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Vishay General Semiconductor - Diodes Division SMBJ90AHM3/I
- Part No.:
- SMBJ90AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90AHM3/I.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,023
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Product details
Overview
SMBJ90AHM3/I 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 90 V standoff voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform - deployed on power rails and signal lines of industrial motor drives and automotive body control modules.
For engineers reviewing the SMBJ90AHM3/I datasheet, SMBJ90AHM3/I pinout, SMBJ90AHM3/I application, or SMBJ90AHM3/I equivalent, this part serves as a halogen-free, RoHS-compliant, AEC-Q101 qualified TVS for high-reliability DC power line protection where precise clamping behavior, low leakage (<1.0 µA at 90 V), and thermal robustness (TJ max = 150 °C) are critical selection criteria.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt device: under normal conditions it presents high impedance (>1 MΩ) below VWM = 90 V, then rapidly transitions to low-impedance conduction when transient voltage exceeds VBR = 100–111 V (tested at IT = 1 mA). Its clamping action limits downstream circuit voltage to ≤146 V at IPPM = 4.1 A, enabling protection of 100 V-rated MOSFETs and gate drivers.
The SMBJ90AHM3/I uses a glass-passivated silicon junction housed in an SMB (DO-214AA) thermally optimized package with RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation from –55 °C to +150 °C. Its 0.01% duty cycle rating and 100 A IFSM surge capability allow repeated transient suppression without degradation in industrial power supply front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit's nominal DC rail. |
| VBR (min/max) | 100 V / 111 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system overvoltage tolerance. |
| VC @ IPPM | 146 V at 4.1 A - Clamped voltage during 10/1000 µs surge; defines worst-case stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling with standard 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| ID @ VWM | <1.0 µA - Reverse leakage at rated standoff; minimizes quiescent power loss in battery-backed or low-power systems. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal interface per datasheet fig. 2. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C peak reflow), polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; forms shunt path during overvoltage events. |
| Cathode | High-side input terminal | Connected to protected line (e.g., 90 V DC bus); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including BCM, lighting control, and power distribution units. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU and global OEM supply chains (HM3 suffix). |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4.1 A without failure or parameter shift. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage margin between trigger and clamp, improving protection headroom for 100 V-rated ICs. |
| 100 A IFSM surge rating | Supports single half-sine 8.3 ms surges - suitable for AC rectifier input stage protection in industrial SMPS. |
Applications
| Industrial Motor Drive Power Input | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protection of 90 V DC bus feeding H-bridge gate drivers and current sensors against inductive kickback from solenoid loads. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between bus and chassis ground, triggered within <1 ps to clamp transients. Use Value: Limits voltage excursion to ≤146 V, preventing gate oxide rupture in 100 V SiC MOSFETs and ensuring ASIL-B functional safety compliance. |
Use Scenario: Surge suppression on LIN bus power rail and microcontroller VDD supply in door module ECUs exposed to load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000 µs pulses while maintaining <1 µA leakage at 90 V nominal. Use Value: Enables AEC-Q101-compliant operation across –40 °C to +125 °C ambient, with no derating required up to TJ = 150 °C. |
| Telecom DC Power Feeder Line | Renewable Energy Inverter DC Link |
|
Use Scenario: Protection of PoE-powered remote radio units against lightning-induced surges on 90 V phantom power feeders. IC Role / Device Role / Timing Role: Primary-level TVS mounted at entry point, coordinated with secondary GDT or MOV for staged energy diversion. Use Value: Provides fast-response clamping (tR < 1 ps) and 600 W pulse handling without thermal runaway, meeting ITU-T K.21 basic protection level. |
Use Scenario: DC link overvoltage suppression in 100 V-class solar microinverters subjected to rapid PV string voltage transients during partial shading. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitor bank, activated only during fault conditions exceeding 100 V. Use Value: Maintains VC ≤146 V at 4.1 A, protecting 120 V-rated electrolytic capacitors and gate drivers from catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90AHE3/I | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified). | Lacks automotive qualification and halogen-free certification; suitable for non-automotive industrial use only. | Select SMBJ90AHE3/I only if AEC-Q101 and halogen-free requirements are not mandated. |
| SMBJ90CAHM3/I | Bidirectional variant with same VWM = 90 V, but symmetric clamping in both polarities (VC = 146 V ±5%). | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, CAN FD). | Choose SMBJ90CAHM3/I only when bidirectional protection is needed; unidirectional SMBJ90AHM3/I offers lower leakage and tighter VBR tolerance. |
Compared with SMBJ90AHE3/I, the SMBJ90AHM3/I adds halogen-free construction and AEC-Q101 qualification without sacrificing clamping performance; versus SMBJ90CAHM3/I, it delivers superior unidirectional leakage control and narrower VBR spread - making SMBJ90AHM3/I optimal for fixed-polarity DC rail protection in automotive and industrial systems.
Availability
SMBJ90AHM3/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeders, and renewable energy inverters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ90AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where high pulse power, low clamping, and qualification-grade consistency are mandatory.
FAQ
What is the maximum clamping voltage of the SMBJ90AHM3/I under a 10/1000 µs surge?
The SMBJ90AHM3/I has a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current of 4.1 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88392. The SMBJ90AHM3/I maintains this clamping performance across its full operating temperature range.
Is the SMBJ90AHM3/I qualified for automotive applications?
Yes, the SMBJ90AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix and confirmed in the Vishay datasheet's Mechanical Data section. It meets stress test requirements for automotive-grade reliability, including temperature cycling, humidity bias, and surge endurance - making SMBJ90AHM3/I suitable for under-hood and body electronics such as BCMs and lighting controllers.
What does the "HM3" suffix signify in SMBJ90AHM3/I?
The "HM3" suffix in SMBJ90AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering information table, HM3 devices meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards. This distinguishes SMBJ90AHM3/I from E3 (RoHS-only) and HE3 (AEC-Q101 but not halogen-free) variants.
How does the SMBJ90AHM3/I compare to the SMBJ90AHE3/I in terms of compliance?
The SMBJ90AHM3/I adds halogen-free material compliance and AEC-Q101 qualification over the SMBJ90AHE3/I, which is RoHS-compliant but lacks both automotive qualification and halogen-free certification. Both share identical electrical parameters (VWM, VBR, VC, PPPM), but SMBJ90AHM3/I is required for Tier 1 automotive designs and green procurement mandates.
What is the thermal resistance from junction to ambient for the SMBJ90AHM3/I?
The SMBJ90AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's Thermal Characteristics table. This value assumes natural convection and is critical for calculating safe power dissipation limits in enclosed industrial enclosures.
SMBJ90AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- 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)
SMBJ90AHM3/I FAQ
1.How can I place an order for SMBJ90AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90AHM3/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 SMBJ90AHM3/I reliable?
The price and inventory of SMBJ90AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90AHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ90AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90AHM3/I?
SMBJ90AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90AHM3/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 SMBJ90AHM3/I?
For technical support, including SMBJ90AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90AHM3/I requirements.
6.How does Aetrix verify that SMBJ90AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ90AHM3/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 SMBJ90AHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ90AHM3/I?
All SMBJ90AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90AHM3/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 SMBJ90AHM3/I part is unused and in its original packaging.
Return procedure for SMBJ90AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90AHM3/I Tags
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