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Vishay General Semiconductor - Diodes Division SMBJ54D-M3/H
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- Part No.:
- SMBJ54D-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54D-M3/H.pdf
- Description:
- TVS DIODE 54VWM 85.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,653
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Product details
Overview
SMBJ54D-M3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 54 V stand-off voltage (VWM), 60.9–65.4 V breakdown voltage (VBR) at 1 mA, 85.9 V maximum clamping voltage (VC) at 7.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMBJ54D-M3/H datasheet, SMBJ54D-M3/H pinout, SMBJ54D-M3/H application, or SMBJ54D-M3/H equivalent, this part is selected for robust overvoltage protection in DC power rails, sensor interfaces, and MOSFET gate drivers where tight VBR tolerance (±3.5 %), low leakage (<0.5 μA at VWM), and MSL Level 1 reflow compatibility are critical.
Technical Context
This TVS diode operates as a unidirectional clamping device, conducting only when reverse voltage exceeds its specified breakdown threshold. Its silicon avalanche structure delivers sub-nanosecond response time and low incremental surge resistance to limit transient energy before downstream components are stressed.
Rated for 150 °C maximum junction temperature and compliant with UL 497B (QVGQ2 recognition), SMBJ54D-M3/H supports industrial-grade reliability with halogen-free, RoHS-compliant construction, matte tin-plated leads, and JESD 201 Class 2 whisker resistance - all validated under JEDEC-standard thermal and mechanical stress profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe DC operating margin. |
| VBR (Breakdown Voltage) | 60.9–65.4 V at 1.0 mA - Tight ±3.5 % tolerance ensures predictable clamping onset across production lots. |
| VC (Clamping Voltage) | 85.9 V at 7.0 A IPPM - Limits peak voltage seen by protected circuit during 10/1000 μs surge event. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized 10/1000 μs surge without failure; derates linearly above 25 °C ambient. |
| ID (Reverse Leakage) | <0.5 μA at 54 V - Minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated assembly; meets IPC-7351B standard pad layout. |
| Thermal Resistance | RθJA = 125 °C/W (min. pad), RθJM = 20 °C/W - Enables thermal design with known junction-to-ambient and junction-to-mount limits. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band on one end; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded end) | Low-side reference terminal | Connected to ground or lowest potential node; completes conduction path during transient clamp event. |
| Cathode (banded end) | High-side transient input terminal | Connected to protected line (e.g., +54 V rail); avalanche conduction initiates here when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Ensures consistent clamping threshold across batches, reducing design margin uncertainty in safety-critical protection schemes. |
| 600 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly mounted. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning; eliminates moisture-related popcorning risk during PCB assembly. |
| UL 497B recognized (QVGQ2) | Validated for telecom and industrial surge protection applications requiring third-party safety certification. |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for global OEM shipments without compromising surge performance. |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Protection of gate drivers and logic inputs against inductive kickback from solenoid valves and relay coils in PLC I/O modules. IC Role / Device Role: Unidirectional TVS placed between driver output and ground to clamp negative-going transients below MOSFET VGS(max). Use Value: Prevents gate oxide damage and latch-up in 54 V-rated power management ICs during 100 A coil de-energization events. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role: Standoff-rated TVS on 12 V auxiliary rails feeding door module microcontrollers and Hall-effect sensors. Use Value: Maintains 54 V standoff while clamping 85.9 V max during ISO 7637-2 Pulse 5a (load dump), preserving system uptime. |
| Telecom Power Supply | Consumer Appliance Control Board |
Use Scenario: Secondary-side overvoltage protection on 48 V DC-DC converter outputs feeding PoE-powered equipment interfaces. IC Role / Device Role: Primary clamping element on regulated output rail, coordinated with upstream OVP IC for redundancy. Use Value: Limits fault voltage to 85.9 V during short-circuit-induced transformer flyback spikes, protecting Ethernet PHY ICs. |
Use Scenario: Input protection for microcontroller GPIOs connected to external buttons, displays, and AC zero-crossing detectors. IC Role / Device Role: Low-leakage (0.5 μA) TVS on 5 V or 3.3 V logic rails to suppress ESD from user interaction and EMI coupling. Use Value: Prevents MCU reset or latch-up during 8 kV contact ESD per IEC 61000-4-2, with no impact on sleep-mode current budget. |
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/H | Bidirectional variant; symmetric VBR (60.9–65.4 V) in both polarities; same VC (85.9 V) and PPPM (600 W). | Required where AC-coupled or floating lines (e.g., RS-485, audio) need protection against bipolar transients. | Select SMBJ54A-M3/H only if bidirectional clamping is mandated; SMBJ54D-M3/H is preferred for DC rails with defined polarity. |
| SMCJ54A | Larger SMC (DO-214AB) package; higher thermal mass; identical electrical specs but 1500 W PPPM rating and lower RθJA (50 °C/W). | Suitable for higher-energy surge environments (e.g., outdoor telecom cabinets) where board space allows larger footprint. | Choose SMCJ54A only when 1500 W surge handling is required; SMBJ54D-M3/H offers optimal density for space-constrained designs. |
Compared with SMBJ54A-M3/H and SMCJ54A, SMBJ54D-M3/H provides the best balance of compact SMB footprint, precise unidirectional clamping, and industrial-grade reliability - making it ideal for high-volume DC power rail protection where layout area and polarity control are fixed constraints.
