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Vishay General Semiconductor - Diodes Division SMBJ90A-E3/5B
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- Part No.:
- SMBJ90A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90A-E3/5B.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,577
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Product details
Overview
SMBJ90A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in DC power rails 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 - deployed in industrial motor drives, automotive body control modules, and telecom power supplies.
For engineers reviewing the SMBJ90A-E3/5B datasheet, SMBJ90A-E3/5B pinout, SMBJ90A-E3/5B application, or SMBJ90A-E3/5B equivalent, key selection criteria include clamping performance under 4.1 A surge, thermal resistance (RθJA = 100 °C/W), RoHS-compliant matte tin plating, SMB (DO-214AA) package compatibility with automated placement, and unidirectional polarity marking via cathode band.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR (100–111 V), it avalanches rapidly to limit downstream voltage to ≤146 V at rated IPPM. Its glass-passivated junction ensures stable leakage (<1.0 µA at 90 V) and fast response time (<1.0 ps), critical for protecting MOSFET gates and microcontroller I/O against ESD and inductive switching spikes.
The device is rated for 150 °C max junction temperature, derates linearly above 25 °C ambient per Fig. 2, and meets MSL Level 1 (JEDEC J-STD-020) with 260 °C reflow peak. Its 20 °C/W junction-to-lead thermal resistance supports localized heat dissipation during repetitive transients when mounted on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (min/max) | 100 V / 111 V at 1.0 mA - Breakdown onset range; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | 146 V at 4.1 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's worst-case overvoltage stress. |
| PPPM | 600 W - Peak pulse power handling capability; validates survivability against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at 90 V; negligible power loss and no false triggering in low-power sensor interfaces. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; requires ≥5.0 mm × 5.0 mm copper pad per terminal for full rating. |
| Package | SMB (DO-214AA) - Low-profile SMD outline (5.21 mm × 4.06 mm × 2.20 mm); compatible with standard pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity indicated by cathode band on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point; completes clamping path during overvoltage events. |
| Cathode | High-side input node | Connected to protected line (e.g., 90 V supply rail); band-marked end carries transient current into ground. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial equipment. |
| Clamping ratio VC/VBR ≈ 1.46 | Minimizes voltage overshoot during transients - critical for safeguarding 100 V-rated MOSFETs and gate drivers. |
| MSL Level 1 moisture sensitivity | Enables direct use from reel without baking; supports high-throughput SMT assembly with 260 °C peak reflow. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms commercial-grade RoHS compliance; M3 suffix adds halogen-free certification per IEC 61249-2-21. |
| 150 °C maximum junction temperature | Supports operation in under-hood automotive environments and enclosed industrial enclosures without derating. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 90 V DC bus in brushless motor controllers against inductive kickback from H-bridge switching. IC Role / Device Role / Timing Role: Shunt TVS placed across DC link capacitor to clamp voltage spikes up to 146 V within nanoseconds. Use Value: Prevents MOSFET avalanche failure and gate oxide damage during rapid current interruption, extending drive reliability. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground to suppress ±100 V pulses. Use Value: Maintains communication integrity during ISO 7637-2 Pulse 5a (load dump) events without requiring additional filtering. |
| Telecom Power Supplies | Industrial Sensor Signal Conditioning |
|
Use Scenario: Overvoltage clamping on +90 V bias rail feeding RF power amplifiers in base station power systems. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC/DC converters and LDOs. Use Value: Limits transient energy entering sensitive RF stages, avoiding latch-up or parametric shift in GaN FETs. |
Use Scenario: Protecting analog front-end inputs of 4–20 mA loop-powered sensors exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) TVS placed across input terminals to clamp ESD and lightning-induced spikes. Use Value: Preserves measurement accuracy by preventing input-stage saturation or op-amp rail-to-rail excursion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free compliance (IEC 61249-2-21) is mandated. | Choose SMBJ90A-M3/5B for green manufacturing programs requiring halogen-free bill-of-materials. |
| SMCJ90A-E3/5B | Same VWM/VC ratings but in larger SMC (DO-214AB) package; 1500 W PPPM, lower RθJA (50 °C/W). | Higher surge capacity and better thermal performance; requires larger PCB footprint (7.11 mm × 6.22 mm). | Choose SMCJ90A-E3/5B when system-level surge testing exceeds 600 W or board layout allows larger package. |
Compared with SMBJ90A-E3/5B, SMBJ90A-M3/5B offers identical protection performance with halogen-free construction, while SMCJ90A-E3/5B delivers 2.5× higher surge power handling in a physically larger package - enabling trade-offs between board space, environmental compliance, and ruggedness.
