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Vishay General Semiconductor - Diodes Division SMBJ90CA-E3/5B
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- Part No.:
- SMBJ90CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CA-E3/5B.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,542
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Product details
Overview
SMBJ90CA-E3/5B 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, sensor interfaces, and industrial I/O circuits.
For engineers reviewing the SMBJ90CA-E3/5B datasheet, SMBJ90CA-E3/5B pinout, SMBJ90CA-E3/5B application, or SMBJ90CA-E3/5B equivalent, this device is selected for robust ESD and surge protection in automotive-grade and industrial control systems where bidirectional clamping, low leakage (<1 µA at VWM), and AEC-Q101-compliant variants are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior during positive and negative transients. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), low incremental surge resistance, and fast response time (<1 ns) to transient events such as inductive switching spikes and lightning-induced surges.
Thermally, it supports operation from –55 °C to +150 °C junction temperature, with RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable performance on standard PCB copper pads (0.2" × 0.2") without active cooling. The device meets MSL Level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min) | 100 V at 1 mA test current - Ensures consistent turn-on threshold for transient suppression across production lots. |
| VC (max) | 146 V at 4.1 A IPPM - Limits downstream voltage stress during 10/1000 µs surge, protecting 100 V-rated components. |
| PPPM | 600 W - Sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure under defined duty cycle (0.01%). |
| IPPM | 4.1 A - Peak surge current capability with 10/1000 µs waveform; determines minimum trace width and layout robustness. |
| ID (max) | 1 µA at VWM - Ultra-low leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | +150 °C - Enables deployment in under-hood automotive and high-temperature industrial environments. |
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); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path for both positive and negative surges; connects to protected line or ground reference. |
| Cathode | Transient return path (bidirectional) | Electrically identical to anode in CA devices; no functional distinction - both terminals serve as interchangeable surge shunt points. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge testing when properly laid out with low-inductance grounding. |
| Bidirectional clamping symmetry | Enables single-device protection of AC-coupled or floating differential signals without polarity concerns. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during fast transients, reducing risk of gate oxide damage in protected MOSFETs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak, simplifying SMT manufacturing flow. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications requiring validated reliability and extended temperature cycling. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing lines against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between gate driver output and MOSFET gate, limiting transient excursions to <146 V. Use Value: Prevents gate oxide rupture and false triggering during 100 V+ switching transients, extending system MTBF. |
Use Scenario: Surge suppression on LIN bus lines and door module sensor inputs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary TVS element on each LIN node, shunting transients before they reach transceiver IC input pins. Use Value: Maintains communication integrity during ISO 16750-2 load dump (up to 120 V, 400 ms), avoiding bus lockup or reset. |
| Telecom Power Supply Rails | Industrial PLC Analog Inputs |
|
Use Scenario: Input-stage protection for 48 V telecom DC-DC converters subjected to lightning-induced surges on primary-side traces. IC Role / Device Role / Timing Role: First-line clamping device across bulk input capacitor, absorbing energy before upstream fuse opens. Use Value: Withstands 600 W pulses without degradation, eliminating need for redundant TVS stages in space-constrained modules. |
Use Scenario: Overvoltage safeguard for 0–10 V analog input channels connected to field transmitters in harsh factory environments. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) bidirectional clamp placed directly at connector interface, before signal conditioning op-amps. Use Value: Preserves measurement accuracy by preventing input stage saturation while surviving repeated 1 kV EFT bursts per IEC 61000-4-4. |
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 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No difference in circuit function or layout; selected where halogen-free compliance is mandated (e.g., EU public infrastructure). | Direct material substitution when halogen-free certification is required; same thermal and clamping performance. |
| SAC90CA | Same VWM/VC ratings but in smaller SOD-123 package (lower PPPM = 400 W, lower IPPM = 2.7 A). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or high-current inductive loads. | Select only for space-constrained consumer electronics with verified sub-400 W surge profiles. |
Compared with SMBJ90CA-E3/5B, the M3/5B offers identical protection performance with halogen-free construction, while SAC90CA trades 33% lower surge capacity for 40% smaller footprint - making SMBJ90CA-E3/5B optimal for industrial-grade reliability where full 600 W headroom is essential.
