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Vishay General Semiconductor - Diodes Division SMBJ54AHM3_A/H
- Part No.:
- SMBJ54AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54AHM3_A/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,055
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Product details
Overview
SMBJ54AHM3_A/H 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, 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 on power rails and signal lines in industrial motor drives.
For engineers reviewing the SMBJ54AHM3_A/H datasheet, SMBJ54AHM3_A/H pinout, SMBJ54AHM3_A/H application, or SMBJ54AHM3_A/H equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance under surge conditions - critical for automotive ECU, telecom interface, and industrial I/O protection design.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its unidirectional polarity enables integration into DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded.
The device complies with ANSI/IEEE C62.35 standards for surge suppression and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C lead-free reflow capability. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation under repetitive 0.01% duty cycle pulses when mounted per recommended 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - guaranteed breakdown onset range; ensures predictable clamping initiation. |
| VC @ IPPM | 87.1 V at 6.9 A - clamped voltage during 600 W 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 600 W - peak pulse power handling capacity; supports high-energy transients without failure. |
| IFSM | 100 A - non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against inrush or fault currents. |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and cathode band marking. |
Pinout & Package
SMBJ54AHM3_A/H is housed in an SMB (DO-214AA) plastic package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity is marked by a cathode band on the body; terminal 1 = cathode, terminal 2 = anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band End) | Cathode | Connected to higher-potential side in unidirectional configuration; conducts when reverse voltage exceeds VBR. |
| 2 (Opposite End) | Anode | Connected to ground or lower-potential reference; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients common in industrial motor control and power supply inputs. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations and supports lead-free assembly without compromising thermal or electrical performance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for downstream ICs like microcontrollers and CAN transceivers. |
| MSL Level 1, 260 °C peak reflow | Allows single-pass lead-free reflow without moisture-related delamination or popcorn cracking. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects 12 V supply rail and LIN bus lines from load dump and alternator ripple in BCM units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp transients up to ISO 7637-2 Pulse 5a. Use Value: Limits clamped voltage to ≤87.1 V, preventing damage to 5 V LDOs and 3.3 V microcontrollers downstream. |
Use Scenario: Shields 24 V digital input channels from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Mounted across input terminals to absorb 1 kV/500 A surge per IEC 61000-4-5 Level 4. Use Value: Delivers 600 W pulse handling with <1 ps response, ensuring logic-level integrity during surge events. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Driver Board |
|
Use Scenario: Guards AC/DC adapter output against lightning-induced surges entering via PoE or external ports. IC Role / Device Role / Timing Role: Unidirectional clamping device on +48 V DC output rail prior to DC-DC converters. Use Value: Maintains VC ≤87.1 V under 600 W surge, preserving isolation barrier integrity and secondary-side regulation. |
Use Scenario: Suppresses back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Placed across motor terminals to divert inductive kickback energy away from H-bridge MOSFETs. Use Value: Withstands 100 A single-half-sine surge (8.3 ms), preventing gate oxide rupture and latch-up in driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54AHE3_A/H | RoHS-compliant but not halogen-free; same VWM, VBR, PPPM, and package. | Lacks halogen-free certification required for certain EU industrial and medical equipment. | Select when halogen-free compliance is not mandated and cost optimization is prioritized. |
| SMBJ54A-M3/5B | Same electrical specs; supplied in 13" tape-and-reel (3200 pcs) vs. 7" reel (750 pcs) for SMBJ54AHM3_A/H. | Identical performance but different packaging format impacts SMT line feed compatibility and inventory planning. | Choose for high-volume automated assembly requiring larger reels and extended production runs. |
Compared with SMBJ54AHM3_A/H, the HE3 variant trades halogen-free compliance for lower unit cost, while the M3/5B version offers identical specs in a higher-quantity reel format - both require no PCB layout change but differ in environmental certification and logistics handling.
Availability
SMBJ54AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and consumer appliance motor control systems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMBJ54AHM3_A/H 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 validation.
The SMBJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where AEC-Q101 qualification and 600 W pulse capability are mandatory.
FAQ
What is the clamping voltage of SMBJ54AHM3_A/H at its rated peak pulse current?
The SMBJ54AHM3_A/H has a maximum clamping voltage (VC) of 87.1 V at its 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 circuitry during surge events. The SMBJ54AHM3_A/H maintains this clamping performance across its specified operating temperature range.
Is SMBJ54AHM3_A/H qualified for automotive applications?
Yes, SMBJ54AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet revision 09-Jan-2024. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating its suitability for under-hood and body electronics in passenger vehicles and commercial vehicles.
What does the "HM3" suffix indicate in SMBJ54AHM3_A/H?
The "HM3" suffix in SMBJ54AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS only), HE3 (RoHS + AEC-Q101), and M3 (halogen-free RoHS only) versions. The "_A/H" further specifies the revision code and 7" tape-and-reel packaging (750 pcs/reel), per Vishay's ordering information table.
How does SMBJ54AHM3_A/H compare to bidirectional TVS diodes like SMBJ54CA?
SMBJ54AHM3_A/H is unidirectional and blocks reverse current until VBR is exceeded, making it suitable for DC-biased lines. In contrast, SMBJ54CA is bidirectional with symmetrical clamping in both polarities - used in AC or floating signal paths. Their VWM and PPPM match, but SMBJ54AHM3_A/H cannot replace SMBJ54CA in AC-coupled applications without circuit redesign.
What is the thermal resistance of SMBJ54AHM3_A/H, and how does it affect layout?
SMBJ54AHM3_A/H 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 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal. Reducing pad area increases RθJA, risking thermal runaway during sustained pulse trains.
SMBJ54AHM3_A/H 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:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ54AHM3_A/H FAQ
1.How can I place an order for SMBJ54AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54AHM3_A/H 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 SMBJ54AHM3_A/H reliable?
The price and inventory of SMBJ54AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ54AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54AHM3_A/H?
SMBJ54AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54AHM3_A/H 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 SMBJ54AHM3_A/H?
For technical support, including SMBJ54AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54AHM3_A/H requirements.
6.How does Aetrix verify that SMBJ54AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ54AHM3_A/H 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 SMBJ54AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ54AHM3_A/H?
All SMBJ54AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54AHM3_A/H, 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 SMBJ54AHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ54AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54AHM3_A/H Tags
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