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Vishay General Semiconductor - Diodes Division SMCJ90CA-E3/9AT
- Part No.:
- SMCJ90CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90CA-E3/9AT.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,631
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Product details
Overview
SMCJ90CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power rating, 146 V maximum clamping voltage at 10.3 A IPPM, and 90 V standoff voltage. It protects sensitive signal lines and power rails in automotive sensor interfaces, industrial I/O modules, and telecom line cards against lightning-induced transients and inductive switching spikes.
For engineers reviewing the SMCJ90CA-E3/9AT datasheet, SMCJ90CA-E3/9AT pinout, SMCJ90CA-E3/9AT application, or SMCJ90CA-E3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, 10/1000 μs waveform compliance, junction temperature derating above 25 °C, and RoHS-compliant matte tin lead finish suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device across protected lines, triggering when reverse (or forward, in bidirectional mode) voltage exceeds its 100–111 V breakdown range at 1 mA test current. Its low incremental surge resistance ensures minimal voltage overshoot during 10.3 A transient events.
Designed for surface-mount use on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 75 °C/W junction-to-ambient thermal resistance and supports operation from –55 °C to +150 °C, meeting MSL Level 1 reflow requirements up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 100 V / 111 V at 1 mA - Confirmed breakdown threshold range under standardized test conditions |
| VC @ IPPM | 146 V at 10.3 A - Clamped voltage during full-rated 10/1000 μs surge, defining worst-case overvoltage seen by downstream circuitry |
| PPPM | 1500 W - Peak pulse power handling capability, enabling robust protection against IEC 61000-4-5 Level 4 surges |
| TJ max | +150 °C - Maximum junction temperature, supporting reliable operation in under-hood automotive and industrial enclosures |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm body and 2.62 mm height |
| Leads | Matte tin plated - Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Pinout & Package
SMCJ90CA-E3/9AT uses a 2-terminal SMC (DO-214AB) package with no polarity marking for bidirectional operation. Both terminals are electrically symmetrical; neither is designated anode or cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Line-side connection | Connected to protected signal or power line; carries full surge current during clamping event |
| Terminal 2 | Return/reference connection | Connected to system ground or return path; completes clamping loop with identical electrical behavior as Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC characteristics in both directions, eliminating need for orientation-aware layout |
| Low clamping ratio | VC/VBR ≈ 1.46 enables tighter overvoltage margin than typical silicon avalanche diodes |
| MSL Level 1 rating | Supports single-reflow profile up to 260 °C peak without moisture-related damage |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive-grade reliability; this E3 variant is commercial grade |
| Glass passivated junction | Enhances long-term stability and leakage performance under thermal cycling and humidity stress |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential bus lines to limit transient excursions below IC absolute maximum ratings. Use Value: Maintains signal integrity during 100 V/10 ms load dump events while surviving >1000 surges per MIL-STD-750 Method 2070. | Use Scenario: Shielding 24 V DC digital input modules from relay coil flyback and field wiring ESD in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-mode protector tied between input terminal and chassis ground, conducting only during >90 V transients. Use Value: Prevents false triggering and latch-up in optocoupler input stages during 1 kV/500 A surge tests per IEC 61000-4-5. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Safeguarding Ethernet PHY front-end components against lightning-induced surges on PoE-powered access points. IC Role / Device Role / Timing Role: Primary-level TVS mounted at RJ45 connector, clamping common-mode transients before reaching magnetics and PHY IC. Use Value: Limits induced common-mode voltage to ≤146 V, preserving isolation barrier integrity and preventing PHY latch-up. | Use Scenario: Secondary-side overvoltage suppression on 12 V DC output rails of AC/DC adapters used in medical monitors. IC Role / Device Role / Timing Role: Fast-response shunt device across regulated output to absorb capacitor discharge energy during short-circuit recovery. Use Value: Clamps output to 146 V within <1 ns, protecting downstream DC-DC converters and microcontrollers from overvoltage damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC90CA | Same VWM (90 V) and PPPM (1500 W), but smaller SMA package (DO-214AC); lower IPPM (9.2 A) and higher VC (150 V) | Limited to lower-energy surges; unsuitable where PCB space allows SMC footprint and higher surge margin is required | Select SMCJ90CA-E3/9AT when 10.3 A IPPM and 146 V VC are mandatory for IEC 61000-4-5 compliance |
| SMCJ90A-E3/9AT | Unidirectional version with identical VWM, VBR, and PPPM; includes cathode band marking and forward conduction capability | Requires polarity-aware layout; not usable in AC-coupled or floating differential lines | Choose SMCJ90CA-E3/9AT for bidirectional signal paths such as RS-485, CAN, or Ethernet where polarity cannot be guaranteed |
Compared with SAC90CA and SMCJ90A-E3/9AT, the SMCJ90CA-E3/9AT uniquely delivers bidirectional 146 V clamping at 10.3 A in the industry-standard SMC footprint-enabling layout reuse across AC and DC protection zones without polarity constraints or derated surge capacity.
