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Vishay General Semiconductor - Diodes Division SMBJ54D-M3/I
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- Part No.:
- SMBJ54D-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54D-M3/I.pdf
- Description:
- TVS DIODE 54VWM 85.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,318
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Product details
Overview
SMBJ54D-M3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 54 V stand-off voltage (VWM), 60.9–65.4 V breakdown voltage (VBR) at 1 mA, 85.9 V maximum clamping voltage (VC) at 7.0 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform - deployed for overvoltage protection of DC power rails and signal lines in industrial sensor interfaces.
For engineers reviewing the SMBJ54D-M3/I datasheet, SMBJ54D-M3/I pinout, SMBJ54D-M3/I application, or SMBJ54D-M3/I equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, M3-grade halogen-free RoHS-compliant construction, and bidirectional alternative options for design flexibility in ESD and lightning-induced transient suppression.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (60.9–65.4 V). It exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of transients induced by inductive switching or electrostatic discharge.
Rated for 600 W peak pulse power (10/1000 μs), it delivers 85.9 V clamping voltage at 7.0 A IPPM while maintaining ≤0.5 μA reverse leakage at 54 V. Its junction-to-ambient thermal resistance is 125 °C/W on standard PCB pad layout, supporting operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail protection threshold. |
| VBR min/max | 60.9 V / 65.4 V at 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots. |
| VC @ IPPM | 85.9 V at 7.0 A - clamping voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 600 W - peak pulse power handling capability; validates robustness against IEC 61000-4-5 Level 3/4 surges. |
| ID @ VWM | ≤0.5 μA - ultra-low reverse leakage preserves efficiency in high-impedance sensing or battery-powered circuits. |
| TJ max | +150 °C - enables deployment in under-hood automotive or industrial motor drive environments. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 2.20 mm height and 5.59 mm length; compatible with automated pick-and-place. |
Pinout & Package
Two-terminal unidirectional TVS diode in SMB (DO-214AA) package. Cathode denoted by band-marked end; anode is unmarked end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt surge current to ground. |
| Anode (unmarked end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path; completes clamping loop during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Ensures consistent clamping onset across batches - critical for compliance with IEC 61000-4-2/4-5 margin requirements. |
| 600 W peak pulse power (10/1000 μs) | Validates protection against severe lightning-induced surges in telecom and industrial fieldbus interfaces. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-related popcorn failure risk. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green electronics manufacturing. |
| Low leakage (≤0.5 μA @ 54 V) | Minimizes standby power loss in always-on IoT sensor nodes and battery-backed control systems. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 48 V DC bus inputs against load-dump transients and relay coil flyback in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges above 54 V. Use Value: Limits voltage excursion to ≤85.9 V during 7.0 A surge, preventing damage to downstream DC-DC controllers and gate drivers. |
Use Scenario: Surge suppression on LIN bus lines exposed to battery transients and ESD in door module ECUs. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between LIN signal and chassis ground to absorb coupled noise. Use Value: Clamps fast-rising transients within nanoseconds while adding <1 pF parasitic capacitance - preserving signal integrity up to 20 kbps. |
| Telecom Power Feeds | Industrial Sensor Signal Conditioning |
|
Use Scenario: Overvoltage protection of -48 V DC power input in remote radio head (RRH) base station equipment. IC Role / Device Role / Timing Role: Reverse-connected SMBJ54D-M3/I referenced to negative rail to suppress positive surges relative to ground. Use Value: Withstands repetitive 600 W pulses at 0.01 % duty cycle, ensuring long-term reliability in outdoor telecom infrastructure. |
Use Scenario: Protection of analog output lines (e.g., 4–20 mA transmitter) from accidental 24 V supply miswiring or field wiring faults. IC Role / Device Role / Timing Role: TVS placed across output terminals to clamp reverse polarity or overvoltage events before they reach op-amp output stage. Use Value: 54 V VWM aligns with common 24 V system margins; 85.9 V VC prevents latch-up in precision DAC buffer stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CD-M3/I | Bidirectional variant; symmetric VBR (60.9–65.4 V) and VC (85.9 V) in both polarities; same PPPM and package. | Required where AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN) need protection without polarity assumptions. | Select SMBJ54CD-M3/I only if bidirectional clamping is mandated by interface standard or signal swing range. |
| SMAJ54A-M3/84A | Lower PPPM (400 W); SMA (DO-214AC) package (smaller footprint, higher RθJA = 150 °C/W); same VWM/VBR/VC ratings. | Suitable for space-constrained designs with lower surge threat levels (e.g., consumer USB ports), but not for industrial 600 W requirements. | Choose SMAJ54A-M3/84A only when board area is critical and surge energy is confirmed ≤400 W per IEC test profile. |
Compared with SMBJ54CD-M3/I and SMAJ54A-M3/84A, the SMBJ54D-M3/I uniquely balances 600 W surge capacity, SMB package manufacturability, and unidirectional precision clamping - making it optimal for 24–48 V DC power rail protection where polarity is fixed and energy threats are severe.
