SS19L MQG Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS19L MQG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the Sub SMA package format. This component operates at 90 V DC reverse voltage with 1 A average rectified current capacity and features fast recovery characteristics suitable for high-frequency switching applications.

The SS19L MQG is classified as Active product status and is fully compliant with RoHS3 and REACH regulations. Alternative equivalent parts become necessary when the primary part number experiences supply constraints, inventory limitations, or when design requirements permit substitution within the defined electrical and mechanical parameter envelope.

Substiute Parts

SS19L MQG

Taiwan Semiconductor CorporationIn Stock: 1076SS19L MQG Datasheet

Current PartRFQ

SS19L

Taiwan Semiconductor CorporationIn Stock: 7640SS19L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS19L MQG is permissible with equivalent parts that maintain identical electrical performance across all critical parameters. The substitution logic is based strictly on the following key parameters:

• Voltage - DC Reverse (Vr) (Max): 90 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 800 mV @ 1 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 50 µA @ 90 V
• Operating Temperature - Junction: -55°C to 150°C
• Package / Case: DO-219AB (Sub SMA)
• Mounting Type: Surface Mount
• Technology: Schottky

The SS19L part number from Taiwan Semiconductor Corporation, available in Cut Tape (CT) and Digi-Reel® packaging formats, meets all electrical and mechanical requirements for direct substitution. This part maintains identical parametric specifications while differing only in product status classification and packaging presentation.

Parameter Comparison

Engineering Selection Recommendations

The SS19L substitute part is electrically and mechanically equivalent to the SS19L MQG main part number. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications, thermal operating range, and package configuration.

The primary distinction between these parts is product status classification. The main part (SS19L MQG) carries Active status, indicating ongoing manufacturing support and suitability for new design implementations. The substitute part (SS19L) is classified as Not For New Designs, which indicates reduced manufacturing priority or planned phase-out.

Both parts maintain full RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in applications subject to environmental and hazardous substance restrictions. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling.

Selection between these equivalent parts should be based on supply availability, inventory requirements, and design timeline considerations. For new design implementations where long-term component availability is a priority, the Active status part (SS19L MQG) is the preferred selection. For applications where immediate availability or existing inventory utilization is the primary concern, the SS19L substitute provides identical electrical performance.

Frequently Asked Questions (FAQ)

Q: Are the SS19L MQG and SS19L electrically interchangeable?

A: Yes. Both parts are manufactured by Taiwan Semiconductor Corporation and maintain identical electrical specifications including 90 V reverse voltage rating, 1 A average rectified current, 800 mV forward voltage drop at 1 A, and fast recovery characteristics. They are direct electrical equivalents.

Q: What is the significance of the "Not For New Designs" status on the substitute part?

A: This classification indicates that while the SS19L substitute part remains available and fully functional, the manufacturer has deprioritized this part number for new product development. Existing designs using this part may continue to source it, but new designs should preferentially use the Active status part (SS19L MQG) to ensure long-term supply continuity.

Q: Are the package configurations identical between these parts?

A: Yes. Both the SS19L MQG and SS19L use the DO-219AB package in Sub SMA format with surface mount mounting type. They are mechanically compatible and require identical PCB footprints and assembly processes.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected. They carry identical MSL ratings of 1 (Unlimited), indicating no moisture sensitivity restrictions. They are suitable for applications subject to environmental and hazardous substance regulations.

Q: What is the difference in packaging presentation between these parts?

A: The main part (SS19L MQG) is available in standard packaging, while the substitute part (SS19L) is available in Cut Tape (CT) and Digi-Reel® formats. These are presentation and delivery format differences only and do not affect component performance or compatibility.

Q: Can the SS19L substitute be used in existing designs currently using SS19L MQG?

A: Yes. The SS19L substitute provides identical electrical and mechanical performance and can be used as a direct replacement in existing designs without circuit modifications or re-qualification requirements.

Q: What thermal operating range do these parts support?

A: Both parts operate across a junction temperature range of -55°C to 150°C, providing identical thermal performance characteristics for applications requiring extended temperature operation.