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Vishay General Semiconductor - Diodes Division SMCJ54AHE3_A/I
- Part No.:
- SMCJ54AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54AHE3_A/I.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,975
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Product details
Overview
SMCJ54AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) 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 maximum clamping voltage (VC) at 17.2 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), commonly deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ54AHE3_A/I datasheet, SMCJ54AHE3_A/I pinout, SMCJ54AHE3_A/I application, or SMCJ54AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, low incremental surge resistance, 150 °C max junction temperature, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads per terminal.
Technical Context
The SMCJ54AHE3_A/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and stable clamping under repetitive transients. Its thermal resistance (RθJA = 75 °C/W) and RθJL = 15 °C/W support reliable operation up to 150 °C junction temperature when mounted per recommended pad layout.
It complies with ANSI/IEEE C62.35 surge standards and meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 (260 °C peak reflow). The cathode band marking identifies polarity, and matte tin-plated leads ensure solderability per J-STD-002 and JESD22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 48 V systems. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown threshold range ensures predictable turn-on during fast transients. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamped voltage limits downstream IC stress during 1500 W surge events. |
| PPPM | 1500 W (10/1000 µs) - Peak surge power handling capability validated per industry-standard waveform. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height for compact PCB integration. |
| AEC-Q101 | Qualified - Meets automotive-grade reliability requirements for vibration, temperature cycling, and humidity testing. |
Pinout & Package
SMCJ54AHE3_A/I uses the standard SMC (DO-214AB) package: two-terminal surface-mount device with cathode identified by a visible band. Leads are matte tin-plated and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; forms current path during reverse-biased clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., 48 V rail); marked with band; conducts avalanche current to ground during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive MOSFETs and controllers. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking, simplifying manufacturing logistics. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS subsystems requiring zero-defect reliability. |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events common in 12/24/48 V vehicle networks. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump and alternator ripple in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp surges above 54 V. Use Value: Limits clamped voltage to 87.1 V, preventing damage to downstream DC-DC converters rated for ≤100 V input. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb ESD and inductive switching noise. Use Value: Sub-ns response and 17.2 A IPPM capability suppress 8 kV contact ESD per IEC 61000-4-2 without signal distortion. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: Shielding PoE+ (IEEE 802.3at) midspan injectors from lightning-induced surges on 57 V DC distribution lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input side, coordinated with upstream GDT and series impedance. Use Value: 1500 W PPPM handles multi-kA induced surges while maintaining <100 V clamping to preserve PoE controller IC integrity. | Use Scenario: Preventing gate oxide failure in 650 V SiC MOSFET drivers exposed to Miller-induced voltage spikes. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp dv/dt-induced overshoot during high-speed switching. Use Value: 87.1 V clamping voltage ensures gate-source voltage stays within ±20 V absolute maximum rating of most SiC drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/57T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not suitable for automotive load dump; limited to low-energy ESD/signal-line use. | Select only for space-constrained non-automotive designs where surge energy ≤400 W. |
| 1.5KE54A | Through-hole DO-201 package, same VWM/VC, but slower response and no AEC-Q101 qualification | Requires manual assembly; unsuitable for high-reliability automotive or automated production. | Consider only for legacy through-hole designs or cost-sensitive non-automotive prototypes. |
Compared with SMAJ54A-E3/57T and 1.5KE54A, the SMCJ54AHE3_A/I delivers 3.75× higher surge power, AEC-Q101 validation, and SMT compatibility-making it the preferred choice for production-grade 48 V automotive and industrial power systems requiring robust, automated, and qualified protection.
Availability
SMCJ54AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interfaces, telecom DC feeds, and motor drive gate protection requiring stable component supply across high-volume production cycles.
Supply support for SMCJ54AHE3_A/I 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 performance.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom-where consistent clamping, thermal stability, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SMCJ54AHE3_A/I at its rated peak pulse current?
The SMCJ54AHE3_A/I has a maximum clamping voltage (VC) of 87.1 V at 17.2 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and verified in Vishay's characterization lab using calibrated surge generators. The clamping performance remains stable across its full operating temperature range (−55 °C to +150 °C), making SMCJ54AHE3_A/I suitable for under-hood automotive deployments where thermal derating must be minimized.
Is the SMCJ54AHE3_A/I RoHS-compliant and halogen-free?
Yes, the SMCJ54AHE3_A/I is RoHS-compliant and carries the HE3 suffix, indicating both RoHS compliance and AEC-Q101 qualification. However, it is not halogen-free-the halogen-free variant uses the HM3 suffix (e.g., SMCJ54AHM3_A/I). The molding compound meets UL 94 V-0 flammability rating, and the matte tin-plated leads satisfy JESD201 Class 2 whisker resistance requirements. These material attributes are confirmed in Vishay document 88394, revision 09-Jan-2024.
Can the SMCJ54AHE3_A/I be used in bidirectional protection circuits?
No, the SMCJ54AHE3_A/I is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA"). It conducts only in reverse bias and requires correct polarity orientation-cathode toward the protected line. For bidirectional operation, the SMCJ54CAHE3_A/I variant must be selected. Using SMCJ54AHE3_A/I in a bidirectional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to protect downstream circuitry.
What is the thermal resistance from junction to ambient for the SMCJ54AHE3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for the SMCJ54AHE3_A/I is 75 °C/W, measured on the standard 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pad layout per terminal. This value assumes still air conditions and is critical for calculating steady-state power dissipation limits. When operated at 6.5 W (PD), this yields a ~488 °C junction-to-ambient delta-hence derating above 25 °C ambient is required per Figure 2 in the datasheet. RθJL is 15 °C/W, supporting efficient heat transfer to PCB copper.
Does the SMCJ54AHE3_A/I meet automotive qualification standards?
Yes, the SMCJ54AHE3_A/I is explicitly AEC-Q101 qualified, as stated in the ordering information table (page 3) and footnote (1) of the Vishay document 88394. This qualification covers stress tests including HTGB, HTRB, TCT, UHAST, and mechanical shock-validating its use in automotive powertrain, body control, and ADAS modules. The HE3 suffix denotes AEC-Q101 compliance, distinguishing it from commercial-grade E3/M3 variants. No additional qualification testing is needed for automotive deployment when using SMCJ54AHE3_A/I.
SMCJ54AHE3_A/I 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ54AHE3_A/I FAQ
1.How can I place an order for SMCJ54AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54AHE3_A/I 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 SMCJ54AHE3_A/I reliable?
The price and inventory of SMCJ54AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ54AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54AHE3_A/I?
SMCJ54AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54AHE3_A/I 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 SMCJ54AHE3_A/I?
For technical support, including SMCJ54AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ54AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ54AHE3_A/I 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 SMCJ54AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ54AHE3_A/I?
All SMCJ54AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54AHE3_A/I, 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 SMCJ54AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ54AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54AHE3_A/I Tags
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