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Vishay General Semiconductor - Diodes Division SMCJ54CA-E3/9AT
- Part No.:
- SMCJ54CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CA-E3/9AT.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,758
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Product details
Overview
SMCJ54CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 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 on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ54CA-E3/9AT datasheet, SMCJ54CA-E3/9AT pinout, SMCJ54CA-E3/9AT application, or SMCJ54CA-E3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, AEC-Q101 qualification eligibility, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads per terminal.
Technical Context
The SMCJ54CA-E3/9AT operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical clamping in both polarities due to its bidirectional construction. Its breakdown voltage (VBR) is specified at 60.0–66.3 V (min/max) with 1 mA test current, and it exhibits a temperature coefficient of VBR at +0.104 %/°C - enabling predictable voltage derating across -55 °C to +150 °C operating range.
It meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and supports high-energy transients induced by inductive switching or ESD events without polarity marking - distinguishing it from unidirectional variants that feature cathode band identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - ensures reliable avalanche conduction onset within defined tolerance |
| VC @ IPPM | 87.1 V at 17.2 A - limits voltage seen by protected ICs during 10/1000 µs surge |
| PPPM | 1500 W - handles high-energy transients common in automotive load-dump or industrial switching |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +150 °C - supports under-hood automotive and high-temperature industrial environments |
| RθJA | 75 °C/W - thermal performance validated on standard 8.0 mm × 8.0 mm copper pads |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads; no polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; symmetric with cathode in bidirectional mode | Enables clamping during positive or negative voltage excursions - no fixed anode/cathode designation |
| Cathode | Current exit point in forward bias; functionally identical to anode in bidirectional configuration | Both terminals behave identically under reverse or forward surge - eliminates orientation constraints during PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Equal VBR and VC in both directions - protects AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Sustains high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream MOSFETs or CAN transceivers during surge events |
| MSL Level 1 rating | Compatible with standard lead-free reflow profiles up to 260 °C peak - no moisture sensitivity handling required |
| AEC-Q101 qualification path | Base P/NHE3 suffix available - enables use in automotive powertrain and body electronics |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protection of 12 V battery-fed microcontroller inputs against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and ground to clamp ±100 V transients. Use Value: Prevents latch-up or gate oxide damage in MCUs using 54 V VWM alignment with system nominal voltage. | Use Scenario: Shielding IGBT gate drivers from Miller-induced spikes during high dv/dt switching. IC Role / Device Role / Timing Role: Fast-response clamping device across driver output and reference ground. Use Value: Limits gate-source voltage excursion to ≤87.1 V, preserving IGBT safe operating area. |
| Telecom Line Interface | Consumer Appliance Sensor Bus |
Use Scenario: Surge suppression on RS-485 data lines exposed to lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential pair, referenced to local ground. Use Value: Maintains signal integrity with <1.0 µA leakage at 54 V while clamping 10/1000 µs transients to <87.1 V. | Use Scenario: Overvoltage hardening of I²C bus lines connecting MCU to temperature/humidity sensors in washing machines. IC Role / Device Role / Timing Role: Low-capacitance TVS across SDA/SCL and ground to absorb ESD and relay bounce noise. Use Value: Enables robust operation in humid, vibration-prone environments without signal distortion or false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC54CA | Lower PPPM (600 W), same VWM (54 V), DO-214AA (SMA) package | Reduced surge handling; suitable only for lower-energy I/O protection | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 contact discharge |
| SMCJ54CA-M3/9AT | Identical electrical specs; halogen-free, RoHS-compliant variant with same SMC package | No functional difference; required where halogen-free compliance is mandated | Choose for green manufacturing programs without compromising protection performance |
Compared with SAC54CA and SMCJ54CA-M3/9AT, the SMCJ54CA-E3/9AT delivers full 1500 W surge capability in commercial-grade RoHS-compliant form, making it optimal for automotive and industrial applications demanding highest energy absorption without halogen restrictions.
Availability
SMCJ54CA-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, telecom line interface, and consumer appliance sensor bus applications requiring stable component supply and traceable sourcing.
Supply support for SMCJ54CA-E3/9AT 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-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered specifically for AEC-Q101 readiness, industrial surge immunity, and compatibility with automated SMT assembly processes.
FAQ
What is the clamping voltage of SMCJ54CA-E3/9AT at its rated peak pulse current?
The SMCJ54CA-E3/9AT has a maximum clamping voltage (VC) of 87.1 V at 17.2 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like microcontrollers or transceivers remain within absolute maximum ratings. The SMCJ54CA-E3/9AT achieves this with low incremental surge resistance inherent to its glass-passivated junction design.
Is SMCJ54CA-E3/9AT suitable for automotive applications?
Yes, the SMCJ54CA-E3/9AT is qualified for automotive use via its AEC-Q101-compatible base family; the HE3 suffix variant (e.g., SMCJ54CAHE3_A/I) is explicitly rated for automotive applications. While the SMCJ54CA-E3/9AT itself is commercial-grade, its electrical characteristics - including 1500 W PPPM, -55 °C to +150 °C operating range, and MSL Level 1 reflow compatibility - align with automotive subsystem requirements such as body control modules and infotainment power supplies. The SMCJ54CA-E3/9AT serves as a drop-in candidate for prototyping before transitioning to AEC-Q101-certified versions.
How does the bidirectional nature of SMCJ54CA-E3/9AT affect PCB layout?
The SMCJ54CA-E3/9AT has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. Unlike unidirectional TVS diodes that require cathode band alignment, the SMCJ54CA-E3/9AT can be mounted in either direction across a differential line or between rail and ground without affecting clamping behavior. This simplifies automated optical inspection (AOI) and reduces assembly errors - especially valuable in high-density layouts for RS-485 or CAN FD interfaces where signal symmetry matters. The SMCJ54CA-E3/9AT's DO-214AB footprint remains unchanged regardless of orientation.
What is the thermal resistance of SMCJ54CA-E3/9AT, and how is it measured?
The SMCJ54CA-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, measured with the device mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal - per JEDEC standards. This value assumes no additional heatsinking and reflects worst-case natural convection cooling. For higher-power surge duty cycles, thermal performance improves significantly with larger copper areas or internal layer planes. The SMCJ54CA-E3/9AT's RθJL (junction-to-lead) is 15 °C/W, supporting short-duration pulse dissipation through solder joints into PCB copper. Derating curves in the datasheet guide safe operation above 25 °C ambient.
Does SMCJ54CA-E3/9AT meet RoHS and lead-free assembly requirements?
Yes, the SMCJ54CA-E3/9AT is RoHS-compliant and rated for lead-free reflow soldering with a maximum peak temperature of 260 °C (MSL Level 1 per J-STD-020). Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and whisker resistance is certified to JESD 201 Class 2. The "E3" suffix explicitly denotes RoHS-compliant commercial grade, distinguishing it from halogen-free "M3" or automotive "HE3" variants. No special pre-bake or handling is required prior to assembly - the SMCJ54CA-E3/9AT is ready for standard SMT lines.
SMCJ54CA-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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-E3/9AT FAQ
1.How can I place an order for SMCJ54CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CA-E3/9AT 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 SMCJ54CA-E3/9AT reliable?
The price and inventory of SMCJ54CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ54CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CA-E3/9AT?
SMCJ54CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CA-E3/9AT 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 SMCJ54CA-E3/9AT?
For technical support, including SMCJ54CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ54CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ54CA-E3/9AT 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 SMCJ54CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ54CA-E3/9AT?
All SMCJ54CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CA-E3/9AT, 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 SMCJ54CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ54CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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