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Vishay General Semiconductor - Diodes Division SMBJ54HE3/52
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- Part No.:
- SMBJ54HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54HE3/52.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,217
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Product details
Overview
SMBJ54HE3/52 from Vishay General Semiconductor is a unidirectional surface-mount 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 automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBJ54HE3/52 datasheet, SMBJ54HE3/52 pinout, SMBJ54HE3/52 application, or SMBJ54HE3/52 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), clamping performance under surge, and real-world use context for ESD/lightning transient suppression in 12 V/24 V systems.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior. Its 10/1000 µs waveform response enables reliable suppression of inductive switching transients and lightning-induced surges up to 6.9 A peak pulse current (IPPM).
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it meets MSL Level 1 (J-STD-020) with 260 °C reflow peak, and its 20 °C/W junction-to-lead thermal resistance supports localized heat dissipation during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 60.0–66.3 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 87.1 V at IPPM = 6.9 A - Peak voltage seen by protected circuit during 600 W transient; critical for IC/MOSFET survivability. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Sustains high-energy surges without failure; validated per ANSI/IEEE C62.35 standards. |
| IPPM (Peak Pulse Current) | 6.9 A - Maximum non-repetitive surge current handled; derived from VC and PPPM (P = V × I). |
| TJ max. | +150 °C - Enables operation in under-hood automotive and industrial environments with minimal derating. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard PCB layout; informs heatsinking requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (unidirectional) | Connected to lower-potential side (e.g., GND or return line); conducts during forward surge or bias conditions. |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., 12 V rail); initiates controlled breakdown when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control and body electronics. |
| 600 W peak pulse power | Handles high-energy transients from load dump or ISO 7637-2 Pulse 5a without degradation - supports 12 V/24 V system compliance. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream components; enables tighter design margins versus higher-ratio TVS devices. |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; reduces manufacturing overhead and avoids moisture-related popcorning. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability (<1 µA at VWM) across temperature and life cycle. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and ground, absorbing >100 V spikes within nanoseconds. Use Value: Limits voltage seen by LDOs and microcontrollers to ≤87.1 V, preventing latch-up or gate oxide damage during 600 W surges. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) TVS shunting transient energy from signal line to ground before reaching ADC input. Use Value: Maintains signal integrity with <1 µA leakage at 54 V, avoiding offset drift while clamping ±15 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Feeds | Consumer Power Adapter Outputs |
|
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream fuse and secondary filtering. Use Value: Withstands 6.9 A surge current at 87.1 V clamping, enabling compliance with ITU-T K.21 basic protection level for outdoor installations. |
Use Scenario: Secondary-side transient suppression on 5–24 V outputs of wall adapters used in smart home hubs and audio gear. IC Role / Device Role / Timing Role: Final-line defense against plug-in surges and internal switching noise before reaching USB or logic rails. Use Value: RoHS-compliant and halogen-free option (HE3 suffix) meets regional environmental mandates without sacrificing 600 W surge rating. |
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 | Commercial-grade (non-AEC-Q101), identical electrical specs and SMB package. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle traceability is not needed. |
| SMAJ54AHE3/A | Same VWM/VBR/VC, but in smaller SMA (DO-214AC) package with lower PPPM (400 W). | Lower surge handling limits use to less demanding environments (e.g., consumer USB ports vs. automotive power rails). | Choose only if board space is constrained and surge threat level is ≤400 W; verify thermal derating on reduced pad area. |
Compared with SMBJ54HE3/52, SMBJ54A-E3/52 offers identical protection performance without AEC-Q101 validation, while SMAJ54AHE3/A trades 33 % lower peak power for 30 % smaller footprint - requiring explicit risk assessment of surge severity and qualification scope.
Availability
SMBJ54HE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMBJ54HE3/52 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, efficiency, and application-specific optimization.
The SMBJ series targets high-surge industrial and automotive applications, delivering standardized 600 W transient suppression in compact SMB packages with AEC-Q101 variants like SMBJ54HE3/52 for mission-critical systems.
FAQ
What is the clamping voltage of SMBJ54HE3/52 at its rated peak pulse current?
The SMBJ54HE3/52 has a maximum clamping voltage (VC) of 87.1 V at its specified peak pulse current (IPPM) of 6.9 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ54HE3/52 maintains this clamping performance across its qualified operating temperature range.
Is SMBJ54HE3/52 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMBJ54HE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation (Doc. #88392). This qualification validates performance under accelerated stress tests including temperature cycling, high-temperature reverse bias, and surge endurance - making SMBJ54HE3/52 suitable for under-hood and chassis-mounted automotive modules where reliability is critical.
How does the SMBJ54HE3/52 differ from the non-HE3 version (e.g., SMBJ54A-E3/52)?
The SMBJ54HE3/52 differs from SMBJ54A-E3/52 solely in qualification status: HE3 denotes AEC-Q101 qualification and automotive-grade traceability, while the base E3 version is commercial-grade. Electrical parameters, package, and pinout are identical. The SMBJ54HE3/52 also carries RoHS compliance and is marked with the "HE3" suffix to distinguish its automotive qualification - essential for Tier 1 supplier BOMs.
What is the thermal resistance of SMBJ54HE3/52, and how does it affect PCB layout?
The SMBJ54HE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad area increases RθJA, risking thermal runaway during repetitive surges. For high-duty-cycle applications, designers should maintain full pad dimensions or add thermal vias to inner layers to sustain reliability.
Can SMBJ54HE3/52 be used in bidirectional configurations?
No, SMBJ54HE3/52 is a unidirectional TVS diode, indicated by its "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMBJ54CA). Using SMBJ54HE3/52 in reverse-biased AC signal paths would result in forward conduction and potential failure. For bidirectional protection at 54 V standoff, specify SMBJ54CAHE3/52 instead - which has symmetric breakdown in both directions.
SMBJ54HE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ54HE3/52 FAQ
1.How can I place an order for SMBJ54HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54HE3/52 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 SMBJ54HE3/52 reliable?
The price and inventory of SMBJ54HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ54HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54HE3/52?
SMBJ54HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54HE3/52 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 SMBJ54HE3/52?
For technical support, including SMBJ54HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54HE3/52 requirements.
6.How does Aetrix verify that SMBJ54HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ54HE3/52 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 SMBJ54HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ54HE3/52?
All SMBJ54HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54HE3/52, 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 SMBJ54HE3/52 part is unused and in its original packaging.
Return procedure for SMBJ54HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54HE3/52 Tags
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