SMDA15-6/TR7 Equivalent & Substitute Parts

Part Overview

The SMDA15-6/TR7 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 15V reverse standoff voltage, 30V maximum clamping voltage, and 5A peak pulse current capability in an 8-SOIC package. The part is currently active in production with 965 units in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative compliance certifications are required.

Substiute Parts

SMDA15-6/TR7

Microchip TechnologyIn Stock: 1074SMDA15-6/TR7 Datasheet

Current PartRFQ

SMDA15-6

SMC Diode SolutionsIn Stock: 1171SMDA15-6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMDA15-6/TR7 is determined by the following critical parameters:

Package Compatibility: The substitute part must use the 8-SOIC (0.154", 3.90mm Width) surface-mount package to ensure mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Voltage Specifications: The reverse standoff voltage must be 15V (typical), with a minimum breakdown voltage of 16.7V. The clamping voltage and peak pulse current define the protection characteristics and must be evaluated against application requirements.

Channel Configuration: The part must provide 6 unidirectional channels to match the original device's protection architecture.

Electrical Characteristics: Operating temperature range, capacitance at 1MHz, and power dissipation ratings must be compatible with the application environment and circuit design constraints.

Compliance and Certification: RoHS status, REACH compliance, and moisture sensitivity level (MSL) are secondary selection criteria based on regulatory and supply chain requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (SMDA15-6/TR7 - Microchip Technology): This device is the specified component with active production status. It provides 5A peak pulse current capability and operates across an extended temperature range of -55°C to 150°C. The part is RoHS non-compliant, which may be acceptable for applications without regulatory RoHS requirements. Use this part when maximum current handling and temperature range are required.

Substitute Part (SMDA15-6 - SMC Diode Solutions): This alternative offers ROHS3 compliance, making it suitable for applications subject to RoHS regulations. However, it exhibits reduced peak pulse current (1A versus 5A) and a narrower operating temperature range (-55°C to 125°C). The clamping voltage is also lower at 24V compared to 30V. This substitute is appropriate only for applications where the lower current and voltage ratings are acceptable and RoHS compliance is mandatory.

Selection Criteria: Choose the Microchip SMDA15-6/TR7 for applications requiring full current and temperature specifications. Select the SMC Diode Solutions SMDA15-6 only when RoHS3 compliance is a regulatory requirement and the application can tolerate reduced current handling and clamping voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can the SMDA15-6 (SMC Diode Solutions) directly replace the SMDA15-6/TR7 (Microchip) in all applications?

A: No. While both parts share the same package, voltage standoff, and channel configuration, the SMC part has reduced peak pulse current (1A versus 5A) and lower clamping voltage (24V versus 30V). Substitution is only valid for applications where these reduced ratings are acceptable.

Q: What is the primary difference between these two TVS diodes?

A: The main differences are peak pulse current capability (5A for Microchip versus 1A for SMC), maximum clamping voltage (30V versus 24V), operating temperature range (150°C versus 125°C maximum), and RoHS compliance status (non-compliant versus ROHS3 compliant).

Q: Are the package dimensions identical between the two parts?

A: Yes. Both parts use the 8-SOIC package with 0.154" width and 3.90mm width specification, ensuring identical PCB footprint and assembly compatibility.

Q: Which part should be used for high-current transient protection applications?

A: The SMDA15-6/TR7 (Microchip) is the appropriate choice, as it provides 5A peak pulse current capability compared to the SMC part's 1A rating.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance is a regulatory and material composition requirement, not an electrical performance specification. Both parts meet the same electrical standards for their respective ratings.

Q: Can I use the SMC part in a design originally specified for the Microchip part?

A: Only if the application requirements can be met with 1A peak pulse current, 24V clamping voltage, and -55°C to 125°C operating range. A full circuit analysis is necessary to confirm compatibility.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning the component can be stored indefinitely without special moisture control measures prior to assembly.