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Vishay General Semiconductor - Diodes Division SMCJ54CA-E3/57T
- Part No.:
- SMCJ54CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CA-E3/57T.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,974
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Product details
Overview
SMCJ54CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 54 V standoff voltage (VWM), 60.0–66.3 V breakdown range (VBR), and 1500 W peak pulse power (10/1000 µs). It clamps transients to ≤87.1 V at 17.2 A peak current and operates from –55 °C to +150 °C junction temperature.
For engineers reviewing the SMCJ54CA-E3/57T datasheet, SMCJ54CA-E3/57T pinout, SMCJ54CA-E3/57T application, or SMCJ54CA-E3/57T equivalent, this device is selected for robust overvoltage protection on DC power rails, automotive sensor interfaces, and industrial I/O lines where bidirectional clamping, low leakage (<1 µA at 54 V), and AEC-Q101 qualification are required.
Technical Context
The SMCJ54CA-E3/57T implements an avalanche-based silicon junction structure optimized for fast response (<1 ns) to ESD and lightning-induced surges. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity sensitivity in AC-coupled or floating signal paths.
Thermally, it features RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation under repetitive surge conditions when mounted on 8.0 mm × 8.0 mm copper pads. The glass-passivated chip junction and matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC RMS working limit. |
| VBR min/max | 60.0 V / 66.3 V at 1 mA - Verified breakdown threshold range; ensures consistent turn-on across production lots. |
| VC @ IPPM | ≤87.1 V at 17.2 A - Clamped voltage during 1500 W surge; determines maximum stress imposed on protected ICs. |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage at rated standoff; critical for battery-powered or high-impedance sensor circuits. |
| PPPM | 1500 W (10/1000 µs) - Peak surge energy handling capacity; supports IEC 61000-4-5 Level 4 compliance with proper PCB layout. |
| TJ range | –55 °C to +150 °C - Extended thermal envelope enables use in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
SMCJ54CA-E3/57T uses the SMC (DO-214AB) package: a molded, RoHS-compliant, halogen-free surface-mount case with matte tin-plated leads. No polarity marking is present on bidirectional variants; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Accepts reverse surge current during negative polarity transients; electrically identical to Cathode in bidirectional operation. |
| Cathode | Transient current entry (positive half-cycle) | Accepts reverse surge current during positive polarity transients; functionally mirrored to Anode for full bidirectional clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions-enables single-device protection of AC signals or floating buses without polarity concerns. |
| 1500 W surge rating | Withstands 10/1000 µs surges up to 17.2 A-meets IEC 61000-4-5 Ed. 3 requirements for industrial and automotive port protection. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces-supports PPAP and long-term reliability in harsh environments. |
| Low leakage & tight VBR | ≤1.0 µA at 54 V and ±5.5% VBR tolerance-minimizes standby power loss and ensures predictable turn-on timing in precision analog 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 ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt surge energy before reaching signal conditioning circuitry. Use Value: Limits transient voltage to ≤87.1 V while maintaining <1 µA leakage-preserves signal integrity and avoids false triggering in 12 V/24 V automotive systems. | Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on field-side terminals, coordinated with series impedance and filtering. Use Value: Absorbs 1500 W surges without degradation-extends system uptime by preventing latch-up or gate oxide damage in microcontroller GPIOs. |
| Telecom Power Rail Protection | Consumer USB Port ESD Suppression |
Use Scenario: Guarding 48 V DC power feeds in PoE-powered network switches and base station RF modules against lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS deployed downstream of primary MOVs to handle fast-rising residual transients. Use Value: Clamps within <1 ns to ≤87.1 V-prevents cumulative stress on DC-DC converters and Ethernet PHYs during repeated surge events. | Use Scenario: Protecting USB 2.0 data lines and VBUS in portable docking stations against human-body-model (HBM) ESD per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to minimize signal distortion. Use Value: Delivers 1500 W surge capability with no polarity marking-simplifies layout and reduces BOM count versus dual unidirectional devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA-E3/61 | Lower PPPM (400 W), smaller SMA package, higher RθJA (110 °C/W) | Suitable only for lower-energy threats (IEC 61000-4-2); not recommended for IEC 61000-4-5 or load dump. | Select when board space is constrained and surge threat level is limited to ESD-only environments. |
| 1.5KE54CA | Through-hole DO-204AB package, same VWM/VC, but slower thermal recovery and no AEC-Q101 qualification | Used in legacy industrial power supplies; lacks automotive qualification and surface-mount compatibility. | Choose only for through-hole prototyping or repair of existing designs; not for new automotive or high-volume SMT production. |
Compared with SMAJ54CA-E3/61 and 1.5KE54CA, the SMCJ54CA-E3/57T delivers 3.75× higher surge power in an AEC-Q101-qualified SMT package-making it the preferred choice for automotive, industrial, and telecom applications demanding robust, standardized, and scalable protection.