Availability
SMBJ54D-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, full M3-compliance traceability, and guaranteed long-term availability for production programs.
Supply support for SMBJ54D-M3/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, power efficiency, and AEC-Q200 qualification.
The SMBJ series was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and infrastructure equipment where failure modes must be mitigated without compromising signal fidelity or thermal performance.
FAQ
What is the clamping voltage of SMBJ54D-M3/I at its rated peak pulse current?
The SMBJ54D-M3/I has a maximum clamping voltage (VC) of 85.9 V at 7.0 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on the protected circuit during a worst-case surge event and is confirmed in Vishay's datasheet Document Number 87606, Table "ELECTRICAL CHARACTERISTICS".
Is SMBJ54D-M3/I suitable for bidirectional signal line protection?
No - SMBJ54D-M3/I is a unidirectional TVS diode, intended for DC rail or polarity-defined signal protection. For bidirectional applications like RS-485 or CAN bus, the SMBJ54CD-M3/I variant must be used instead, as it provides symmetrical clamping in both directions. Using SMBJ54D-M3/I on AC-coupled lines risks forward conduction and failure.
What does the "M3" suffix indicate for SMBJ54D-M3/I?
The "M3" suffix denotes Vishay's halogen-free, RoHS-compliant construction with matte tin-plated leads qualified to JESD 201 Class 2 whisker resistance and J-STD-002 solderability. It also confirms compliance with UL 94 V-0 flammability rating for the molding compound - essential for industrial and automotive safety certifications.
How does SMBJ54D-M3/I perform under elevated ambient temperatures?
SMBJ54D-M3/I derates linearly above 25 °C ambient: its power dissipation drops from 1.0 W at TA = 25 °C to zero at TA = 150 °C, per Figure 5 in the datasheet. At 70 °C ambient, usable steady-state power is ~0.4 W; for surge events, the 600 W rating applies only at TJ ≤ 150 °C, requiring appropriate PCB copper area for thermal management.
Can SMBJ54D-M3/I replace SMAJ54A-M3/84A in an existing design?
Direct replacement is not recommended without validation: although both share 54 V VWM and similar VBR/VC, SMBJ54D-M3/I offers 600 W PPPM versus 400 W for SMAJ54A-M3/84A and uses the larger SMB package (vs. SMA), affecting board layout and thermal performance. The SMBJ54D-M3/I also has lower RθJA (125 vs. 150 °C/W), altering thermal behavior in dense layouts.
SMBJ54D-M3/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):
- 54V
- Voltage - Breakdown (Min):
- 60.9V
- Voltage - Clamping (Max) @ Ipp:
- 85.9V
- Current - Peak Pulse (10/1000µs):
- 7A
- 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)
SMBJ54D-M3/I FAQ
1.How can I place an order for SMBJ54D-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54D-M3/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 SMBJ54D-M3/I reliable?
The price and inventory of SMBJ54D-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54D-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ54D-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54D-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54D-M3/I?
SMBJ54D-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54D-M3/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 SMBJ54D-M3/I?
For technical support, including SMBJ54D-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54D-M3/I requirements.
6.How does Aetrix verify that SMBJ54D-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ54D-M3/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 SMBJ54D-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ54D-M3/I?
All SMBJ54D-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54D-M3/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 SMBJ54D-M3/I part is unused and in its original packaging.
Return procedure for SMBJ54D-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54D-M3/I Tags
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