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Vishay General Semiconductor - Diodes Division SMBJ90CA-M3/52
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- Part No.:
- SMBJ90CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CA-M3/52.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,119
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Product details
Overview
SMBJ90CA-M3/52 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 power and signal lines. It features a 90 V standoff voltage (VWM), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), protecting MOSFETs and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ90CA-M3/52 datasheet, SMBJ90CA-M3/52 pinout, SMBJ90CA-M3/52 application, or SMBJ90CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, low thermal resistance (RθJL = 20 °C/W), halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional structure, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), critical for suppressing ESD and inductive switching spikes.
The device is rated for repetitive surge duty cycle of 0.01 % and derates linearly above 25 °C ambient per Fig. 2, with maximum junction temperature of +150 °C and thermal resistance junction-to-lead of 20 °C/W - supporting reliable operation under pulsed overvoltage stress in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR min / max | 100 V / 111 V at 1 mA test current - Confirmed breakdown threshold window ensuring predictable turn-on during transients. |
| VC @ IPPM | 146 V at 4.1 A - Clamped voltage seen by downstream components during 10/1000 µs surge; limits stress on ICs and MOSFETs. |
| PPPM | 600 W - Peak pulse power handling capacity; enables robust protection against lightning-induced surges and load dump events. |
| IPPM | 4.1 A - Peak surge current supported under standard 10/1000 µs waveform; determines minimum series impedance required for full rating. |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance allows efficient heat transfer to PCB copper, sustaining repetitive surge performance. |
| TJ max | +150 °C - Maximum allowable junction temperature; supports operation in high-ambient environments like motor drives and telecom equipment. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either direction; connects to line being protected (e.g., RS-485 A/B or DC bus). |
| Cathode | Transient current entry (bidirectional) | Completes symmetrical conduction path; ties to common reference (GND or return rail) with low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating buses without external polarity management or dual-diode arrangements. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) when paired with appropriate series impedance. |
| Low RθJL = 20 °C/W | Permits higher surge repetition rates and improved thermal recovery between events in space-constrained industrial modules. |
| Halogen-free, RoHS-compliant (M3) | Fulfills environmental compliance requirements for global industrial and automotive supply chains without compromising surge rating. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning or special handling. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and current-sense amplifiers against inductive kickback from relay coils and solenoid loads. IC Role / Device Role: Bidirectional TVS placed across power rails and low-voltage control inputs. Use Value: Limits transient voltage to ≤146 V, preventing latch-up or permanent damage to 12 V logic-level ICs and MOSFETs. |
Use Scenario: Surge suppression on LIN bus lines exposed to battery transients and load dump conditions. IC Role / Device Role: Line-to-ground TVS on bidirectional serial communication nodes. Use Value: Maintains signal integrity below LIN specification thresholds while surviving ISO 7637-2 Pulse 1 and Pulse 2a events. |
| Telecom Power Supplies | Industrial Sensor Interfaces |
|
Use Scenario: Input-stage protection of 48 V DC-DC converters subjected to lightning-induced surges on PoE or remote power feeds. IC Role / Device Role: Primary clamping device upstream of input filter and controller IC. Use Value: Absorbs up to 600 W surge energy without degradation, preserving converter startup reliability and MTBF. |
Use Scenario: Protection of analog front-ends (e.g., RTD, thermocouple inputs) connected to long cables in factory automation. IC Role / Device Role: Differential and common-mode TVS on sensor signal pairs referenced to chassis ground. Use Value: Prevents offset drift and ADC saturation caused by ESD or EFT bursts, maintaining ±0.1 % measurement accuracy. |
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-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3). | Preferred where halogen-free requirement is absent; identical footprint and thermal performance. | Select E3/52 for cost-sensitive commercial designs without halogen restrictions. |
| SMAJ90CA-M3 | Lower peak pulse power (400 W vs 600 W); same VWM/VC, but smaller SMA package (DO-214AC). | Suitable only for lower-energy transients; limited thermal mass reduces surge repetition capability. | Choose SMAJ90CA-M3 only if board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 2. |
Compared with SMBJ90CA-M3/52, the E3/52 alternative offers identical protection performance with standard RoHS compliance, while SMAJ90CA-M3 trades 33 % lower pulse power for 30 % smaller footprint - requiring careful system-level surge margin analysis before substitution.
