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Vishay General Semiconductor - Diodes Division 1.5SMC36CA-M3/9AT
- Part No.:
- 1.5SMC36CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CA-M3/9AT.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
1.5SMC36CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC36CA-M3/9AT datasheet, 1.5SMC36CA-M3/9AT pinout, 1.5SMC36CA-M3/9AT application, or 1.5SMC36CA-M3/9AT equivalent, this device delivers verified bidirectional clamping performance, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness - critical for high-reliability ESD and surge immunity design in harsh environments.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 34.2–37.8 V (min/max) under 1 mA test current. Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while fast response time (<1 ns) enables effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The device uses a glass-passivated silicon junction housed in an SMC (DO-214AB) package rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity. Thermal resistance junction-to-ambient (RθJA) is 75 °C/W on standard 8.0 mm × 8.0 mm copper pads, supporting stable operation under repetitive 0.01% duty-cycle transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - Confirmed bidirectional avalanche onset range; ensures symmetrical protection behavior. |
| VC (Clamping Voltage) | 49.9 V at 30.1 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 1500 W - Sustained energy absorption capability per transient; validates suitability for IEC 61000-4-5 Level 4 (4 kV) testing. |
| ID (Leakage Current) | 1.0 μA max at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max | 150 °C - Enables reliable operation in under-hood automotive or industrial ambient conditions up to +125 °C board temperature. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Common terminal pair | Identical electrical behavior in either direction; no cathode band marking required - simplifies PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 1500 W peak pulse power | Supports high-energy surge events including lightning-induced transients on 24 V industrial buses and automotive CAN/LIN lines. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for global electronics manufacturing and end-of-life recycling. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking - reduces production handling overhead and moisture-related defects. |
| AEC-Q101 qualification path | Base P/NHM3_X variant available for automotive applications; confirms reliability under temperature cycling, HTRB, and mechanical shock. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting 5 V or 12 V supply rails and signal lines of wheel speed, pressure, and temperature sensors exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at connector entry point to shunt transients before reaching ASIC or microcontroller input pins. Use Value: Limits induced voltage to ≤49.9 V during 30.1 A surges, preventing latch-up or permanent damage to sensitive analog front-end circuitry. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring faults and EFT bursts. IC Role / Device Role / Timing Role: Primary overvoltage clamp on differential input stage, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Maintains signal fidelity with only 1.0 μA leakage at 30.8 V, while surviving repeated 1500 W surges without parameter drift. |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485/RS-422 transceivers and Ethernet PHYs from induced surges on long cable runs in building automation networks. IC Role / Device Role / Timing Role: Secondary-level surge suppressor mounted adjacent to connector, downstream of gas discharge tube (GDT) primary protection. Use Value: Clamps residual transients to <50 V within nanoseconds, ensuring transceiver ICs remain within absolute maximum ratings during 10/1000 μs events. |
Use Scenario: Hardening USB 2.0 data lines (D+/D−) and VBUS against human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at port connector to minimize trace inductance and maximize response speed. Use Value: Delivers sub-1 ns response with symmetrical clamping, preserving signal integrity while meeting IEC 61000-4-2 ±15 kV contact discharge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), same VWM/VC specs, SMB (DO-214AA) package - 30% smaller footprint but higher thermal resistance (RθJA = 110 °C/W). | Suitable for space-constrained consumer ports where surge energy is limited to IEC 61000-4-2 only; not recommended for IEC 61000-4-5 Level 4. | Select when board area is critical and peak surge energy does not exceed 600 W; verify thermal derating at elevated ambient temperatures. |
| 1.5KE36CA | Through-hole TO-204AE (DO-15) package, identical electrical specs, higher RθJA (100 °C/W), requires wave soldering or hand assembly. | Used in legacy industrial power supplies and retrofit designs where SMT is not feasible; lacks MSL Level 1 and automated placement compatibility. | Choose only for through-hole prototyping or repair scenarios; avoid for new SMT production due to placement and reflow limitations. |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CA-M3/9AT provides optimal balance of high-power surge handling (1500 W), SMT manufacturability, and halogen-free compliance - making it the preferred choice for volume automotive and industrial designs requiring AEC-Q101 alignment and robust 10/1000 μs immunity.
Availability
1.5SMC36CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line interface circuits requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC36CA-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 1.5SMC Series was engineered for high-power, surface-mount transient suppression in demanding environments - targeting automotive, industrial, and telecom systems where compact size, repeatable clamping, and AEC-Q101 readiness are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC36CA-M3/9AT under maximum rated surge current?
The 1.5SMC36CA-M3/9AT has a maximum clamping voltage (VC) of 49.9 V at 30.1 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 1.5SMC36CA-M3/9AT maintains this clamping performance bidirectionally.
Is the 1.5SMC36CA-M3/9AT suitable for automotive applications?
Yes - the 1.5SMC36CA-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and belongs to the AEC-Q101-qualified 1.5SMC family. While the base part number itself is commercial-grade, the HM3_X variant (e.g., 1.5SMC36CAHM3_A/I) is fully AEC-Q101 qualified. The 1.5SMC36CA-M3/9AT shares identical electrical and thermal characteristics, making it suitable for automotive pre-qualification and production ramp where qualification documentation is pending.
How does the bidirectional configuration of the 1.5SMC36CA-M3/9AT affect PCB layout?
The 1.5SMC36CA-M3/9AT has no polarity marking and exhibits identical electrical behavior in both directions, eliminating orientation constraints during placement. This allows unrestricted rotation on the PCB and simplifies layout for AC-coupled or floating nodes - such as RS-485 differential pairs or transformer-isolated power rails. The 1.5SMC36CA-M3/9AT's symmetrical terminals reduce routing complexity and eliminate risk of reverse installation.
What is the maximum operating temperature for the 1.5SMC36CA-M3/9AT?
The 1.5SMC36CA-M3/9AT has a maximum junction temperature (TJ max) of 150 °C and an operating junction/storage temperature range of –65 °C to +150 °C. Its thermal resistance junction-to-ambient (RθJA) is 75 °C/W when mounted on standard 8.0 mm × 8.0 mm copper pads. Derating curves in the datasheet confirm usable power dissipation down to –65 °C, enabling deployment in under-hood automotive or outdoor industrial enclosures.
Does the 1.5SMC36CA-M3/9AT meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes - the 1.5SMC36CA-M3/9AT meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This means it can be stored indefinitely at room temperature without baking and processed using standard lead-free reflow profiles. The 1.5SMC36CA-M3/9AT's glass-passivated chip junction and matte tin-plated leads further ensure solderability and intermetallic reliability per J-STD-002 and JESD 22-B102.
1.5SMC36CA-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC36CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC36CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CA-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 1.5SMC36CA-M3/9AT reliable?
The price and inventory of 1.5SMC36CA-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 1.5SMC36CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CA-M3/9AT?
1.5SMC36CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CA-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 1.5SMC36CA-M3/9AT?
For technical support, including 1.5SMC36CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC36CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CA-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 1.5SMC36CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CA-M3/9AT?
All 1.5SMC36CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CA-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 1.5SMC36CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC36CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CA-M3/9AT Tags
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