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Vishay General Semiconductor - Diodes Division SMBJ90CAHE3/52
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- Part No.:
- SMBJ90CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAHE3/52.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,924
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Product details
Overview
SMBJ90CAHE3/52 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 power and signal 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, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial motor drives.
For engineers reviewing the SMBJ90CAHE3/52 datasheet, SMBJ90CAHE3/52 pinout, SMBJ90CAHE3/52 application, or SMBJ90CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, UL 497B recognition, low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 90 V), but triggers into low-impedance conduction when transient voltage exceeds its 100–111 V breakdown range. Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
The SMBJ90CAHE3/52 is rated for repetitive 10/1000 µs surges at 0.01% duty cycle, derated above 25 °C per Fig. 2, with junction temperature range of –55 °C to +150 °C and MSL Level 1 moisture sensitivity. It meets UL 497B (QVGQ2) and is halogen-free RoHS-compliant with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (min/max) | 100 V / 111 V at 1 mA - Ensures reliable triggering across process variation; guarantees clamping initiates no later than 111 V. |
| VC @ IPPM | 146 V at 4.1 A - Clamped voltage seen by protected circuit during 10/1000 µs surge; determines maximum stress on downstream components. |
| PPPM | 600 W - Peak transient energy absorption capacity; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance enables efficient heat transfer to PCB copper, critical for repetitive surge handling. |
| TJ max | +150 °C - Enables operation in high-temperature environments such as automotive engine compartments or industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per JESD47. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output path; identical electrical behavior in both directions - enables single-component protection of AC or floating lines. |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal forms complete bidirectional clamp; requires no orientation during placement - reduces assembly error risk. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or differential signal lines (e.g., RS-485, CAN bus) without external polarity management. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV open-circuit / 2 kA short-circuit without degradation. |
| AEC-Q101 qualified | Validated for automotive applications including body electronics, infotainment power rails, and ADAS sensor interfaces. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free reflow profiles without preconditioning - eliminates manufacturing complexity and cost. |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal line protectors - simplifies end-equipment certification. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate driver supply rails against inductive kickback from relay coils and solenoid switching. IC Role / Device Role / Timing Role: Shunt TVS placed between VDD and GND to clamp transients before they reach isolated gate drivers (e.g., Si823x) or MCU GPIOs. Use Value: Limits voltage excursion to ≤146 V, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces while surviving >100,000 surge events. |
Use Scenario: Surge suppression on LIN bus lines exposed to load dump and battery reversal transients in door modules. IC Role / Device Role / Timing Role: Bidirectional clamp across LIN signal and ground, absorbing ±100 V transients induced by ESD or alternator load dump. Use Value: Maintains signal integrity below 146 V clamping level, ensuring uninterrupted communication during ISO 16750-2 pulse 5a/b tests. |
| Telecom Power Feeds | Industrial Sensor Signal Conditioning |
|
Use Scenario: Protection of 48 V DC power inputs in PoE-powered network switches against lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end TVS on input rail, coordinated with upstream MOVs and downstream DC-DC converters. Use Value: Absorbs 600 W pulses without thermal runaway, enabling compliance with IEC 61000-4-5 Ed. 3 Class 4 (4 kV/2 kA) test requirements. |
Use Scenario: Transient suppression on analog output lines (e.g., 4–20 mA loops) of pressure/temperature transmitters in factory automation. IC Role / Device Role / Timing Role: Bidirectional clamp across signal and return, guarding precision DACs and op-amps from field wiring ESD. Use Value: Leakage <1 µA at 90 V preserves loop accuracy; 146 V clamping prevents saturation of rail-to-rail output stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA-M3/52 | Same electrical specs and package; halogen-free RoHS-compliant, but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for commercial/industrial use only. | Select when AEC-Q101 is not required and halogen-free compliance is mandated. |
| SMCJ90CAHE3/52 | Same VWM/VC, but larger SMC (DO-214AB) package with 1500 W PPPM and higher IPPM (9.9 A). | Higher surge capacity suits mains-connected equipment; requires larger PCB footprint. | Select when system-level surge immunity exceeds 600 W or layout allows SMC footprint. |
Compared with SMBJ90CA-M3/52, the SMBJ90CAHE3/52 adds AEC-Q101 qualification for automotive deployment; compared with SMCJ90CAHE3/52, it trades surge capacity for compact SMB footprint - ideal for space-constrained board-level protection where 600 W suffices.
Availability
SMBJ90CAHE3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply with automotive-grade reliability and rapid fulfillment.
Supply support for SMBJ90CAHE3/52 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, industry-standard packaging and rigorous qualification.
The SMBJ series targets board-level transient protection in automotive, industrial, and telecom systems - optimized for automated SMT assembly, thermal performance, and standardized surge immunity compliance.
FAQ
What is the clamping voltage of SMBJ90CAHE3/52 at its rated peak pulse current?
The SMBJ90CAHE3/52 has a maximum clamping voltage (VC) of 146 V at 4.1 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ90CAHE3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ90CAHE3/52 suitable for automotive applications?
Yes, SMBJ90CAHE3/52 is AEC-Q101 qualified and specifically intended for automotive use, including body electronics, infotainment power rails, and sensor interfaces. Its qualification covers HTOL, temperature cycling, UHAST, and ESD testing per JESD47. The SMBJ90CAHE3/52 also carries UL 497B recognition (QVGQ2), supporting end-equipment safety certification in vehicle platforms.
How does the bidirectional design of SMBJ90CAHE3/52 affect its circuit implementation?
The SMBJ90CAHE3/52 has symmetrical anode/cathode terminals and identical electrical behavior in both directions, eliminating polarity concerns during placement. This enables direct protection of AC-coupled lines (e.g., RS-485, CAN, LIN) or floating signal pairs without external diodes or orientation checks. The SMBJ90CAHE3/52 simplifies layout and reduces BOM count in differential or ungrounded systems.
What is the thermal resistance from junction to lead (RθJL) for SMBJ90CAHE3/52?
The SMBJ90CAHE3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, measured per JEDEC standards. This low value enables efficient heat transfer from the silicon die to the PCB copper pads, supporting repetitive surge handling and stable operation at elevated ambient temperatures. The SMBJ90CAHE3/52 achieves this with its SMB (DO-214AA) package and matte tin-plated leads soldered per J-STD-002.
Does SMBJ90CAHE3/52 meet UL safety standards?
Yes, SMBJ90CAHE3/52 is Underwriters Laboratories (UL) recognized under standard UL 497B for protectors, with file number E136766. This applies to both unidirectional and bidirectional variants. The UL recognition confirms suitability for use in telecom and industrial signal line protection where safety agency approval is required. The SMBJ90CAHE3/52 also meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
SMBJ90CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ90CAHE3/52 FAQ
1.How can I place an order for SMBJ90CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAHE3/52 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 SMBJ90CAHE3/52 reliable?
The price and inventory of SMBJ90CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ90CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAHE3/52?
SMBJ90CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAHE3/52 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 SMBJ90CAHE3/52?
For technical support, including SMBJ90CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ90CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAHE3/52 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 SMBJ90CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ90CAHE3/52?
All SMBJ90CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAHE3/52, 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 SMBJ90CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ90CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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