SS19L RQG Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS19L RQG 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 is classified as a fast recovery diode with switching characteristics suitable for high-frequency rectification circuits.

The SS19L RQG maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Alternative equivalent parts are necessary when the primary part number becomes unavailable or when specific packaging formats are required for manufacturing processes.

Substiute Parts

SS19L RQG

Taiwan Semiconductor CorporationIn Stock: 935SS19L RQG Datasheet

Current PartRFQ

SS19L

Taiwan Semiconductor CorporationIn Stock: 7640SS19L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS19L RQG is determined by electrical and mechanical parameter equivalence within the Schottky diode rectifier category. The critical parameters that establish substitution eligibility are:

Electrical Parameters:

• Voltage - DC Reverse (Vr) Maximum: 90 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) Maximum @ If: 800 mV @ 1 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 50 µA @ 90 V

Mechanical Parameters:

• Mounting Type: Surface Mount
• Package / Case: DO-219AB (Sub SMA)
• Operating Temperature - Junction: -55°C to 150°C

Compliance Parameters:

• Technology: Schottky
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The SS19L part number represents the parametric equivalent base designation. Substitute parts sharing identical electrical specifications and package format are considered direct functional equivalents regardless of packaging configuration (Cut Tape, Digi-Reel, or alternative supplier reels).

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (SS19L RQG): The SS19L RQG maintains Active product status and is the recommended selection for new circuit designs. This part number is actively manufactured and supported by Taiwan Semiconductor Corporation with full compliance to ROHS3 and REACH regulations.

Substitute Selection (SS19L): The SS19L substitute part is electrically and mechanically identical to the main part number, with all critical parameters matching exactly. However, this part carries a "Not For New Designs" status designation. The SS19L substitute is suitable for replacement, repair, and legacy system applications where the original part number is unavailable. The substitute is available in alternative packaging configurations (Cut Tape and Digi-Reel formats) which may accommodate specific manufacturing or procurement workflows.

Compliance Considerations: Both the main part and substitute maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility across applications. The unlimited moisture sensitivity rating (MSL 1) eliminates moisture-related handling restrictions for both variants.

Frequently Asked Questions (FAQ)

Q: Can the SS19L substitute part be used in new product designs?

A: The SS19L carries a "Not For New Designs" status. For new circuit designs, the SS19L RQG (Active status) is the appropriate selection. The SS19L substitute is designated for replacement and legacy applications only.

Q: Are the electrical specifications identical between SS19L RQG and SS19L?

A: Yes. Both parts share identical electrical parameters: 90 V reverse voltage, 1 A average rectified current, 800 mV forward voltage drop at 1 A, fast recovery characteristics, and 50 µA reverse leakage current at 90 V.

Q: What is the difference between the packaging options for SS19L?

A: The SS19L substitute is available in Cut Tape (CT) and Digi-Reel packaging formats. Both formats contain the same DO-219AB Sub SMA package component. The packaging format difference relates to supply reel configuration and does not affect electrical or mechanical performance.

Q: Are both parts ROHS3 compliant?

A: Yes. Both SS19L RQG and SS19L are ROHS3 compliant with REACH Unaffected status, meeting regulatory requirements for electronic component applications.

Q: What is the moisture sensitivity level for these diodes?

A: Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture-related handling restrictions.

Q: Can SS19L RQG and SS19L be used interchangeably in circuit applications?

A: From an electrical and mechanical standpoint, yes. Both parts are parametrically equivalent with identical voltage, current, temperature, and package specifications. Selection between them should be based on product status requirements and availability.

Q: What is the operating temperature range for these Schottky diodes?

A: The junction operating temperature range is -55°C to 150°C for both the SS19L RQG and SS19L parts.