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Vishay General Semiconductor - Diodes Division SMCJ54A-E3/57T
- Part No.:
- SMCJ54A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54A-E3/57T.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,729
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Product details
Overview
SMCJ54A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 87.1 V maximum clamping voltage (VC) at 17.2 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the SMCJ54A-E3/57T datasheet, SMCJ54A-E3/57T pinout, SMCJ54A-E3/57T application, or SMCJ54A-E3/57T equivalent, key selection criteria include unidirectional polarity, 1500 W surge capability, RoHS-compliant matte tin-plated leads, MSL Level 1 rating, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
The SMCJ54A-E3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to suppress ESD, lightning-induced surges, and inductive switching transients. Its unidirectional configuration enables cathode-referenced clamping on positive-going overvoltage events.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from –55 °C to +150 °C junction temperature. The device meets UL 497B recognition (QVGQ2) and complies with ANSI/IEEE C62.35 surge standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above nominal 48 V DC rail. |
| VBR min/max | 60.0 V / 66.3 V at IT = 1 mA - Confirmed breakdown range ensures reliable turn-on during transient excursions without premature conduction. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamping voltage under 10/1000 µs surge defines worst-case stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 1500 W - Peak pulse power handling capacity determines survivability against IEC 61000-4-5 Level 4 (4 kV) surges on 50 Ω source impedance. |
| ID @ VWM | 1.0 µA - Reverse leakage at 54 V ensures negligible standby current drain in battery-powered systems. |
| TJ max | +150 °C - Maximum junction temperature supports under-hood automotive placement and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement per terminal. |
Pinout & Package
SMCJ54A-E3/57T uses the SMC (DO-214AB) package: a rectangular surface-mount case with coplanar matte tin-plated leads, cathode indicated by a band on the body. Thermal design requires minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms clamping path when cathode is biased above VBR. |
| Cathode | High-side transient input | Connected to protected line (e.g., 48 V supply rail); band-marked end conducts avalanche current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against severe transients per IEC 61000-4-5, eliminating need for cascaded TVS or external current limiting. |
| 87.1 V clamping voltage at 17.2 A | Limits voltage seen by downstream 60 V-rated MOSFETs or automotive-grade MCUs during 10/1000 µs surge events. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free PCB assembly without moisture sensitivity concerns or baking requirements. |
| RoHS-compliant, matte tin plating | Ensures solderability per J-STD-002 and JESD 22-B102, with whisker resistance per JESD 201 Class 2. |
| AEC-Q101 qualification path | HE3/HM3 suffix variants are qualified for automotive applications; this E3/57T variant shares identical die and construction. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 48 V boardnet power distribution in ADAS ECUs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 48 V rail and chassis ground to limit transient voltage to ≤87.1 V. Use Value: Prevents damage to 60 V-rated buck converters and CAN FD transceivers during ISO 16750-2 pulse 5a (75 V/350 ms) and pulse 5b (110 V/100 ms) events. |
Use Scenario: Analog output line (0–10 V) from pressure sensor in factory automation PLC module. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point to shunt ESD and cable discharge events. Use Value: Maintains signal integrity with <1 µA leakage at 54 V, avoiding offset errors in 16-bit ADC front-end while surviving IEC 61000-4-2 ±8 kV contact discharge. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Supply Clamp |
Use Scenario: –48 V DC input stage of optical line terminal (OLT) powered via telecom rectifier. IC Role / Device Role / Timing Role: Cathode tied to –48 V rail, anode to system ground - clamps negative-going surges during rectifier fault conditions. Use Value: Withstands 1500 W peak pulse energy from lightning-induced surges on long-line feeds without degradation, per GR-1089-CORE. |
Use Scenario: 24–48 V DC bus feeding H-bridge motor driver in smart HVAC blower unit. IC Role / Device Role / Timing Role: Mounted across bus rails to absorb inductive kickback from brushed DC motor commutation. Use Value: Fast <1 ns response captures sub-microsecond flyback spikes, preventing gate oxide rupture in 60 V logic-level MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/61 | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), same VWM/VBR/VC specs. | Suitable only for lower-energy transients (IEC 61000-4-2 ±4 kV); not rated for IEC 61000-4-5 Level 4. | Select when space-constrained PCB layout prioritizes size over surge robustness. |
| SMCJ54CA-E3/57T | Bidirectional variant; symmetric VBR (60.0–66.3 V) in both polarities; same PPPM, VC, and package. | Required for AC-coupled or floating signal lines where polarity reversal occurs (e.g., RS-485 differential pairs). | Choose only if bidirectional clamping is mandated; unidirectional SMCJ54A-E3/57T offers lower cost and simpler grounding for DC rails. |
Compared with SMAJ54A-E3/61, SMCJ54A-E3/57T delivers 3.75× higher surge power handling and superior thermal dissipation; versus SMCJ54CA-E3/57T, it provides optimized unidirectional clamping with reduced capacitance and lower system grounding complexity on DC supplies.
