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Vishay General Semiconductor - Diodes Division SMBJ58CAHM3/H
- Part No.:
- SMBJ58CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58CAHM3/H.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,782
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Product details
Overview
SMBJ58CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 58 V standoff voltage (VWM), 64.4–71.2 V breakdown range (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 on power rails and signal lines in industrial sensor interfaces and automotive control modules.
For engineers reviewing the SMBJ58CAHM3/H datasheet, SMBJ58CAHM3/H pinout, SMBJ58CAHM3/H application, or SMBJ58CAHM3/H equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world design context for ESD and lightning surge protection in harsh environments.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity - critical for protecting AC-coupled or floating signal paths. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), while the low incremental surge resistance enables precise voltage limiting during high-energy transients.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, supporting automated SMT assembly. Its thermal resistance (RθJA = 100 °C/W) assumes standard 0.2" × 0.2" copper pads - essential for thermal derating in continuous operation or repetitive surge scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (min/max) | 64.4 V / 71.2 V at 1 mA - guaranteed breakdown onset range; ensures predictable turn-on under surge conditions |
| VC @ IPPM | 93.6 V at 6.4 A - maximum clamped voltage during 10/1000 µs transient; limits downstream IC stress to safe levels |
| PPPM | 600 W - peak pulse power handling capability; supports IEC 61000-4-5 Level 4 surge immunity testing |
| IPPM | 6.4 A - peak pulse current corresponding to VC; used with PCB trace impedance to estimate let-through energy |
| TJ max | 150 °C - maximum junction temperature; enables reliable operation in under-hood automotive or industrial enclosures |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with pick-and-place and reflow |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as anode or cathode depending on transient polarity; no band marking required |
| Case | Non-connected thermal mass | Plastic-molded body provides mechanical protection and UL 94 V-0 flammability rating; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) in properly designed layouts |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets automotive and industrial environmental regulations without compromising thermal or electrical performance |
| Low clamping ratio (VC/VWM ≈ 1.61) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture-related popcorn failure or delamination |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting RS-485 transceivers and analog front-ends in factory automation sensors exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transients to sub-100 V. Use Value: Prevents latch-up or gate oxide damage in protected ICs by clamping surges to 93.6 V while dissipating 600 W peak energy. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins in door module ECUs subjected to load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff protection element connected between LIN line and ground, leveraging bidirectional symmetry for AC-coupled bus protection. Use Value: Maintains signal integrity during 12 V system surges up to ±100 V due to its matched forward/reverse clamping behavior. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
Use Scenario: Secondary-side DC input protection in PoE-powered network switches against induced lightning surges on 48 V rails. IC Role / Device Role / Timing Role: Primary overvoltage suppression stage upstream of DC-DC converters and PMICs. Use Value: Limits let-through voltage to 93.6 V during 10/1000 µs surges, preventing converter shutdown or MOSFET avalanche failure. | Use Scenario: Protecting MCU GPIOs and gate drivers in smart washing machine motor control boards from brush-commutator noise and inductive kickback. IC Role / Device Role / Timing Role: Localized TVS mounted directly at motor driver IC pins to minimize loop inductance and improve clamping speed. Use Value: Fast <1 ns response and low VC ensure gate oxide safety even during repetitive 100 kHz commutation spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CAHE3/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Preferred for commercial-grade automotive programs where halogen content is unrestricted | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 is mandatory |
| SAC58CA | Same VWM/VC but lower PPPM (400 W); SOD-123FL package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics with lower surge threat levels | Choose only if layout area is critical and IEC 61000-4-5 Level 3 (not Level 4) compliance suffices |
Compared with SMBJ58CAHE3/H, the SMBJ58CAHM3/H adds halogen-free compliance without sacrificing surge rating or qualification; versus SAC58CA, it delivers 50% higher pulse power and superior thermal dissipation in a slightly larger but industry-standard SMB package.
Availability
SMBJ58CAHM3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and AEC-Q101 assurance.
Supply support for SMBJ58CAHM3/H 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 and application-specific performance.
The SMBJ series was engineered for high-energy transient suppression in automotive, industrial, and telecom systems - balancing clamping precision, surge robustness, and manufacturability in surface-mount packages.
FAQ
What does the 'HM3' suffix indicate in SMBJ58CAHM3/H?
The 'HM3' suffix in SMBJ58CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive environmental standards and enables use in high-reliability applications where halogen content must be minimized - distinct from 'HE3' (RoHS + AEC-Q101 but not halogen-free) and 'E3' (commercial RoHS only).
Is SMBJ58CAHM3/H unidirectional or bidirectional?
SMBJ58CAHM3/H is a bidirectional TVS diode, as confirmed by the 'CA' suffix in its part number. It provides symmetrical clamping in both polarities - ideal for protecting AC signals, differential buses like RS-485 or CAN, and floating power domains where transient polarity is unpredictable.
What is the maximum clamping voltage for SMBJ58CAHM3/H under surge conditions?
The maximum clamping voltage (VC) for SMBJ58CAHM3/H is 93.6 V at 6.4 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper bound of voltage seen by protected circuitry during worst-case surge events.
Does SMBJ58CAHM3/H require a heatsink for standard operation?
No, SMBJ58CAHM3/H does not require an external heatsink for transient suppression duty cycles (e.g., IEC 61000-4-5 pulses). Its RθJA of 100 °C/W assumes standard 0.2" × 0.2" copper pads; continuous power dissipation is limited to 5.0 W at 50 °C ambient - well below typical TVS steady-state requirements.
How does SMBJ58CAHM3/H differ from SMBJ58A in terms of functionality?
SMBJ58CAHM3/H is bidirectional with symmetrical clamping, while SMBJ58A is unidirectional and features a cathode band marking. The 'CA' variant supports AC or polarity-agnostic protection; the 'A' variant is suited for DC rail protection where reverse conduction must be blocked - they are not interchangeable without circuit redesign.
SMBJ58CAHM3/H 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:
- -
- 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/H FAQ
1.How can I place an order for SMBJ58CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58CAHM3/H 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/H reliable?
The price and inventory of SMBJ58CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ58CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58CAHM3/H?
SMBJ58CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58CAHM3/H 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/H?
For technical support, including SMBJ58CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58CAHM3/H requirements.
6.How does Aetrix verify that SMBJ58CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ58CAHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of SMBJ58CAHM3/H?
All SMBJ58CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58CAHM3/H, 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/H part is unused and in its original packaging.
Return procedure for SMBJ58CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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