SS12LHMQG Equivalent & Substitute Parts

Part Overview

The SS12LHMQG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 20V DC reverse voltage and 1A average rectified current in a Sub SMA surface mount package. This component is classified as Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative sources become necessary due to inventory availability, supply chain optimization, or design phase transitions where newer qualified alternatives are preferred.

Substiute Parts

SS12LHMQG

Taiwan Semiconductor CorporationIn Stock: 801SS12LHMQG Datasheet

Current PartRFQ

SS12L

Taiwan Semiconductor CorporationIn Stock: 1536SS12L Datasheet

Parametric EquivalentRFQ

SL02-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 43948SL02-GS08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS12LHMQG is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 20V minimum
• Current - Average Rectified (Io): 1A minimum
• Technology: Schottky diode
• Speed classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Compatibility Criteria:

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

Compliance Requirements:

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

Substitute parts are classified into two categories: Parametric Equivalent (identical electrical and mechanical specifications) and Similar (enhanced electrical performance within the same package and compliance framework).

Parameter Comparison

Engineering Selection Recommendations

SS12L (Taiwan Semiconductor Corporation): This part is a parametric equivalent to the SS12LHMQG with identical electrical specifications and package configuration. However, SS12L carries a "Not For New Designs" product status designation. Selection of SS12L is appropriate for legacy system maintenance, repair operations, or inventory consolidation where existing design validation has been completed. New design implementations should prioritize the SS12LHMQG or SL02-GS08.

SL02-GS08 (Vishay General Semiconductor - Diodes Division): This part is classified as a similar substitute with enhanced electrical performance. The SL02-GS08 provides 1.1A average rectified current (10% higher than the 1A specification), lower forward voltage drop (420 mV versus 450 mV), and reduced reverse leakage current (250 µA versus 400 µA). The SL02-GS08 maintains identical package configuration (DO-219AB), mounting type (Surface Mount), and compliance certifications (ROHS3, MSL 1). The SL02-GS08 carries Active product status and is suitable for new design implementations where improved thermal performance and lower leakage characteristics are beneficial.

Frequently Asked Questions (FAQ)

Q: Can SS12L be used as a direct replacement for SS12LHMQG?

A: Yes, SS12L is electrically and mechanically equivalent to SS12LHMQG. Both parts share identical voltage ratings (20V), current ratings (1A), forward voltage characteristics (450 mV @ 1A), and package configuration (DO-219AB Sub SMA). The primary distinction is product status: SS12L is designated "Not For New Designs," making it suitable for maintenance and repair applications but not recommended for new design implementations.

Q: What are the advantages of SL02-GS08 over SS12LHMQG?

A: The SL02-GS08 offers three measurable performance improvements: (1) higher average rectified current rating of 1.1A compared to 1A, (2) lower forward voltage drop of 420 mV versus 450 mV, and (3) reduced reverse leakage current of 250 µA versus 400 µA. These characteristics result in lower power dissipation and improved thermal performance in the same DO-219AB package. Both parts maintain identical compliance certifications and operating temperature ranges.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. SS12LHMQG, SS12L, and SL02-GS08 all use the DO-219AB (Sub SMA) package configuration with identical surface mount mechanical specifications. PCB footprints designed for any one of these parts accommodate the others without modification.

Q: What is the significance of the "Not For New Designs" status on SS12L?

A: "Not For New Designs" indicates that the manufacturer has transitioned this part to legacy status and does not recommend its use in new product development. Existing designs utilizing SS12L may continue in production, and the part remains available for maintenance and repair. New designs should specify either SS12LHMQG or SL02-GS08.

Q: Do all substitute parts meet automotive qualification requirements?

A: SS12LHMQG carries AEC-Q101 automotive qualification. SS12L and SL02-GS08 specifications provided do not explicitly list AEC-Q101 qualification status. Automotive applications requiring AEC-Q101 certification should confirm qualification status with the respective manufacturers before implementation.

Q: What is the difference in reverse leakage current between the parts?

A: SS12LHMQG and SS12L both specify 400 µA reverse leakage current at 20V. SL02-GS08 specifies 250 µA reverse leakage current at 20V, representing a 37.5% reduction. Lower reverse leakage current reduces standby power consumption and improves circuit efficiency in applications with extended idle periods.

Q: Can SL02-GS08 be used in applications designed for 1A current rating?

A: Yes. SL02-GS08 is rated for 1.1A average rectified current, which exceeds the 1A requirement. The part operates within specification when used in circuits designed for 1A operation. The additional current margin provides design headroom and improved reliability margins.