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Vishay General Semiconductor - Diodes Division SMCJ150CA-M3/9AT
- Part No.:
- SMCJ150CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CA-M3/9AT.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,791
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Product details
Overview
SMCJ150CA-M3/9AT 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 1500 W peak pulse power rating, 150 V standoff voltage (VWM), and clamping voltage of 243 V at 6.2 A peak pulse current. It protects sensitive ICs, MOSFETs, and sensor signal lines in automotive and industrial power systems.
For engineers reviewing the SMCJ150CA-M3/9AT datasheet, SMCJ150CA-M3/9AT pinout, SMCJ150CA-M3/9AT application, or SMCJ150CA-M3/9AT equivalent, this device is selected for robust ESD and lightning-induced transient suppression in DC power rails and bidirectional data/signal interfaces where low clamping ratio and halogen-free RoHS compliance are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 167–185 V (min/max) at 1 mA test current, enabling reliable triggering during overvoltage events regardless of polarity. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns) to transients.
Thermal design is supported by RθJA = 75 °C/W and RθJL = 15 °C/W, allowing effective heat dissipation when mounted on 8.0 mm × 8.0 mm copper pads per terminal. The device meets MSL Level 1 and is halogen-free (M3 suffix), compliant with JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail protection threshold. |
| VBR min/max | 167 V / 185 V at 1 mA - Confirmed breakdown range ensuring consistent turn-on behavior under bidirectional surges. |
| VC @ IPPM | 243 V at 6.2 A - Clamping voltage under 10/1000 µs surge; determines maximum stress imposed on protected circuitry. |
| PPPM | 1500 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity designs. |
| ID @ VWM | 1.0 µA - Reverse leakage at rated standoff voltage; ensures minimal standby power loss and signal integrity. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated placement. |
Pinout & Package
SMCJ150CA-M3/9AT uses a 2-terminal SMC (DO-214AB) package with no polarity marking-consistent with bidirectional functionality. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | Either terminal serves as anode or cathode depending on transient polarity; no band marking required. |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; copper pad layout (8.0 mm × 8.0 mm per terminal) required for rated PPPM. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Supports high-energy transients per IEC 61000-4-5, reducing need for cascaded protection stages. |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for automotive and industrial OEM programs without sacrificing surge rating. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive switching), improving system-level immunity. |
| MSL Level 1, 260 °C reflow compatible | Allows standard SMT assembly without moisture sensitivity handling or baking steps. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Bidirectional TVS placed at power entry point to clamp surges before they reach LDOs, microcontrollers, and CAN transceivers. Use Value: Withstands 1500 W pulses and clamps to 243 V, limiting downstream voltage stress below 250 V while maintaining compatibility with 36 V-rated components. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors from field wiring-induced surges. IC Role / Device Role / Timing Role: Placed differential across signal pair to suppress common-mode transients without affecting DC bias or bandwidth. Use Value: Symmetrical VBR (167–185 V) ensures identical clamping in either direction, preserving signal fidelity during bidirectional fault conditions. |
| Telecom DC Power Input Protection | Consumer Device USB/Type-C Port Protection |
|
Use Scenario: Safeguarding PoE-powered equipment inputs against lightning-induced surges on Ethernet cabling. IC Role / Device Role / Timing Role: Primary TVS on DC input rail upstream of DC-DC converters, coordinated with secondary GDT or MOV stages. Use Value: 1500 W rating allows absorption of multi-kV transients per IEC 61000-4-5, reducing reliance on external spark gaps. |
Use Scenario: Adding robust overvoltage protection to USB Type-C CC and VBUS lines in portable docking stations. IC Role / Device Role / Timing Role: Bidirectional clamping element on VBUS to handle reverse polarity insertion and hot-swap surges. Use Value: Halogen-free M3 construction meets consumer safety standards; low leakage (1.0 µA) avoids battery drain in always-on devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA-M3 | Lower PPPM (600 W), same VWM (150 V), SMB package (smaller footprint, lower thermal mass). | Suitable for space-constrained PCBs with lower surge threat levels (e.g., IEC 61000-4-2 ESD only). | Select when board area is critical and full 1500 W IEC 61000-4-5 immunity is not required. |
| SMCJ150A-M3/9AT | Unidirectional version; same VWM (150 V), PPPM (1500 W), but requires correct polarity orientation. | Applicable only where circuit polarity is fixed and reverse-voltage faults are not expected. | Choose only if system architecture guarantees unidirectional surge exposure and polarity alignment can be assured. |
Compared with SMCJ150CA-M3/9AT, SMBJ150CA-M3 trades surge capacity for compactness, while SMCJ150A-M3/9AT sacrifices bidirectional flexibility for marginally lower cost-neither offers pin-compatible replacement without layout or schematic review.
