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Vishay General Semiconductor - Diodes Division SMCJ54A-M3/57T
- Part No.:
- SMCJ54A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54A-M3/57T.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,903
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Product details
Overview
SMCJ54A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR at 1.0 mA), 87.1 V maximum clamping voltage (VC) at 17.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMCJ54A-M3/57T datasheet, SMCJ54A-M3/57T pinout, SMCJ54A-M3/57T application, or SMCJ54A-M3/57T equivalent, key selection considerations include its halogen-free RoHS-compliant construction (M3 suffix), unidirectional polarity with cathode band marking, 150 °C max junction temperature, and suitability for automotive-grade designs when paired with AEC-Q101 qualified variants.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 54 V and rapidly transitions to low-impedance conduction above VBR = 60.0–66.3 V to limit transient overvoltages. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable breakdown behavior across temperature.
The SMCJ54A-M3/57T delivers 1500 W peak pulse power handling per 10/1000 µs waveform under standard mounting conditions (8.0 mm × 8.0 mm copper pads), with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - enabling effective heat dissipation in compact PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail protection threshold. |
| VBR (min/max) | 60.0 V / 66.3 V at 1.0 mA - Confirmed breakdown range ensuring reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamped voltage seen by protected circuit during full 1500 W surge; determines downstream component stress. |
| PPPM | 1500 W - Peak pulse power capability with 10/1000 µs waveform; supports high-energy ESD and load-switching transients. |
| IPPM | 17.2 A - Corresponding peak pulse current at VC; used to size series impedance and verify PCB trace current capacity. |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive or industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated placement. |
Pinout & Package
SMCJ54A-M3/57T uses the SMC (DO-214AB) package: a two-terminal, surface-mount case with matte tin-plated leads, polarity indicated by a cathode band on the unidirectional device. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated power derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential node; completes clamping path during positive transients on cathode side. |
| Cathode | High-side connection point | Connected to protected line (e.g., 54 V rail); conducts surge current to anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction (M3 suffix) | Meets environmental compliance requirements for industrial and automotive supply chains without compromising surge robustness. |
| Very fast response time (<1 ps) | Clamps transients before sensitive ICs experience damaging overvoltage - critical for protecting microcontrollers and sensors. |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events, improving clamping precision and reducing stress on downstream components. |
| MSL Level 1 (J-STD-020), 260 °C reflow peak | Supports standard lead-free reflow assembly without preconditioning or special handling. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage performance across temperature cycling and humidity exposure. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V–60 V battery-fed ECUs and body control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground to shunt surge energy away from PMICs and CAN transceivers. Use Value: Withstands 1500 W surges while limiting clamped voltage to 87.1 V - well below typical 100 V absolute maximum ratings of automotive-grade regulators. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal lines to suppress fast-rising EFT bursts without distorting millivolt-level signals. Use Value: Sub-1 µA leakage at 54 V ensures minimal offset error; fast response preserves signal integrity during 100 ns–1 µs transients. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
Use Scenario: Securing 48 V PoE-powered equipment inputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary-stage TVS on DC input before DC-DC converter, coordinated with upstream fuses and secondary TVS stages. Use Value: 1500 W rating handles Category 4 surge levels (IEC 61000-4-5); SMC package enables dense layout near connector entry points. |
Use Scenario: Overvoltage protection on 5 V–24 V DC input jacks of smart home hubs and portable audio devices. IC Role / Device Role / Timing Role: Standalone unidirectional clamp on input rail to prevent damage from incorrect adapter insertion or power supply faults. Use Value: 54 V VWM provides margin above 24 V nominal rails; halogen-free M3 suffix meets global consumer product material restrictions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-M3/57T | Lower 400 W peak pulse power rating; same VWM, VBR, and package. | Restricted to lower-energy transients (e.g., ESD-only, not load dump). | Select when system-level surge testing does not exceed 400 W and cost optimization is prioritized. |
| SMCJ54CA-M3/57T | Bidirectional variant with identical VWM/VBR specs but symmetrical clamping in both polarities. | Required for AC-coupled or floating signal lines where reverse polarity surges occur. | Choose only if bidirectional protection is mandated - unidirectional SMCJ54A-M3/57T offers better cost and layout efficiency for DC rails. |
Compared with SMAJ54A-M3/57T, the SMCJ54A-M3/57T provides 275 % higher surge power headroom for demanding automotive and industrial use cases; versus SMCJ54CA-M3/57T, it avoids unnecessary bidirectional complexity and cost where polarity is fixed.
