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Vishay General Semiconductor - Diodes Division SMBJ90CAHM3_A/I
- Part No.:
- SMBJ90CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAHM3_A/I.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,247
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Product details
Overview
SMBJ90CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. 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 (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It is used to protect MOSFETs, ICs, and sensor signal lines in industrial motor drives and telecom power interfaces.
For engineers reviewing the SMBJ90CAHM3_A/I datasheet, SMBJ90CAHM3_A/I pinout, SMBJ90CAHM3_A/I application, or SMBJ90CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical reverse/forward conduction behavior due to its bidirectional architecture. Its glass-passivated junction enables fast response (<1 ps) to transients induced by inductive switching or lightning surges, while maintaining low incremental surge resistance for stable clamping under repetitive 0.01% duty cycle pulses.
The SMBJ90CAHM3_A/I is rated for continuous operation from –55 °C to +150 °C junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum steady-state reverse voltage before clamping begins; defines operating margin below breakdown |
| VBR (min) | 100 V at 1 mA - Guaranteed minimum breakdown threshold ensures reliable activation above system operating voltage |
| VC (max) | 146 V at 4.1 A - Peak clamped voltage during 10/1000 µs transient; determines protected circuit's maximum stress level |
| PPPM | 600 W - Peak pulse power handling capacity under standardized surge waveform; defines single-event energy absorption limit |
| IPPM | 4.1 A - Corresponding peak current at VC; used to size series impedance and verify coordination with upstream fusing |
| TJ max | +150 °C - Maximum junction temperature rating; supports high-ambient deployments in enclosed industrial enclosures |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs derating above 25 °C |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 1.52 mm lead spacing and matte tin-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; symmetric with cathode in bidirectional mode | Enables clamping in both voltage polarities without external orientation constraints |
| Cathode | Current exit point in forward bias; electrically identical to anode for bidirectional operation | Eliminates need for polarity-aware board layout; simplifies routing on dual-rail or AC-coupled signal lines |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Provides symmetrical overvoltage protection on AC lines, differential buses, or floating sensor interfaces without polarity dependency |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay coil decay or ESD events while maintaining sub-150 V clamping ceiling |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC specification |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for industrial and automotive end equipment without compromising surge performance |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing circuits against inductive kickback from IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across DC bus or signal inputs to limit transient excursions. Use Value: Prevents latch-up or permanent damage to isolated gate drivers by limiting voltage spikes to ≤146 V during 4.1 A surges. |
Use Scenario: Surge suppression on -48 V DC telecom power distribution rails exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input stage of DC-DC converters and line cards. Use Value: Maintains rail integrity during 600 W transients without derating adjacent components due to low Rsurge. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary-level TVS on low-voltage signal paths downstream of primary protection. Use Value: AEC-Q101 qualification ensures survivability through 1000+ thermal cycles and vibration profiles required for under-hood use. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) bidirectional clamp on 4–20 mA or 0–10 V output lines. Use Value: Clamps transients to ≤146 V while introducing negligible signal distortion due to minimal junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CAHE3_A/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial-grade industrial controls where automotive reliability is not mandated | Select when cost sensitivity outweighs halogen-free or automotive qualification requirements |
| SMAJ90CAHM3_A/I | Lower 400 W PPPM, higher VC (150 V), same VWM/VBR; SMA package (smaller footprint, higher RθJA) | Applicable where space is constrained and surge energy is limited to ≤400 W | Choose only if board area is critical and worst-case surge energy remains within 400 W margin |
Compared with SMBJ90CAHE3_A/I, the SMBJ90CAHM3_A/I adds halogen-free construction and AEC-Q101 validation-critical for automotive Tier 1 suppliers-while the SMAJ90CAHM3_A/I trades 33% lower surge capacity and reduced thermal performance for 30% smaller PCB area.
Availability
SMBJ90CAHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, automotive body control modules, and industrial sensor signal conditioning requiring stable component supply across extended production lifecycles.
Supply support for SMBJ90CAHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability, high-efficiency solutions.
The SMBJ series targets robust transient suppression in harsh environments, combining high-power surge handling with automotive-qualified reliability and automated assembly compatibility.
FAQ
What is the clamping voltage of SMBJ90CAHM3_A/I at its rated peak pulse current?
The SMBJ90CAHM3_A/I has a maximum clamping voltage (VC) of 146 V at 4.1 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ90CAHM3_A/I maintains this clamping performance across its full operating temperature range.
Is SMBJ90CAHM3_A/I suitable for automotive applications?
Yes, SMBJ90CAHM3_A/I is AEC-Q101 qualified, as indicated by the "HM3" suffix, and validated for automotive-grade reliability including temperature cycling, mechanical shock, and humidity exposure. It is approved for use in body control modules, infotainment power supplies, and LIN/CAN interface protection where transient immunity and long-term stability are required. The SMBJ90CAHM3_A/I meets all stress test requirements defined in the AEC-Q101 standard.
How does the bidirectional configuration of SMBJ90CAHM3_A/I affect PCB layout?
The SMBJ90CAHM3_A/I has no polarity marking and functions identically in both voltage polarities, eliminating orientation constraints during placement. This allows direct integration across AC-coupled lines, differential pairs, or floating sensor outputs without directional verification. The SMBJ90CAHM3_A/I simplifies layout by removing the need for silkscreen indicators or automated vision alignment checks for cathode band positioning.
What is the thermal resistance of SMBJ90CAHM3_A/I, and how does it impact power derating?
The SMBJ90CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value requires linear derating of its 5.0 W steady-state power dissipation above 25 °C ambient-e.g., to ~3.5 W at 65 °C ambient. The SMBJ90CAHM3_A/I's RθJA is specified under JEDEC-standard conditions and must be verified with actual board layout and copper coverage.
Does SMBJ90CAHM3_A/I meet lead-free reflow requirements?
Yes, SMBJ90CAHM3_A/I is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, fully compatible with standard lead-free soldering processes. Its matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability specifications, and the device passes JESD201 Class 2 whisker resistance testing. The SMBJ90CAHM3_A/I requires no pre-baking and can be placed directly into reflow ovens using industry-standard profiles.
SMBJ90CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ90CAHM3_A/I FAQ
1.How can I place an order for SMBJ90CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAHM3_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 SMBJ90CAHM3_A/I reliable?
The price and inventory of SMBJ90CAHM3_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 SMBJ90CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ90CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAHM3_A/I?
SMBJ90CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAHM3_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 SMBJ90CAHM3_A/I?
For technical support, including SMBJ90CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ90CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAHM3_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 SMBJ90CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ90CAHM3_A/I?
All SMBJ90CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAHM3_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 SMBJ90CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ90CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CAHM3_A/I Tags
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