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Vishay General Semiconductor - Diodes Division SMBJ58CAHM3_A/I
- Part No.:
- SMBJ58CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58CAHM3_A/I.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ58CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ58CAHM3_A/I datasheet, SMBJ58CAHM3_A/I pinout, SMBJ58CAHM3_A/I application, or SMBJ58CAHM3_A/I equivalent, this device is selected for robust ESD and surge immunity in bidirectional DC rails, automotive body electronics, and telecom line protection where low clamping ratio, fast response (<1 ns), and AEC-Q101 qualification are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while the 20 °C/W junction-to-lead thermal resistance supports reliable power dissipation under repetitive surges.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) standards when applied with proper PCB layout. Its MSL Level 1 rating and 260 °C lead-free reflow compatibility confirm suitability for high-volume automated assembly in commercial and automotive-grade production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working range for protected circuit. |
| VBR (min/max) | 64.4 V / 71.2 V at 1 mA - Ensures predictable turn-on threshold with tight 5% tolerance for consistent clamping behavior. |
| VC @ IPPM | 93.6 V at 6.4 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream components to safe levels. |
| PPPM | 600 W - Peak pulse power handling capability; supports repeated transient events up to 0.01% duty cycle. |
| IPPM | 6.4 A - Peak surge current capacity with 10/1000 µs waveform; determines minimum trace width and fuse coordination. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with standard pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; symmetrical terminals suitable for AC-coupled or floating DC lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts during overvoltage in either direction - no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional suppression | Enables single-device protection of AC signals or ungrounded DC buses without polarity constraints. |
| AEC-Q101 qualified | Validated for automotive applications including body control modules and infotainment power rails. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets environmental compliance requirements for global OEM supply chains and end-of-life recycling. |
| MSL Level 1, 260 °C peak reflow | Supports lead-free manufacturing without moisture sensitivity concerns or baking requirements. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) with margin when mounted per recommended pad layout. |
Applications
| Automotive Body Electronics | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail (VBAT/GND) and signal lines (LIN-H/LIN-L). Use Value: Limits transient voltage to ≤93.6 V during 6.4 A surges, preventing latch-up or gate oxide damage in 5 V/12 V automotive ICs. |
Use Scenario: Shielding 4–20 mA current loop inputs and analog sensor outputs in PLC I/O modules from field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminals to shunt induced transients before reaching precision op-amps or ADC front-ends. Use Value: Maintains signal integrity by clamping within 1 ns, with <1 µA leakage at 58 V ensuring minimal offset error in millivolt-level measurements. |
| Telecom Line Card Protection | DC Power Rail Surge Suppression |
|
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary bias rails in outdoor base station equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge limiter on +3.3 V and +12 V supply lines feeding communication ICs. Use Value: Withstands 600 W pulses without degradation, enabling compliance with GR-1089-CORE Level 3 surge immunity requirements. |
Use Scenario: Protecting switched-mode power supply outputs (e.g., 48 V telecom rectifiers) against back-fed transients from connected loads. IC Role / Device Role / Timing Role: Secondary-stage TVS placed after bulk filtering to absorb residual energy not handled by MOVs or gas discharge tubes. Use Value: Provides precise 58 V hold-off with 93.6 V clamping, avoiding false triggering while ensuring downstream regulator survival during 10/1000 µs events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CAHE3_A/I | Same electrical specs, but RoHS-compliant with tin-lead finish (not halogen-free); lacks AEC-Q101 qualification. | Suitable for commercial-grade designs where automotive qualification is not required. | Select when cost-sensitive commercial applications prioritize legacy solderability over halogen-free compliance. |
| SMAJ58CAHM3_A/I | Lower 400 W PPPM, same VWM/VC; SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; less thermal margin in high-ambient environments. | Choose only if board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4, not full 4-5 Level 4. |
Compared with SMBJ58CAHE3_A/I and SMAJ58CAHM3_A/I, the SMBJ58CAHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and 600 W surge capacity in the thermally robust SMB package - making it the preferred choice for automotive and industrial designs requiring long-term reliability under repetitive stress.
Availability
SMBJ58CAHM3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, telecom line cards, and DC power rail surge suppression requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMBJ58CAHM3_A/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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated without compromising signal fidelity or thermal stability.
FAQ
What is the clamping voltage of SMBJ58CAHM3_A/I at its rated peak pulse current?
The SMBJ58CAHM3_A/I has a maximum clamping voltage (VC) of 93.6 V at its rated peak pulse current (IPPM) of 6.4 A using the 10/1000 µs waveform. This value is measured under standardized test conditions per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ58CAHM3_A/I maintains this clamping performance across its operational temperature range (-55 °C to +150 °C).
Is SMBJ58CAHM3_A/I suitable for automotive applications?
Yes, SMBJ58CAHM3_A/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (HM3 suffix), making it suitable for automotive applications including body control modules, lighting drivers, and infotainment power rails. Its bidirectional architecture, 150 °C maximum junction temperature, and MSL Level 1 reflow rating align with automotive manufacturing and under-hood environmental requirements. The SMBJ58CAHM3_A/I meets stress-test criteria for temperature cycling, humidity, and mechanical shock per AEC-Q101.
How does the bidirectional design of SMBJ58CAHM3_A/I affect its placement on a PCB?
The SMBJ58CAHM3_A/I has no polarity marking and functions identically in both directions, allowing placement across any two nodes requiring symmetrical overvoltage protection - such as AC signal lines, floating DC buses, or differential pairs. Unlike unidirectional TVS diodes, it eliminates orientation errors during automated assembly and avoids the need for dual-device solutions. Its SMB (DO-214AA) package requires symmetric 5.0 mm × 5.0 mm copper pads per terminal to maintain specified thermal and surge performance, as defined in the Vishay datasheet.
What is the maximum leakage current of SMBJ58CAHM3_A/I at its stand-off voltage?
The SMBJ58CAHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA at its stand-off voltage (VWM) of 58 V and ambient temperature of 25 °C. This low leakage ensures minimal power loss and negligible impact on high-impedance circuits such as sensor bias networks or battery-powered monitoring systems. Leakage remains below 5 µA up to 85 °C, supporting stable operation in industrial temperature ranges without signal drift or battery drain concerns.
Does SMBJ58CAHM3_A/I require derating at elevated ambient temperatures?
Yes, SMBJ58CAHM3_A/I requires thermal derating above 25 °C ambient, following the curve in Figure 2 of the Vishay datasheet (Document Number: 88392). At 85 °C ambient, its peak pulse power rating reduces to approximately 420 W (70% of 600 W), and at 125 °C, it drops to ~240 W (40%). Derating is based on junction-to-ambient thermal resistance (RθJA = 100 °C/W) and must be applied when calculating worst-case surge survivability in enclosed or high-temperature environments. The SMBJ58CAHM3_A/I retains full functionality within its -55 °C to +150 °C junction temperature range.
SMBJ58CAHM3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ58CAHM3_A/I FAQ
1.How can I place an order for SMBJ58CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58CAHM3_A/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 SMBJ58CAHM3_A/I reliable?
The price and inventory of SMBJ58CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ58CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58CAHM3_A/I?
SMBJ58CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58CAHM3_A/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 SMBJ58CAHM3_A/I?
For technical support, including SMBJ58CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ58CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ58CAHM3_A/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 SMBJ58CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ58CAHM3_A/I?
All SMBJ58CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58CAHM3_A/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 SMBJ58CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ58CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ58CAHM3_A/I Tags
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Diodes Incorporated
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