150CMQ040

Overview

The SMCJ150CA is a bidirectional transient voltage suppressor diode from the SMCJ series, manufactured by SMC Diode Solutions. It utilizes a DO-214AB (SMC) surface-mount package and offers a peak pulse power dissipation of 1500W. The device features a standoff voltage range starting at 5.0V up to 440V with a tolerance of ±5%. It provides picosecond-level response speeds and low leakage current characteristics. The component employs a glass-passivated junction for high reliability and is available in both unidirectional and bidirectional configurations.

Feature Summary

• Bidirectional configuration for AC or bipolar DC line protection
• Glass-passivated junction structure ensuring high reliability
• Picosecond response speed for fast transient suppression
• Low leakage current capability

Applications

• Protection of sensitive electronic circuits against ESD and lightning-induced surges
• Guarding data lines and communication interfaces from transient overvoltages
• General-purpose transient voltage suppression in industrial equipment

Procurement Notes

Verify the specific part number suffix to confirm bidirectional functionality, as the 'CA' designation indicates this configuration. Ensure the required standoff voltage aligns with the system's operating parameters within the 5.0V to 440V range. Confirm compliance with RoHS standards and halogen-free requirements if mandated by your assembly specifications. Cross-reference the DO-214AB footprint dimensions with your PCB layout guidelines.

Selection Notes

Select this component when circuit protection requires a 1500W peak pulse power rating in a compact surface-mount form factor. The bidirectional nature makes it suitable for protecting lines where voltage polarity may reverse or for AC applications. Ensure the working reverse standoff voltage of the selected variant matches the maximum continuous operating voltage of the protected circuit to prevent unnecessary conduction during normal operation.

Part Context

The SMCJ series represents a family of transient voltage suppressors designed for surface-mount applications. These devices are characterized by their robust DO-214AB packaging, which facilitates automated assembly while providing effective thermal dissipation. The series covers a wide voltage range, allowing engineers to find precise clamping solutions for various digital and analog signal lines without resorting to larger through-hole components.

Replacement Considerations

Compatible substitutes include other 1500W TVS diodes in the DO-214AB package with matching bidirectional characteristics and equivalent standoff voltages. Verify that alternative parts maintain similar peak pulse power ratings and clamping voltage limits to ensure identical protection levels. Check for pinout compatibility and thermal performance similarities before finalizing any cross-replacement.