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Vishay General Semiconductor - Diodes Division SMBJ90AHE3/5B
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- Part No.:
- SMBJ90AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90AHE3/5B.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,678
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Product details
Overview
SMBJ90AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of 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 to protect gate drivers from inductive switching transients.
For engineers reviewing the SMBJ90AHE3/5B datasheet, SMBJ90AHE3/5B pinout, SMBJ90AHE3/5B application, or SMBJ90AHE3/5B equivalent, this device is selected for high-reliability DC bus protection where fast response (<1 ps), low clamping ratio (1.62×VWM), AEC-Q101 qualification, and MSL Level 1 moisture sensitivity are critical design requirements.
Technical Context
This TVS operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 100–111 V breakdown range at 1 mA test current. Its clamping action limits transient energy to ≤146 V at 4.1 A, enabling protection of downstream MOSFETs and controllers against ESD, load dump, and inductive kick events.
Thermally, it sustains 150 °C junction temperature with 100 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads. The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification - required for automotive-grade power electronics and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 90 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected line voltage. |
| VBR (Breakdown Voltage) | 100–111 V at 1 mA - Confirmed avalanche initiation range; ensures reliable triggering above nominal rail. |
| VC (Clamping Voltage) | 146 V at IPPM = 4.1 A - Peak voltage seen by protected circuit during 10/1000 µs surge; defines worst-case stress level. |
| PPPM (Peak Pulse Power) | 600 W - Sustained surge energy handling per 10/1000 µs waveform; supports repetitive 0.01% duty cycle transients. |
| IPPM (Peak Pulse Current) | 4.1 A - Maximum non-repetitive surge current capability; determines minimum series impedance needed for coordination. |
| TJmax | 150 °C - Maximum junction temperature; enables operation in under-hood or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount footprint with 5.59 mm max length, 4.06 mm max width, and 2.20 mm max height; compatible with automated placement. |
Pinout & Package
Package: SMB (DO-214AA), unidirectional configuration with cathode band marking on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes conduction path during reverse transient. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 90 V DC bus); avalanche conduction occurs when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics - supports deployment in engine control units and ADAS power supplies without requalification. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from 24 V/48 V industrial systems and automotive load-dump events without degradation. |
| Clamping ratio ≤1.62×VWM | Ensures protected ICs experience <146 V stress even during worst-case 4.1 A surges - within safe margin for 150 V-rated components. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related popcorn failure or delamination. |
| Glass passivated junction | Provides stable leakage performance (<1 µA at 90 V) and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 90 V DC link in servo amplifier power stages against inductive switching spikes from IGBT/MOSFET turn-off. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus to clamp transients within 1 ps, limiting voltage overshoot to ≤146 V. Use Value: Prevents gate oxide rupture in 100 V-rated SiC MOSFETs and avoids false triggering of overvoltage protection circuits. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins in body control units exposed to battery load-dump pulses. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between LIN line and chassis ground to absorb 100 V/40 ms load-dump energy. Use Value: Maintains communication integrity during ISO 7637-2 Pulse 5a events without requiring additional filtering or derating. |
| Telecom Power Supplies | Renewable Energy Inverters |
|
Use Scenario: Input-stage protection of 48 V telecom rectifiers subjected to lightning-induced surges on AC input lines. IC Role / Device Role / Timing Role: Primary TVS on DC output rail, coordinated with upstream MOVs to divert >1 kV transients before reaching DC-DC converters. Use Value: Reduces field failure rate of isolated flyback controllers by limiting coupled surge voltage to <150 V. |
Use Scenario: DC-link protection in solar string inverters where PV array voltage reaches up to 90 V under STC conditions. IC Role / Device Role / Timing Role: Unidirectional clamping device across MPPT converter input to suppress voltage reversal during rapid cloud transients. Use Value: Extends electrolytic capacitor lifetime by eliminating repeated 120 V+ overshoot events during partial shading recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90AHM3/5B | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and thermal performance. | No functional difference; selected only when halogen-free compliance is mandated by OEM environmental policy. | Choose SMBJ90AHM3/5B if RoHS + halogen-free certification (IEC 61249-2-21) is contractually required. |
| SMCJ90AHE3/5B | Same VWM/VBR/VC, but in larger SMC (DO-214AB) package; rated for 1500 W PPPM and 10.3 A IPPM. | Used where higher surge margin is needed (e.g., outdoor telecom cabinets), but requires PCB layout change due to 7.11 mm length. | Choose SMCJ90AHE3/5B only when system-level surge testing exceeds 600 W - not a drop-in replacement. |
Compared with SMBJ90AHE3/5B, SMBJ90AHM3/5B offers identical protection performance with halogen-free materials, while SMCJ90AHE3/5B delivers 2.5× higher surge capacity at the cost of larger footprint and revised layout - neither is pin-compatible, but both serve overlapping overvoltage suppression roles in industrial and automotive designs.
