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Vishay General Semiconductor - Diodes Division SMBJ90AHM3_B/I
- Part No.:
- SMBJ90AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90AHM3_B/I.pdf
- Description:
- 600W,90V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,547
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Product details
Overview
SMBJ90AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 90 V stand-off 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 a 10/1000 µs waveform - deployed on ICs, MOSFETs, and sensor signal lines in industrial and telecom systems.
For engineers reviewing the SMBJ90AHM3_B/I datasheet, SMBJ90AHM3_B/I pinout, SMBJ90AHM3_B/I application, or SMBJ90AHM3_B/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and real-world protection use cases - critical for surge immunity validation in automotive-grade and high-reliability embedded designs.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior under transient stress. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD and surge events per IEC 61000-4-2/4-5 standards.
The SMBJ90AHM3_B/I is halogen-free and RoHS-compliant (HM3 suffix), qualified to AEC-Q101 for automotive applications, and rated for operation from –55 °C to +150 °C junction temperature. It is mounted on 0.2" × 0.2" copper pads and meets MSL level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR (min) | 100 V at IT = 1 mA - Minimum voltage at which avalanche conduction initiates; ensures reliable turn-on during overvoltage events. |
| VC (max) | 146 V at IPPM = 4.1 A - Maximum clamped voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability with 10/1000 µs waveform; determines survivability under standardized surge tests. |
| ID (max) | 1.0 µA at VWM - Reverse leakage current at stand-off voltage; low value minimizes standby power loss and false triggering. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood or high-ambient industrial environments. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; informs derating requirements above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line. | When used in unidirectional configuration, anode connects to ground or return path - enabling clamping only during positive transients on cathode side. |
| Cathode | Current exit terminal in forward bias; marked with band; connects to protected signal/power line. | Acts as the "input" node for transient energy; clamps voltage to VC when line voltage exceeds VBR relative to anode reference. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and surge endurance - suitable for ADAS and powertrain ECUs. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events on 50 Ω source impedance without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during clamping - critical for protecting 100 V-rated MOSFETs and isolated gate drivers. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with high-volume automated assembly at 260 °C peak. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for export-controlled and green-design programs without sacrificing surge performance. |
Applications
| Industrial Motor Drives | Automotive Power Distribution Units |
|---|---|
|
Use Scenario: Protecting gate driver ICs and high-side MOSFETs from inductive kickback during PWM switching in 48 V BLDC motor controllers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate and source, clamping negative-going transients to prevent gate oxide rupture. Use Value: Limits gate-source voltage to ≤146 V during 600 W surge events, preserving MOSFET integrity across >100,000 switching cycles. |
Use Scenario: Safeguarding CAN FD transceiver supply rails and data lines against load dump and jump-start transients in battery management modules. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V/24 V rail input, triggered only during >90 V excursions to avoid interference with normal operation. Use Value: Clamps 12 V rail to <146 V within nanoseconds during ISO 7637-2 Pulse 5a (load dump), preventing regulator latch-up and data corruption. |
| Telecom Base Station Power Supplies | Industrial Sensor Signal Conditioning |
|
Use Scenario: Shielding DC-DC converter inputs in remote radio units from lightning-induced surges on outdoor power feeds. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V input bus, coordinated with upstream MOVs and downstream fuses for staged protection. Use Value: Absorbs up to 600 W of transient energy while maintaining <1 µA leakage at nominal 48 V - no impact on efficiency or standby current. |
Use Scenario: Protecting analog front-end inputs of pressure/temperature sensors in factory automation PLCs exposed to relay coil transients. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 40 pF typical) on 0–10 V or 4–20 mA signal lines, minimizing signal distortion. Use Value: Clamps fast-rising spikes (<1 ns rise time) to <146 V without adding measurable noise or phase shift to millivolt-level sensor outputs. |
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_B/I | Same electrical specs (VWM = 90 V, VC = 146 V), but RoHS-compliant without halogen-free certification (E3 vs HM3). | Approved for commercial/industrial use; not AEC-Q101 qualified - unsuitable for automotive production. | Select SMBJ90AHE3_B/I only if halogen-free requirement is waived and automotive qualification is unnecessary. |
| SMAJ90AHE3/A/H | Lower PPPM (400 W), higher RθJA (150 °C/W), SMA (DO-214AC) package - smaller footprint but reduced thermal mass and surge capacity. | Limited to lower-energy transients; not recommended for 48 V+ systems or automotive load dump scenarios. | Choose SMAJ90AHE3/A/H only for space-constrained consumer devices where 400 W surge rating suffices and AEC-Q101 is not required. |
Compared with SMBJ90AHE3_B/I, the SMBJ90AHM3_B/I adds halogen-free compliance and AEC-Q101 qualification without trade-offs in clamping performance or thermal design - making it the preferred choice for automotive and green-design industrial deployments. Against SMAJ90AHE3/A/H, it delivers 50 % higher surge power handling and superior thermal robustness in the same functional category.
