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Vishay General Semiconductor - Diodes Division SMBJ54CA-M3/5B
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- Part No.:
- SMBJ54CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54CA-M3/5B.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,823
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Product details
Overview
SMBJ54CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 87.1 V maximum clamping voltage (VC) at 6.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the SMBJ54CA-M3/5B datasheet, SMBJ54CA-M3/5B pinout, SMBJ54CA-M3/5B application, or SMBJ54CA-M3/5B equivalent, key selection considerations include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.61), halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on PCBs requiring robust surge immunity per IEC 61000-4-2/4-4/4-5.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ps), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01% duty cycle.
The device is rated for -55 °C to +150 °C operating junction temperature, exhibits 0.104 %/°C temperature coefficient of VBR, and meets MSL Level 1 per J-STD-020 with peak reflow temperature up to 260 °C - confirming suitability for lead-free assembly without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse stand-off voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - verified breakdown range ensuring predictable turn-on during overvoltage events |
| VC @ IPPM | 87.1 V at 6.9 A - clamping voltage limits downstream component stress during 600 W transient surges |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform, supporting industrial-level surge immunity |
| IPPM | 6.9 A - peak pulse current capacity derived from 600 W / 87.1 V; determines minimum trace width and layout robustness |
| TJ max. | +150 °C - maximum junction temperature enabling operation in high-ambient environments like motor drives or power supplies |
| Package | SMB (DO-214AA) - standardized 2-pin surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height for compact board space |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; symmetrical terminals suitable for AC-coupled or floating signal line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | Accepts surge current in either direction; connects to protected line without orientation constraint |
| Anode | Transient current exit (either polarity) | Completes low-impedance path to ground or return rail during clamping; no cathode/anode distinction in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns |
| 600 W peak pulse power | Supports compliance with IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) when properly laid out |
| Halogen-free, RoHS-compliant (M3) | Meets environmental requirements for automotive and industrial end equipment; qualified per JESD201 Class 2 whisker test |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and direct placement into lead-free reflow without baking preconditioning |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes voltage overshoot during transients, reducing risk of latch-up or gate oxide damage in protected ICs |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing lines against inductive kickback from BLDC motor windings. IC Role / Device Role / Timing Role: Bidirectional TVS placed across isolated gate drive transformer secondary or analog sensor supply inputs. Use Value: Clamps 87.1 V surges within nanoseconds, preventing MOSFET gate oxide failure and maintaining closed-loop control integrity during fault conditions. |
Use Scenario: Shielding LIN bus transceivers and pressure/temperature sensor outputs from battery dump and load-dump transients. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on sensor harness input, positioned before ESD diode arrays and filtering RC networks. Use Value: Withstands 600 W pulses per ISO 7637-2 Pulse 5a while maintaining 54 V stand-off for accurate 5 V sensor reference stability. |
| Telecom Power Feeds | Consumer USB-C PD Ports |
|
Use Scenario: Safeguarding PoE-powered Ethernet switches against lightning-induced common-mode surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Bidirectional clamp on DC input rail upstream of DC-DC converters and hot-swap controllers. Use Value: Limits voltage excursions to ≤87.1 V during 10/1000 µs surges, preserving converter FET reliability and avoiding brownout resets. |
Use Scenario: Secondary-level transient suppression on VBUS lines after primary ESD protection in USB-C power delivery circuits. IC Role / Device Role / Timing Role: Standoff-rated TVS between VBUS and GND to absorb residual surges escaping upstream TVS or ESD arrays. Use Value: Provides 54 V hold-off for 20 V PD 3.0 operation while clamping 600 W transients - critical for protecting buck-boost controller 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 |
|---|---|---|---|
| SMBJ54CA-E3/5B | Same electrical specs and SMB package; RoHS-compliant but not halogen-free (E3 vs. M3) | Approved for commercial-grade use only; lacks JESD201 Class 2 whisker resistance certification | Select when halogen-free requirement is not mandated and cost optimization is prioritized |
| SMCJ54CA-M3 | Higher 1500 W PPPM, same VWM/VC; larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) | Used where higher surge margin is needed (e.g., outdoor telecom cabinets); requires PCB area increase | Choose when system-level surge testing exceeds 600 W or when longer transient duration (e.g., 8/20 µs) dominates |
Compared with SMBJ54CA-E3/5B, the SMBJ54CA-M3/5B adds halogen-free compliance and whisker resistance for harsh environments; versus SMCJ54CA-M3, it trades surge capacity for 40% smaller PCB footprint - making SMBJ54CA-M3/5B optimal for space-constrained industrial modules needing certified green materials.
Availability
SMBJ54CA-M3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer USB-C PD ports requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ54CA-M3/5B 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, and protection devices with emphasis on reliability, thermal performance, and application-specific qualification.
The SMBJ series was engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping behavior across temperature and lifetime under repetitive surge stress.
FAQ
What is the clamping voltage of SMBJ54CA-M3/5B at its rated peak pulse current?
The SMBJ54CA-M3/5B has a maximum clamping voltage (VC) of 87.1 V at 6.9 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting during surge events. The SMBJ54CA-M3/5B maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) without derating.
Is SMBJ54CA-M3/5B suitable for automotive applications?
The SMBJ54CA-M3/5B itself is commercial-grade and not AEC-Q101 qualified; however, it shares identical electrical and mechanical specifications with the AEC-Q101-qualified variant SMBJ54CAHM3_B/I. For non-safety-critical automotive subsystems (e.g., infotainment power rails), SMBJ54CA-M3/5B may be used subject to internal qualification. The SMBJ54CA-M3/5B is halogen-free and RoHS-compliant, meeting baseline material requirements for automotive supply chains.
How does the bidirectional design of SMBJ54CA-M3/5B affect PCB layout?
The SMBJ54CA-M3/5B has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies automated assembly and allows use on AC-coupled lines, differential pairs, or floating grounds without concern for anode/cathode alignment. Layout must still follow Vishay's recommended 0.2" × 0.2" copper pad per terminal to sustain 600 W pulse dissipation - a requirement unchanged from unidirectional variants.
What is the thermal resistance of SMBJ54CA-M3/5B, and how does it impact power handling?
The SMBJ54CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. These values define steady-state power dissipation limits: at 25 °C ambient, its 5.0 W continuous power rating (PD) is thermally constrained, not electrically. During transient events, the 600 W PPPM rating applies only for short durations (<50 ms), relying on thermal mass rather than sustained convection cooling - so PCB copper area directly influences real-world surge margin.
Does SMBJ54CA-M3/5B meet any international surge immunity standards?
The SMBJ54CA-M3/5B is characterized to support compliance with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) when integrated into a properly designed circuit. Its 600 W PPPM rating aligns with Level 3 (2 kV line-to-ground) per IEC 61000-4-5 using 10/1000 µs waveform. System-level validation remains required, but the SMBJ54CA-M3/5B provides the foundational clamping performance needed to pass these tests in conjunction with proper layout and filtering.
SMBJ54CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ54CA-M3/5B FAQ
1.How can I place an order for SMBJ54CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54CA-M3/5B 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 SMBJ54CA-M3/5B reliable?
The price and inventory of SMBJ54CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ54CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54CA-M3/5B?
SMBJ54CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54CA-M3/5B 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 SMBJ54CA-M3/5B?
For technical support, including SMBJ54CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ54CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ54CA-M3/5B 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 SMBJ54CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ54CA-M3/5B?
All SMBJ54CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54CA-M3/5B, 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 SMBJ54CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ54CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54CA-M3/5B Tags
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