Availability
SMCJ150CA-M3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supply designs requiring stable component supply, halogen-free compliance, and repeatable 1500 W surge protection performance.
Supply support for SMCJ150CA-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, power efficiency, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom-where consistent clamping, low leakage, and robust thermal performance are mandatory.
FAQ
What is the clamping voltage of SMCJ150CA-M3/9AT under a 10/1000 µs surge?
The SMCJ150CA-M3/9AT clamps to a maximum of 243 V at its rated peak pulse current of 6.2 A using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The clamping performance remains consistent across both polarities due to its bidirectional design, and the 243 V VC directly informs downstream component voltage ratings in the protected system.
Is SMCJ150CA-M3/9AT suitable for automotive applications?
Yes, SMCJ150CA-M3/9AT is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes; however, the M3/9AT variant is commercial-grade and not AEC-Q101 certified. For non-automotive-qualified use, it still meets key automotive-relevant requirements including TJ max = +150 °C, MSL Level 1, and halogen-free construction. Engineers deploying SMCJ150CA-M3/9AT in automotive contexts must validate its suitability per their specific qualification program and consult Vishay's AEC-Q101 documentation for HM3-part variants.
How does the bidirectional nature of SMCJ150CA-M3/9AT affect PCB layout?
The bidirectional nature of SMCJ150CA-M3/9AT eliminates polarity constraints during placement-no cathode band or orientation marking is present, simplifying layout and reducing assembly errors. Unlike unidirectional TVS diodes, SMCJ150CA-M3/9AT can be placed across any two nodes subject to symmetrical overvoltage risk (e.g., differential signal pairs or floating DC rails) without concern for forward/reverse bias. This also removes the need for duplicate devices in AC-coupled paths, cutting BOM count and board area.
What is the thermal resistance of SMCJ150CA-M3/9AT, and how does it impact derating?
SMCJ150CA-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W, measured on the recommended 8.0 mm × 8.0 mm copper pad layout per terminal. At ambient temperatures above 25 °C, peak pulse power must be derated per Figure 2 in the datasheet-e.g., at TA = 85 °C, PPPM drops to ~70 % of 1500 W. Proper copper pour and thermal vias are essential to maintain rated performance in sustained surge scenarios.
Does SMCJ150CA-M3/9AT meet RoHS and halogen-free requirements?
Yes, the "M3" suffix in SMCJ150CA-M3/9AT explicitly denotes halogen-free, RoHS-compliant construction per Vishay's material categorization standards. This includes lead-free matte tin plating and UL 94 V-0 molding compound. The device satisfies EU RoHS Directive 2011/65/EU and JEDEC JS709B halogen-free criteria, making it suitable for export-controlled and environmentally regulated industrial and consumer programs without additional compliance validation.
SMCJ150CA-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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
SMCJ150CA-M3/9AT FAQ
1.How can I place an order for SMCJ150CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CA-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 SMCJ150CA-M3/9AT reliable?
The price and inventory of SMCJ150CA-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 SMCJ150CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ150CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CA-M3/9AT?
SMCJ150CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CA-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 SMCJ150CA-M3/9AT?
For technical support, including SMCJ150CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ150CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ150CA-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 SMCJ150CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ150CA-M3/9AT?
All SMCJ150CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CA-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 SMCJ150CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ150CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CA-M3/9AT Tags
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