Availability
SMBJ54D-M3/H is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom power supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMBJ54D-M3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.
The SMBJ series is engineered specifically for surface-mount transient suppression in harsh environments, delivering repeatable clamping performance, tight parametric tolerances, and certified safety compliance across extended temperature ranges.
FAQ
What is the maximum clamping voltage of SMBJ54D-M3/H at its rated peak pulse current?
The SMBJ54D-M3/H has a maximum clamping voltage (VC) of 85.9 V at 7.0 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value defines the highest voltage that will appear across the protected circuit during a full-rated surge event, ensuring downstream components remain within safe operating limits. The SMBJ54D-M3/H maintains this clamping performance consistently due to its low incremental surge resistance and controlled avalanche characteristics.
Is SMBJ54D-M3/H suitable for use in automotive applications requiring AEC-Q200 qualification?
SMBJ54D-M3/H is not AEC-Q200 qualified; it is an industrial-grade TVS diode rated for -55 °C to +150 °C operating junction temperature and UL 497B recognized, but lacks the stress-test validation required for automotive electronic modules. For AEC-Q200-compliant alternatives, engineers should consider Vishay's Automotive Grade SMBJ series (e.g., SMBJ54DHE3_A/H) or consult Aetrix for qualified replacements. SMBJ54D-M3/H remains appropriate for non-safety-critical automotive body electronics where customer-specific qualification is performed.
How does the M3 suffix affect the material composition and assembly process of SMBJ54D-M3/H?
The M3 suffix on SMBJ54D-M3/H indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements. This enables reliable lead-free reflow soldering at up to 260 °C peak temperature (MSL Level 1), eliminates post-assembly cleaning concerns, and satisfies environmental regulations for global OEM shipments. The M3 designation confirms full compliance - not just partial - with IPC-1752 material declaration standards.
Can SMBJ54D-M3/H be used in parallel to increase surge current handling?
No - SMBJ54D-M3/H must not be paralleled to increase IPPM. Due to manufacturing variations in VBR (60.9–65.4 V), uneven current sharing occurs during transients, causing one device to dominate conduction and potentially fail prematurely. For higher surge capability, select a single higher-rated device such as SMCJ54A (1500 W) or SMAJ54A (400 W), or implement staged protection with upstream current-limiting resistors and downstream TVS devices. The SMBJ54D-M3/H datasheet explicitly prohibits parallel operation without derating and matching.
What is the thermal resistance from junction to ambient for SMBJ54D-M3/H under standard PCB mounting conditions?
The typical junction-to-ambient thermal resistance (RθJA) of SMBJ54D-M3/H is 125 °C/W when mounted on the minimum recommended pad layout per Vishay's datasheet (Document Number: 87606). This value assumes a 0.086" × 0.086" (2.18 mm × 2.18 mm) copper pad on a 1-oz FR-4 board. For improved thermal performance, mounting on a 5.0 mm × 5.0 mm copper area reduces RθJA to 100 °C/W. Accurate thermal modeling of SMBJ54D-M3/H requires using these published values - not generic estimates - to avoid junction overheating during repetitive surge events.
SMBJ54D-M3/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60.9V
- Voltage - Clamping (Max) @ Ipp:
- 85.9V
- Current - Peak Pulse (10/1000µs):
- 7A
- 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)
SMBJ54D-M3/H FAQ
1.How can I place an order for SMBJ54D-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54D-M3/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 SMBJ54D-M3/H reliable?
The price and inventory of SMBJ54D-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54D-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ54D-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54D-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54D-M3/H?
SMBJ54D-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54D-M3/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 SMBJ54D-M3/H?
For technical support, including SMBJ54D-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54D-M3/H requirements.
6.How does Aetrix verify that SMBJ54D-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ54D-M3/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 SMBJ54D-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ54D-M3/H?
All SMBJ54D-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54D-M3/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 SMBJ54D-M3/H part is unused and in its original packaging.
Return procedure for SMBJ54D-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54D-M3/H Tags
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