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Vishay General Semiconductor - Diodes Division SMBJ54-E3/5B
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- Part No.:
- SMBJ54-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54-E3/5B.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,913
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Product details
Overview
SMBJ54-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 87.1 V at 6.9 A, and operates across -55 °C to +150 °C junction temperature range - deployed in industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the SMBJ54-E3/5B datasheet, SMBJ54-E3/5B pinout, SMBJ54-E3/5B application, or SMBJ54-E3/5B equivalent, this page delivers verified electrical specs, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant commercial-grade packaging, and direct alternatives with documented VBR, IPPM, and VC differences.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to ESD and lightning-induced transients. Its unidirectional polarity enables integration into DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded.
The device meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 100 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits low incremental surge resistance - critical for maintaining tight clamping during high-current transients without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - guaranteed breakdown window ensures predictable turn-on across temperature and lot variation. |
| VC @ IPPM | 87.1 V at 6.9 A - clamping voltage limits downstream IC stress during 600 W 10/1000 µs surge events. |
| PPPM | 600 W - peak pulse power rating with 0.01% duty cycle; validates protection capability against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - maximum junction temperature enables use in under-hood automotive and high-ambient industrial environments. |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs PCB layout cooling requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current to ground when VWM exceeded. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 4 kV surge tests without external series impedance. |
| Glass-passivated chip junction | Ensures stable VBR and low leakage over 10+ years in humid or thermally cycled environments. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking - reduces manufacturing overhead. |
| RoHS-compliant, halogen-free option available | Meets IPC-1752A material declaration requirements for EU and global environmental compliance programs. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 48 V DC bus against switching transients from IGBT gate drivers and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between bus and ground to clamp positive-going spikes before they reach DC-DC controllers. Use Value: Limits transient voltage to ≤87.1 V, preventing latch-up or oxide damage in 65 V-rated power management ICs. |
Use Scenario: Input-stage surge suppression on AC/DC front-end rectifiers handling 100–240 VAC inputs. IC Role / Device Role / Timing Role: Primary-level TVS absorbing line-to-ground surges before bulk capacitor and PFC controller. Use Value: Withstands 600 W pulses without degradation, extending mean time between failures in outdoor base station power units. |
| Automotive Engine Control Units | Industrial Sensor Signal Conditioning |
Use Scenario: Protection of 12 V battery-supplied microcontroller I/O pins against load dump and jump-start transients. IC Role / Device Role / Timing Role: Localized TVS on CAN transceiver VCC rail and LIN bus lines to maintain communication integrity. Use Value: Operates up to +150 °C junction temperature and passes AEC-Q101 qualification when ordered as HE3 variant. |
Use Scenario: Shielding 0–10 V analog sensor outputs from ESD events during field wiring and connector mating. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed directly at connector entry point to preserve signal fidelity. Use Value: Clamps sub-100 ns ESD pulses to <90 V while adding <0.5 pF parasitic capacitance - no measurable impact on 10 kHz sensor bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ54A | VBR = 60–66.3 V (same), VC = 87.1 V (same), but PPPM = 400 W (lower); RθJA = 120 °C/W (higher). | Lower surge rating requires parallel placement or upstream current limiting for IEC 61000-4-5 Level 4 compliance. | Select when cost sensitivity outweighs peak surge margin and board space allows thermal relief. |
| ON Semiconductor SMCJ54A | VBR = 60–66.3 V (same), VC = 87.1 V (same), but package is SMC (DO-214AB); 2.5× larger footprint than SMB. | Requires PCB redesign due to 7.11 mm × 6.22 mm SMC vs. 4.57 mm × 3.94 mm SMB outline; higher IPPM (10.3 A) not usable without layout change. | Choose only if existing design uses SMC footprint or requires >600 W rating (SMCJ54A = 1500 W). |
Compared with SMBJ54-E3/5B, SMAJ54A offers identical clamping but reduced surge headroom and thermal performance, while SMCJ54A provides higher power handling at the cost of incompatible mechanical fit - making SMBJ54-E3/5B optimal for space-constrained 600 W protection without layout revision.
Availability
SMBJ54-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive engine control units requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ54-E3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series targets board-level transient protection in harsh environments, delivering standardized 600 W surge capability in compact SMB packages for automotive, industrial, and telecom infrastructure designs.
FAQ
What is the maximum clamping voltage of SMBJ54-E3/5B under a 10/1000 µs surge?
The SMBJ54-E3/5B clamps to a maximum of 87.1 V when subjected to its rated 6.9 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 87.1 V during surge events - critical for protecting 100 V-rated capacitors and 75 V-input regulators. The SMBJ54-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ54-E3/5B suitable for automotive applications?
SMBJ54-E3/5B is RoHS-compliant and qualified for commercial-grade operation (-55 °C to +150 °C), but it is not AEC-Q101 certified in this specific suffix. For automotive use, Vishay offers the SMBJ54HE3 variant (AEC-Q101 qualified, same electrical specs). The SMBJ54-E3/5B remains appropriate for non-safety-critical automotive subsystems like infotainment power rails where full qualification is not mandated - always verify system-level compliance requirements before final selection of SMBJ54-E3/5B.
What is the reverse leakage current of SMBJ54-E3/5B at its rated stand-off voltage?
At VWM = 54 V and TA = 25 °C, the SMBJ54-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage ensures minimal power loss in always-on 54 V systems such as telecom backup supplies and battery-monitoring circuits. Leakage remains below 5 µA even at +125 °C junction temperature, preserving efficiency in high-ambient deployments of SMBJ54-E3/5B.
How does the SMBJ54-E3/5B differ from bidirectional variants like SMBJ54CA?
The SMBJ54-E3/5B is unidirectional and blocks reverse current until breakdown, whereas SMBJ54CA is bidirectional and clamps both polarities symmetrically. SMBJ54-E3/5B has a cathode band marking and is used on DC-biased lines; SMBJ54CA lacks polarity marking and suits AC-coupled or floating signal paths. Their VBR and VC values are identical, but SMBJ54-E3/5B supports 100 A forward surge (IFSM), while SMBJ54CA does not specify IFSM. Choose SMBJ54-E3/5B for DC rail protection and SMBJ54CA for differential data lines.
What PCB pad layout is recommended for optimal thermal performance of SMBJ54-E3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMBJ54-E3/5B to achieve the rated RθJA = 100 °C/W. Use internal thermal vias (≥4 × 0.3 mm diameter) under each pad connected to solid ground/power planes. Avoid narrow traces - keep connections ≥1.5 mm wide. This layout prevents junction temperature exceedance during repetitive 600 W surges and ensures SMBJ54-E3/5B sustains full-rated performance over lifetime.
SMBJ54-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 96.3V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
SMBJ54-E3/5B FAQ
1.How can I place an order for SMBJ54-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54-E3/5B 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 SMBJ54-E3/5B reliable?
The price and inventory of SMBJ54-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ54-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54-E3/5B?
SMBJ54-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54-E3/5B 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 SMBJ54-E3/5B?
For technical support, including SMBJ54-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54-E3/5B requirements.
6.How does Aetrix verify that SMBJ54-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ54-E3/5B 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 SMBJ54-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ54-E3/5B?
All SMBJ54-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54-E3/5B, 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 SMBJ54-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ54-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54-E3/5B Tags
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