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Vishay General Semiconductor - Diodes Division SMBJ90A-M3/52
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- Part No.:
- SMBJ90A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90A-M3/52.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,952
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Product details
Overview
SMBJ90A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. 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, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives to safeguard MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SMBJ90A-M3/52 datasheet, SMBJ90A-M3/52 pinout, SMBJ90A-M3/52 application, or SMBJ90A-M3/52 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, and precise mechanical footprint data aligned with J-STD-020 MSL Level 1 reflow requirements.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, conducting only when reverse voltage exceeds VBR (100–111 V), with cathode-band polarity marking. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while glass-passivated junction construction guarantees stable leakage (<1.0 µA at 90 V) and long-term reliability under repetitive surge stress.
Thermal design is constrained by RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and TJ(max) = 150 °C, requiring layout-aware thermal relief for sustained 5.0 W steady-state dissipation. The device meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes - though SMBJ90A-M3/52 itself is commercial-grade halogen-free RoHS-compliant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 72–96 V systems. |
| VBR (min/max) | 100 V / 111 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 146 V at 4.1 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to <150 V. |
| PPPM | 600 W - Peak pulse power handling per single 10/1000 µs event; supports IEC 61000-4-5 Level 4 compliance with proper layout. |
| IFSM | 100 A - Non-repetitive 8.3 ms half-sine surge rating; protects against accidental short-circuit energy in power supply outputs. |
| TJ(max) | 150 °C - Maximum junction temperature; sets upper limit for ambient + self-heating in enclosed enclosures. |
| Package | SMB (DO-214AA) - 0.220" × 0.155" footprint with 0.086" lead spacing; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or return path; forms current loop during clamping events. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 90 V rail); conducts avalanche current when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-event suppression of high-energy transients without degradation, supporting industrial IEC 61000-4-5 testing. |
| 146 V clamping voltage at 4.1 A | Keeps protected MOSFETs or controllers below absolute maximum ratings during 1 kV/500 A surge events. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance for global electronics markets without compromising surge robustness. |
| 100 °C/W junction-to-ambient thermal resistance | Guides PCB copper area allocation: 0.2" × 0.2" pads per terminal required to maintain TJ ≤ 150 °C at full PPPM. |
Applications
| Industrial Motor Drive Protection | Telecom DC Power Input Stage |
|---|---|
|
Use Scenario: Protecting gate driver ICs and bootstrap circuits in 3-phase inverters subjected to IGBT turn-off voltage spikes up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between high-side gate drive rail and ground, clamping transients within 1 ns. Use Value: Limits gate-source voltage to <150 V, preventing oxide rupture in 200 V-rated SiC MOSFET drivers. |
Use Scenario: Safeguarding -48 V telecom rectifier outputs against lightning-induced surges entering via distribution bus. IC Role / Device Role / Timing Role: Primary-level TVS on DC output, positioned upstream of DC/DC converters and hot-swap controllers. Use Value: Absorbs 600 W pulses without failure, maintaining system uptime during outdoor cabinet surges. |
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|
Use Scenario: Shielding LIN bus transceivers and microcontroller I/O pins from load-dump transients on 12 V battery-supplied modules. IC Role / Device Role / Timing Role: Secondary protection stage after primary fuse and choke, clamping residual spikes post-filtering. Use Value: Withstands 100 A surge (8.3 ms) per ISO 7637-2 Pulse 5a, ensuring functional safety compliance. |
Use Scenario: Guarding 4–20 mA current-loop inputs in programmable logic controllers exposed to field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Series-connected TVS on loop supply line, limiting voltage across precision shunt resistors. Use Value: Maintains <1 µA leakage at 24 V, preserving 16-bit ADC accuracy without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (SnPb-free matte tin, no brominated flame retardant restriction). | Preferred for non-automotive commercial equipment where halogen content is unrestricted. | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 is unnecessary. |
| SMBJ90CA-M3/52 | Bidirectional variant: symmetric VBR = 100–111 V, same VC = 146 V, but supports AC-coupled or floating signal lines. | Required for differential bus protection (e.g., RS-485) or dual-polarity sensor interfaces. | Choose only if bidirectional clamping is needed; unidirectional SMBJ90A-M3/52 offers lower leakage in DC systems. |
Compared with SMBJ90A-E3/52, the M3 version adds halogen-free compliance without sacrificing surge capability; versus SMBJ90CA-M3/52, the unidirectional SMBJ90A-M3/52 provides tighter leakage control (<1.0 µA vs. 2× ID for bidirectional types below 10 V VWM) in grounded DC applications.
