93.6 V clamping, enabling protection of 60 V-rated MOSFETs and gate drivers. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads, requiring layout-aware thermal management for repetitive surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 58 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected line DC bias. |
| VBR (Breakdown Voltage) | 64.4–71.2 V at 1 mA - Guaranteed avalanche initiation range; defines minimum overvoltage threshold for clamping action. |
| VC (Clamping Voltage) | 93.6 V at IPPM = 6.4 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; must stay below downstream device's absolute max rating. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capacity for single 10/1000 µs transients; derates linearly above 25 °C ambient. |
| IPPM (Peak Pulse Current) | 6.4 A - Maximum surge current diverted during 10/1000 µs event; determines required PCB trace width and grounding path integrity. |
| RθJA (Thermal Resistance) | 100 °C/W - Junction-to-ambient thermal resistance on minimal pad layout; dictates temperature rise under sustained power dissipation. |
| TJmax | 150 °C - Maximum allowable junction temperature; limits duty cycle for repetitive surges without thermal runaway. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, RoHS-compliant, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lowest potential node; completes current path during avalanche conduction. |
| Cathode | High-side connection point | Connected to protected line (e.g., +58 V rail); polarity-sensitive - reversal prevents clamping function. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-event protection against IEC 61000-4-5 Level 4 (4 kV) surges on 24–60 V systems without external heat sinking. |
| 93.6 V clamping at 6.4 A | Provides ≥3.5 V margin below typical 100 V MOSFET drain-source breakdown, preventing destructive overvoltage during load dump. |
| Glass-passivated junction | Ensures stable VBR tolerance (<±5%) and low leakage (<1 µA at 58 V) across -55 to +150 °C operating range. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free SMT assembly without moisture-induced popcorning; no pre-bake required prior to reflow. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU Directive 2011/65/EU and JESD201 Class 2 whisker resistance; suitable for industrial and telecom applications. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of IGBT gate driver supply rails against switching-induced transients during PWM operation. IC Role / Device Role / Timing Role: Shunt clamping device placed between gate driver VDD and GND, triggered within <1 ns of overvoltage onset. Use Value: Limits gate driver IC stress to <93.6 V during 600 W surges, preserving isolation barrier integrity and preventing false turn-on. |
Use Scenario: Input-stage surge suppression on 48 V DC-DC converter front-end exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input rail, activated before upstream fuse or controller shutdown. Use Value: Clamps 4 kV/2 Ω IEC 61000-4-5 surges to <93.6 V, allowing downstream converters to remain operational after transient clearance. |
| Automotive Body Control Modules | Consumer Appliance Power Inputs |
|
Use Scenario: Load-dump protection on 12 V/24 V microcontroller power rails in vehicle lighting control units. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-rail, absorbing up to 600 W for 40 ms per ISO 7637-2 Pulse 5a. Use Value: Maintains MCU VCC <93.6 V during 120 V/100 ms load dump events, avoiding brownout resets or latch-up. |
Use Scenario: AC-DC adapter output rail protection in smart home hubs subjected to ESD and fast transients. IC Role / Device Role / Timing Role: Final-stage clamp on regulated 5–12 V output, safeguarding USB ports and SoC power inputs. Use Value: Suppresses 8 kV contact ESD (IEC 61000-4-2) with <1 ns response, limiting voltage overshoot to <93.6 V at 6.4 A peak. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free materials are mandated by end-equipment environmental policy. | Choose SMBJ58A-M3/52 when compliance with IPC-4101D/21 or JEDEC J-STD-020 halogen-free requirements is contractually required. |
| SMBJ58CA-E3/52 | Bidirectional version with same VWM (58 V), symmetric clamping in both polarities, 93.6 V clamping in either direction. | Required for AC-coupled or floating signal lines where polarity reversal or differential surges occur (e.g., RS-485, CAN bus). | Select SMBJ58CA-E3/52 only if bidirectional protection is needed; unidirectional SMBJ58A-E3/52 is optimal for DC rails with defined polarity. |
Compared with SMBJ58A-M3/52, the SMBJ58A-E3/52 offers identical surge performance but lacks halogen-free certification; versus SMBJ58CA-E3/52, it provides lower cost and tighter leakage control for DC applications, while sacrificing AC-line compatibility.
