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Vishay General Semiconductor - Diodes Division SMBJ58AHE3/52
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- Part No.:
- SMBJ58AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58AHE3/52.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,836
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Product details
Overview
SMBJ58AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. 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 a 10/1000 µs waveform.
For engineers reviewing the SMBJ58AHE3/52 datasheet, SMBJ58AHE3/52 pinout, SMBJ58AHE3/52 application, or SMBJ58AHE3/52 equivalent, this device is selected for robust overvoltage protection in DC power rails, automotive ECUs, industrial I/O interfaces, and sensor signal lines where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are critical.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, conducting only when reverse voltage exceeds VBR, with cathode-banded polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
The device delivers 600 W peak pulse power under standardized 10/1000 µs surge conditions, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It is rated for operation from –55 °C to +150 °C and qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 58 V - Maximum continuous reverse operating voltage before significant conduction begins |
| VBR (Breakdown Voltage) | 64.4–71.2 V at 1 mA - Guaranteed avalanche initiation range defining turn-on threshold |
| VC (Clamping Voltage) | 93.6 V at 6.4 A - Peak voltage seen across protected circuit during 10/1000 µs surge |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capability per single 10/1000 µs transient event |
| IPPM (Peak Pulse Current) | 6.4 A - Maximum non-repetitive surge current supported at rated clamping voltage |
| ID (Reverse Leakage) | ≤1.0 µA at 58 V - Minimal parasitic loading on protected line under normal operation |
| TJmax | +150 °C - Maximum junction temperature enabling reliable operation in under-hood or industrial environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Avalanche conduction terminal | Connected to protected line; conducts transient current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients common in automotive load-dump and industrial motor switching |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on downstream ICs such as microcontrollers and CAN transceivers |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal and electrical stress |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-supplied ECUs from ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients within safe limits for MCU and analog front-end ICs. Use Value: Limits peak voltage to ≤93.6 V during 6.4 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic devices powered from the same rail. |
Use Scenario: Safeguarding 4–20 mA current-loop sensor outputs against ESD and field-induced surges in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted across output terminals to shunt fast transients before they reach precision DACs or op-amps in transmitter circuitry. Use Value: Sub-1 ns response time and <1 µA leakage preserve loop accuracy and prevent false triggering in safety-critical monitoring applications. |
| DC Power Input Protection (24 V Systems) | Telecom Interface Port Protection |
|
Use Scenario: Guarding 24 V input stages of PoE-powered switches and industrial PLCs against accidental AC line contact and lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on main DC input, coordinated with upstream fuse and optional series impedance. Use Value: 600 W rating sustains multiple 10/1000 µs events without degradation; 150 °C TJmax supports operation in enclosed enclosures with elevated ambient temperatures. |
Use Scenario: Protecting RS-485 transceiver pins in base station backhaul equipment exposed to outdoor surge environments per IEC 61000-4-5. IC Role / Device Role / Timing Role: Unidirectional TVS on receiver inputs and driver outputs to limit differential and common-mode overvoltages. Use Value: Tight VBR tolerance (±5%) and low VC ensure compliance with RS-485 receiver common-mode range (–7 V to +12 V) during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A-E3/52 | No AEC-Q101 qualification; commercial-grade only; identical electrical specs and SMB package | Suitable for non-automotive industrial or consumer applications where automotive reliability is not required | Select when cost sensitivity outweighs need for automotive qualification and lifecycle assurance |
| SAC58A | Same VWM/VBR/VC but in smaller SOD-123FL package; 400 W PPPM; no AEC-Q101 listing | Limited to lower-energy transients; preferred where PCB space is constrained and surge threat level is moderate | Choose for space-constrained designs accepting reduced surge margin and no automotive qualification |
Compared with SMBJ58AHE3/52, the SMBJ58A-E3/52 offers identical protection performance without AEC-Q101 validation, while SAC58A trades 33% lower peak power and smaller footprint for reduced ruggedness-making SMBJ58AHE3/52 optimal for automotive and high-reliability industrial deployments requiring full 600 W surge immunity and certified qualification.
Availability
SMBJ58AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom interface modules, and sensor signal conditioning circuits requiring stable component supply and long-term manufacturing continuity.
Supply support for SMBJ58AHE3/52 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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness, consistency, and qualification compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ58AHE3/52 at its rated peak pulse current?
The SMBJ58AHE3/52 has a maximum clamping voltage (VC) of 93.6 V at 6.4 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on the protected circuit during surge events. The SMBJ58AHE3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBJ58AHE3/52 suitable for automotive applications?
Yes, SMBJ58AHE3/52 is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's official datasheet revision 09-Jan-2024. It meets automotive reliability requirements including temperature cycling, humidity testing, and mechanical shock, making it appropriate for engine control modules, body electronics, and ADAS power supplies where certified transient protection is mandated.
What does the "HE3" suffix indicate in SMBJ58AHE3/52?
The "HE3" suffix in SMBJ58AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and halogen-free molding compound. It distinguishes this variant from commercial-grade versions (e.g., E3) and confirms compliance with automotive reliability standards, traceability requirements, and environmental regulations-critical for Tier 1 suppliers and OEM design-in processes.
How does SMBJ58AHE3/52 differ from bidirectional variants like SMBJ58CA?
SMBJ58AHE3/52 is unidirectional and features a cathode band for polarity identification, conducting only in reverse bias above VBR. In contrast, SMBJ58CA is bidirectional with symmetrical breakdown in both directions and no polarity marking. The SMBJ58AHE3/52 is used where DC polarity is fixed (e.g., power rail protection), while SMBJ58CA suits AC or floating signal lines like data buses.
What is the thermal resistance of SMBJ58AHE3/52, and how does it affect layout?
SMBJ58AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe junction temperatures under repeated surges, PCB layout must use minimum recommended copper pad areas (0.2" × 0.2" per terminal) and avoid excessive trace length or isolation. The SMBJ58AHE3/52 relies on thermal conduction through leads and pads-not airflow-for heat dissipation.
SMBJ58AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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):
- 6.4A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ58AHE3/52 FAQ
1.How can I place an order for SMBJ58AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58AHE3/52 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 SMBJ58AHE3/52 reliable?
The price and inventory of SMBJ58AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ58AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58AHE3/52?
SMBJ58AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58AHE3/52 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 SMBJ58AHE3/52?
For technical support, including SMBJ58AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58AHE3/52 requirements.
6.How does Aetrix verify that SMBJ58AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ58AHE3/52 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 SMBJ58AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ58AHE3/52?
All SMBJ58AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58AHE3/52, 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 SMBJ58AHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ58AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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