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Vishay General Semiconductor - Diodes Division SMBJ90CAHE3_A/I
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- Part No.:
- SMBJ90CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAHE3_A/I.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,754
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Product details
Overview
SMBJ90CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 90 V standoff voltage (VWM), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), making it suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the SMBJ90CAHE3_A/I datasheet, SMBJ90CAHE3_A/I pinout, SMBJ90CAHE3_A/I application, or SMBJ90CAHE3_A/I equivalent, key selection criteria include bidirectional surge clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped avalanche diode, responding to transient overvoltages in both polarities due to its symmetrical bidirectional structure. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the 150 °C maximum junction temperature supports operation in high-ambient environments such as motor drives and base station power modules.
The SMBJ90CAHE3_A/I delivers repeatable 600 W surge suppression under 0.01% duty cycle conditions, with clamping performance validated per ANSI/IEEE C62.35. Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation into PCB copper pads, and its MSL Level 1 rating confirms suitability for lead-free reflow without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range on protected line. |
| VBR min/max | 100 V / 111 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 146 V - Clamped voltage during 4.1 A 10/1000 µs surge; determines maximum stress imposed on downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capacity; defines transient energy absorption limit per event under standardized waveform. |
| IPPM | 4.1 A - Peak surge current supported at VC; used with VC to calculate worst-case power dissipation in protection path. |
| TJ max | +150 °C - Maximum junction temperature; enables reliable operation in enclosed enclosures or near heat-generating components. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs minimum required PCB copper area for thermal management. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), matte tin-plated terminals, RoHS-compliant and halogen-free (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Transient conduction path (bidirectional) | Both terminals function identically; conducts avalanche current in either direction when VWM exceeded. |
| Anode (Cathode) | Transient conduction path (bidirectional) | No functional distinction between terminals; symmetric layout eliminates orientation constraints during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| 600 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V–48 V DC rails. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during fast transients, reducing stress on protected MOSFET gate oxides or IC ESD structures. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free soldering without baking or special handling requirements. |
| Glass passivated junction | Ensures stable leakage current (<1.0 µA) and consistent VBR over time and temperature, critical for long-life industrial deployments. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and bus voltage sense circuits against inductive kickback from relay coils and PWM-controlled motors. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across DC bus or gate-source terminals to limit transient excursions below MOSFET VDS and VGS ratings. Use Value: Prevents cumulative gate oxide degradation and catastrophic short-circuit failure by limiting VC to 146 V during 4.1 A surges. |
Use Scenario: Surge suppression on -48 V DC telecom power feeds entering remote radio units and DSLAM line cards. IC Role / Device Role / Timing Role: Primary front-end TVS on input power rail, coordinated with upstream MOVs and downstream LC filters per GR-1089-CORE. Use Value: Maintains system uptime by absorbing 600 W lightning-induced surges without degradation, verified per IEC 61000-4-5. |
| Automotive Body Control Modules | Industrial Sensor Signal Lines |
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and jump-start transients in 12 V vehicle networks. IC Role / Device Role / Timing Role: Secondary-level TVS on low-speed communication lines, placed after primary battery clamp and inline fuse. Use Value: AEC-Q101 qualification ensures survival through 1000+ thermal cycles and 1000 h HTOL, meeting OEM longevity requirements. |
Use Scenario: Shielding analog outputs (4–20 mA) and digital I²C/SPI lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional clamp mounted directly at connector entry point. Use Value: Limits induced transients to <146 V without distorting signal integrity, preserving measurement accuracy under EN 61000-4-4 EFT stress. |
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-M3/5B | Same electrical specs and SMB package; halogen-free, RoHS-compliant, but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for commercial/industrial use where extended reliability testing is not mandated. | Select when cost sensitivity outweighs automotive qualification needs and halogen-free compliance is required. |
| SMCJ90CAHE3_A/I | Same VWM, VBR, VC; higher PPPM (1500 W), larger SMC (DO-214AB) package, RθJA = 40 °C/W. | Better thermal performance and surge margin; requires larger PCB footprint and different pad layout. | Choose when system-level surge tests exceed 600 W or ambient temperatures exceed 85 °C with limited copper area. |
Compared with SMBJ90CAHE3_A/I, the SMBJ90CA-M3/5B offers identical protection performance without automotive qualification, while the SMCJ90CAHE3_A/I provides 2.5× higher surge power handling at the cost of increased board space and thermal design complexity.
Availability
SMBJ90CAHE3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, automotive body control modules, and industrial sensor signal lines requiring stable component supply across multi-year production cycles.
Supply support for SMBJ90CAHE3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where consistent clamping performance and long-term stability are critical.
FAQ
What is the maximum clamping voltage of SMBJ90CAHE3_A/I at its rated peak pulse current?
The SMBJ90CAHE3_A/I has a maximum clamping voltage (VC) of 146 V at its rated peak pulse current (IPPM) of 4.1 A under the 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 standardized surge event. The SMBJ90CAHE3_A/I maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMBJ90CAHE3_A/I suitable for automotive applications?
Yes, SMBJ90CAHE3_A/I is AEC-Q101 qualified, confirming its suitability for automotive applications including body control modules, infotainment power supplies, and sensor interfaces. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction. It undergoes rigorous stress testing for temperature cycling, high-temperature operating life, and mechanical shock-meeting OEM requirements for under-hood and cabin-mounted electronics.
What is the standoff voltage rating of SMBJ90CAHE3_A/I and how does it relate to system operating voltage?
The SMBJ90CAHE3_A/I has a reverse standoff voltage (VWM) of 90 V, meaning it remains non-conductive up to this DC or RMS AC voltage level. For reliable operation, the system's maximum continuous operating voltage should be ≤80 % of VWM (i.e., ≤72 V) to accommodate tolerances and ripple. This ensures the SMBJ90CAHE3_A/I activates only during actual transients-not during normal operation-preserving signal integrity and minimizing leakage.
Does SMBJ90CAHE3_A/I have polarity markings, and how is it mounted on PCB?
No, SMBJ90CAHE3_A/I is a bidirectional TVS diode and carries no polarity marking-both terminals are functionally identical. It is mounted in the SMB (DO-214AA) package using standard SMT reflow with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The recommended pad layout is 5.0 mm × 5.0 mm copper per terminal to achieve specified thermal and surge performance.
How does the thermal resistance of SMBJ90CAHE3_A/I affect PCB layout design?
The SMBJ90CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 5.0 mm × 5.0 mm copper pads. To maintain junction temperature below 150 °C during repetitive surges, designers must allocate sufficient copper area and consider airflow or adjacent heat sources. Reducing pad size increases RθJA, risking thermal runaway under sustained surge duty cycles-so the SMBJ90CAHE3_A/I's layout must follow Vishay's published mounting guidelines.
SMBJ90CAHE3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for SMBJ90CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAHE3_A/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 SMBJ90CAHE3_A/I reliable?
The price and inventory of SMBJ90CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ90CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAHE3_A/I?
SMBJ90CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAHE3_A/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 SMBJ90CAHE3_A/I?
For technical support, including SMBJ90CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAHE3_A/I requirements.
6.How does Aetrix verify that SMBJ90CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAHE3_A/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 SMBJ90CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ90CAHE3_A/I?
All SMBJ90CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAHE3_A/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 SMBJ90CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMBJ90CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CAHE3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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