Availability
SMCJ54A-E3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across production lifecycles.
Supply support for SMCJ54A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of the SMCJ54A-E3/57T under standard test conditions?
The SMCJ54A-E3/57T has a maximum clamping voltage (VC) of 87.1 V when subjected to its rated peak pulse current (IPPM) of 17.2 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ54A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is the SMCJ54A-E3/57T suitable for automotive applications requiring AEC-Q101 qualification?
The SMCJ54A-E3/57T itself carries the commercial-grade E3 suffix and is not AEC-Q101 qualified; however, Vishay offers functionally identical variants with HE3 (RoHS-compliant, AEC-Q101 qualified) and HM3 (halogen-free, AEC-Q101 qualified) suffixes. The SMCJ54A-E3/57T shares the same die, package, and electrical characteristics - only the qualification and marking differ. For production automotive use, specify SMCJ54AHE3_X instead.
What is the thermal resistance from junction to ambient for the SMCJ54A-E3/57T?
The SMCJ54A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. This value assumes still air conditions and is critical for calculating maximum power dissipation at elevated ambient temperatures. Derating curves in the Vishay datasheet (Fig. 2) must be applied for operation above 25 °C ambient.
How does the SMCJ54A-E3/57T compare to bidirectional TVS diodes like SMCJ54CA-E3/57T?
The SMCJ54A-E3/57T is unidirectional and clamps only positive transients relative to ground, with cathode marked for correct orientation. In contrast, SMCJ54CA-E3/57T is bidirectional and clamps both polarities symmetrically. Both share identical VWM (54 V), VBR (60.0–66.3 V), VC (87.1 V), and PPPM (1500 W), but the unidirectional SMCJ54A-E3/57T offers lower junction capacitance and simpler grounding in DC applications. The SMCJ54A-E3/57T is not interchangeable with SMCJ54CA-E3/57T without circuit review.
What packaging format is used for the SMCJ54A-E3/57T and what is the reel quantity?
The SMCJ54A-E3/57T is supplied in 7-inch diameter plastic tape and reel packaging with a base quantity of 850 units per reel (package code 57T). The tape conforms to EIA-481 standards, and the device is positioned in pocketed carrier tape with cover tape sealing. This format supports automated SMT placement and is compatible with standard pick-and-place equipment used in high-volume manufacturing.
SMCJ54A-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:
- 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 (SMCJ)
SMCJ54A-E3/57T FAQ
1.How can I place an order for SMCJ54A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54A-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 SMCJ54A-E3/57T reliable?
The price and inventory of SMCJ54A-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 SMCJ54A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ54A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54A-E3/57T?
SMCJ54A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54A-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 SMCJ54A-E3/57T?
For technical support, including SMCJ54A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54A-E3/57T requirements.
6.How does Aetrix verify that SMCJ54A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ54A-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 SMCJ54A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ54A-E3/57T?
All SMCJ54A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54A-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 SMCJ54A-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ54A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54A-E3/57T Tags
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