Availability
SMBJ90CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, halogen-free compliance, and repeatable surge immunity validation.
Supply support for SMBJ90CA-M3/52 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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The SMBJ series was developed for high-energy transient suppression in harsh environments, targeting industrial, automotive, and telecom applications where consistent clamping performance and AEC-Q101 readiness are essential.
FAQ
What is the clamping voltage of SMBJ90CA-M3/52 under a 10/1000 µs surge?
The SMBJ90CA-M3/52 exhibits a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current of 4.1 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that downstream components experience no more than 146 V during such transients - a critical parameter for safeguarding 100 V-rated MOSFETs and interface ICs. The SMBJ90CA-M3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ90CA-M3/52 suitable for automotive applications?
SMBJ90CA-M3/52 is halogen-free and RoHS-compliant but not AEC-Q101 qualified in this specific ordering variant. For automotive use, Vishay offers the HM3-suffixed version (e.g., SMBJ90CAHM3_B/H), which carries AEC-Q101 qualification. The SMBJ90CA-M3/52 remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated, such as infotainment power rails or lighting control - provided system-level validation confirms robustness under ISO 7637-2 stress conditions.
How does the bidirectional nature of SMBJ90CA-M3/52 affect PCB layout?
The SMBJ90CA-M3/52 has no polarity marking and conducts identically in both directions, eliminating orientation constraints during placement. This simplifies layout for differential or AC-coupled lines (e.g., RS-485, CAN FD, or audio paths), as it can be mounted without regard to anode/cathode alignment. However, low-inductance grounding remains essential: both terminals must connect to short, wide copper pours tied to a solid reference plane to ensure sub-nanosecond response and avoid voltage overshoot during fast transients. The SMBJ90CA-M3/52 benefits from symmetric pad geometry per Vishay's recommended 0.2" × 0.2" mounting layout.
What is the thermal resistance of SMBJ90CA-M3/52, and why does it matter?
The SMBJ90CA-M3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, significantly lower than junction-to-ambient (RθJA = 100 °C/W). This means most heat generated during surge events transfers directly into the PCB copper via the leads - not into ambient air. In practice, this allows the SMBJ90CA-M3/52 to sustain higher surge repetition rates and recover faster between events, especially when mounted on generous copper areas. Designers leverage this by connecting both terminals to internal ground/power planes to maximize thermal dissipation and prevent localized overheating.
Can SMBJ90CA-M3/52 replace unidirectional TVS diodes in existing designs?
SMBJ90CA-M3/52 can replace unidirectional variants (e.g., SMBJ90A-M3/52) only if the circuit topology supports bidirectional clamping - such as across floating signal pairs, AC lines, or symmetric power rails. It must not be used where DC bias polarity is critical (e.g., cathode-tied-to-rail configurations), as its symmetrical structure lacks inherent polarity. When substituting, verify that the protected node does not rely on forward conduction for normal operation and that clamping occurs within acceptable voltage margins in both directions. The SMBJ90CA-M3/52 provides identical VWM, VC, and PPPM ratings as its unidirectional counterpart, but its dual-path conduction changes failure mode behavior under sustained overvoltage.
SMBJ90CA-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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-M3/52 FAQ
1.How can I place an order for SMBJ90CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CA-M3/52 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 SMBJ90CA-M3/52 reliable?
The price and inventory of SMBJ90CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ90CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CA-M3/52?
SMBJ90CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CA-M3/52 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 SMBJ90CA-M3/52?
For technical support, including SMBJ90CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ90CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ90CA-M3/52 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 SMBJ90CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ90CA-M3/52?
All SMBJ90CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CA-M3/52, 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 SMBJ90CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ90CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CA-M3/52 Tags
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