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Vishay General Semiconductor - Diodes Division SMCJ54HE3/57T
- Part No.:
- SMCJ54HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54HE3/57T.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,762
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Product details
Overview
SMCJ54HE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown range (VBR), 1500 W peak pulse power (PPPM), and clamps transients to ≤87.1 V at 17.2 A, commonly used in automotive power line and industrial sensor interface protection.
For engineers reviewing the SMCJ54HE3/57T datasheet, SMCJ54HE3/57T pinout, SMCJ54HE3/57T application, or SMCJ54HE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ54HE3/57T operates as a silicon avalanche diode that enters breakdown when reverse voltage exceeds its VBR threshold, diverting surge current away from protected circuitry. Its unidirectional polarity enables integration into DC-biased lines where forward conduction must be blocked until clamping occurs.
It delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), supporting reliable operation up to 150 °C junction temperature in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 60.0 V / 66.3 V - Breakdown voltage range at 1 mA test current; defines clamping onset precision |
| VC @ IPPM | ≤87.1 V - Clamped voltage at 17.2 A peak pulse current; determines maximum stress on downstream ICs |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; sets surge immunity level |
| ID @ VWM | 1.0 μA - Reverse leakage at 54 V; ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-temperature industrial enclosures |
| MSL Level | Level 1 (260 °C peak reflow) - Supports standard lead-free SMT reflow without moisture sensitivity concerns |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 54 V supply rail); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal stress and humidity exposure |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping accuracy and system robustness |
| MSL Level 1 compliance | Enables direct placement onto PCBs without baking, reducing manufacturing complexity and cost |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance, ensuring solder joint integrity in high-reliability applications |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V/24 V/48 V battery-fed ECUs and ADAS modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach PMICs or microcontrollers. Use Value: Withstands 1500 W surges and clamps to ≤87.1 V, preventing latch-up or permanent damage to downstream 5V/3.3V logic. | Use Scenario: Safeguarding analog front-ends of pressure, temperature, or current sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used here; SMCJ54HE3/57T serves as unidirectional rail clamp on sensor supply lines. Use Value: 1.0 μA leakage at 54 V preserves signal accuracy in high-impedance sensor circuits while enabling fast response to ESD or switching noise. |
| Telecom DC Power Feeds | Motor Drive Control Logic |
Use Scenario: Securing -48 V telecom rectifier outputs and distribution boards against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Mounted directly at power entry point to absorb energy before it propagates to DC/DC converters and FPGA power domains. Use Value: 75 °C/W junction-to-ambient thermal resistance allows stable operation without heatsinking in compact telecom chassis. | Use Scenario: Shielding gate drivers and isolated feedback circuits in BLDC inverters from MOSFET switching noise and inductive kickback. IC Role / Device Role / Timing Role: Placed across isolated 15 V or 24 V auxiliary rails powering optocouplers and bootstrap circuits. Use Value: Fast response time and low clamping voltage prevent false triggering or timing skew in high-frequency PWM control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/52T | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VBR range | Suitable for space-constrained consumer or low-energy industrial designs, not automotive-grade | Select when board area is critical and surge threat level is below 1 kV/40 Ω ISO 16750-2 |
| 1.5KE54A | Through-hole TO-218 package, 1500 W rating, same VWM/VBR but higher RθJA (~100 °C/W) | Used in legacy industrial power supplies where manual assembly or retrofitting is required | Choose only if SMT is unavailable or thermal management via heatsink is feasible |
Compared with SMAJ54A-E3/52T and 1.5KE54A, the SMCJ54HE3/57T offers superior automotive qualification, lower thermal resistance, and optimized SMT manufacturability-making it the preferred choice for new AEC-Q101-compliant designs requiring high surge immunity in minimal footprint.
Availability
SMCJ54HE3/57T is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC feed safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMCJ54HE3/57T 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, TVS devices, and power MOSFETs with emphasis on reliability and ruggedness.
The SMCJ series belongs to Vishay's TRANSZORB® family of transient voltage suppressors, engineered specifically for high-energy surge protection in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ54HE3/57T at its rated peak pulse current?
The SMCJ54HE3/57T has a maximum clamping voltage (VC) of 87.1 V at its peak pulse current (IPPM) of 17.2 A under 10/1000 μs waveform conditions. This value is measured across the cathode-anode terminals during transient suppression and defines the upper voltage limit imposed on protected circuitry. The SMCJ54HE3/57T maintains this clamping performance consistently due to its glass-passivated silicon junction and low incremental surge resistance.
Is the SMCJ54HE3/57T suitable for automotive applications?
Yes, the SMCJ54HE3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and JESD 201 Class 2 whisker resistance (HE3 suffix) meet stringent automotive reliability requirements. The SMCJ54HE3/57T is commonly deployed in engine control units, ADAS camera modules, and body control modules for ISO 7637-2 and ISO 16750-2 transient protection.
What does the "HE3" suffix indicate in SMCJ54HE3/57T?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike the base "E3" suffix (commercial grade), "HE3" confirms automotive-grade reliability testing, including temperature cycling, humidity bias, and mechanical shock validation. The SMCJ54HE3/57T thus carries full automotive process and qualification traceability-not just material compliance.
How does the SMCJ54HE3/57T differ from bi-directional variants like SMCJ54CA?
The SMCJ54HE3/57T is unidirectional, meaning it blocks forward current and clamps only in reverse bias-ideal for DC power rails with defined polarity. In contrast, SMCJ54CA is bi-directional and symmetrically clamps both polarities, suited for AC lines or data signals. The SMCJ54HE3/57T exhibits 1.0 μA leakage at 54 V, whereas SMCJ54CA would show similar leakage in both directions but lacks a cathode band marking.
What PCB pad layout is recommended for optimal thermal performance of the SMCJ54HE3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad for each terminal to achieve rated 1500 W pulse power and 75 °C/W thermal resistance. These pads must be connected to internal ground/power planes via multiple thermal vias to dissipate heat effectively. Deviating from this layout-such as using smaller pads or insufficient copper-reduces surge capability and risks thermal runaway during repeated transients. The SMCJ54HE3/57T relies on this defined copper mass for both electrical and thermal performance.
SMCJ54HE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ54HE3/57T FAQ
1.How can I place an order for SMCJ54HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54HE3/57T 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 SMCJ54HE3/57T reliable?
The price and inventory of SMCJ54HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ54HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54HE3/57T?
SMCJ54HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54HE3/57T 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 SMCJ54HE3/57T?
For technical support, including SMCJ54HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54HE3/57T requirements.
6.How does Aetrix verify that SMCJ54HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ54HE3/57T 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 SMCJ54HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ54HE3/57T?
All SMCJ54HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54HE3/57T, 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 SMCJ54HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ54HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54HE3/57T Tags
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