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Vishay General Semiconductor - Diodes Division SMBJ54CD-M3/H
- Part No.:
- SMBJ54CD-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54CD-M3/H.pdf
- Description:
- TVS DIODE 54VWM 85.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,832
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Product details
Overview
SMBJ54CD-M3/H from Vishay General Semiconductor is a bidirectional 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), 60.9–65.4 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), clamping voltage of 85.9 V at 7.0 A IPPM, and operates across –55 °C to +150 °C junction temperature range - deployed on signal lines and power rails in industrial sensor interfaces.
For engineers reviewing the SMBJ54CD-M3/H datasheet, SMBJ54CD-M3/H pinout, SMBJ54CD-M3/H application, or SMBJ54CD-M3/H equivalent, key selection criteria include bidirectional clamping capability, tight ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This TVS diode implements a silicon avalanche structure optimized for fast response (<1 ns) to transient surges induced by inductive switching or ESD events. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints, while the low incremental surge resistance ensures minimal voltage overshoot during high-current transients.
The device complies with ANSI/IEEE C62.35 for surge protector classification and meets UL 497B recognition (QVGQ2, E136766) for both unidirectional and bidirectional types. Thermal performance is characterized by RθJA = 125 °C/W on minimum pad layout and RθJM = 20 °C/W to mounting surface, supporting reliable operation under repetitive surge conditions up to 0.01 % duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 60.9 V / 65.4 V at 1 mA - tight ±3.5 % tolerance ensures predictable turn-on threshold |
| VC at IPPM | 85.9 V at 7.0 A - clamped voltage limits stress on downstream ICs during 10/1000 μs surge |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform, enabling protection against IEC 61000-4-5 Level 3 surges |
| ID at VWM | <0.5 μA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - supports operation in high-temperature industrial environments without derating |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and IPC-7351B standard land patterns |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking required. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102, with M3 suffix indicating halogen-free, RoHS-compliant, industrial-grade construction meeting JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Bidirectional conduction allows identical clamping in both directions - no orientation dependency during placement |
| Case (cathode band absent) | Thermal and mechanical interface | Exposed copper pad area (min. 5.0 mm × 5.0 mm) required for thermal dissipation per RθJM = 20 °C/W spec |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise coordination with system-level overvoltage thresholds without margin stacking |
| 600 W PPPM (10/1000 μs) | Supports protection against lightning-induced surges per IEC 61000-4-5 (4 kV line-to-line, 2 kV line-to-ground) |
| MSL Level 1 (260 °C peak) | Eliminates pre-bake requirement for reflow soldering, reducing manufacturing complexity |
| UL 497B recognized (E136766) | Validates compliance for telecom and industrial equipment safety certification without additional testing |
| Low ID <0.5 μA at VWM | Prevents signal distortion and DC bias shift in high-impedance analog sensor inputs |
Applications
| Industrial Sensor Signal Protection | Telecom Line Interface |
|---|---|
Use Scenario: Protecting 4–20 mA current loop outputs and RS-485 transceivers from ESD and load-switching transients in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching interface IC. Use Value: Maintains signal fidelity under repeated 8 kV contact ESD (IEC 61000-4-2) due to sub-1 ns response and 85.9 V clamping at 7 A. | Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers against induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary surge suppression stage in hybrid protection circuit with gas discharge tube (GDT) and PTC. Use Value: Enables UL 497B-compliant design (file E136766) with coordinated let-through voltage below 100 V for secondary protection devices. |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
Use Scenario: Shielding LIN bus nodes and CAN transceiver power rails from battery dump energy and load-dump transients. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after primary Zener or polymer-based suppression, absorbing residual energy post-GDT firing. Use Value: Withstands 150 °C junction temperature and maintains <0.5 μA leakage at 54 V, ensuring reliability in under-hood environments. | Use Scenario: Protecting microcontroller GPIOs and optocoupler inputs from back-EMF spikes generated by brushed DC motor commutation. IC Role / Device Role / Timing Role: Fast-acting shunt device placed across motor coil flyback path or logic-level control input. Use Value: 600 W peak power rating handles repetitive 100–500 ms inductive spikes without degradation, validated per JESD22-A114. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CA-M3/5B | Same VWM (54 V), identical SMB package, but M3/5B suffix indicates different reel packaging (5,000 pcs vs. 750 pcs) and minor process revision | No functional difference; same electrical specs and thermal ratings | Select when higher volume tape-and-reel delivery (5,000 pcs) is preferred over 750-qty H-reel format |
| P6SMB54CA | Same VWM/VBR/PPPM specs, but legacy ON Semiconductor part with identical SMB footprint and ±3.5 % VBR tolerance | Identical use cases; certified to same UL 497B standard (E136766) | Choose for dual-sourcing continuity where Vishay and ON Semi supply chains are both qualified |
Compared with SMBJ54CD-M3/H, SMBJ54CA-M3/5B offers identical protection performance in a larger reel configuration, while P6SMB54CA provides second-source assurance with full specification parity - both avoid PCB redesign and maintain thermal derating curves and clamping behavior.
