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Vishay General Semiconductor - Diodes Division SMBJ58A-E3/5B
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- Part No.:
- SMBJ58A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58A-E3/5B.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,012
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Product details
Overview
SMBJ58A-E3/5B 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 stand-off voltage (VWM), 64.4–71.2 V breakdown voltage (VBR) at 1 mA, 93.6 V maximum clamping voltage (VC) at 6.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives, automotive body control modules, and PoE-powered Ethernet interfaces.
For engineers reviewing the SMBJ58A-E3/5B datasheet, SMBJ58A-E3/5B pinout, SMBJ58A-E3/5B application, or SMBJ58A-E3/5B equivalent, key selection criteria include clamping performance under 6.4 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 58 V, it avalanches to limit transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at VWM), while the 10/1000 µs waveform rating reflects standardized lightning/surge immunity testing per ANSI/IEEE C62.35.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance RθJL = 20 °C/W enabling effective heat transfer to PCB copper. Its MSL Level 1 rating (JEDEC J-STD-020) and 260 °C lead-free reflow compatibility confirm suitability for high-volume automated assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 48 V systems. |
| VBR @ IT = 1 mA | 64.4–71.2 V - Verified avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM = 6.4 A | 93.6 V - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 600 W - Peak pulse power handling per single transient; supports IEC 61000-4-5 Level 4 compliance when properly laid out. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" pads; guides PCB copper area requirements for thermal management. |
| Package | SMB (DO-214AA) - 3.94 mm × 2.13 mm footprint with cathode band marking; compatible with industry-standard pick-and-place feeders. |
| Polarity | Unidirectional - Cathode marked by band; blocks forward conduction above ~3.5 V, enables DC-biased protection. |
Pinout & Package
SMBJ58A-E3/5B uses the SMB (DO-214AA) surface-mount package: 3.94 mm × 2.13 mm body, 1.95 mm height, matte tin-plated leads, and cathode identified by a visible band on the case end. Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per Vishay's recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to system ground or lowest potential point; completes clamping path during transients. |
| Cathode | Protected line input | Connected to line under protection (e.g., 48 V supply rail); avalanche occurs between cathode and anode when VKA > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against severe surges like ISO 7637-2 Pulse 5a (load dump) in automotive 24 V systems. |
| Clamping voltage ≤ 93.6 V at 6.4 A | Limits voltage stress on downstream 100 V-rated MOSFETs or DC-DC controllers in industrial power supplies. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and lifetime. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-bake requirements and supports standard lead-free SMT processes without popcorn risk. |
| RoHS-compliant, matte tin plating | Meets J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 for high-reliability applications. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 48 V DC bus against switching transients from brushed DC motor commutation and relay coil de-energization. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly across bus input terminals to clamp spikes before they reach gate drivers and MCU power rails. Use Value: Prevents latch-up or permanent damage to 60 V-rated half-bridge drivers by limiting transient voltage to ≤93.6 V during 6.4 A surges. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from ESD and load-dump events in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground to absorb ±30 kV HBM ESD and 12 V/200 ms load dump energy. Use Value: Maintains signal integrity below 12 V threshold while surviving 600 W surges - critical for maintaining LIN communication during battery disconnect events. |
| Telecom Power Feeds | Factory Automation Sensors |
Use Scenario: Overvoltage protection on 48 V DC power inputs of remote radio units and base station backhaul equipment. IC Role / Device Role / Timing Role: Primary clamping device on PoE+ (IEEE 802.3at) power entry, coordinated with upstream fuses and secondary filtering. Use Value: Clamps induced lightning surges to <94 V within nanoseconds, preserving 100 V input capacitors and DC-DC converter front-end stages. | Use Scenario: Shielding 24 V analog sensor outputs (e.g., 4–20 mA transmitters) from field wiring-induced transients in PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS installed at connector interface to suppress fast-rising EFT bursts (IEC 61000-4-4). Use Value: Limits clamping voltage to 93.6 V without distorting 20 kHz sensor bandwidth - verified via typical junction capacitance <100 pF at zero bias. |
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-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free materials are mandated by OEM environmental policy. | Choose SMBJ58A-M3/5B for compliance-critical industrial or automotive Tier 1 programs requiring halogen-free BOMs. |
| SMBJ58CA-E3/5B | Bidirectional version with same VWM (58 V), but symmetric clamping in both polarities; VC = 93.6 V at ±6.4 A. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN FD) where polarity reversal may occur. | Select SMBJ58CA-E3/5B only when protecting bidirectional data lines - not a drop-in replacement for unidirectional DC rail use. |
Compared with SMBJ58A-E3/5B, the M3 variant offers identical protection performance with halogen-free molding compound, while the CA variant changes polarity behavior entirely - making it unsuitable for DC-biased rails but essential for differential bus protection where reverse voltage must also be clamped.
