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Vishay General Semiconductor - Diodes Division SMBJ54A-E3/52
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- Part No.:
- SMBJ54A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54A-E3/52.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,174
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Product details
Overview
SMBJ54A-E3/52 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 standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1.0 mA, 87.1 V maximum clamping voltage (VC) at 6.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ54A-E3/52 datasheet, SMBJ54A-E3/52 pinout, SMBJ54A-E3/52 application, or SMBJ54A-E3/52 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, low incremental surge resistance, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt clamp during overvoltage events, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and stable clamping performance across -55 °C to +150 °C. Its unidirectional configuration provides reverse-biased protection only, with cathode band marking for polarity identification.
The device complies with ANSI/IEEE C62.35 standards for transient suppression and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C reflow peak. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation under repetitive surge conditions up to 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 60.0 V / 66.3 V at 1.0 mA - Breakdown onset range; ensures predictable turn-on within specified tolerance for consistent protection threshold. |
| VC @ IPPM | 87.1 V at 6.9 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream components during transient events. |
| PPPM | 600 W - Peak pulse power handling capability; supports robust protection against lightning-induced surges and inductive switching spikes. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates survivability during high-energy fault conditions. |
| TJ max | +150 °C - Maximum junction temperature; enables use in high-ambient environments such as motor drives and industrial controls. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs PCB pad layout requirements (0.2" × 0.2" copper per terminal) for thermal management. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (cathode-banded side is opposite) | Connected to ground or lower-potential rail in unidirectional clamping configuration; forms current path during reverse transient. |
| Cathode | Reverse-biased clamping terminal (marked with band) | Connected to protected line (e.g., 54 V supply rail); conducts when line voltage exceeds VBR, diverting surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges without derating in standard PCB layouts. |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR performance under thermal cycling and humidity exposure. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without pre-baking or special handling in high-volume SMT production. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving clamping accuracy for sensitive 54 V logic interfaces. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental compliance requirements while maintaining cost-effective sourcing for industrial applications. |
Applications
| Industrial Motor Drive Power Supply | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protection of 54 V auxiliary power rail against load dump and inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between rail and chassis ground to limit transient voltage to ≤87.1 V. Use Value: Prevents damage to 60 V-rated DC-DC controllers and gate drivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Surge suppression on LIN bus power line in BCM modules exposed to battery transients. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across VBAT and GND to absorb energy from ignition noise and alternator load dump. Use Value: Maintains system uptime by preventing latch-up or burnout of LIN transceivers rated for ≤60 V absolute maximum. |
| Telecom Remote Radio Unit (RRU) | Industrial PLC Digital Input Module |
|
Use Scenario: Input protection for 48–60 V DC power interface in outdoor RRU enclosures subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on main DC input, coordinated with upstream MOVs for staged energy absorption. Use Value: Achieves IEC 61000-4-5 4 kV line-earth surge immunity without increasing board area or BOM count. |
Use Scenario: Protection of optocoupler input stage on 54 V digital input channel subjected to field wiring transients. IC Role / Device Role / Timing Role: Fast-response shunt suppressor placed directly at connector entry point to limit voltage seen by series resistor and LED anode. Use Value: Extends mean time between failures (MTBF) by eliminating premature LED degradation caused by repeated 100 V+ spikes. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects). | Choose SMBJ54A-M3/52 when halogen-free certification is required; otherwise SMBJ54A-E3/52 offers standard commercial-grade compliance. |
| SMCJ54A-E3/52 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with 1500 W PPPM. | Used where higher single-event energy handling is needed (e.g., primary-side AC/DC input), requiring PCB layout change. | Choose SMCJ54A-E3/52 only if 1500 W surge margin is required; SMBJ54A-E3/52 remains optimal for space-constrained secondary-side protection. |
Compared with SMBJ54A-M3/52, the SMBJ54A-E3/52 offers identical protection performance with standard RoHS compliance; compared with SMCJ54A-E3/52, it trades peak power headroom (600 W vs. 1500 W) for 40% smaller footprint and lower thermal mass - ideal for dense 54 V rail protection near ICs.
Availability
SMBJ54A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom remote radio units, and PLC digital input modules requiring stable component supply and full traceability.
Supply support for SMBJ54A-E3/52 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 industrial and automotive applications.
The SMBJ series was developed specifically for surface-mount transient suppression in space-constrained, high-surge environments - balancing clamping precision, thermal robustness, and automated manufacturability.
FAQ
What is the maximum clamping voltage of SMBJ54A-E3/52 under standard test conditions?
The SMBJ54A-E3/52 has a maximum clamping voltage (VC) of 87.1 V at 6.9 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ54A-E3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) when mounted per recommended pad layout.
Is SMBJ54A-E3/52 suitable for automotive applications?
The SMBJ54A-E3/52 is rated for commercial temperature range (-55 °C to +150 °C) and meets J-STD-020 MSL Level 1, but it is not AEC-Q101 qualified. For automotive applications requiring qualification, the Vishay part SMBJ54AHE3_B/H (with HE3 suffix) must be used. The SMBJ54A-E3/52 remains appropriate for non-safety-critical industrial or telecom systems operating within the same temperature envelope.
What does the "-E3/52" suffix indicate in SMBJ54A-E3/52?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/52" specifies packaging in 7" diameter plastic tape and reel containing 750 units. This format ensures compatibility with standard SMT pick-and-place equipment and satisfies environmental compliance requirements for most industrial markets. The SMBJ54A-E3/52 is not halogen-free - that variant uses the "M3" suffix.
How does SMBJ54A-E3/52 compare to bidirectional TVS diodes like SMBJ54CA?
The SMBJ54A-E3/52 is unidirectional and protects against reverse-polarity transients only, with a cathode band marking polarity. In contrast, SMBJ54CA is bidirectional and suppresses surges of either polarity, making it suitable for AC lines or differential signal pairs. The SMBJ54A-E3/52 offers identical VWM (54 V) and VC (87.1 V) but cannot replace SMBJ54CA in symmetric applications without circuit redesign.
What PCB layout guidance applies to SMBJ54A-E3/52 for optimal thermal and electrical performance?
Vishay specifies mounting SMBJ54A-E3/52 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and 100 °C/W thermal resistance. Traces to the SMBJ54A-E3/52 should be short and wide to minimize inductance, and ground connections must be low-impedance. Avoid thermal reliefs on pads, and ensure no silkscreen or solder mask encroachment on active pad areas to maintain solder joint integrity during reflow.
SMBJ54A-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBJ54A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54A-E3/52 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-E3/52 reliable?
The price and inventory of SMBJ54A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ54A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54A-E3/52?
SMBJ54A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54A-E3/52 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-E3/52?
For technical support, including SMBJ54A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54A-E3/52 requirements.
6.How does Aetrix verify that SMBJ54A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ54A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ54A-E3/52?
All SMBJ54A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ54A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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