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Vishay General Semiconductor - Diodes Division SMCJ36CA-E3/9AT
- Part No.:
- SMCJ36CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36CA-E3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,470
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Product details
Overview
SMCJ36CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 36 V standoff voltage, 58.1 V clamping voltage at 25.8 A peak pulse current, and 1500 W peak pulse power rating. It protects sensitive ICs, MOSFETs, and sensor signal lines against inductive switching transients and lightning-induced surges in automotive and industrial power electronics.
For engineers reviewing the SMCJ36CA-E3/9AT datasheet, SMCJ36CA-E3/9AT pinout, SMCJ36CA-E3/9AT application, or SMCJ36CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge handling under 10/1000 µs waveform, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages exceeding its 36 V reverse standoff level. Its bidirectional architecture ensures symmetrical clamping in both polarities, eliminating need for polarity-aware layout. The glass-passivated junction delivers stable breakdown behavior across -55 °C to +150 °C operating range.
Clamping performance is characterized by 58.1 V maximum VC at 25.8 A IPPM under 10/1000 µs waveform, with low incremental surge resistance enabling effective energy diversion. Thermal design relies on RθJA = 75 °C/W and RθJL = 15 °C/W, requiring minimum 8.0 mm × 8.0 mm copper pads per terminal for rated power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 36 V - Maximum continuous reverse operating voltage before clamping initiates |
| Clamping Voltage (VC) | 58.1 V at 25.8 A - Peak voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power (PPPM) | 1500 W - Energy-handling capacity under standardized 10/1000 µs transient waveform |
| Breakdown Voltage (VBR) | 40.0–44.2 V at 1 mA - Confirmed voltage range where device transitions into avalanche conduction |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm body, optimized for automated placement |
| Operating Temperature | -55 °C to +150 °C - Full-rated junction temperature range for automotive and industrial environments |
| RoHS Compliance | E3 suffix - Lead-free, halogen-free, compliant with JEDEC JESD201 Class 2 whisker resistance |
Pinout & Package
SMCJ36CA-E3/9AT uses a 2-terminal SMC (DO-214AB) package with no polarity marking for bidirectional operation. Terminals are matte tin-plated leads solderable per J-STD-002 and JESD22-B102 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path (bidirectional) | One of two symmetrical terminals; conducts during positive or negative overvoltage events |
| Cathode | Transient current return path (bidirectional) | Second symmetrical terminal; identical function to Anode; no band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes stress on downstream components during transient events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow without baking prior to assembly |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive-grade reliability validation |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at power input stage before DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤58.1 V during 1500 W surges, preventing latch-up or gate oxide damage in downstream silicon. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional clamp on differential or single-ended sensor output traces exposed to EMI and cable discharge. Use Value: Maintains signal integrity by clamping ±36 V transients without polarity-dependent routing or additional components. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Inputs |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS on data line pairs, coordinated with secondary GDT or polymer PTC devices. Use Value: Responds in <1 ps to limit surge energy before it reaches the transceiver's internal ESD structures. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Across-motor terminals or between motor driver H-bridge outputs and ground. Use Value: Absorbs repetitive 1500 W inductive kickback pulses without degradation, extending MOSFET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-E3/52T | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA) | Reduced surge margin; suitable only for lower-energy transients or space-constrained designs | Select when board area is critical and worst-case surge energy is ≤600 W |
| SMCJ36A-E3/9AT | Unidirectional version; cathode band marking; same VWM/VC/PPPM specs | Requires polarity-aware layout; not suitable for AC or floating signals | Choose only for DC-biased rails where polarity is fixed and known |
Compared with SMCJ36CA-E3/9AT, SMBJ36CA-E3/52T trades surge robustness for compactness, while SMCJ36A-E3/9AT sacrifices bidirectionality for identical clamping performance in unidirectional systems-neither is pin-compatible, but both share the same SMC footprint and thermal pad requirements.
Availability
SMCJ36CA-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, telecom line protection, and consumer appliance motor drive applications requiring stable component supply and full AEC-Q101 traceability via HE3 variants.
Supply support for SMCJ36CA-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 optimization.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered for automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term stability are mandatory.
FAQ
What does the "CA" suffix indicate in SMCJ36CA-E3/9AT?
The "CA" suffix denotes a bidirectional configuration, meaning SMCJ36CA-E3/9AT provides symmetrical transient voltage suppression for both positive and negative polarity surges. Unlike unidirectional variants (e.g., SMCJ36A), it has no cathode band marking and is used where signal lines lack defined DC bias or operate in AC-coupled configurations. This makes SMCJ36CA-E3/9AT ideal for protecting differential interfaces or floating sensor outputs without polarity constraints.
What is the maximum clamping voltage of SMCJ36CA-E3/9AT under surge conditions?
The maximum clamping voltage (VC) of SMCJ36CA-E3/9AT is 58.1 V when subjected to a 10/1000 µs waveform at 25.8 A peak pulse current. This value is measured per ANSI/IEEE C62.35 standards and represents the highest voltage imposed on the protected circuit during a standardized surge event. Engineers must ensure downstream components tolerate this clamping level, especially when designing for IEC 61000-4-5 compliance.
Is SMCJ36CA-E3/9AT suitable for automotive applications?
Yes, SMCJ36CA-E3/9AT is qualified for automotive use when ordered with the HE3 or HM3 suffix (e.g., SMCJ36CAHE3_A/I). The base SMCJ36CA-E3/9AT is commercial-grade RoHS-compliant, but AEC-Q101-qualified versions meet stringent automotive reliability requirements including temperature cycling, humidity testing, and mechanical shock. For automotive power distribution or ADAS sensor protection, specify the HE3 variant to ensure full qualification.
How does the SMC (DO-214AB) package of SMCJ36CA-E3/9AT affect thermal performance?
The SMC (DO-214AB) package of SMCJ36CA-E3/9AT delivers RθJL = 15 °C/W to the PCB leads and RθJA = 75 °C/W to ambient air when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This thermal profile enables full 1500 W surge handling only with adequate copper area; reducing pad size de-rates power capability per Figure 2 in the Vishay datasheet. Layout must avoid thermal isolation to prevent junction overheating during repetitive surges.
Can SMCJ36CA-E3/9AT replace SMCJ36A-E3/9AT in an existing design?
No, SMCJ36CA-E3/9AT cannot directly replace SMCJ36A-E3/9AT without layout review: the former is bidirectional with no polarity marking, while the latter is unidirectional with a cathode band. Swapping them risks incorrect orientation and failure to clamp negative transients. If bidirectional protection is needed, verify that all connected circuits tolerate symmetrical clamping and confirm no DC bias conflicts exist-otherwise, retain SMCJ36A-E3/9AT and add external polarity control.
SMCJ36CA-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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 25.8A
- 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)
SMCJ36CA-E3/9AT FAQ
1.How can I place an order for SMCJ36CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36CA-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 SMCJ36CA-E3/9AT reliable?
The price and inventory of SMCJ36CA-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 SMCJ36CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ36CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36CA-E3/9AT?
SMCJ36CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36CA-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 SMCJ36CA-E3/9AT?
For technical support, including SMCJ36CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ36CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ36CA-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 SMCJ36CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ36CA-E3/9AT?
All SMCJ36CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36CA-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 SMCJ36CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ36CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36CA-E3/9AT Tags
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