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Vishay General Semiconductor - Diodes Division SMBJ90CAHM3_B/H
- Part No.:
- SMBJ90CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAHM3_B/H.pdf
- Description:
- 600W,90V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,370
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Product details
Overview
SMBJ90CAHM3_B/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 90 V standoff voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power dissipation with 10/1000 µs waveform - deployed on power rails and signal lines in industrial sensor interfaces and telecom infrastructure.
For engineers reviewing the SMBJ90CAHM3_B/H datasheet, SMBJ90CAHM3_B/H pinout, SMBJ90CAHM3_B/H application, or SMBJ90CAHM3_B/H equivalent, this part delivers verified bidirectional surge suppression for 90 V DC systems requiring AEC-Q101-qualified, halogen-free, RoHS-compliant TVS protection with MSL Level 1 reflow compatibility and low incremental surge resistance.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling clamping during positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the 20 °C/W junction-to-lead thermal resistance supports reliable energy dissipation under repetitive surge conditions.
The device complies with ANSI/IEEE C62.35 standards for transient suppressors and meets UL 497B recognition (QVGQ2) for protector classification. Its 150 °C maximum junction temperature and -55 °C to +150 °C operating range support deployment in harsh environments including automotive power domains and industrial control cabinets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 90 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin for 90 V nominal DC bus protection. |
| VBR (Breakdown Voltage) | 100–111 V at 1 mA - Confirmed minimum/maximum breakdown threshold ensuring predictable clamping onset across production lots. |
| VC (Clamping Voltage) | 146 V at IPPM = 4.1 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream MOSFETs or ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability per single 10/1000 µs event; enables protection against lightning-induced surges and inductive switching spikes. |
| IPPM (Peak Pulse Current) | 4.1 A - Maximum non-repetitive surge current supported at rated clamping voltage; derived from 600 W / 146 V calculation with real-world derating. |
| TJmax | +150 °C - Maximum junction temperature allowing operation in high-ambient industrial enclosures without thermal shutdown. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals with identical electrical behavior in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Both terminals serve as interchangeable surge conduction paths; no cathode band or polarity identification required for PCB layout. |
| Case / Body | Thermal and mechanical interface | Plastic molded case provides UL 94 V-0 flammability rating and transfers heat to copper pads; requires 5.0 mm × 5.0 mm pad per terminal per datasheet fig. 2. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - eliminates need for dual unidirectional devices. |
| 600 W peak pulse power | Handles high-energy transients from inductive load switching (e.g., solenoid drivers) and ESD events up to ±30 kV contact discharge per IEC 61000-4-2. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental compliance requirements for industrial and automotive end equipment; supports lead-free reflow up to 260 °C peak. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance - suitable for body electronics and infotainment power supplies. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), reducing voltage stress on protected gate drivers and microcontroller I/O pins. |
Applications
| Industrial Sensor Signal Protection | Telecom Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting 4–20 mA current loop transmitters and RS-485 nodes from induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp common-mode and differential transients. Use Value: Prevents latch-up or permanent damage to analog front-end amplifiers and isolated UART transceivers during 1 kV EFT bursts per IEC 61000-4-4. |
Use Scenario: Safeguarding 48 V DC telecom power distribution boards against lightning-induced surges on outdoor line cards. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input stage of DC-DC converters feeding base station RF modules. Use Value: Limits transient voltage to ≤146 V during 600 W 10/1000 µs events, preserving converter MOSFETs rated for 150 V VDSS. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Suppressing inductive kickback from window lift motors and seat actuator relays in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS mounted directly at motor connector interface to absorb back-EMF spikes before reaching BCM MCU GPIOs. Use Value: Enables AEC-Q101-compliant protection with <1 ns response, preventing false resets or flash corruption in microcontrollers during relay coil de-energization. |
Use Scenario: Shielding BLDC motor driver ICs in washing machines and HVAC fans from commutation noise and power-line surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across half-bridge supply rails to clamp voltage spikes exceeding 90 V nominal bus. Use Value: Maintains VDS stress below 150 V rating of 200 V-rated MOSFETs during 4.1 A surge events, extending drive-stage lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CAHE3_B/H | Same electrical specs but RoHS-compliant with brominated flame retardant (non-halogen-free); uses E3 suffix instead of HM3. | Approved for commercial-grade industrial use but not halogen-free certified; unsuitable for automotive or green-certified consumer products. | Select when halogen-free requirement is waived and cost optimization is prioritized over material compliance. |
| SMAJ90CAHM3 | Lower 400 W PPPM, 158 V VC at 3.2 A, SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; less effective in high-surge industrial environments where 600 W headroom is critical. | Choose only for space-constrained designs with verified <400 W surge exposure and ambient temperatures <85 °C. |
Compared with SMBJ90CAHE3_B/H, the SMBJ90CAHM3_B/H adds halogen-free compliance for automotive and eco-label programs; versus SMAJ90CAHM3, it delivers 50 % higher surge power handling and lower clamping voltage - essential for protecting 100 V-class power stages in demanding applications.