Availability
SMBJ90CA-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and PLC analog input protection requiring stable component supply and long-term manufacturability.
Supply support for SMBJ90CA-E3/5B 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 protection devices with emphasis on reliability, efficiency, and automotive qualification.
The SMBJ series was engineered for high-energy transient suppression in demanding environments, targeting industrial automation, automotive electronics, and telecom infrastructure where robustness and consistency are critical.
FAQ
What is the clamping voltage of SMBJ90CA-E3/5B at its rated peak pulse current?
The SMBJ90CA-E3/5B has a maximum clamping voltage (VC) of 146 V at 4.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. Designers use this parameter to verify that downstream components remain within their absolute maximum ratings during transient exposure. The SMBJ90CA-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ90CA-E3/5B suitable for automotive applications?
SMBJ90CA-E3/5B is RoHS-compliant and qualified to MSL Level 1, but it is not AEC-Q101 certified in the E3/5B configuration. For automotive use, Vishay offers the SMBJ90CAHE3_B/I variant (AEC-Q101 qualified, halogen-free, 13" reel). The SMBJ90CA-E3/5B may be used in non-safety-critical automotive subsystems if customer qualification is performed, but the HE3/HM3 versions are recommended for production automotive designs. Always verify qualification status via Vishay's official part numbering guide before final selection.
How does the bidirectional design of SMBJ90CA-E3/5B affect PCB layout?
The SMBJ90CA-E3/5B has no polarity marking and functions identically in either orientation, simplifying PCB layout by eliminating orientation checks during automated placement. Both terminals serve as symmetrical surge shunt paths, allowing direct placement across any two-point node - such as between a signal line and chassis ground or across differential pairs. This eliminates the need for silkscreen polarity indicators and reduces assembly errors. Layout best practices still require short, low-inductance traces to ground and adequate copper pour for thermal dissipation, as specified in Vishay's DO-214AA mounting recommendations.
What is the maximum steady-state power dissipation of SMBJ90CA-E3/5B?
The SMBJ90CA-E3/5B has a maximum steady-state power dissipation (PD) of 5.0 W at TA = 50 °C on an infinite heatsink. In real-world PCB applications, derating applies: at 25 °C ambient, PD remains ~5.0 W, but drops linearly to zero at 150 °C junction temperature. This rating governs continuous leakage power handling - though typical ID is ≤1 µA at 90 V, resulting in <0.1 mW static dissipation. The 5.0 W rating primarily supports short-duration repetitive surges, not DC loading. The SMBJ90CA-E3/5B must never be operated continuously near its thermal limits.
Can SMBJ90CA-E3/5B replace unidirectional TVS diodes like SMBJ90A-E3/5B?
No - SMBJ90CA-E3/5B is strictly bidirectional and cannot substitute for unidirectional types like SMBJ90A-E3/5B in DC-biased circuits. Unidirectional devices conduct forward current during positive transients and block reverse current, whereas SMBJ90CA-E3/5B clamps equally in both directions. Using it in place of SMBJ90A-E3/5B on a positively biased rail would cause unintended conduction during normal operation. The "CA" suffix explicitly denotes bidirectional functionality; replacement requires verifying circuit topology, biasing, and transient polarity requirements. Always match suffix (A vs. CA) to application needs.
SMBJ90CA-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ90CA-E3/5B FAQ
1.How can I place an order for SMBJ90CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CA-E3/5B 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 SMBJ90CA-E3/5B reliable?
The price and inventory of SMBJ90CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ90CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CA-E3/5B?
SMBJ90CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CA-E3/5B 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 SMBJ90CA-E3/5B?
For technical support, including SMBJ90CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CA-E3/5B requirements.
6.How does Aetrix verify that SMBJ90CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ90CA-E3/5B 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 SMBJ90CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ90CA-E3/5B?
All SMBJ90CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CA-E3/5B, 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 SMBJ90CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ90CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CA-E3/5B Tags
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