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Vishay General Semiconductor - Diodes Division SMCJ54-E3/9AT
- Part No.:
- SMCJ54-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54-E3/9AT.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,753
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Product details
Overview
SMCJ54-E3/9AT 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 (10/1000 µs), 87.1 V clamping voltage at 17.2 A surge current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ54-E3/9AT datasheet, SMCJ54-E3/9AT pinout, SMCJ54-E3/9AT application, or SMCJ54-E3/9AT equivalent, this device is selected for high-energy transient suppression on DC power rails and signal lines where fast response (<1 ns), low clamping ratio, and stable performance across -55 °C to +150 °C are required.
Technical Context
The SMCJ54-E3/9AT operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at 54 V) and repeatable clamping behavior under repetitive transients.
Designed for surface-mount implementation on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), enabling effective heat dissipation without external heatsinking in most industrial and automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (Breakdown Voltage) | 60.0–66.3 V at 1.0 mA - Confirmed avalanche onset range defining turn-on threshold |
| VC (Clamping Voltage) | 87.1 V at 17.2 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capability against standardized lightning/surge waveforms |
| IPPM (Peak Pulse Current) | 17.2 A - Maximum transient current the device safely shunts without degradation |
| TJ Range | -55 °C to +150 °C - Full operational junction temperature range supporting under-hood automotive use |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked with cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Reverse-biased protection terminal | Connected to protected line (e.g., 54 V rail); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a) |
| MSL Level 1 (JEDEC J-STD-020) | Unlimited floor life at ≤30 °C/60% RH; compatible with standard reflow profiles up to 260 °C peak |
| RoHS-compliant, lead-free | E3 suffix confirms compliance with Directive 2011/65/EU; no exemptions required |
| UL 497B Recognized (QVGQ2) | Validated for use in telecom and industrial surge protection circuits per safety standard |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V/54 V battery-supplied ECUs against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 60 V. Use Value: Limits voltage to ≤87.1 V during 17.2 A transients, preventing damage to downstream PMICs and microcontrollers rated for 65 V max. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt ESD (IEC 61000-4-2) and inductive switching spikes. Use Value: Sub-1 ns response and <1.0 µA leakage at 54 V preserve signal integrity while meeting IEC 61000-4-5 Level 3 (1 kV/2 Ω) immunity. |
| Telecom DC Feeder Protection | Computer Peripheral Port Protection |
Use Scenario: Securing -48 V DC power feeds in telecom base station cabinets against lightning-induced surges on outdoor cable runs. IC Role / Device Role / Timing Role: Reverse-connected unidirectional TVS referenced to negative rail to clamp positive-going transients. Use Value: 1500 W rating handles multi-kA induced surges; AEC-Q101 qualification supports extended field life in harsh environments. | Use Scenario: Hardening USB or RS-485 ports on industrial PCs against accidental hot-plug transients and nearby relay switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed inline with data lines to avoid signal distortion. Use Value: Clamps to 87.1 V without affecting 5–12 V logic levels; DO-214AB footprint enables compact layout near connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC54 | Lower PPPM (600 W), higher VC (100 V), same VWM/VBR range | Not suitable for high-energy load dump; limited to ESD and low-energy spikes | Select SMCJ54-E3/9AT when 1500 W surge handling is required; SAC54 fits space-constrained designs with lower energy threats. |
| 1.5KE56A | Through-hole TO-218 package, identical electrical specs but larger footprint and manual assembly requirement | Not viable for fully automated SMT production; incompatible with high-density PCBs | Choose SMCJ54-E3/9AT for surface-mount scalability and AEC-Q101 validation; 1.5KE56A only where legacy through-hole is mandated. |
Compared with SAC54 and 1.5KE56A, the SMCJ54-E3/9AT uniquely combines automotive-grade qualification, 1500 W surge capacity, and DO-214AB SMT compatibility-enabling reliable, high-volume protection for 54 V systems without layout or process compromise.
Availability
SMCJ54-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder safeguarding requiring stable component supply and full traceability.
Supply support for SMCJ54-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, efficiency, and application-specific validation.
The SMCJ series was engineered for high-energy transient suppression in demanding environments-targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the SMCJ54-E3/9AT under a 10/1000 µs surge?
The SMCJ54-E3/9AT clamps to a maximum of 87.1 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 17.2 A. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet Document Number 88394, ensuring predictable overvoltage limiting for protected ICs and power stages.
Is the SMCJ54-E3/9AT suitable for automotive applications?
Yes, the SMCJ54-E3/9AT carries AEC-Q101 qualification (noted in the datasheet's Mechanical Data section), confirming its suitability for automotive electronics including engine control units, body controllers, and ADAS sensors. Its -55 °C to +150 °C operating range and robust surge handling align with ISO 16750-2 requirements.
Does the SMCJ54-E3/9AT have polarity marking, and how is it oriented in circuit?
Yes-the SMCJ54-E3/9AT features a visible cathode band on one end. As a unidirectional TVS, it must be installed with the banded (cathode) terminal connected to the line being protected (e.g., 54 V rail) and the anode tied to ground or lower potential, enabling conduction only during overvoltage events.
What is the maximum leakage current of the SMCJ54-E3/9AT at its standoff voltage?
At its 54 V standoff voltage (VWM), the SMCJ54-E3/9AT exhibits a maximum reverse leakage current of 1.0 µA at 25 °C, as specified in the Electrical Characteristics table. This ultra-low leakage preserves system efficiency and avoids false triggering in high-impedance sensing circuits.
Can the SMCJ54-E3/9AT be used in bi-directional configurations?
No-the SMCJ54-E3/9AT is explicitly a unidirectional device (denoted by "A" suffix, not "CA"). For bi-directional operation, Vishay specifies parts like SMCJ54CA. Using SMCJ54-E3/9AT in reverse-biased mode beyond its forward voltage rating risks permanent damage due to lack of symmetrical avalanche structure.
SMCJ54-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ54-E3/9AT FAQ
1.How can I place an order for SMCJ54-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54-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 SMCJ54-E3/9AT reliable?
The price and inventory of SMCJ54-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 SMCJ54-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ54-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54-E3/9AT?
SMCJ54-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54-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 SMCJ54-E3/9AT?
For technical support, including SMCJ54-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54-E3/9AT requirements.
6.How does Aetrix verify that SMCJ54-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ54-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 SMCJ54-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ54-E3/9AT?
All SMCJ54-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54-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 SMCJ54-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ54-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54-E3/9AT Tags
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