Availability
SMBJ90CAHM3_B/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom power rails, automotive body control modules, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ90CAHM3_B/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, and transient protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series was engineered for high-power, surface-mount surge suppression in automotive, industrial, and telecom systems - delivering consistent clamping behavior, AEC-Q101 qualification, and halogen-free compliance in standardized SMB packaging.
FAQ
What is the clamping voltage of SMBJ90CAHM3_B/H at its rated peak pulse current?
The SMBJ90CAHM3_B/H has a maximum clamping voltage (VC) of 146 V at its specified peak pulse current (IPPM) of 4.1 A under 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 146 V clamping level ensures protected circuits remain within safe operating limits during high-energy transients.
Is SMBJ90CAHM3_B/H suitable for automotive applications?
Yes, SMBJ90CAHM3_B/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive-grade reliability. It supports operating temperatures from -55 °C to +150 °C and is approved for use in body control modules, lighting drivers, and infotainment power supplies where transient immunity and long-term stability are critical.
How does the bidirectional design of SMBJ90CAHM3_B/H affect PCB layout?
The SMBJ90CAHM3_B/H has no polarity marking and symmetrical terminals, so PCB layout requires no orientation alignment - either terminal can connect to line or return. This simplifies routing for AC-coupled signals or floating buses and eliminates risk of reverse installation. The SMB (DO-214AA) package mandates 5.0 mm × 5.0 mm copper pads per terminal for optimal thermal and surge performance per datasheet fig. 2.
What is the thermal resistance specification for SMBJ90CAHM3_B/H?
SMBJ90CAHM3_B/H has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and a junction-to-ambient resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. These values ensure efficient heat transfer during repetitive surge events and support continuous operation at 5.0 W power dissipation up to 50 °C ambient temperature.
Does SMBJ90CAHM3_B/H meet UL safety certification requirements?
Yes, SMBJ90CAHM3_B/H is Underwriters Laboratories recognized under UL 497B (QVGQ2) for protector classification, with file number E136766 covering both unidirectional and bidirectional variants. This certification validates its suitability for primary and secondary circuit protection in telecom, industrial, and consumer equipment meeting North American safety standards.
SMBJ90CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ90CAHM3_B/H FAQ
1.How can I place an order for SMBJ90CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAHM3_B/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 SMBJ90CAHM3_B/H reliable?
The price and inventory of SMBJ90CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ90CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAHM3_B/H?
SMBJ90CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAHM3_B/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 SMBJ90CAHM3_B/H?
For technical support, including SMBJ90CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAHM3_B/H requirements.
6.How does Aetrix verify that SMBJ90CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAHM3_B/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 SMBJ90CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ90CAHM3_B/H?
All SMBJ90CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAHM3_B/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 SMBJ90CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ90CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CAHM3_B/H Tags
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