Availability
SMCJ90CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card designs requiring stable component supply and full traceability through Vishay's authorized distribution channel.
Supply support for SMCJ90CA-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 high-reliability, high-power, and automotive-qualified solutions.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where 1500 W surge immunity and AEC-Q101 qualification options are critical.
FAQ
What is the breakdown voltage range of the SMCJ90CA-E3/9AT?
The SMCJ90CA-E3/9AT has a specified breakdown voltage (VBR) range of 100 V to 111 V at 1 mA test current, measured in both directions due to its bidirectional construction. This range ensures consistent clamping behavior regardless of transient polarity and aligns with the 90 V standoff voltage (VWM) requirement for reliable operation below the trigger threshold. The SMCJ90CA-E3/9AT maintains this specification across its qualified temperature range.
Does the SMCJ90CA-E3/9AT require polarity-specific PCB layout?
No, the SMCJ90CA-E3/9AT does not require polarity-specific layout because it is a bidirectional TVS diode with symmetrical electrical characteristics in both directions. Unlike unidirectional variants such as SMCJ90A-E3/9AT, the SMCJ90CA-E3/9AT has no cathode band marking and functions identically regardless of terminal orientation. This simplifies PCB routing for AC-coupled or floating differential interfaces like CAN, RS-485, or Ethernet, where signal polarity may vary.
What is the maximum clamping voltage of the SMCJ90CA-E3/9AT under rated surge conditions?
The SMCJ90CA-E3/9AT exhibits a maximum clamping voltage (VC) of 146 V when subjected to its rated 10/1000 μs surge current of 10.3 A. This value represents the peak voltage seen across the device during full-power transient events and defines the upper voltage limit imposed on protected circuitry. The SMCJ90CA-E3/9AT achieves this clamping performance while maintaining low incremental surge resistance, minimizing energy dissipation in downstream components.
Is the SMCJ90CA-E3/9AT suitable for automotive applications?
The SMCJ90CA-E3/9AT is RoHS-compliant and manufactured to commercial-grade specifications. While it shares the same die and package as AEC-Q101-qualified variants (e.g., SMCJ90CAHE3), the E3 suffix indicates non-automotive qualification. For production automotive use, engineers must select the HE3 or HM3 suffix versions. The SMCJ90CA-E3/9AT remains suitable for automotive prototyping, bench testing, and non-safety-critical subsystems where formal qualification is not mandated.
How does the SMCJ90CA-E3/9AT compare to the unidirectional SMCJ90A-E3/9AT in terms of surge handling?
The SMCJ90CA-E3/9AT and SMCJ90A-E3/9AT share identical peak pulse power (1500 W), breakdown voltage range (100–111 V), and clamping voltage (146 V at 10.3 A) under rated 10/1000 μs waveforms. The core difference lies in conduction directionality: the SMCJ90CA-E3/9AT clamps equally in both polarities, while the SMCJ90A-E3/9AT conducts only in reverse bias and provides forward conduction capability. Therefore, surge energy handling capability is equivalent, but application context determines suitability.
SMCJ90CA-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):
- 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)
SMCJ90CA-E3/9AT FAQ
1.How can I place an order for SMCJ90CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90CA-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 SMCJ90CA-E3/9AT reliable?
The price and inventory of SMCJ90CA-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 SMCJ90CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ90CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90CA-E3/9AT?
SMCJ90CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90CA-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 SMCJ90CA-E3/9AT?
For technical support, including SMCJ90CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ90CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ90CA-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 SMCJ90CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ90CA-E3/9AT?
All SMCJ90CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90CA-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 SMCJ90CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ90CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90CA-E3/9AT Tags
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