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Vishay General Semiconductor - Diodes Division SMBJ54AHE3/5B
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- Part No.:
- SMBJ54AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54AHE3/5B.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,040
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Product details
Overview
SMBJ54AHE3/5B 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 sensitive electronics. 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 clamps transients to ≤87.1 V. It is widely deployed in power supply input stages and DC bus lines of industrial motor drives.
For engineers reviewing the SMBJ54AHE3/5B datasheet, SMBJ54AHE3/5B pinout, SMBJ54AHE3/5B application, or SMBJ54AHE3/5B equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal derating above 25 °C, IEC 61000-4-5 surge compliance capability, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This TVS diode operates as a voltage-clamping device in reverse-biased configuration, conducting only when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
The SMBJ54AHE3/5B is rated for 600 W peak pulse power (10/1000 µs), with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It supports operating junction temperatures from –55 °C to +150 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating window below protected circuit's max rating. |
| VBR (Breakdown Voltage) | 60.0–66.3 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates; tight tolerance enables predictable clamping onset. |
| VC (Clamping Voltage) | ≤87.1 V at 6.9 A (10/1000 µs) - Peak voltage seen by downstream circuit during worst-case surge; critical for ensuring protected IC remains within absolute max ratings. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity under standardized surge waveform; validates suitability for IEC 61000-4-5 Level 3/4 applications. |
| IPPM (Peak Pulse Current) | 6.9 A - Maximum non-repetitive surge current the device safely clamps without degradation; directly tied to PCB trace width and layout thermal design. |
| TJmax | +150 °C - Maximum junction temperature; allows operation in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing; required for powertrain and body control module designs. |
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 indicated by band marking on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path terminal | Connected to lower-potential side (e.g., ground or return path); polarity must be verified to avoid forward conduction during normal operation. |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 48 V rail); reverse-biased during normal operation and conducts only during overvoltage events. |
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 (line-earth) without parallel staging or external current sharing. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes voltage overshoot during clamping-critical for safeguarding 60 V-rated MOSFETs and gate drivers in 48 V systems. |
| AEC-Q101 qualified (HE3 suffix) | Validates long-term reliability under automotive thermal cycling, humidity, and vibration stress-required for ASIL-B compliant subsystems. |
| MSL Level 1, 260 °C reflow compatible | Eliminates moisture sensitivity concerns and enables standard SMT assembly without baking or special handling protocols. |
| Glass passivated junction | Ensures stable leakage current (<1.0 µA at VWM) across temperature and lifetime, preventing false triggering or power loss in always-on circuits. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 48 V DC bus against switching transients from H-bridge MOSFETs and inductive load back-EMF. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and chassis ground, clamping positive-going surges only. Use Value: Limits bus voltage excursion to ≤87.1 V during 6.9 A transients, preserving gate oxide integrity of 100 V-rated Si MOSFETs. |
Use Scenario: Input protection for LIN bus transceivers and microcontroller I/O pins exposed to battery line transients (load dump, jump start). IC Role / Device Role / Timing Role: Standoff-rated TVS on VCC rail, triggered only above 54 V to avoid interference with nominal 12 V/24 V operation. Use Value: Clamps ISO 7637-2 Pulse 5a (load dump) to <87.1 V, preventing latch-up or permanent damage to 5 V logic interfaces. |
| Telecom Power Supplies | Renewable Energy Inverters |
|
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs feeding PoE PSE controllers. IC Role / Device Role / Timing Role: Fast-response clamping device placed after bulk filter capacitor, upstream of DC-DC converters. Use Value: Responds in <1 ns to fast-rising transients from lightning-induced coupling, maintaining output regulation during surge events. |
Use Scenario: DC-link protection in solar string inverters where PV array voltage can reach up to 1000 V, but auxiliary 48 V control rails require localized suppression. IC Role / Device Role / Timing Role: Standoff-limited TVS on isolated 48 V auxiliary supply, coordinated with primary-side MOVs for staged protection. Use Value: Provides precise 54 V threshold with minimal leakage, avoiding unnecessary conduction during normal MPPT voltage fluctuations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free material compliance is mandated by OEM environmental policy. | Choose SMBJ54AHM3/5B if halogen-free bill-of-materials (BOM) is required; otherwise SMBJ54AHE3/5B suffices. |
| SMAJ54A-E3/61 | Lower power rating (400 W), smaller SMA package (DO-214AC), higher RθJA (150 °C/W), same VWM/VBR. | Suitable only for lower-energy transients (e.g., ESD-only); not recommended for IEC 61000-4-5 or load-dump scenarios. | Select SMAJ54A-E3/61 only for space-constrained, low-surge-risk applications where 600 W headroom is unnecessary. |
Compared with SMBJ54AHE3/5B, the SMBJ54AHM3/5B offers identical protection performance with halogen-free construction, while the SMAJ54A-E3/61 trades 33 % lower surge power and inferior thermal performance for reduced footprint-making it unsuitable as a drop-in replacement in high-reliability industrial or automotive use cases.
