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Vishay General Semiconductor - Diodes Division SMBJ90CA-M3/5B
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- Part No.:
- SMBJ90CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CA-M3/5B.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,066
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Product details
Overview
SMBJ90CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power 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 (IPPM), and 600 W peak pulse power dissipation with 10/1000 µs waveform - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ90CA-M3/5B datasheet, SMBJ90CA-M3/5B pinout, SMBJ90CA-M3/5B application, or SMBJ90CA-M3/5B equivalent, this device serves as a halogen-free, RoHS-compliant TVS solution for bidirectional surge suppression where precise clamping voltage, low leakage (<1.0 µA at VWM), and AEC-Q101-qualified variants are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical electrical characteristics in forward and reverse directions per ANSI/IEEE C62.35 standards. Its glass-passivated junction enables fast response time (<1.0 ns), low incremental surge resistance, and stable clamping under repetitive 0.01% duty-cycle surges.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets MSL level 1 per J-STD-020 and is qualified to AEC-Q101 when ordered with HE3/HM3 suffixes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (min) | 100 V at 1.0 mA test current - Guaranteed minimum breakdown threshold ensures reliable turn-on during overvoltage events. |
| VC (max) | 146 V at IPPM = 4.1 A - Peak clamped voltage limits stress on downstream ICs during 10/1000 µs transients. |
| IPPM | 4.1 A - Peak surge current capability with 10/1000 µs waveform; determines transient energy handling (600 W). |
| ID (max) | 1.0 µA at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max | +150 °C - High junction temperature rating supports operation in thermally demanding industrial and automotive environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint, optimized for automated placement and reflow. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; symmetrical terminals suitable for AC-coupled or floating-line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional conduction path | Either terminal functions identically as anode or cathode depending on transient polarity; no DC bias dependency. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating in standard PCB layouts. |
| Clamping voltage ≤146 V at 4.1 A | Provides ≥14 V design margin below typical 160 V absolute maximum ratings of industrial RS-485 transceivers. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and supports environmentally regulated industrial OEM programs. |
| MSL Level 1, 260 °C reflow compatible | Eliminates moisture sensitivity concerns and allows single-pass lead-free reflow without baking or special handling. |
| Low leakage (≤1.0 µA at 90 V) | Prevents signal distortion on high-impedance analog sensor inputs and avoids false triggering in precision measurement circuits. |
Applications
| Industrial Sensor Signal Lines | Telecom Data Line Protection |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop sensors and analog voltage outputs from ESD and inductive switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential sensor output pins or between signal and ground. Use Value: Limits transient voltage to ≤146 V while maintaining <1.0 µA leakage, preserving 16-bit ADC accuracy and preventing microcontroller reset. |
Use Scenario: Surge suppression on T1/E1 interface lines and xDSL front-end circuits exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary line-side TVS in series with gas discharge tube (GDT) for coordinated two-stage telecom protection. Use Value: Fast <1 ns response captures initial surge edge; 600 W rating handles 10/1000 µs waveforms per ITU-T K.20/21 without degradation. |
| Automotive Body Control Modules | Power Supply Input Rails |
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from load dump and ISO 7637-2 Pulse 1/2a transients. IC Role / Device Role / Timing Role: Secondary TVS parallel to primary input filter capacitor on 12 V supply rail feeding body control ICs. Use Value: Clamps to 146 V within nanoseconds, limiting voltage overshoot below 160 V IC absolute maximum ratings during 100 V/50 ms load dump events. |
Use Scenario: Input-stage transient suppression on 24 V industrial PLC power supplies subjected to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Bidirectional shunt protector across unregulated DC input prior to buck converter stage. Use Value: Symmetric clamping prevents reverse-bias damage during negative-going transients; 90 V VWM aligns with 24 V nominal ±20 % tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA-E3/5B | RoHS-compliant but not halogen-free; same electrical specs and SMB package. | No difference in circuit function; used where halogen-free compliance is not mandated by end-equipment standards. | Select SMBJ90CA-E3/5B for cost-sensitive commercial applications without halogen restrictions. |
| SMAJ90CA-M3 | Lower 400 W peak pulse power; SMA package (smaller footprint, higher thermal resistance). | Reduced surge handling margin; unsuitable for IEC 61000-4-5 Level 4 or high-energy industrial transients. | Choose SMAJ90CA-M3 only for space-constrained designs with verified lower surge exposure. |
Compared with SMBJ90CA-M3/5B, SMBJ90CA-E3/5B offers identical protection performance without halogen-free assurance, while SMAJ90CA-M3 trades 33 % lower pulse power and inferior thermal performance for smaller board area - making SMBJ90CA-M3/5B optimal for high-reliability industrial and automotive surge zones.
Availability
SMBJ90CA-M3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and automotive body control modules requiring stable component supply, halogen-free compliance, and repeatable surge immunity performance.
Supply support for SMBJ90CA-M3/5B 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, 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 industrial automation, telecom infrastructure, and automotive electronics where consistent clamping, low leakage, and long-term stability are mandatory.
FAQ
What is the clamping voltage of SMBJ90CA-M3/5B at its rated peak pulse current?
The SMBJ90CA-M3/5B 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 SMBJ90CA-M3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ90CA-M3/5B suitable for bidirectional AC signal line protection?
Yes, SMBJ90CA-M3/5B is explicitly designed for bidirectional applications, as indicated by the "CA" suffix. Its symmetrical breakdown and clamping characteristics apply equally in both polarities, making it ideal for protecting AC-coupled data lines such as RS-485, CAN, or audio interfaces. No polarity marking is present on the SMB package, confirming its bidirectional functionality.
Does SMBJ90CA-M3/5B meet automotive qualification standards?
The base SMBJ90CA-M3/5B is commercial-grade and halogen-free but not AEC-Q101 qualified. However, Vishay offers AEC-Q101-qualified versions under ordering codes SMBJ90CAHM3_B/I or SMBJ90CAHM3_B/H, which share identical electrical parameters and SMB packaging. For automotive use, specify the HM3 suffix with appropriate revision code to obtain the qualified variant of SMBJ90CA-M3/5B.
What is the maximum reverse leakage current for SMBJ90CA-M3/5B at its working voltage?
The SMBJ90CA-M3/5B 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 ultra-low leakage ensures minimal impact on high-impedance sensor nodes and precision analog circuits, preserving signal fidelity and reducing standby power consumption in battery-operated systems using SMBJ90CA-M3/5B.
How does the SMB package of SMBJ90CA-M3/5B compare to SMA in terms of thermal performance?
The SMB (DO-214AA) package used by SMBJ90CA-M3/5B provides lower thermal resistance than the smaller SMA (DO-214AC) package - with typical RθJA of 100 °C/W versus ~140 °C/W for SMA. This enables SMBJ90CA-M3/5B to sustain higher average power dissipation and maintain lower junction temperatures under repeated surge conditions, directly enhancing long-term reliability in thermally constrained industrial PCB layouts.
SMBJ90CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ90CA-M3/5B FAQ
1.How can I place an order for SMBJ90CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CA-M3/5B 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 SMBJ90CA-M3/5B reliable?
The price and inventory of SMBJ90CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ90CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CA-M3/5B?
SMBJ90CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CA-M3/5B 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 SMBJ90CA-M3/5B?
For technical support, including SMBJ90CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ90CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ90CA-M3/5B 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 SMBJ90CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ90CA-M3/5B?
All SMBJ90CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CA-M3/5B, 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 SMBJ90CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ90CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CA-M3/5B Tags
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