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Vishay General Semiconductor - Diodes Division SMBJ54A-M3/52
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- Part No.:
- SMBJ54A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54A-M3/52.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,797
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Product details
Overview
SMBJ54A-M3/52 from Vishay General Semiconductor is a unidirectional 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 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 6.9 A peak pulse current (IPPM) under 10/1000 µs waveform, and 600 W peak pulse power dissipation - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the SMBJ54A-M3/52 datasheet, SMBJ54A-M3/52 pinout, SMBJ54A-M3/52 application, or SMBJ54A-M3/52 equivalent, key selection criteria include clamping voltage (87.1 V at IPPM), low incremental surge resistance, AEC-Q101 qualification eligibility (via HM3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping protection device in parallel with sensitive circuit nodes. Its glass-passivated junction enables fast response (<1 ps), low leakage (<1.0 µA at VWM), and stable breakdown behavior across -55 °C to +150 °C junction temperature range.
The SMBJ54A-M3/52 complies with ANSI/IEEE C62.35 surge standards and delivers 600 W peak pulse power handling with 0.01% duty cycle. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable operation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (Breakdown Voltage) | 60.0–66.3 V at 1.0 mA - guaranteed conduction onset range for reliable overvoltage triggering |
| VC (Clamping Voltage) | 87.1 V at 6.9 A (10/1000 µs) - peak voltage seen by protected circuit during surge event |
| PPPM (Peak Pulse Power) | 600 W - surge energy absorption capacity under standardized 10/1000 µs waveform |
| IPPM (Peak Pulse Current) | 6.9 A - maximum non-repetitive surge current the device safely clamps without failure |
| Junction Temp. Range | -55 °C to +150 °C - operational envelope compatible with automotive under-hood and industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with cathode band marking and 2.20 mm profile |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow peak), halogen-free and RoHS-compliant (M3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential rail; defines forward conduction direction |
| Cathode | High-side surge input terminal | Marked with band; connects to protected line; conducts during reverse overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24–48 V DC rails |
| 87.1 V clamping voltage at 6.9 A | Limits stress on downstream 100 V-rated MOSFETs and logic ICs during transient events |
| Glass-passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA), and long-term reliability under thermal cycling |
| Low-profile SMB package | Supports high-density PCB layouts and automated pick-and-place assembly with 0.220" (5.59 mm) body length |
| AEC-Q101 qualification path | HM3 variant available for automotive applications requiring validated reliability per JESD22-A108 |
Applications
| Industrial PLC I/O Protection | Telecom Line Card Surge Suppression |
|---|---|
Use Scenario: Protecting 24 V DC digital input modules from inductive switching transients and EFT bursts. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed across input terminal and ground. Use Value: Limits voltage excursion to ≤87.1 V during 6.9 A surge, preserving optocoupler and microcontroller input integrity. |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs on telecom line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end TVS on power and data lines prior to filtering and isolation stages. Use Value: Clamps 10/1000 µs surges within 1 ps, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
| Automotive Body Control Module | Consumer Appliance Power Supply Input |
Use Scenario: Guarding 12 V supply inputs of BCMs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary-level TVS after primary fuse and choke, directly at IC power pins. Use Value: Withstands 100 A IFSM (8.3 ms half-sine), enabling coordination with slow-blow fuses in 12 V systems. |
Use Scenario: Suppressing switching noise and ESD on AC-DC adapter DC output rails feeding motor drivers and MCU boards. IC Role / Device Role / Timing Role: Final-stage clamping device on regulated 5 V/12 V outputs before connector interfaces. Use Value: Halogen-free M3 construction meets IEC 61204-3 environmental requirements for white goods and home automation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free; commercial grade only | Lacks halogen-free certification required for some consumer appliance programs | Select when halogen-free compliance is not mandated and cost optimization is prioritized |
| SMBJ54AHM3_B/H | Identical clamping and surge ratings; AEC-Q101 qualified; halogen-free and RoHS-compliant | Qualified for automotive Grade 2 (-40 °C to +105 °C ambient) and extended life testing | Choose for automotive body electronics where qualification traceability and extended temperature validation are mandatory |
Compared with SMBJ54A-M3/52, the E3 variant offers identical protection performance at lower material cost but excludes halogen-free assurance, while the HM3_B/H version adds full AEC-Q101 validation - making it suitable for automotive deployment where SMBJ54A-M3/52 serves best in industrial and telecom equipment requiring halogen-free compliance without automotive qualification.
Availability
SMBJ54A-M3/52 is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, consumer appliance power supplies, and automotive body control modules requiring stable component supply with halogen-free and RoHS-compliant construction.
Supply support for SMBJ54A-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, TVS devices, and power MOSFETs for high-reliability applications.
The SMBJ series was engineered for high-energy transient suppression in space-constrained SMT designs, targeting industrial automation, telecom infrastructure, and automotive subsystems where robustness and repeatability are critical.
FAQ
What is the clamping voltage of SMBJ54A-M3/52 at its rated peak pulse current?
The SMBJ54A-M3/52 has a maximum clamping voltage (VC) of 87.1 V when subjected to its rated 6.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value ensures protected circuits remain below critical voltage thresholds during surge events, and is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC guidelines.
Is SMBJ54A-M3/52 suitable for automotive applications?
SMBJ54A-M3/52 is halogen-free and RoHS-compliant but not AEC-Q101 qualified. For automotive use, Vishay offers the SMBJ54AHM3_B/H variant - which shares identical electrical characteristics and adds AEC-Q101 qualification. The SMBJ54A-M3/52 itself is appropriate for non-automotive applications such as industrial controls and telecom equipment where halogen-free compliance is required.
What does the "M3" suffix indicate in SMBJ54A-M3/52?
The "M3" suffix in SMBJ54A-M3/52 denotes halogen-free, RoHS-compliant construction meeting IEC 61249-2-21 requirements. It also signifies compliance with JESD201 Class 2 whisker resistance and JEDEC MSL Level 1 moisture sensitivity - enabling safe 260 °C lead-free reflow without popcorn cracking.
How does SMBJ54A-M3/52 differ from bidirectional variants like SMBJ54CA?
SMBJ54A-M3/52 is unidirectional and features a cathode band marking; it conducts only during reverse overvoltage events. In contrast, SMBJ54CA is bidirectional with no polarity marking and clamps surges of either polarity. The SMBJ54A-M3/52 exhibits lower leakage (<1.0 µA at 54 V) and supports higher IFSM (100 A), making it preferred for DC power rail protection where polarity is fixed.
What is the thermal resistance of SMBJ54A-M3/52, and how does it affect layout design?
SMBJ54A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation under repetitive surges, PCB layout must follow Vishay's recommended 5.0 mm × 5.0 mm copper pad per terminal - reducing thermal impedance and preventing junction overheating beyond the 150 °C maximum rating.
SMBJ54A-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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- 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)
SMBJ54A-M3/52 FAQ
1.How can I place an order for SMBJ54A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54A-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 SMBJ54A-M3/52 reliable?
The price and inventory of SMBJ54A-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 SMBJ54A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ54A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54A-M3/52?
SMBJ54A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54A-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 SMBJ54A-M3/52?
For technical support, including SMBJ54A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54A-M3/52 requirements.
6.How does Aetrix verify that SMBJ54A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ54A-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 SMBJ54A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ54A-M3/52?
All SMBJ54A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54A-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 SMBJ54A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ54A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54A-M3/52 Tags
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