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Vishay General Semiconductor - Diodes Division SMBJ90AHE3/52
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- Part No.:
- SMBJ90AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90AHE3/52.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,296
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Product details
Overview
SMBJ90AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and lightning-induced surges on power and signal lines. It features 90 V standoff voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the SMBJ90AHE3/52 datasheet, SMBJ90AHE3/52 pinout, SMBJ90AHE3/52 application, or SMBJ90AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR = 100–111 V). Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while the glass-passivated junction enables stable performance under repetitive surge stress.
The SMBJ90AHE3/52 is rated for 600 W peak pulse power (10/1000 µs), supports 100 A non-repetitive forward surge current (IFSM), and maintains clamping integrity up to 150 °C junction temperature. Its matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 90 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping onset. |
| VBR (Breakdown Voltage) | 100–111 V at 1 mA - Confirmed avalanche initiation range; ensures reliable turn-on above system nominal voltage. |
| VC (Clamping Voltage) | 146 V at IPPM = 4.1 A - Peak voltage seen by protected IC/MOSFET during worst-case 10/1000 µs surge; limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized 10/1000 µs surge without failure; validates robustness against IEC 61000-4-5 Level 3/4 threats. |
| TJ max. | +150 °C - Enables operation in under-hood automotive and high-ambient industrial environments without derating. |
| Package | SMB (DO-214AA) - Surface-mount footprint (5.21 × 4.06 mm) compatible with automated placement; meets UL 94 V-0 flammability. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; suffix HE3 denotes qualification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for lead-free reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection to protected line | Reverse-biased during normal operation; conducts avalanche current to ground when transient exceeds VBR. |
| Anode | Ground reference node | Low-impedance return path for surge current; must be routed to solid ground plane with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V/24 V automotive power nets and industrial motor drives without degradation. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability - includes temperature cycling, high-temperature operating life, and ESD testing per JEDEC standards. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage exposure to protected MOSFETs or microcontrollers; critical for 100 V-rated silicon devices. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free PCB assembly processes without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 µA at 90 V) across temperature and lifetime; prevents parametric drift in harsh environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Suppressing load-dump spikes (up to 120 V) and alternator ripple on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between power rail and chassis ground, responding within <1 ns to limit voltage excursion. Use Value: Prevents latch-up or gate oxide damage in MCU power supplies and CAN transceivers by holding rail voltage ≤146 V during 600 W surges. |
Use Scenario: Protecting analog outputs (e.g., 4–20 mA current loops) and digital I/O of pressure/temperature sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) parallel clamp on signal line, grounded at controller side to divert transients away from ADC inputs. Use Value: Maintains signal integrity by limiting transient overshoot to <146 V while adding <0.5 pF parasitic capacitance - no bandwidth degradation in sub-MHz sensor interfaces. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers and DC-DC converters against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V input rail, coordinated with upstream fuses and secondary-stage TVS for staged clamping. Use Value: Absorbs 600 W surge energy without thermal runaway, enabling single-device compliance with IEC 61000-4-5 (10/1000 µs, 2 Ω source) at 48 V systems. |
Use Scenario: Clamping back-EMF spikes from brushed DC motors in washing machines, HVAC blowers, and power tools connected to microcontroller-based motor drivers. IC Role / Device Role / Timing Role: Mounted across motor terminals or driver output stage, conducting reverse avalanche current to protect MOSFET drain-source junctions. Use Value: Limits VDS stress to ≤146 V during 100 A inductive turn-off events, extending MOSFET lifetime and eliminating need for snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90AHM3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU WEEE, specific OEM specs). | Direct substitution if halogen-free content is required; no layout or validation changes needed. |
| SMCJ90AHE3/52 | Same VWM (90 V), VBR (100–111 V), and VC (146 V), but in larger SMC (DO-214AB) package with 1500 W PPPM rating and lower RθJA (50 °C/W). | Higher power handling and better thermal dissipation; suited for higher-duty-cycle or multi-pulse surge environments. | Choose when 600 W is insufficient or board space allows larger footprint; requires PCB pad redesign. |
Compared with SMBJ90AHE3/52, SMBJ90AHM3/52 offers identical protection performance with halogen-free construction, while SMCJ90AHE3/52 delivers 2.5× higher surge power capacity in a larger package - enabling extended surge endurance in thermally constrained or high-reliability applications.
Availability
SMBJ90AHE3/52 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ90AHE3/52 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 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-speed transient suppression in automotive, industrial, and telecom systems - delivering precise clamping, AEC-Q101 qualification, and robust surge immunity in compact surface-mount packages.
FAQ
What is the maximum clamping voltage of SMBJ90AHE3/52 under a 10/1000 µs surge?
The SMBJ90AHE3/52 has a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current of 4.1 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience voltage beyond this level during standardized surge events - critical for safeguarding 100 V-rated power MOSFETs and automotive MCUs.
Is SMBJ90AHE3/52 qualified for automotive applications?
Yes, SMBJ90AHE3/52 is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's official datasheet (Document Number: 88392, Revision: 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, making SMBJ90AHE3/52 suitable for under-hood and body electronics in passenger vehicles and commercial vehicles.
What is the standoff voltage (VWM) and why does it matter for SMBJ90AHE3/52?
The standoff voltage (VWM) of SMBJ90AHE3/52 is 90 V - the maximum DC or continuous reverse voltage the device can block without significant leakage current (<1 µA). This parameter defines the operational margin below clamping onset; selecting a VWM ≥110 % of system nominal voltage (e.g., 90 V for a 80 V max rail) ensures reliable blocking during normal operation while allowing headroom for ripple and tolerance.
Does SMBJ90AHE3/52 have polarity markings, and how is it oriented on the PCB?
Yes, SMBJ90AHE3/52 is unidirectional and features a cathode band marking on one end of the SMB (DO-214AA) package. During PCB layout, the banded end must connect to the line being protected (e.g., 12 V rail), while the opposite (anode) terminal connects to ground. Incorrect orientation results in forward conduction during normal operation - causing excessive leakage and potential failure.
What is the thermal resistance and maximum junction temperature of SMBJ90AHE3/52?
SMBJ90AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum operating junction temperature (TJ max.) of +150 °C. These values enable reliable operation in high-ambient environments such as engine compartments or enclosed industrial enclosures - provided PCB layout follows Vishay's recommended pad dimensions and grounding practices.
SMBJ90AHE3/52 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:
- 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)
SMBJ90AHE3/52 FAQ
1.How can I place an order for SMBJ90AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90AHE3/52 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 SMBJ90AHE3/52 reliable?
The price and inventory of SMBJ90AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ90AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90AHE3/52?
SMBJ90AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90AHE3/52 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 SMBJ90AHE3/52?
For technical support, including SMBJ90AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90AHE3/52 requirements.
6.How does Aetrix verify that SMBJ90AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ90AHE3/52 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 SMBJ90AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ90AHE3/52?
All SMBJ90AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90AHE3/52, 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 SMBJ90AHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ90AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90AHE3/52 Tags
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