Availability
SMBJ54CD-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ54CD-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and industrial-grade qualification.
The SMBJ series is engineered specifically for high-energy transient suppression in harsh environments, targeting applications demanding UL recognition, tight parametric tolerances, and extended temperature operation beyond commercial grade.
FAQ
What is the clamping voltage of SMBJ54CD-M3/H at its rated peak pulse current?
The SMBJ54CD-M3/H has a maximum clamping voltage (VC) of 85.9 V at its specified peak pulse current (IPPM) of 7.0 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components experience limited overvoltage stress during surge events. The SMBJ54CD-M3/H maintains this clamping performance across its full operating temperature range.
Is SMBJ54CD-M3/H suitable for bidirectional signal line protection?
Yes, SMBJ54CD-M3/H is explicitly designed for bidirectional applications, as indicated by the "CD" suffix. Its symmetrical avalanche structure provides identical breakdown and clamping characteristics in both polarities, making it ideal for protecting AC-coupled interfaces like RS-485, CAN FD, or audio lines. No cathode band is present - orientation during placement is irrelevant for SMBJ54CD-M3/H.
Does SMBJ54CD-M3/H meet UL safety certification requirements?
Yes, SMBJ54CD-M3/H is UL Recognized under standard UL 497B (file number E136766) for both unidirectional and bidirectional transient protectors. This certification validates its suitability in end-equipment requiring safety agency approval, including industrial controllers and telecom infrastructure. The UL listing applies directly to the SMBJ54CD-M3/H device as manufactured and tested by Vishay.
What is the thermal resistance of SMBJ54CD-M3/H when mounted on standard PCB pads?
When mounted on the minimum recommended pad layout (per Vishay's datasheet Figure 5), SMBJ54CD-M3/H exhibits a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W. For enhanced thermal performance, mounting on a 5.0 mm × 5.0 mm copper pad reduces RθJA to 100 °C/W, while junction-to-mount (RθJM) remains 20 °C/W - critical for sustained surge duty cycles.
How does the M3 suffix affect the specifications of SMBJ54CD-M3/H?
The M3 suffix on SMBJ54CD-M3/H denotes halogen-free, RoHS-compliant construction, industrial-grade qualification, and compliance with JESD201 Class 2 whisker resistance testing. It does not alter electrical parameters - VWM, VBR, VC, and PPPM remain identical to non-M3 variants. The M3 designation confirms material content and reliability attributes required for automotive and industrial deployments.
SMBJ54CD-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ54CD-M3/H FAQ
1.How can I place an order for SMBJ54CD-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54CD-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 SMBJ54CD-M3/H reliable?
The price and inventory of SMBJ54CD-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 SMBJ54CD-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ54CD-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54CD-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54CD-M3/H?
SMBJ54CD-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54CD-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 SMBJ54CD-M3/H?
For technical support, including SMBJ54CD-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54CD-M3/H requirements.
6.How does Aetrix verify that SMBJ54CD-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ54CD-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 SMBJ54CD-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ54CD-M3/H?
All SMBJ54CD-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54CD-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 SMBJ54CD-M3/H part is unused and in its original packaging.
Return procedure for SMBJ54CD-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54CD-M3/H Tags
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