Availability
SMCJ54CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SMCJ54CA-E3/57T 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, efficiency, and application-specific optimization.
The SMCJ series is engineered for high-power transient suppression in automotive, industrial, and communications infrastructure-delivering consistent clamping performance, AEC-Q101 validation, and ruggedized packaging for mission-critical overvoltage defense.
FAQ
What is the standoff voltage (VWM) of the SMCJ54CA-E3/57T?
The SMCJ54CA-E3/57T has a standoff voltage (VWM) of 54 V, meaning it remains non-conductive under normal operating conditions up to this DC or RMS AC voltage. This value is confirmed in the Vishay datasheet Document Number 88394, Table "ELECTRICAL CHARACTERISTICS", row for SMCJ54CA. Exceeding 54 V triggers avalanche breakdown, initiating clamping action to protect downstream circuitry.
Is the SMCJ54CA-E3/57T suitable for automotive applications?
Yes, the SMCJ54CA-E3/57T is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet revision 09-Jan-2024. Its construction-including glass-passivated junction, matte tin-plated leads, and SMC package meeting MSL Level 1-ensures reliability under automotive temperature cycling, vibration, and humidity stress. The SMCJ54CA-E3/57T is routinely deployed in engine control units, ADAS sensors, and body electronics for ISO 7637-2 and IEC 61000-4-5 compliance.
What is the maximum clamping voltage (VC) of the SMCJ54CA-E3/57T at its rated surge current?
The SMCJ54CA-E3/57T clamps to a maximum of 87.1 V at its peak pulse current (IPPM) of 17.2 A, measured under the standard 10/1000 µs waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table of the Vishay datasheet (Document Number 88394) for the SMCJ54CA variant. It defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does the SMCJ54CA-E3/57T have polarity markings on the package?
No, the SMCJ54CA-E3/57T does not feature polarity markings because it is a bidirectional TVS diode. As confirmed in the Vishay datasheet section "MECHANICAL DATA", bidirectional types like SMCJ54CA have no cathode band or other orientation indicators-the device functions identically regardless of terminal orientation. This simplifies placement in AC-coupled or floating signal paths.
What is the thermal resistance (RθJA) of the SMCJ54CA-E3/57T?
The SMCJ54CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended pad layout (0.31" × 0.31" copper pads per terminal), as specified in the "THERMAL CHARACTERISTICS" table of the Vishay datasheet (Document Number 88394). This value assumes natural convection cooling and is critical for calculating junction temperature rise under sustained power dissipation or repetitive surge conditions.
SMCJ54CA-E3/57T 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:
- -
- Bidirectional Channels:
- 1
- 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 (SMCJ)
SMCJ54CA-E3/57T FAQ
1.How can I place an order for SMCJ54CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CA-E3/57T 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 SMCJ54CA-E3/57T reliable?
The price and inventory of SMCJ54CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ54CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CA-E3/57T?
SMCJ54CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CA-E3/57T 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 SMCJ54CA-E3/57T?
For technical support, including SMCJ54CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ54CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ54CA-E3/57T 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 SMCJ54CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ54CA-E3/57T?
All SMCJ54CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CA-E3/57T, 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 SMCJ54CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ54CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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