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Vishay General Semiconductor - Diodes Division SMCJ54CHE3/9AT
- Part No.:
- SMCJ54CHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CHE3/9AT.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,079
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Product details
Overview
SMCJ54CHE3/9AT from Vishay is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) 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 range (VBR at 1 mA), 87.1 V clamping voltage at 17.2 A peak pulse current (IPPM), 1500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ54CHE3/9AT datasheet, SMCJ54CHE3/9AT pinout, SMCJ54CHE3/9AT application, or SMCJ54CHE3/9AT equivalent, this device is selected for high-energy surge suppression in automotive ECUs, industrial power supplies, and telecom interface circuits where stable clamping performance and RoHS-compliant, whisker-tested leads are required.
Technical Context
The SMCJ54CHE3/9AT operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to transients. Its unidirectional polarity enables integration into DC-biased lines without reverse conduction concerns, and its low incremental surge resistance ensures minimal voltage overshoot during 1500 W surges.
Thermal design is supported by RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and TJmax = 150 °C, enabling sustained operation in under-hood automotive environments. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 60.0–66.3 V at 1 mA - Tight tolerance ensures predictable turn-on across production lots. |
| VC (Clamping Voltage) | 87.1 V at IPPM = 17.2 A - Limits downstream voltage stress during 10/1000 µs transients. |
| PPPM (Peak Pulse Power) | 1500 W - Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without failure. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Negligible power loss and signal integrity impact in standby. |
| TJ max | 150 °C - Enables deployment in engine control modules and power converters with elevated ambient temperatures. |
| Package | DO-214AB (SMCJ) - Industry-standard surface-mount outline with 8.0 mm × 8.0 mm thermal pad footprint. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic body with J-bend leads; cathode indicated by band on one end; matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential node; completes clamping path during positive transients. |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., 54 V rail); avalanche conduction initiates when line exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C / 60% RH; supports standard SMT reflow without baking. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, critical for high-reliability automotive harnesses. |
| UL 94 V-0 molding compound | Self-extinguishing housing meets fire-safety requirements for enclosed automotive and industrial enclosures. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial 48 V DC Power Rail |
|---|---|
Use Scenario: Protection of microcontroller I/O and sensor supply lines against load-dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive surges on 54 V battery-derived rails while blocking reverse conduction. Use Value: Maintains 87.1 V clamping limit below IC absolute maximum ratings, preventing latch-up or gate oxide damage in 1500 W events. |
Use Scenario: Surge suppression on programmable logic controller (PLC) backplane power distribution. IC Role / Device Role / Timing Role: Standoff at 54 V allows compatibility with nominal 48 V systems while tolerating ±10 % regulation drift. Use Value: 1.0 µA leakage at VWM minimizes standby current draw across hundreds of nodes in distributed control systems. |
| Telecom Base Station DC Feeds | Automotive ADAS Camera Module |
Use Scenario: Input protection for remote radio head (RRH) power inputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Avalanche diode shunts energy within <1 ns to protect upstream DC-DC converters and PMICs. Use Value: 1500 W PPPM rating meets Telcordia GR-1089-CORE Level 3 surge immunity requirements. |
Use Scenario: ESD and surge protection on FPD-Link III serial video interface lines between camera and ECU. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to minimize inductance and preserve clamping efficacy. Use Value: DO-214AB package enables automated placement adjacent to high-speed connectors without compromising layout density. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54AHE3/A | Lower PPPM (400 W), smaller DO-214AC (SMA) package, same VWM/VBR/VC specs. | Suitable for space-constrained consumer or non-automotive industrial designs with lower surge exposure. | Select when board area is limited and IEC 61000-4-5 Level 2 (1 kV) suffices. |
| 1.5KE54A | Through-hole DO-201 package, higher RθJA, no AEC-Q101 or MSL Level 1 rating. | Legacy industrial equipment upgrades where rework to SMT is not feasible. | Choose only for prototyping or low-volume repairs where leaded assembly remains in use. |
Compared with SMAJ54AHE3/A and 1.5KE54A, the SMCJ54CHE3/9AT delivers 3.75× higher surge power handling in an automotive-qualified, surface-mount package-enabling single-device compliance with ISO 16750-2 and IEC 61000-4-5 in compact ECU layouts.
Availability
SMCJ54CHE3/9AT is available at Aetrix Electronics and suitable for automotive engine control units, industrial 48 V power systems, and telecom base station DC feeds requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMCJ54CHE3/9AT 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 and automotive qualification.
The SMCJ series targets high-energy transient suppression in harsh-environment applications, with design focus on AEC-Q101 compliance, low clamping ratio, and robust thermal performance in surface-mount form factors.
FAQ
What is the clamping voltage of the SMCJ54CHE3/9AT at its rated peak pulse current?
The SMCJ54CHE3/9AT has a maximum clamping voltage (VC) of 87.1 V at its specified peak pulse current (IPPM) of 17.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 87.1 V during standardized surge events, making it suitable for protecting 54 V-rated components in automotive and industrial systems.
Is the SMCJ54CHE3/9AT qualified for automotive applications?
Yes, the SMCJ54CHE3/9AT carries the HE3 suffix, confirming full AEC-Q101 qualification per Vishay's documentation (Document Number 88394). It has passed stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock-making it approved for use in engine control modules, ADAS systems, and other automotive subsystems requiring validated reliability.
What does the "9AT" in SMCJ54CHE3/9AT indicate?
The "9AT" denotes the preferred package code for 13-inch diameter plastic tape-and-reel delivery, containing 3500 units per reel. This packaging format is optimized for high-volume SMT assembly lines and complies with EIA-481 standards. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, while "E3" alone would indicate commercial-grade RoHS compliance only.
How does the SMCJ54CHE3/9AT differ from the bi-directional SMCJ54CA variant?
The SMCJ54CHE3/9AT is unidirectional, with a cathode band marking and forward conduction capability, whereas SMCJ54CA is bi-directional and unmarked. The unidirectional version offers lower leakage (1.0 µA vs. up to 2.0 µA for CA types at VWM) and is preferred for DC-biased lines like automotive battery feeds, while the CA variant suits AC-coupled or floating signal paths.
What thermal pad layout is recommended for optimal power dissipation of the SMCJ54CHE3/9AT?
Vishay specifies mounting the SMCJ54CHE3/9AT on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve the published RθJA of 75 °C/W. Using smaller pads increases thermal resistance, reducing safe surge repetition rate and risking junction overheating during consecutive transients-especially critical in automotive under-hood applications.
SMCJ54CHE3/9AT 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ54CHE3/9AT FAQ
1.How can I place an order for SMCJ54CHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CHE3/9AT 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 SMCJ54CHE3/9AT reliable?
The price and inventory of SMCJ54CHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54CHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ54CHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CHE3/9AT?
SMCJ54CHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CHE3/9AT 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 SMCJ54CHE3/9AT?
For technical support, including SMCJ54CHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CHE3/9AT requirements.
6.How does Aetrix verify that SMCJ54CHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ54CHE3/9AT 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 SMCJ54CHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ54CHE3/9AT?
All SMCJ54CHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CHE3/9AT, 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 SMCJ54CHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ54CHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54CHE3/9AT Tags
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