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Vishay General Semiconductor - Diodes Division SMBJ58AHE3/5B
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- Part No.:
- SMBJ58AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58AHE3/5B.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ58AHE3/5B 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 automotive ECUs, industrial I/O modules, and telecom power supplies.
For engineers reviewing the SMBJ58AHE3/5B datasheet, SMBJ58AHE3/5B pinout, SMBJ58AHE3/5B application, or SMBJ58AHE3/5B equivalent, key selection criteria include clamping performance under 6.4 A surge, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (64.4–71.2 V). Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while the glass-passivated junction enables stable, repeatable breakdown behavior across temperature (-55 to +150 °C).
The device complies with ANSI/IEEE C62.35 standards for surge suppression and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C lead-free reflow peak. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, and it is qualified to AEC-Q101 for automotive underhood applications.
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 - Measured breakdown threshold; ensures reliable triggering above normal operating voltage with 5.5% tolerance. |
| VC @ IPPM = 6.4 A | 93.6 V - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to ≤93.6 V under 600 W transient. |
| PPPM | 600 W - Peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Pulse 1/2a/5a in automotive environments. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); protects against accidental polarity reversal or load dump surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| Junction Temp Range | -55 to +150 °C - Full operational range compatible with under-hood automotive and industrial control cabinet environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line (e.g., ground or return path); defines unidirectional conduction direction. |
| Cathode | Clamping output / Surge sink node | Connected to higher-potential side (e.g., 48 V rail); conducts surge current to ground when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use per stress test requirements - supports long-term reliability in engine control, ADAS, and body electronics. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients such as ISO 7637-2 Load Dump without degradation - critical for 12 V/24 V/48 V vehicle architectures. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure to protected ICs (e.g., CAN transceivers, microcontrollers) during surge events. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture-related popcorning - suitable for high-volume SMT production lines. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) across temperature and lifetime - improves system-level EMI immunity. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery management system (BMS) input stages from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between BMS front-end regulator and battery terminal. Use Value: Limits transient voltage to ≤93.6 V during 600 W surges, preventing damage to buck converters and monitoring ICs rated for 100 V max. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Point-of-entry TVS on 24 V sensor supply line upstream of LDO and ADC driver. Use Value: Clamps fast-rising transients (<1 ns response) before they couple into precision analog circuitry, preserving measurement accuracy. |
| Telecom DC Power Input Protection | Motor Drive Control Signal Protection |
Use Scenario: Safeguarding PoE-powered network switches against AC/DC adapter surges and lightning-induced ring waves. IC Role / Device Role / Timing Role: Primary TVS on 57 V DC input rail feeding IEEE 802.3bt PD interface. Use Value: Absorbs 600 W pulses without failure, maintaining <1 µA leakage at 58 V to avoid standby power loss. |
Use Scenario: Protecting isolated gate driver inputs (e.g., optocoupler or SiO2 isolator) from Miller-induced voltage spikes during MOSFET switching. IC Role / Device Role / Timing Role: Local TVS on 15 V logic supply rail feeding high-side gate driver enable pin. Use Value: Prevents false turn-on due to dV/dt coupling by clamping transients to <93.6 V within nanoseconds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58AHE3/52 | Same electrical specs and AEC-Q101 qualification; differs only in tape-and-reel packaging (750 pcs vs. 3200 pcs per reel). | Identical functional use; selected for smaller batch prototyping or low-volume production runs. | Choose when reel size or inventory turnover favors 7" reels over 13". |
| SMBJ58AHM3/5B | Halogen-free variant with identical VWM, VBR, VC, and PPPM; same SMB package and AEC-Q101 qualification. | Used where RoHS-compliant halogen-free materials are mandated (e.g., EU automotive Tier 1 supply chains). | Specify when compliance with IEC 61249-2-21 or customer green-material requirements applies. |
Compared with SMBJ58AHE3/5B, SMBJ58AHE3/52 offers identical protection performance in a smaller reel format ideal for R&D validation, while SMBJ58AHM3/5B delivers the same clamping and surge capability with halogen-free construction - enabling material compliance without design or layout changes.
Availability
SMBJ58AHE3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input safeguarding requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ58AHE3/5B 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, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatability, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ58AHE3/5B at its rated peak pulse current?
The SMBJ58AHE3/5B has a maximum clamping voltage (VC) of 93.6 V when subjected to its rated peak pulse current of 6.4 A using the standard 10/1000 µs waveform. This value is measured under defined test conditions per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in the protected circuit. The SMBJ58AHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ58AHE3/5B qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMBJ58AHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88392. This qualification validates its reliability under accelerated stress tests including high-temperature operating life, temperature cycling, and ESD - making it suitable for automotive applications such as engine control units, body electronics, and ADAS sensors. The SMBJ58AHE3/5B meets these requirements without derating in ambient temperatures up to +125 °C.
How does the SMBJ58AHE3/5B differ from bidirectional variants like SMBJ58CA?
The SMBJ58AHE3/5B is unidirectional, meaning it clamps only in reverse bias and conducts forward current like a standard diode - ideal for DC power rail protection where polarity is fixed. In contrast, SMBJ58CA is bidirectional and symmetrical, clamping in both directions, suited for AC lines or data bus protection. The SMBJ58AHE3/5B features a cathode band marking and exhibits forward voltage drop (~3.5 V at 50 A), whereas SMBJ58CA has no polarity marking and no forward conduction path. Their VBR and VC values also differ due to structural asymmetry.
What PCB pad layout is recommended for optimal thermal and surge performance of SMBJ58AHE3/5B?
Vishay specifies mounting SMBJ58AHE3/5B on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal resistance (RθJA = 100 °C/W). These pads must be connected to internal ground/power planes via multiple thermal vias to minimize junction temperature rise during repetitive surges. Deviating from this layout reduces both surge handling and long-term reliability - especially critical in automotive and industrial applications where SMBJ58AHE3/5B operates near its thermal limits.
Can SMBJ58AHE3/5B be used in place of SMAJ58A, and what are the key trade-offs?
No - SMBJ58AHE3/5B is not a direct replacement for SMAJ58A. While both are unidirectional TVS diodes with 58 V VWM, the SMAJ series uses the smaller SMA (DO-214AC) package with lower 400 W peak pulse power and higher RθJA (~140 °C/W). Substituting SMBJ58AHE3/5B for SMAJ58A increases board area but delivers 50% higher surge energy handling and better thermal performance. The SMBJ58AHE3/5B requires revised footprint and stencil design due to larger SMB (DO-214AA) dimensions and different pad spacing.
SMBJ58AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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)
SMBJ58AHE3/5B FAQ
1.How can I place an order for SMBJ58AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58AHE3/5B 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 SMBJ58AHE3/5B reliable?
The price and inventory of SMBJ58AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ58AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58AHE3/5B?
SMBJ58AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58AHE3/5B 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 SMBJ58AHE3/5B?
For technical support, including SMBJ58AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58AHE3/5B requirements.
6.How does Aetrix verify that SMBJ58AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ58AHE3/5B 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 SMBJ58AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ58AHE3/5B?
All SMBJ58AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58AHE3/5B, 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 SMBJ58AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ58AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ58AHE3/5B Tags
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