Availability
SMBJ90AHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution units, telecom base station power supplies, and industrial sensor signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ90AHM3_B/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness, AEC-Q101 compliance, and precise clamping control are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ90AHM3_B/I at its rated peak pulse current?
The SMBJ90AHM3_B/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 - critical for ensuring compatibility with downstream 100 V-rated components. The SMBJ90AHM3_B/I maintains this clamping performance across its full operating temperature range.
Is SMBJ90AHM3_B/I suitable for automotive applications?
Yes, SMBJ90AHM3_B/I is AEC-Q101 qualified and specifically designated for automotive use via the HM3 suffix and underscore-B/I packaging code. It undergoes rigorous stress testing including temperature cycling, humidity bias, and surge endurance - meeting requirements for engine control units, battery management systems, and ADAS power domains. Its halogen-free composition and MSL Level 1 rating further support automotive manufacturing processes.
How does the SMBJ90AHM3_B/I differ from the SMBJ90AHE3_B/I variant?
The SMBJ90AHM3_B/I and SMBJ90AHE3_B/I share identical electrical specifications (VWM = 90 V, VC = 146 V, PPPM = 600 W) and mechanical form factor, but differ in material compliance: HM3 denotes halogen-free and RoHS-compliant construction, while E3 is RoHS-compliant only. Crucially, HM3 variants are AEC-Q101 qualified; E3 variants are not. Therefore, SMBJ90AHM3_B/I is required for automotive production, whereas SMBJ90AHE3_B/I serves commercial/industrial roles.
What is the thermal resistance of SMBJ90AHM3_B/I, and how does it affect layout design?
The SMBJ90AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts power derating: at 75 °C ambient, its usable peak pulse power drops to ~420 W. Designers must allocate adequate copper area and consider thermal vias if operating near thermal limits - especially in sealed enclosures or high-density layouts where airflow is restricted.
Does SMBJ90AHM3_B/I have polarity marking, and how is it oriented in circuit?
Yes, SMBJ90AHM3_B/I is a unidirectional TVS diode with polarity explicitly marked by a cathode band on the device body. In circuit implementation, the cathode connects to the line being protected (e.g., 48 V rail or signal trace), and the anode connects to ground or the reference plane. This orientation ensures clamping occurs only during positive transients relative to ground - preventing unintended conduction during normal reverse-biased operation.
SMBJ90AHM3_B/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:
- 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:
- 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_B/I FAQ
1.How can I place an order for SMBJ90AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90AHM3_B/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_B/I reliable?
The price and inventory of SMBJ90AHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ90AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90AHM3_B/I?
SMBJ90AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90AHM3_B/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_B/I?
For technical support, including SMBJ90AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ90AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ90AHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ90AHM3_B/I?
All SMBJ90AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90AHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for SMBJ90AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90AHM3_B/I Tags
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