Availability
SMCJ54A-M3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power supplies, and consumer DC input protection requiring stable component supply and halogen-free compliance.
Supply support for SMCJ54A-M3/57T 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, power efficiency, and automotive qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting design-in for automotive, industrial, and telecom infrastructure where robustness and long-term stability are non-negotiable.
FAQ
What is the maximum clamping voltage of the SMCJ54A-M3/57T under full-rated surge conditions?
The SMCJ54A-M3/57T has a maximum clamping voltage (VC) of 87.1 V at 17.2 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and represents the upper bound of voltage imposed on the protected circuit during worst-case transient events. The SMCJ54A-M3/57T maintains this clamping performance consistently across its specified operating temperature range.
Does the SMCJ54A-M3/57T meet AEC-Q101 qualification?
No, the SMCJ54A-M3/57T is a commercial-grade, halogen-free RoHS-compliant part (M3 suffix) but is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101 validation, Vishay offers the SMCJ54A-HM3_X variant, which shares identical electrical specifications and SMC package but adds formal qualification per AEC-Q101 stress test requirements. The SMCJ54A-M3/57T remains suitable for industrial and telecom designs where AEC-Q101 is not mandated.
How does the M3 suffix affect the SMCJ54A-M3/57T's environmental compliance and assembly process?
The M3 suffix indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability standards. It also satisfies JESD 201 Class 2 whisker resistance. These attributes ensure compatibility with lead-free reflow profiles (peak 260 °C, MSL Level 1), eliminate brominated flame retardants, and align with global material restrictions for consumer and industrial products. The SMCJ54A-M3/57T requires no special handling beyond standard SMC package reflow guidelines.
Can the SMCJ54A-M3/57T be used in bidirectional signal protection applications?
No - the SMCJ54A-M3/57T is a unidirectional TVS diode, with polarity marked by a cathode band and intended for DC rail protection where surge polarity is known and fixed. For bidirectional signal lines (e.g., RS-485, CAN, AC-coupled analog), the SMCJ54CA-M3/57T variant must be used instead. Using the unidirectional SMCJ54A-M3/57T in bidirectional contexts risks failure during negative-going transients, as it lacks reverse conduction capability. Always match device polarity to system signal architecture.
What is the thermal resistance profile of the SMCJ54A-M3/57T, and how does it impact PCB layout?
The SMCJ54A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. To maintain reliability under repeated surges, PCB layout must provide adequate copper area for heat spreading - minimum pad dimensions are specified in the datasheet. Reducing pad size increases RθJA, lowering safe surge repetition rate and accelerating thermal degradation. The SMCJ54A-M3/57T does not require heatsinks but depends critically on proper copper thermal management.
SMCJ54A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 17.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ54A-M3/57T FAQ
1.How can I place an order for SMCJ54A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54A-M3/57T 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 SMCJ54A-M3/57T reliable?
The price and inventory of SMCJ54A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ54A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54A-M3/57T?
SMCJ54A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54A-M3/57T 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 SMCJ54A-M3/57T?
For technical support, including SMCJ54A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54A-M3/57T requirements.
6.How does Aetrix verify that SMCJ54A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ54A-M3/57T 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 SMCJ54A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ54A-M3/57T?
All SMCJ54A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54A-M3/57T, 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 SMCJ54A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ54A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54A-M3/57T Tags
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