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Vishay General Semiconductor - Diodes Division SMBJ90AHM3_A/I
- Part No.:
- SMBJ90AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90AHM3_A/I.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,073
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Product details
Overview
SMBJ90AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in 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, automotive body control modules, and telecom power supplies.
For engineers reviewing the SMBJ90AHM3_A/I datasheet, SMBJ90AHM3_A/I pinout, SMBJ90AHM3_A/I application, or SMBJ90AHM3_A/I equivalent, key selection criteria include clamping performance under 4.1 A surge, thermal resistance (RθJA = 100 °C/W), halogen-free RoHS compliance, AEC-Q101 qualification status, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until transient voltage exceeds VBR (100–111 V), then rapidly switches to low-impedance conduction to limit VC to ≤146 V. Its glass-passivated junction ensures stable leakage (<1.0 µA at 90 V) and fast response time (<1.0 ps).
Thermally, it sustains 150 °C maximum junction temperature with 5.0 W steady-state power dissipation at 50 °C ambient, and its RθJL of 20 °C/W enables effective heat transfer to PCB copper. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 90 V nominal systems. |
| VBR (min/max) | 100 V / 111 V at 1.0 mA - Confirmed breakdown threshold range; ensures reliable triggering above system transients but below damage thresholds. |
| VC @ IPPM | 146 V at 4.1 A (10/1000 µs) - Clamped voltage seen by protected IC/MOSFET during worst-case surge; limits stress on downstream components. |
| PPPM | 600 W - Peak transient energy handling capacity; supports repetitive surges up to 0.01% duty cycle without degradation. |
| IFSM | 100 A (8.3 ms half-sine) - Surge current withstand for unidirectional forward conduction; critical for inductive load switching events. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial enclosures without derating. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs PCB thermal design requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads. Cathode indicated by band marking on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; conducts during positive transients when cathode is at higher potential. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side (e.g., +90 V rail); avalanche conduction occurs here during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 90 V DC buses without failure. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including BCM, ADAS power domains, and infotainment supply rails per stress test requirements. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life recycling. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for sensitive gate drivers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 90 V DC bus in servo amplifier power stages against inductive kickback from H-bridge switching. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed across DC link capacitor terminals. Use Value: Limits transient voltage to ≤146 V during 100 A turn-off events, preventing IGBT gate oxide rupture and sustaining 150 °C junction temperature. |
Use Scenario: Overvoltage suppression on LIN bus power input (9–16 V nominal, but subject to load dump up to 90 V) in door module ECUs. IC Role / Device Role / Timing Role: Standoff-clamp protector on fused 90 V supply rail feeding microcontroller and driver ICs. Use Value: Withstands 600 W surges per ISO 7637-2 Pulse 5a while maintaining <1.0 µA leakage at 90 V, ensuring low quiescent current compliance. |
| Telecom Power Supplies | Renewable Energy Inverters |
|
Use Scenario: Input-stage protection of 48 V–96 V telecom rectifier modules exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-level TVS on DC output bus upstream of DC-DC converters. Use Value: Clamps 4.1 A 10/1000 µs transients to 146 V, preserving downstream SiC MOSFET gate drivers rated for 150 V absolute max. |
Use Scenario: DC-link protection in solar string inverters where PV array open-circuit voltage reaches 90 V under STC conditions. IC Role / Device Role / Timing Role: Unidirectional suppressor across DC-link capacitor bank to absorb MPPT controller switching transients. Use Value: Handles repetitive 600 W pulses at 0.01% duty cycle without parameter drift, supporting 25-year field lifetime per IEC 61215. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90AHE3_A/I | Same electrical specs, but RoHS-compliant (non-halogen-free) and AEC-Q101 qualified; no halogen restriction. | Acceptable for commercial/industrial use where halogen-free mandate does not apply; same footprint and thermal behavior. | Select when halogen content is unrestricted and cost sensitivity favors non-HM3 variant. |
| SMBJ90A-M3/5B | Identical VWM, VBR, VC, and PPPM; halogen-free and RoHS-compliant, but not AEC-Q101 qualified. | Suitable for non-automotive industrial applications; lacks automotive stress test validation (e.g., HTOL, TCT). | Choose for cost-sensitive consumer or industrial designs requiring halogen-free compliance without automotive qualification. |
Compared with SMBJ90AHM3_A/I, the HE3 variant trades halogen-free status for broader commercial availability, while the M3/5B variant omits AEC-Q101 validation - making SMBJ90AHM3_A/I the only option fully meeting automotive, halogen-free, and RoHS requirements simultaneously.
Availability
SMBJ90AHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant TVS protection.
Supply support for SMBJ90AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and power efficiency.
The SMBJ series delivers standardized 600 W TVS protection in SMB package for DC power rail and signal line hardening across automotive, industrial, and telecom markets - engineered for high-volume SMT manufacturability and thermal robustness.
FAQ
What is the clamping voltage of SMBJ90AHM3_A/I at its rated peak pulse current?
The SMBJ90AHM3_A/I has a maximum clamping voltage (VC) of 146 V at its specified peak pulse current (IPPM) of 4.1 A 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. The SMBJ90AHM3_A/I maintains this clamping performance across its full operating temperature range and after repeated surge exposures, provided derating guidelines are followed.
Is SMBJ90AHM3_A/I qualified for automotive applications?
Yes, SMBJ90AHM3_A/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix in its ordering code. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and mechanical shock - validating its suitability for automotive power domains such as body control modules and infotainment systems. The SMBJ90AHM3_A/I meets all requirements for use in non-safety-critical automotive electronics per AEC-Q101 Rev D.
What does the "HM3" suffix indicate for SMBJ90AHM3_A/I?
The "HM3" suffix in SMBJ90AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "M" signifies halogen-free materials per IEC 61249-2-21, and "3" confirms RoHS compliance. This distinguishes SMBJ90AHM3_A/I from variants like HE3 (AEC-Q101 + RoHS, but not halogen-free) or M3/5B (halogen-free + RoHS, but not AEC-Q101 qualified).
Can SMBJ90AHM3_A/I be used in bidirectional protection circuits?
No, SMBJ90AHM3_A/I is a unidirectional TVS diode, as indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias and cannot clamp positive transients on both polarities. For bidirectional protection, Vishay offers the SMBJ90CA variant (with "CA" suffix), which provides symmetrical clamping in both directions. Using SMBJ90AHM3_A/I in a bidirectional configuration would leave one polarity unprotected and may cause catastrophic failure.
What is the maximum reverse leakage current of SMBJ90AHM3_A/I at its standoff voltage?
The SMBJ90AHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated standoff voltage (VWM) of 90 V and ambient temperature of 25 °C. This low leakage ensures minimal power loss in standby mode and prevents false triggering in high-impedance sensing circuits. Leakage remains within specification up to 125 °C, with typical values well below 500 nA at 85 °C - critical for battery-powered automotive modules.
SMBJ90AHM3_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:
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ90AHM3_A/I FAQ
1.How can I place an order for SMBJ90AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90AHM3_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 SMBJ90AHM3_A/I reliable?
The price and inventory of SMBJ90AHM3_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 SMBJ90AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ90AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90AHM3_A/I?
SMBJ90AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90AHM3_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 SMBJ90AHM3_A/I?
For technical support, including SMBJ90AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ90AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ90AHM3_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 SMBJ90AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ90AHM3_A/I?
All SMBJ90AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90AHM3_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 SMBJ90AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ90AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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