Availability
SMBJ58A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ58A-E3/5B 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 automotive-grade qualification.
The SMBJ series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 600 W surge capability and AEC-Q101 readiness are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ58A-E3/5B under a 10/1000 µs surge?
The SMBJ58A-E3/5B has a maximum clamping voltage (VC) of 93.6 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 6.4 A. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024. The SMBJ58A-E3/5B maintains this clamping performance across its specified operating temperature range, ensuring predictable protection for downstream 100 V-rated components.
Is SMBJ58A-E3/5B suitable for automotive applications?
SMBJ58A-E3/5B is RoHS-compliant and qualified to MSL Level 1 with 260 °C lead-free reflow tolerance, but it is not AEC-Q101 qualified in the E3/5B configuration. For automotive use, Vishay specifies the HE3 or HM3 suffix variants (e.g., SMBJ58AHE3_B/I). The SMBJ58A-E3/5B remains appropriate for non-safety-critical industrial or telecom applications where AEC-Q101 is not mandated.
How does the unidirectional polarity of SMBJ58A-E3/5B affect circuit placement?
The SMBJ58A-E3/5B is unidirectional, with the cathode marked by a band on the SMB package. It must be oriented so the cathode connects to the line being protected and the anode to ground - enabling clamping only during positive transients relative to ground. Reverse connection would block normal operation and prevent protection. The SMBJ58A-E3/5B cannot protect against negative-going surges on grounded lines unless paired with a second device or replaced with a bidirectional variant like SMBJ58CA-E3/5B.
What is the thermal resistance of SMBJ58A-E3/5B, and how does it impact PCB layout?
SMBJ58A-E3/5B 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. To maintain TJ ≤ 150 °C under worst-case power dissipation, designers must allocate sufficient copper area and consider thermal vias. The SMBJ58A-E3/5B's RθJL = 20 °C/W further emphasizes the need for direct thermal coupling to inner-layer ground planes in multilayer boards.
Can SMBJ58A-E3/5B replace SMBJ58A-M3/5B in an existing design?
Yes - SMBJ58A-E3/5B and SMBJ58A-M3/5B share identical electrical characteristics, SMB package dimensions, and solderability profiles. The only difference is material composition: E3 uses standard RoHS-compliant molding compound, while M3 is halogen-free. No PCB layout or firmware changes are needed. The SMBJ58A-E3/5B is fully interchangeable with SMBJ58A-M3/5B in commercial and industrial applications unless halogen-free content is contractually required.
SMBJ58A-E3/5B 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-E3/5B FAQ
1.How can I place an order for SMBJ58A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58A-E3/5B 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-E3/5B reliable?
The price and inventory of SMBJ58A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ58A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58A-E3/5B?
SMBJ58A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58A-E3/5B 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-E3/5B?
For technical support, including SMBJ58A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58A-E3/5B requirements.
6.How does Aetrix verify that SMBJ58A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ58A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ58A-E3/5B?
All SMBJ58A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ58A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ58A-E3/5B Tags
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