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Vishay General Semiconductor - Diodes Division SMCJ36CA-M3/9AT
- Part No.:
- SMCJ36CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ36CA-M3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,718
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Product details
Overview
SMCJ36CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 µs waveform. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, and clamps to ≤58.1 V at 25.8 A peak pulse current - deployed for protecting automotive sensor signal lines, industrial I/O interfaces, and DC power rails against ESD and inductive switching surges.
For engineers reviewing the SMCJ36CA-M3/9AT datasheet, SMCJ36CA-M3/9AT pinout, SMCJ36CA-M3/9AT application, or SMCJ36CA-M3/9AT equivalent, this part delivers verified bidirectional surge suppression with halogen-free RoHS compliance, MSL Level 1 rating, and AEC-Q101 qualification readiness - critical for automotive-grade board-level ESD protection, DC-DC converter input filtering, and CAN/LIN bus line safeguarding.
Technical Context
The SMCJ36CA-M3/9AT operates as a symmetrical avalanche diode, conducting in both directions when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping under repetitive transient events.
Designed for surface-mount automation, it uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - supporting reliable operation up to TJ = +150 °C in compact PCB layouts with minimal copper pad area (8.0 mm × 8.0 mm per terminal).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for 48 V nominal systems. |
| VBR min/max | 40.0 V / 44.2 V at IT = 1 mA - tight breakdown window ensures predictable turn-on across temperature and unit variance. |
| VC @ IPPM | ≤58.1 V at 25.8 A - clamping voltage limits stress on downstream ICs during 10/1000 µs transients (e.g., ISO 7637-2 Pulse 1/2a). |
| PPPM | 1500 W - peak pulse power handling capability enables robust protection against high-energy surges without degradation. |
| IPPM | 25.8 A - maximum non-repetitive surge current supported with standard 8.0 mm × 8.0 mm copper pads. |
| TJ range | −55 °C to +150 °C - wide junction temperature range supports under-hood automotive and industrial ambient conditions. |
| Package | SMC (DO-214AB) - standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height. |
Pinout & Package
SMCJ36CA-M3/9AT is housed in an SMC (DO-214AB) package - a 2-terminal, bidirectional surface-mount device with no polarity marking; both terminals are electrically symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous polarity of transient; no fixed polarity. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical construction enables placement without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., RS-485, CAN) without polarity concerns. |
| 1500 W peak pulse power | Withstands high-energy transients such as load dump (ISO 16750-2) and inductive kickback in 12 V/24 V automotive systems. |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising surge performance. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free reflow processes without preconditioning or special handling. |
| AEC-Q101 qualification path | Base P/NHM3_X variant available for automotive applications; SMCJ36CA-M3/9AT shares same die and process flow. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp ± transients before reaching ADC input or op-amp buffer. Use Value: Limits voltage excursion to ≤58.1 V during 25.8 A surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensing circuitry. |
Use Scenario: Safeguarding programmable logic controller (PLC) digital input channels exposed to field wiring in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to absorb induced lightning surges and relay contact bounce energy. Use Value: Clamps transients within nanoseconds while maintaining <1 µA leakage at 36 V, ensuring stable logic-level recognition under normal operation. |
| DC-DC Converter Input | CAN Bus Line Protection |
|
Use Scenario: Input-side surge suppression for buck converters powering infotainment systems in vehicles. IC Role / Device Role / Timing Role: TVS placed across VIN and GND to shunt high-voltage spikes before they reach the converter's MOSFET gate driver and controller. Use Value: Withstands 1500 W pulses without degradation, enabling compliance with ISO 7637-2 Pulse 1 (−150 V/50 Ω) and Pulse 3b (±50 V). |
Use Scenario: Secondary protection on CAN_H and CAN_L lines downstream of common-mode chokes in automotive body control modules. IC Role / Device Role / Timing Role: Symmetrical bidirectional clamping element limiting differential and common-mode overvoltage on twisted-pair bus. Use Value: Matches CAN physical layer impedance profile while clamping fast ESD events (IEC 61000-4-2 ±25 kV air) to safe levels for transceiver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC36CA-13-F | Same VWM (36 V), lower PPPM (600 W), smaller SMA package (DO-214AC), higher VC (64.5 V @ 9.3 A) | Lower surge capacity suits consumer electronics or low-energy signal lines; not recommended for automotive load dump. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 (0.5 kV). |
| 1.5KE36CA | Through-hole TO-218 package, same VWM/VBR, PPPM = 1500 W, but larger footprint and manual assembly required | Used where legacy through-hole design or higher thermal mass is preferred; incompatible with automated SMT lines. | Choose only for repair, retrofit, or prototyping where SMC footprint cannot be accommodated. |
Compared with SAC36CA-13-F and 1.5KE36CA, the SMCJ36CA-M3/9AT uniquely balances 1500 W surge capability, SMC surface-mount compatibility, halogen-free compliance, and AEC-Q101 qualification pathway - making it optimal for new automotive and industrial designs requiring automated production and high-reliability transient immunity.