Availability
SMBJ90A-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and PLC analog input stages requiring stable component supply with full traceability and lifecycle management.
Supply support for SMBJ90A-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series was engineered for high-energy transient suppression in harsh environments, targeting industrial automation, transportation, and communications infrastructure where robustness and repeatable clamping performance are critical.
FAQ
What is the maximum clamping voltage of SMBJ90A-M3/52 under a 10/1000 µs surge?
The SMBJ90A-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 Figure 1 in Vishay Document 88392 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components remain within their absolute maximum ratings. The SMBJ90A-M3/52 maintains this clamping performance across its qualified operating temperature range.
Does SMBJ90A-M3/52 meet automotive qualification standards?
No, SMBJ90A-M3/52 is a commercial-grade halogen-free RoHS-compliant device and does not carry AEC-Q101 qualification. Vishay offers automotive variants under the HE3 and HM3 suffixes (e.g., SMBJ90AHE3_B/H), which undergo additional stress testing per AEC-Q101. The SMBJ90A-M3/52 is intended for industrial, telecom, and consumer applications where automotive qualification is not mandated. Always verify qualification status using the full ordering code before deployment in automotive ECUs.
What is the thermal resistance from junction to ambient for SMBJ90A-M3/52?
The typical junction-to-ambient thermal resistance (RθJA) of SMBJ90A-M3/52 is 100 °C/W, measured on a standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per terminal. This value assumes no additional heatsinking and directly impacts maximum allowable power dissipation at elevated ambient temperatures. For example, at TA = 70 °C, the SMBJ90A-M3/52 can safely dissipate approximately 0.8 W continuously without exceeding TJ(max) = 150 °C. PCB layout must replicate the specified pad dimensions to achieve this rating.
How does SMBJ90A-M3/52 differ from SMBJ90CA-M3/52?
SMBJ90A-M3/52 is unidirectional, with polarity marked by a cathode band and optimized for DC rail protection, while SMBJ90CA-M3/52 is bidirectional - symmetrical in both directions with no polarity marking and intended for AC or floating signal lines like RS-485 or audio interfaces. Their clamping voltages and peak power ratings are identical, but SMBJ90A-M3/52 offers lower reverse leakage (<1.0 µA at 90 V) compared to the bidirectional version's higher leakage due to dual-junction structure. Select SMBJ90A-M3/52 for grounded DC systems; choose SMBJ90CA-M3/52 only when bidirectional clamping is functionally required.
What is the surge current rating for SMBJ90A-M3/52 at 8.3 ms?
The SMBJ90A-M3/52 has a peak forward surge current (IFSM) rating of 100 A for a single 8.3 ms half-sine waveform, applicable only to unidirectional operation. This rating reflects its ability to survive high-energy, short-duration faults such as accidental output shorts in DC power supplies. It is distinct from the 10/1000 µs peak pulse current (IPPM = 4.1 A) used for transient suppression. The SMBJ90A-M3/52 must be oriented with cathode toward the protected line to utilize this surge capability correctly.
SMBJ90A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ90A-M3/52 FAQ
1.How can I place an order for SMBJ90A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90A-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 SMBJ90A-M3/52 reliable?
The price and inventory of SMBJ90A-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 SMBJ90A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ90A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90A-M3/52?
SMBJ90A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90A-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 SMBJ90A-M3/52?
For technical support, including SMBJ90A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90A-M3/52 requirements.
6.How does Aetrix verify that SMBJ90A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ90A-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 SMBJ90A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ90A-M3/52?
All SMBJ90A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90A-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 SMBJ90A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ90A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90A-M3/52 Tags
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