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Vishay General Semiconductor - Diodes Division SMBJ90CAHM3/H
- Part No.:
- SMBJ90CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAHM3/H.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,428
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Product details
Overview
SMBJ90CAHM3/H 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 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 rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the SMBJ90CAHM3/H datasheet, SMBJ90CAHM3/H pinout, SMBJ90CAHM3/H application, or SMBJ90CAHM3/H equivalent, this part serves as a halogen-free, RoHS-compliant, AEC-Q101-qualified TVS for automotive and industrial surge protection where bidirectional clamping, low leakage (<1.0 µA at VWM), and MSL Level 1 reflow compatibility are required.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR (100–111 V), VC (146 V), and IPPM (4.1 A) specifications across reverse and forward directions. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1.0 ns), while the SMB package provides low thermal resistance (RθJL = 20 °C/W) for reliable energy dissipation under repetitive surge conditions.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with derated pulse power above 25 °C per Figure 2. It meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance, supporting automated SMT placement without lead finish concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold. |
| VBR (min/max) | 100 V / 111 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 146 V at 4.1 A - Clamped voltage seen by protected circuit during full 600 W transient; limits stress on downstream components. |
| IPPM | 4.1 A with 10/1000 µs waveform - Peak surge current capability defining transient energy handling (600 W). |
| Leakage (ID) | <1.0 µA at 90 V - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive or high-ambient industrial environments without thermal shutdown. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMT outline with 5.0 mm × 5.0 mm copper pad requirement for thermal performance. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no marking required. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; enables symmetrical clamping on AC or floating signal lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating differential lines (e.g., RS-485, CAN bus, sensor bridges) without polarity constraints. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) with margin when mounted on recommended 5.0 mm × 5.0 mm pads. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring reliability under temperature cycling and humidity exposure. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-020 MSL Level 1, enabling lead-free reflow up to 260 °C peak. |
| Low clamping ratio (VC/VBR) | 1.46 (146 V / 100 V) - Tighter than typical TVS diodes, reducing overvoltage overshoot during fast transients. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤146 V, preventing ADC saturation and latch-up while maintaining <1.0 µA leakage at 90 V nominal supply. |
Use Scenario: Shielding 24 V PLC digital input channels from inductive kickback caused by solenoid de-energization. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminals to shunt surge energy before reaching optocoupler or Schmitt trigger. Use Value: Clamps 600 W transients within nanoseconds, preserving signal integrity and extending optocoupler lifetime under repeated switching. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Safeguarding Ethernet PHY interface pins (e.g., MDI-X) against ESD per IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector entry point before PHY IC. Use Value: Sub-1 ns response time and 146 V clamping prevent PHY latch-up while adding negligible signal distortion to 100BASE-TX waveforms. |
Use Scenario: Suppressing flyback spikes on 12 V DC output rails of wall-mounted AC/DC adapters used in smart home hubs. IC Role / Device Role / Timing Role: Final-stage TVS across output capacitor to absorb residual switching noise and external surge coupling. Use Value: 90 V VWM allows safe operation with 12 V ±10 % regulation, while 600 W rating handles worst-case adapter fault transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CAHE3/H | Same electrical specs, but RoHS-compliant with standard tin plating (not halogen-free); lacks JESD201 Class 2 whisker rating. | Suitable for commercial-grade industrial controls where halogen-free compliance is not mandated. | Select SMBJ90CAHE3/H for cost-sensitive non-automotive designs with standard RoHS requirements. |
| SMAJ90CAHM3 | Lower 400 W peak power rating, 169 V clamping voltage at 3.5 A, SMA package (smaller thermal mass and pad area). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Choose SMAJ90CAHM3 only when board space is constrained and surge energy is ≤400 W. |
Compared with SMBJ90CAHE3/H, the SMBJ90CAHM3/H adds halogen-free construction and whisker resistance for automotive qualification; versus SMAJ90CAHM3, it delivers 50 % higher surge power handling and tighter clamping in the same footprint family, making it the preferred choice for robust industrial and automotive front-end protection.
Availability
SMBJ90CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply with AEC-Q101 validation and halogen-free compliance.
Supply support for SMBJ90CAHM3/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series was developed for high-energy transient suppression in automotive, industrial, and communications systems where bidirectional clamping, AEC-Q101 qualification, and standardized SMB packaging are essential design requirements.
FAQ
What is the clamping voltage of SMBJ90CAHM3/H at its rated peak pulse current?
The SMBJ90CAHM3/H has a maximum clamping voltage (VC) of 146 V at its rated peak pulse current (IPPM) of 4.1 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a full-power transient event. The SMBJ90CAHM3/H maintains this clamping performance across its operating temperature range and after multiple surge events when properly mounted.
Is SMBJ90CAHM3/H suitable for automotive applications?
Yes, SMBJ90CAHM3/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials meeting JESD201 Class 2 whisker resistance. Its –55 °C to +150 °C operating junction temperature range, 600 W surge capability, and bidirectional clamping make it appropriate for automotive body electronics, sensor interfaces, and infotainment power rails where ISO 7637-2 and IEC 61000-4-5 compliance is required.
How does the bidirectional nature of SMBJ90CAHM3/H affect its PCB layout?
The SMBJ90CAHM3/H has no polarity marking and functions identically in both directions, simplifying PCB layout for AC-coupled or floating signal paths such as RS-485, CAN, or bridge sensor outputs. No orientation check is needed during placement, and symmetric trace routing is recommended to maintain impedance balance. Its SMB (DO-214AA) footprint requires 5.0 mm × 5.0 mm copper pads per terminal for optimal thermal performance and surge energy dissipation.
What is the maximum leakage current of SMBJ90CAHM3/H at its standoff voltage?
The SMBJ90CAHM3/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated standoff voltage (VWM) of 90 V and ambient temperature of 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in battery-powered systems. Leakage remains below 5.0 µA up to 125 °C per datasheet derating curves.
Does SMBJ90CAHM3/H require heatsinking for standard operation?
No external heatsink is required for SMBJ90CAHM3/H under normal operating conditions. Its thermal resistance from junction to lead (RθJL) is 20 °C/W, and the recommended 5.0 mm × 5.0 mm copper pad per terminal provides sufficient heat spreading for 600 W transient dissipation. Continuous power dissipation is limited to 5.0 W at 50 °C ambient, which is rarely approached in TVS applications due to pulsed duty cycle (<0.01 %).
SMBJ90CAHM3/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):
- 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/H FAQ
1.How can I place an order for SMBJ90CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAHM3/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/H reliable?
The price and inventory of SMBJ90CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMBJ90CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAHM3/H?
SMBJ90CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAHM3/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/H?
For technical support, including SMBJ90CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAHM3/H requirements.
6.How does Aetrix verify that SMBJ90CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMBJ90CAHM3/H?
All SMBJ90CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAHM3/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/H part is unused and in its original packaging.
Return procedure for SMBJ90CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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