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Vishay General Semiconductor - Diodes Division SMCJ54C-E3/9AT
- Part No.:
- SMCJ54C-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54C-E3/9AT.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
SMCJ54C-E3/9AT from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection on signal and power lines. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps transients to ≤87.1 V at 17.2 A, commonly used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCJ54C-E3/9AT datasheet, SMCJ54C-E3/9AT pinout, SMCJ54C-E3/9AT application, or SMCJ54C-E3/9AT equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, 1500 W surge rating with 10/1000 µs waveform, low incremental surge resistance, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly.
Technical Context
The SMCJ54C-E3/9AT operates as a bi-directional avalanche diode, symmetrically clamping voltage surges above its breakdown threshold in both polarities without polarity marking. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ps), enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
Thermally, it supports operation from –55 °C to +150 °C with a junction-to-ambient thermal resistance of 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 60.0 V / 66.3 V at 1.0 mA - Confirmed breakdown range ensuring reliable turn-on under surge conditions |
| VC @ IPPM | ≤87.1 V at 17.2 A - Clamped voltage during 10/1000 µs surge, defining maximum stress on protected circuitry |
| PPPM | 1500 W - Peak pulse power handling capacity for standardized transient waveforms |
| ID @ VWM | ≤1.0 µA - Low leakage current preserving signal integrity in high-impedance circuits |
| TJ max | +150 °C - Maximum junction temperature enabling use in under-hood automotive and industrial environments |
| Package | DO-214AB (SMCJ) - Surface-mount outline with 0.320" body length, optimized for automated placement and thermal dissipation |
Pinout & Package
DO-214AB (SMCJ) package: surface-mount, bi-directional device with no polarity marking; two terminals-cathode/anode are functionally interchangeable due to symmetrical construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; forms one side of symmetrical clamping path |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive transients; completes bidirectional clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling and humidity stress |
| MSL Level 1 (260 °C) | Enables standard lead-free reflow soldering without moisture-related damage or popcorn effect |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for downstream ICs |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical industrial and transportation systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed directly at connector interface to shunt transients before reaching sensitive analog front-ends or communication ICs. Use Value: Maintains signal integrity by limiting clamped voltage to ≤87.1 V while surviving 1500 W surges, meeting ISO 7637-2 Pulse 1/2/5a requirements. | Use Scenario: Safeguarding digital input/output channels on programmable logic controllers against inductive kickback from solenoids, relays, and motor drives. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor mounted adjacent to terminal blocks to absorb repetitive switching surges without degradation. Use Value: Withstands ≥1000 surges at rated PPPM and exhibits <1.0 µA leakage at 54 V, preventing false triggering in 24 V DC control circuits. |
| Telecom Line Interface Protection | Consumer Power Adapter Surge Suppression |
Use Scenario: Shielding Ethernet PHYs, RS-485 transceivers, and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level bi-directional TVS on differential pair lines, coordinated with GDT or MOV secondary protection. Use Value: Fast sub-nanosecond response and symmetrical clamping ensure balanced differential line protection without skew or common-mode distortion. | Use Scenario: Adding secondary-side surge immunity to AC-DC adapters and USB-C PD power supplies exposed to mains-borne transients. IC Role / Device Role / Timing Role: Clamp placed across DC output rails (e.g., 54 V auxiliary supply) to prevent overvoltage damage to connected devices. Use Value: 1500 W rating and 87.1 V clamping enable compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) testing without derating. |
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-E3/52T | Lower PPPM (600 W), smaller SMB package (DO-214AA), same VWM/VBR range | Suitable for space-constrained consumer electronics but not for high-energy industrial surges | Select when board area is limited and surge energy does not exceed 600 W |
| SMCJ54CAHE3/9AT | Identical electrical specs; AEC-Q101 qualified version with enhanced whisker resistance (JESD 201 Class 2) | Required for automotive production where extended reliability and tin whisker mitigation are mandated | Choose for Tier-1 automotive programs requiring full AEC-Q101 documentation and process traceability |
Compared with SMCJ54C-E3/9AT, SMBJ54CA-E3/52T offers footprint reduction at the cost of 60% lower surge power handling, while SMCJ54CAHE3/9AT delivers identical protection performance with certified automotive-grade process controls and whisker resistance-making it the preferred upgrade path for safety-critical deployments.
Availability
SMCJ54C-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and consistent surge performance across production batches.
Supply support for SMCJ54C-E3/9AT 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 optimization.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments-including automotive, industrial automation, and telecommunications infrastructure-where AEC-Q101 qualification and repeatable clamping performance are mandatory.
FAQ
What is the polarity configuration of the SMCJ54C-E3/9AT?
The SMCJ54C-E3/9AT is a bi-directional TVS diode with symmetrical clamping characteristics in both polarities. It has no cathode band or polarity marking on the DO-214AB package, confirming its intended use in AC-coupled or floating signal lines where voltage transients may occur in either direction. This design eliminates orientation concerns during automated placement and simplifies PCB layout for differential or ungrounded interfaces.
Does the SMCJ54C-E3/9AT meet automotive qualification standards?
Yes, the SMCJ54C-E3/9AT is RoHS-compliant and manufactured to commercial-grade specifications. While it shares the same die and package as AEC-Q101-qualified variants like SMCJ54CAHE3/9AT, the "E3" suffix alone indicates commercial grade. For automotive production, engineers must specify the "HE3" suffix variant to obtain full AEC-Q101 certification documentation and process validation required by Tier-1 suppliers.
What is the clamping voltage of the SMCJ54C-E3/9AT under a 10/1000 µs surge?
The SMCJ54C-E3/9AT clamps to a maximum of 87.1 V when subjected to its rated peak pulse current of 17.2 A (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions with 0.31" × 0.31" copper pads per terminal and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events.
Can the SMCJ54C-E3/9AT be used in place of a unidirectional TVS like SMCJ54A-E3/9AT?
No-the SMCJ54C-E3/9AT is bi-directional and lacks polarity marking, whereas SMCJ54A-E3/9AT is unidirectional with a cathode band and only clamps in reverse bias. Substituting them requires verifying circuit topology: SMCJ54C-E3/9AT is appropriate for AC lines or floating nodes, while SMCJ54A-E3/9AT suits DC rails where forward conduction must be blocked. Interchange introduces risk of unintended conduction or inadequate protection.
What is the thermal resistance and recommended pad layout for optimal performance of the SMCJ54C-E3/9AT?
The SMCJ54C-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain reliability under repeated surges, designers should adhere to this pad size, use solid inner-layer copper pours connected via multiple thermal vias, and avoid excessive trace length between the device and protected node to minimize inductance-induced voltage overshoot.
SMCJ54C-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 96.3V
- Current - Peak Pulse (10/1000µs):
- 15.6A
- 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 (SMCJ)
SMCJ54C-E3/9AT FAQ
1.How can I place an order for SMCJ54C-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54C-E3/9AT 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 SMCJ54C-E3/9AT reliable?
The price and inventory of SMCJ54C-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54C-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ54C-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54C-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54C-E3/9AT?
SMCJ54C-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54C-E3/9AT 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 SMCJ54C-E3/9AT?
For technical support, including SMCJ54C-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54C-E3/9AT requirements.
6.How does Aetrix verify that SMCJ54C-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ54C-E3/9AT 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 SMCJ54C-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ54C-E3/9AT?
All SMCJ54C-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54C-E3/9AT, 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 SMCJ54C-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ54C-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54C-E3/9AT Tags
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