Availability
SMBJ90AHE3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and renewable energy inverters requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMBJ90AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in space-constrained, high-reliability environments - targeting automotive, industrial, and telecom systems where consistent clamping performance and qualification rigor are mandatory.
FAQ
What is the clamping voltage of SMBJ90AHE3/5B at its rated peak pulse current?
The SMBJ90AHE3/5B has a maximum clamping voltage (VC) of 146 V at its rated peak pulse current of 4.1 A using the 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ90AHE3/5B maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBJ90AHE3/5B suitable for automotive applications?
Yes, SMBJ90AHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It meets stringent stress-test requirements including high-temperature reverse bias, temperature cycling, and mechanical shock - making it appropriate for body control modules, infotainment power rails, and ADAS sensor interfaces. The SMBJ90AHE3/5B also complies with JESD22-A108 and J-STD-020 MSL Level 1 standards for reflow compatibility.
What does the "5B" in SMBJ90AHE3/5B indicate?
The "5B" in SMBJ90AHE3/5B specifies the packaging format: 13-inch diameter plastic tape and reel containing 3200 units. This differs from "52", which denotes 7-inch reels of 750 units. The "HE3" portion confirms RoHS-compliant construction and AEC-Q101 qualification, while "SMBJ90A" identifies the 90 V standoff voltage, unidirectional polarity, and SMB package. All elements are defined in Vishay's official ordering information table.
How does SMBJ90AHE3/5B compare to bidirectional variants like SMBJ90CAHE3/5B?
SMBJ90AHE3/5B is unidirectional and intended for DC line protection where polarity is fixed, whereas SMBJ90CAHE3/5B is bidirectional and suited for AC or floating signal lines. The unidirectional SMBJ90AHE3/5B exhibits lower leakage (<1 µA at 90 V) and higher surge current capability in one direction, while the bidirectional version provides symmetrical clamping but with doubled leakage at low VWM. They share identical package, thermal specs, and AEC-Q101 status - selection depends strictly on circuit topology.
What is the thermal resistance of SMBJ90AHE3/5B, and how does it affect layout?
The SMBJ90AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimal copper area; increasing pad size or adding internal ground planes reduces RθJA and improves surge endurance. Layout must maintain ≥0.155" (3.94 mm) pad length and avoid solder mask dams over thermal pads to ensure reliable heat dissipation during repetitive transients.
SMBJ90AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ90AHE3/5B FAQ
1.How can I place an order for SMBJ90AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90AHE3/5B 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 SMBJ90AHE3/5B reliable?
The price and inventory of SMBJ90AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ90AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90AHE3/5B?
SMBJ90AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90AHE3/5B 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 SMBJ90AHE3/5B?
For technical support, including SMBJ90AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90AHE3/5B requirements.
6.How does Aetrix verify that SMBJ90AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ90AHE3/5B 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 SMBJ90AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ90AHE3/5B?
All SMBJ90AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90AHE3/5B, 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 SMBJ90AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ90AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90AHE3/5B Tags
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