Availability
SMCJ36CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and DC-DC converter input surge suppression requiring stable component supply across high-volume production cycles.
Supply support for SMCJ36CA-M3/9AT 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 is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering precise clamping, low leakage, and robust surge endurance in standardized surface-mount packages.
FAQ
What is the standoff voltage rating of the SMCJ36CA-M3/9AT?
The SMCJ36CA-M3/9AT has a maximum reverse standoff voltage (VWM) of 36 V, meaning it remains non-conductive under continuous DC or AC reverse bias up to this level. This rating ensures compatibility with 24 V nominal automotive and industrial power rails while providing sufficient margin before breakdown at 40.0–44.2 V. The SMCJ36CA-M3/9AT maintains <1.0 µA leakage current at VWM, preserving system efficiency in always-on circuits.
Is the SMCJ36CA-M3/9AT suitable for automotive applications?
Yes - the SMCJ36CA-M3/9AT is built on the same die and process as AEC-Q101 qualified variants (e.g., SMCJ36CAHM3_A/I), features halogen-free RoHS compliance (M3 suffix), MSL Level 1 reflow rating, and operates from −55 °C to +150 °C. While the exact SMCJ36CA-M3/9AT part number is commercial-grade, its construction and test data align with automotive surge immunity standards including ISO 7637-2 and ISO 16750-2. For certified deployment, specify HM3-suffixed versions.
How does the bidirectional nature of the SMCJ36CA-M3/9AT affect circuit placement?
The SMCJ36CA-M3/9AT has no polarity marking and functions identically in either direction, allowing placement between any two nodes requiring symmetrical overvoltage protection - such as across differential pairs (CAN_H/CAN_L), AC signal paths, or ungrounded power rails. Unlike unidirectional TVS diodes, it eliminates orientation errors during automated placement and avoids the need for dual-device solutions. The SMCJ36CA-M3/9AT achieves this via symmetrical avalanche structure, not internal series diodes.
What is the clamping voltage of the SMCJ36CA-M3/9AT at its rated surge current?
At its peak pulse current (IPPM) of 25.8 A - defined by a 10/1000 µs waveform - the SMCJ36CA-M3/9AT clamps to a maximum voltage (VC) of 58.1 V. This value is guaranteed across temperature and unit variation per Vishay's datasheet (Document Number 88394). The SMCJ36CA-M3/9AT's low incremental surge resistance ensures minimal voltage overshoot during fast-rising transients, directly protecting downstream 3.3 V, 5 V, or 12 V ICs.
Does the SMCJ36CA-M3/9AT require heatsinking for standard operation?
No external heatsink is required for typical transient suppression use, as the SMCJ36CA-M3/9AT is rated for 6.5 W steady-state power dissipation at TA = 50 °C with standard PCB copper pads (8.0 mm × 8.0 mm per terminal). Its RθJA of 75 °C/W and RθJL of 15 °C/W enable adequate thermal transfer in most SMT layouts. The SMCJ36CA-M3/9AT is intended for short-duration surge events, not continuous power dissipation - sustained DC overvoltage will exceed its ratings and cause failure.
SMCJ36CA-M3/9AT 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 (SMC)
SMCJ36CA-M3/9AT FAQ
1.How can I place an order for SMCJ36CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ36CA-M3/9AT 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-M3/9AT reliable?
The price and inventory of SMCJ36CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ36CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ36CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ36CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ36CA-M3/9AT?
SMCJ36CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ36CA-M3/9AT 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-M3/9AT?
For technical support, including SMCJ36CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ36CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ36CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ36CA-M3/9AT 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-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ36CA-M3/9AT?
All SMCJ36CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ36CA-M3/9AT, 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-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ36CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ36CA-M3/9AT Tags
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