Availability
SMBJ54AHE3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, AEC-Q101 traceability, and consistent 600 W surge handling across production batches.
Supply support for SMBJ54AHE3/5B 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting applications demanding repeatable clamping performance, low leakage, and long-term stability under thermal and electrical stress.
FAQ
What is the maximum clamping voltage of SMBJ54AHE3/5B at its rated peak pulse current?
The SMBJ54AHE3/5B clamps to a maximum of 87.1 V when subjected to its specified peak pulse current of 6.9 A under the 10/1000 µs waveform. This value is measured at TA = 25 °C with devices mounted on 0.2" × 0.2" copper pads per terminal, and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events.
Is SMBJ54AHE3/5B suitable for automotive applications?
Yes, SMBJ54AHE3/5B is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. This makes SMBJ54AHE3/5B appropriate for use in automotive body control modules, infotainment power rails, and other non-safety-critical but reliability-demanding vehicle subsystems.
How does the HE3 suffix in SMBJ54AHE3/5B differ from the E3 suffix?
The HE3 suffix in SMBJ54AHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification, whereas E3 indicates RoHS compliance only, without automotive qualification. Both share identical electrical parameters and SMB package dimensions, but SMBJ54AHE3/5B undergoes additional reliability validation required for automotive deployment.
What is the thermal resistance of SMBJ54AHE3/5B, and how does it affect layout design?
SMBJ54AHE3/5B 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 junction temperatures under repeated surges, PCB layout must provide adequate copper area (minimum 0.2" × 0.2" per pad) and avoid thermal bottlenecks-especially critical in enclosed industrial enclosures where ambient temperature may exceed 70 °C.
Can SMBJ54AHE3/5B be used in bidirectional protection circuits?
No, SMBJ54AHE3/5B is a unidirectional TVS diode, intended for clamping only positive-going transients on a referenced rail (e.g., DC+ to ground). For bidirectional protection-such as AC signal lines or floating buses-use the CA-suffixed variant (e.g., SMBJ54CA), which provides symmetrical clamping in both polarities and is explicitly characterized for dual-direction operation.
SMBJ54AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ54AHE3/5B FAQ
1.How can I place an order for SMBJ54AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54AHE3/5B 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 SMBJ54AHE3/5B reliable?
The price and inventory of SMBJ54AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ54AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54AHE3/5B?
SMBJ54AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54AHE3/5B 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 SMBJ54AHE3/5B?
For technical support, including SMBJ54AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54AHE3/5B requirements.
6.How does Aetrix verify that SMBJ54AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ54AHE3/5B 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 SMBJ54AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ54AHE3/5B?
All SMBJ54AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54AHE3/5B, 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 SMBJ54AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ54AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54AHE3/5B Tags
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