SS19LHMTG Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS19LHMTG is a 90V, 1A Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the DO-219AB (Sub SMA) package. This component is classified as an automotive-grade diode with AEC-Q101 qualification and is currently in active product status.

The SS19LHMTG serves applications requiring fast recovery Schottky rectification with low forward voltage drop characteristics. Identification of equivalent and substitute parts becomes necessary when managing inventory constraints, addressing supply chain disruptions, or transitioning designs to alternative qualified components within the same electrical and mechanical parameter envelope.

Substiute Parts

SS19LHMTG

Taiwan Semiconductor CorporationIn Stock: 1211SS19LHMTG Datasheet

Current PartRFQ

SS19L

Taiwan Semiconductor CorporationIn Stock: 7640SS19L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS19LHMTG is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• 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

Mechanical Parameters (Must Match):

• Package / Case: DO-219AB (Sub SMA)
• Mounting Type: Surface Mount
• Technology: Schottky

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

The SS19L is identified as a parametric equivalent to the SS19LHMTG. Both components share identical electrical specifications, package configuration, and compliance certifications. The primary distinction is product status: SS19LHMTG is active, while SS19L is designated as Not For New Designs.

Parameter Comparison

Engineering Selection Recommendations

For Active Designs: The SS19LHMTG is the preferred selection for new designs and ongoing production. This component maintains active product status with full manufacturer support and is qualified to AEC-Q101 automotive standards.

For Existing Designs Using SS19L: The SS19L is electrically and mechanically equivalent to the SS19LHMTG and provides direct substitution capability. However, SS19L is designated as Not For New Designs, indicating that this part number is in end-of-life or transition status. Designs currently utilizing SS19L should transition to SS19LHMTG to ensure long-term supply continuity and manufacturer support.

Compliance Considerations: Both components satisfy ROHS3 compliance requirements and carry REACH Unaffected status, making them suitable for applications subject to environmental and regulatory restrictions. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling.

Automotive Applications: Both the SS19LHMTG and SS19L carry automotive-grade classification with AEC-Q101 qualification, confirming suitability for automotive circuit protection and rectification applications.

Frequently Asked Questions (FAQ)

Q: Can SS19L be used as a direct replacement for SS19LHMTG in production?

A: Yes. The SS19L and SS19LHMTG are parametric equivalents with identical electrical specifications, package configuration (DO-219AB Sub SMA), and compliance certifications. Direct substitution is electrically and mechanically valid. However, SS19L carries Not For New Designs status, indicating supply or lifecycle constraints. For ongoing production, SS19LHMTG is the recommended primary selection.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching the following parameters: Voltage - DC Reverse (90 V), Current - Average Rectified (1 A), Voltage - Forward (800 mV @ 1 A), Speed (Fast Recovery ≤ 500ns), Current - Reverse Leakage (50 µA @ 90 V), Operating Temperature Range (-55°C to 150°C), Package Type (DO-219AB Sub SMA), and Mounting Type (Surface Mount). All compliance parameters including RoHS Status and MSL must also align.

Q: Are there package or mounting differences between SS19LHMTG and SS19L?

A: No. Both components use the DO-219AB package designation (Sub SMA) and are configured for surface mount assembly. Mechanical compatibility is complete, and no PCB layout or assembly process modifications are required when substituting between these parts.

Q: What is the significance of the "Not For New Designs" status on SS19L?

A: This designation indicates that SS19L is in end-of-life or transition phase and is not recommended for incorporation into new product designs. Existing designs using SS19L should plan migration to SS19LHMTG to maintain supply chain stability and manufacturer support continuity.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SS19LHMTG and SS19L are classified as automotive-grade components with AEC-Q101 qualification, confirming their suitability for automotive applications requiring rectification and circuit protection functions.

Q: Are there any environmental or regulatory compliance differences?

A: No. Both components are ROHS3 compliant, carry REACH Unaffected status, and have MSL rating of 1 (Unlimited). They are equivalent in all environmental and regulatory compliance aspects.