Availability
SMBJ58A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for SMBJ58A-E3/52 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, power efficiency, and AEC-Q qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against load dump, ESD, and lightning surges is mission-critical.
FAQ
What is the maximum clamping voltage of SMBJ58A-E3/52 under standard test conditions?
The SMBJ58A-E3/52 has a maximum clamping voltage (VC) of 93.6 V at a peak pulse current (IPPM) of 6.4 A using the 10/1000 µs waveform. This value is measured per IEC 61000-4-5 and represents the highest voltage the protected circuit will experience during a standardized surge event. The SMBJ58A-E3/52 maintains this clamping performance across its full operating temperature range (-55 to +150 °C), with minor derating above 25 °C ambient.
Is SMBJ58A-E3/52 suitable for automotive applications requiring AEC-Q101 qualification?
No, SMBJ58A-E3/52 is a commercial-grade part with RoHS compliance but not AEC-Q101 qualified. For automotive use, select the Vishay variant SMBJ58AHE3_B/H or SMBJ58AHM3_B/H, which carry the HE3 or HM3 suffix and are explicitly qualified to AEC-Q101. The SMBJ58A-E3/52 remains appropriate for industrial and telecom applications where AEC-Q101 is not mandated.
How does the unidirectional configuration of SMBJ58A-E3/52 affect its circuit placement?
The SMBJ58A-E3/52 is unidirectional and must be oriented with its cathode band toward the positive side of the protected DC line and anode to ground. Reversal renders it non-functional for overvoltage protection. This polarity sensitivity makes it ideal for fixed-polarity rails like 12 V, 24 V, or 48 V supplies, unlike bidirectional variants such as SMBJ58CA-E3/52, which protect AC or floating nodes without orientation constraints. The SMBJ58A-E3/52 datasheet specifies cathode marking via a visible band on the SMB package body.
What is the thermal resistance and how does it impact SMBJ58A-E3/52 layout design?
The SMBJ58A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This means each watt of dissipated surge energy raises junction temperature by 100 °C above ambient. To avoid exceeding the 150 °C maximum junction temperature during repetitive surges, PCB layout must maximize copper area, use internal ground planes, and avoid narrow traces. The SMBJ58A-E3/52 thermal performance is validated only with the specified pad dimensions.
Can SMBJ58A-E3/52 replace older P6KE56A or 1.5KE56A devices in existing designs?
SMBJ58A-E3/52 is not a direct replacement for through-hole devices like P6KE56A or 1.5KE56A due to package (SMB vs. DO-15/DO-201), mounting method (SMT vs. thru-hole), and parameter differences: SMBJ58A-E3/52 has higher power density (600 W vs. 600 W for 1.5KE but in smaller footprint), tighter VBR tolerance, and lower clamping ratio. While electrical performance is comparable, PCB redesign is required. The SMBJ58A-E3/52 offers superior board space efficiency and automated assembly compatibility over legacy axial/DO-201 packages.
SMBJ58A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 6.4A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ58A-E3/52 FAQ
1.How can I place an order for SMBJ58A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58A-E3/52 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 SMBJ58A-E3/52 reliable?
The price and inventory of SMBJ58A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ58A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58A-E3/52?
SMBJ58A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58A-E3/52 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 SMBJ58A-E3/52?
For technical support, including SMBJ58A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58A-E3/52 requirements.
6.How does Aetrix verify that SMBJ58A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ58A-E3/52 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 SMBJ58A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ58A-E3/52?
All SMBJ58A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58A-E3/52, 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 SMBJ58A-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ58A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ58A-E3/52 Tags
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