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Vishay General Semiconductor - Diodes Division SMCJ90A-E3/57T
- Part No.:
- SMCJ90A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90A-E3/57T.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,971
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Product details
Overview
SMCJ90A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection of DC power rails and signal lines. It features a 90 V standoff voltage (VWM), 100–111 V breakdown voltage (VBR at 1 mA), 146 V maximum clamping voltage (VC) at 10.3 A peak pulse current, and 1500 W peak pulse power rating with a 10/1000 µs waveform - deployed in automotive power supply inputs, industrial sensor interfaces, and telecom line protection.
For engineers reviewing the SMCJ90A-E3/57T datasheet, SMCJ90A-E3/57T pinout, SMCJ90A-E3/57T application, or SMCJ90A-E3/57T equivalent, key selection criteria include clamping performance under 10.3 A surge, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ90A-E3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) to transient overvoltages. Its unidirectional configuration uses a cathode band for polarity identification and exhibits low incremental surge resistance, enabling precise clamping during ESD, lightning-induced surges, and inductive switching events.
Rated for -55 °C to +150 °C operating junction temperature, it meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and maintains <1.0 µA reverse leakage at 90 V standoff - validated under ANSI/IEEE C62.35 standards for surge protector classification (UL 497B, file E136766).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 90 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 100–111 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 146 V at 10.3 A (10/1000 µs) - Peak voltage seen by protected circuit during rated surge; critical for IC/MOSFET survival. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized surge waveforms; enables robust protection in harsh environments. |
| RθJA (Junction-to-Ambient) | 75 °C/W - Thermal resistance with recommended pad layout; determines derating above 25 °C ambient. |
| IFSM (Surge Current) | 200 A (8.3 ms half-sine) - Non-repetitive forward surge rating; supports inrush and fault-current immunity. |
| TJmax | +150 °C - Maximum junction temperature; sets upper limit for thermal design and reliability modeling. |
Pinout & Package
Package: SMC (DO-214AB) - Surface-mount plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, and polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return; completes clamping loop during transient events. |
| Cathode | Reverse-biased terminal / Protected line connection | Connected to line being protected (e.g., 90 V rail); avalanche conduction occurs when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment. |
| Glass-passivated junction | Ensures stable avalanche characteristics, long-term reliability, and resistance to humidity/moisture ingress. |
| 1500 W peak pulse power | Provides immunity against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without external series impedance. |
| AEC-Q101 qualification option | Available in HE3/HM3 variants for automotive applications requiring stress-tested TVS components. |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without preconditioning or dry-pack requirements. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges up to ±100 V. Use Value: Limits voltage to ≤146 V during 10.3 A transients, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Shielding 4–20 mA analog sensor outputs from ESD and field wiring surges in factory automation. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional device used across signal and return lines with common-mode suppression. Use Value: Clamps differential transients within 1 ns while maintaining <1.0 µA leakage at 90 V, preserving signal integrity. |
| Telecom DC Power Feeds | Consumer Power Adapter Outputs |
|
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream fuses. Use Value: Absorbs 1500 W pulses without degradation, meeting GR-1089-CORE lightning surge requirements. |
Use Scenario: Secondary-side surge protection in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5–12 V output rails to prevent latch-up in USB controllers and SoCs. Use Value: Delivers 146 V clamping at 10.3 A with RθJA = 75 °C/W, enabling compact thermally constrained designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A-E3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VC specs. | Reduced surge handling; suitable only for lower-energy threats (e.g., ESD-only zones). | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2. |
| SMCJ90CA-E3/57T | Bidirectional variant with identical VWM, VBR, and VC; no polarity marking; symmetric clamping. | Required for AC-coupled or floating signal lines where reverse polarity surges occur. | Choose for full-duplex data lines, transformer-isolated interfaces, or dual-rail protection without polarity dependency. |
Compared with SMCJ90A-E3/57T, SMBJ90A-E3/52T trades 60% pulse power for 30% smaller footprint, while SMCJ90CA-E3/57T retains full 1500 W capability but removes polarity constraints - making the original optimal for cost-sensitive, high-energy unidirectional DC rail protection.
Availability
SMCJ90A-E3/57T is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, telecom DC feeds, and consumer adapter outputs requiring stable component supply, RoHS compliance, and traceable sourcing.
Supply support for SMCJ90A-E3/57T 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, 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 SMCJ90A-E3/57T at its rated peak pulse current?
The SMCJ90A-E3/57T has a maximum clamping voltage (VC) of 146 V when subjected to a 10/1000 µs waveform at 10.3 A peak pulse current. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The SMCJ90A-E3/57T maintains this clamping performance consistently across its qualified operating temperature range.
Is the SMCJ90A-E3/57T RoHS-compliant and lead-free?
Yes, the SMCJ90A-E3/57T is RoHS-compliant and lead-free, as indicated by the "E3" suffix per Vishay's ordering nomenclature. It features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets JESD 201 Class 2 whisker resistance requirements. The SMCJ90A-E3/57T is not halogen-free; for that specification, the M3 variant is required.
Can the SMCJ90A-E3/57T be used in automotive applications?
The base SMCJ90A-E3/57T is commercial-grade; however, Vishay offers AEC-Q101-qualified versions under the HE3 and HM3 suffixes (e.g., SMCJ90AHE3_A). These variants undergo extended stress testing for temperature cycling, humidity, and surge endurance - making them suitable for automotive powertrain and body electronics. The SMCJ90A-E3/57T itself is not AEC-Q101 certified.
What is the thermal resistance and how does it affect PCB layout for the SMCJ90A-E3/57T?
The SMCJ90A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under sustained power dissipation, PCB layout must replicate this minimum pad area and use internal ground planes for heat spreading. Derating begins above 25 °C ambient per Figure 2 in the datasheet.
How does the SMCJ90A-E3/57T differ from the bidirectional SMCJ90CA-E3/57T?
The SMCJ90A-E3/57T is unidirectional with a cathode band marking and conducts only in reverse avalanche mode; the SMCJ90CA-E3/57T is bidirectional with no polarity marking and clamps symmetrically in both directions. Both share identical VWM (90 V), VBR (100–111 V), VC (146 V), and PPPM (1500 W), but the SMCJ90CA-E3/57T is required for AC signals or floating nodes where voltage polarity reverses.
SMCJ90A-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMCJ90A-E3/57T FAQ
1.How can I place an order for SMCJ90A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90A-E3/57T 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 SMCJ90A-E3/57T reliable?
The price and inventory of SMCJ90A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ90A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90A-E3/57T?
SMCJ90A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90A-E3/57T 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 SMCJ90A-E3/57T?
For technical support, including SMCJ90A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90A-E3/57T requirements.
6.How does Aetrix verify that SMCJ90A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ90A-E3/57T 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 SMCJ90A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ90A-E3/57T?
All SMCJ90A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90A-E3/57T, 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 SMCJ90A-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ90A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90A-E3/57T Tags
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