Availability
SMBJ90A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, RoHS compliance, and proven surge immunity.
Supply support for SMBJ90A-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and AEC-Q qualification.
The SMBJ series targets cost-sensitive, high-volume transient protection applications across automotive, industrial, and communications markets - engineered for automated assembly, thermal robustness, and consistent clamping performance.
FAQ
What is the clamping voltage of SMBJ90A-E3/5B at its rated peak pulse current?
The SMBJ90A-E3/5B has a maximum clamping voltage (VC) of 146 V at its rated peak pulse current (IPPM) of 4.1 A, measured using the standardized 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Electrical Characteristics table of Vishay document 88392. The SMBJ90A-E3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBJ90A-E3/5B suitable for automotive applications?
SMBJ90A-E3/5B is a commercial-grade part (E3 suffix) and not AEC-Q101 qualified; however, it shares identical electrical and thermal characteristics with the AEC-Q101-qualified variant SMBJ90AHE3_B/I. For non-safety-critical automotive subsystems like infotainment power rails or lighting controls where qualification is not mandated, SMBJ90A-E3/5B provides proven transient suppression. Always verify system-level compliance requirements before deployment. The SMBJ90A-E3/5B remains widely used in Tier-2 automotive designs.
What does the "/5B" suffix mean in SMBJ90A-E3/5B?
"/5B" denotes the preferred package code indicating 13-inch diameter plastic tape and reel packaging containing 3200 units per reel. This format is optimized for high-speed SMT placement equipment and supports just-in-time manufacturing workflows. The "E3" prefix confirms RoHS-compliant, commercial-grade construction with matte tin-plated leads. The SMBJ90A-E3/5B thus combines regulatory compliance, automated assembly readiness, and scalable logistics - all verified in Vishay's ordering information table (Document 88392, page 3).
How does SMBJ90A-E3/5B compare to bidirectional variants like SMBJ90CA?
SMBJ90A-E3/5B is unidirectional and features a cathode band for polarity identification, whereas SMBJ90CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The SMBJ90A-E3/5B exhibits forward voltage drop (~3.5 V at 50 A) and is intended for DC rail protection where polarity is fixed; SMBJ90CA suits AC-coupled or differential signal lines. Their VWM, VBR, and VC values differ accordingly - SMBJ90A-E3/5B is not interchangeable with SMBJ90CA without circuit redesign.
What PCB layout guidance applies to SMBJ90A-E3/5B for optimal thermal performance?
To achieve the rated 600 W peak pulse power and prevent thermal runaway, SMBJ90A-E3/5B must be mounted on minimum 5.0 mm × 5.0 mm copper pads per terminal, as specified in Vishay's test condition notes. Trace width should be ≥1.5 mm, and thermal vias (≥4× 0.3 mm diameter) are recommended beneath each pad to inner ground planes. Avoid narrow traces between the SMBJ90A-E3/5B and protected IC - short, low-inductance paths ensure effective clamping. These practices are validated in the "Mounting Pad Layout" diagram (Document 88392, page 5).
SMBJ90A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ90A-E3/5B FAQ
1.How can I place an order for SMBJ90A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90A-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 SMBJ90A-E3/5B reliable?
The price and inventory of SMBJ90A-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 SMBJ90A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ90A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90A-E3/5B?
SMBJ90A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90A-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 SMBJ90A-E3/5B?
For technical support, including SMBJ90A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90A-E3/5B requirements.
6.How does Aetrix verify that SMBJ90A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ90A-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 SMBJ90A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ90A-E3/5B?
All SMBJ90A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90A-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 SMBJ90A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ90A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90A-E3/5B Tags
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