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Vishay General Semiconductor - Diodes Division SMBJ58AHM3_B/I
- Part No.:
- SMBJ58AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58AHM3_B/I.pdf
- Description:
- 600W,58V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,929
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Product details
Overview
SMBJ58AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising voltage transients up to 93.6 V at 6.4 A peak pulse current, with 600 W peak pulse power (10/1000 µs), 58 V stand-off voltage, and 64.4–71.2 V breakdown voltage range. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the SMBJ58AHM3_B/I datasheet, SMBJ58AHM3_B/I pinout, SMBJ58AHM3_B/I application, or SMBJ58AHM3_B/I equivalent, key selection criteria include its 58 V working voltage, 93.6 V clamping voltage at rated surge, AEC-Q101 qualification status (HM3 suffix), halogen-free RoHS compliance, and SMB package thermal performance (RθJA = 100 °C/W).
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior under repetitive 10/1000 µs surges at 0.01% duty cycle. Its 150 °C maximum junction temperature and MSL Level 1 rating support reflow soldering at 260 °C peak.
Designed for low-inductance PCB layouts, it delivers sub-nanosecond response time and low incremental surge resistance to limit transient overvoltage before sensitive downstream circuitry. The device meets UL 497B recognition (QVGQ2) and complies with ANSI/IEEE C62.35 surge test standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 58 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold. |
| Breakdown Voltage (VBR) | 64.4–71.2 V at 1 mA - Confirmed avalanche initiation range; ensures reliable turn-on during transients. |
| Clamping Voltage (VC) | 93.6 V at 6.4 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; defines protection window. |
| Peak Pulse Power (PPPM) | 600 W - Sustained energy-handling capability per single 10/1000 µs waveform; enables robust ESD/lightning immunity. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.205" × 0.130" footprint; supports automated placement and 5.0 mm × 5.0 mm copper pad thermal design. |
| Operating Temperature | −55 °C to +150 °C - Validated junction range for industrial and automotive under-hood environments. |
| AEC-Q101 Qualified | Yes - Certified for automotive electronics per HM3 suffix; includes whisker-resistant matte tin plating and JESD201 Class 2 compliance. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked by cathode band on one end. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV exceeds VBR. |
| Anode (non-banded end) | Reference/ground return | Tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without derating in standard PCB layouts. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, tightening clamping accuracy for 3.3 V/5 V logic interface protection. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture sensitivity concerns or baking requirements. |
| Halogen-free, RoHS-compliant (HM3) | Fulfills environmental compliance for global industrial and automotive supply chains without compromising surge robustness. |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and data-line protection in safety-critical infrastructure applications. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Suppresses inductive kickback from relay coils and solenoid drivers in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed across coil terminals to divert stored energy to ground. Use Value: Limits flyback voltage to ≤93.6 V, preventing damage to driving MOSFETs rated at 100 V drain-source breakdown. |
Use Scenario: Protects LIN bus transceivers and microcontroller GPIOs from load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS on power rail and signal lines, activated within <1 ns of overvoltage onset. Use Value: Maintains 58 V operating margin while clamping 12 V system surges to safe levels compliant with ISO 7637-2 Pulse 5a. |
| Telecom Power Feeds | Consumer Sensor Interfaces |
|
Use Scenario: Shields PoE-powered Ethernet PHYs and DC-DC controllers from lightning-induced surges on 48 V input rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs. Use Value: Handles 600 W pulses without thermal runaway, enabling compact 48 V telecom power supply designs with UL 497B certification. |
Use Scenario: Guards analog outputs of MEMS pressure sensors and ADC inputs in smart home HVAC units. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional TVS on 3.3 V signal paths to preserve bandwidth. Use Value: Clamps ESD events (IEC 61000-4-2 ±8 kV contact) without distorting 10-bit sensor resolution or introducing offset drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58AHE3_B/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same electrical specs and SMB package. | Suitable for commercial-grade industrial equipment where automotive qualification is unnecessary. | Select when halogen-free content or automotive reliability validation is not required; lower cost alternative. |
| SMBJ58CAHM3_B/I | Bidirectional variant; identical VWM (58 V), VBR, and PPPM, but symmetric clamping in both polarities. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN FD) where reverse polarity surges occur. | Choose only if bidirectional protection is needed; not a drop-in replacement due to polarity and circuit topology differences. |
Compared with SMBJ58AHM3_B/I, the HE3 variant trades halogen-free content and AEC-Q101 for cost savings in non-automotive use, while the 58CAHM3_B/I adds bidirectional capability at the expense of unidirectional optimization-neither is pin-compatible without layout review.
Availability
SMBJ58AHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer sensor interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ58AHM3_B/I 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 targets high-energy transient suppression in space-constrained surface-mount applications, with design focus on industrial automation, automotive electronics, and communications infrastructure where robustness and regulatory compliance are critical.
FAQ
What is the clamping voltage of SMBJ58AHM3_B/I at its rated peak pulse current?
The SMBJ58AHM3_B/I has a maximum clamping voltage (VC) of 93.6 V at 6.4 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ58AHM3_B/I maintains this clamping performance across its qualified operating temperature range.
Is SMBJ58AHM3_B/I qualified for automotive applications?
Yes, SMBJ58AHM3_B/I is AEC-Q101 qualified, as indicated by the "HM3" suffix, which denotes halogen-free, RoHS-compliant construction with automotive-grade reliability testing. It supports automotive body electronics, infotainment power rails, and sensor interfaces meeting ISO 7637-2 and ISO 16750-2 requirements. The SMBJ58AHM3_B/I undergoes stress testing including temperature cycling, humidity bias, and mechanical shock per AEC-Q101.
What does the "HM3" suffix mean in SMBJ58AHM3_B/I?
The "HM3" suffix in SMBJ58AHM3_B/I specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification, matte tin-plated leads compliant with JESD201 Class 2 whisker resistance, and MSL Level 1 moisture sensitivity rating. It distinguishes this variant from commercial-grade "E3" or "M3" versions and confirms suitability for automotive and high-reliability industrial deployments. The SMBJ58AHM3_B/I meets UL 497B recognition under file E136766.
Can SMBJ58AHM3_B/I be used in bidirectional signal protection?
No, SMBJ58AHM3_B/I is a unidirectional TVS diode and must be used with correct polarity-cathode connected to the protected line, anode to ground. For bidirectional protection (e.g., RS-485, CAN), the SMBJ58CAHM3_B/I variant is required. Using SMBJ58AHM3_B/I on AC or floating lines risks failure during negative transients, as it lacks reverse conduction capability. The SMBJ58AHM3_B/I datasheet explicitly restricts operation to unidirectional configurations.
What is the thermal resistance of SMBJ58AHM3_B/I from junction to ambient?
The SMBJ58AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and defines the steady-state temperature rise above ambient at 5.0 W power dissipation. Derating is required above 25 °C ambient per Figure 2 in the Vishay datasheet 88392. The SMBJ58AHM3_B/I thermal performance is validated for reflow profiles up to 260 °C peak.
SMBJ58AHM3_B/I 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ58AHM3_B/I FAQ
1.How can I place an order for SMBJ58AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58AHM3_B/I 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 SMBJ58AHM3_B/I reliable?
The price and inventory of SMBJ58AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ58AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58AHM3_B/I?
SMBJ58AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58AHM3_B/I 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 SMBJ58AHM3_B/I?
For technical support, including SMBJ58AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ58AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ58AHM3_B/I 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 SMBJ58AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ58AHM3_B/I?
All SMBJ58AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58AHM3_B/I, 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 SMBJ58AHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ58AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ58AHM3_B/I Tags
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