S1GFL Equivalent & Substitute Parts

Part Overview

The S1GFL is a general-purpose rectifier diode manufactured by onsemi, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123F package. This component is classified as "Not For New Designs," indicating it has been superseded in onsemi's product portfolio. Identifying equivalent and substitute parts is necessary for applications requiring continued support, legacy system maintenance, or when the primary part becomes unavailable.

Substiute Parts

S1GFL

onsemiIn Stock: 15585S1GFL Datasheet

Current PartRFQ

S07G-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 658515S07G-GS08 Datasheet

SimilarRFQ

GS1004FL_R1_00001

Panjit International Inc.In Stock: 47169GS1004FL_R1_00001 Datasheet

Parametric EquivalentRFQ

SL1G

Diotec SemiconductorIn Stock: 3503SL1G Datasheet

Parametric EquivalentRFQ

SL1G-AQ

Diotec SemiconductorIn Stock: 64156SL1G-AQ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1GFL are classified based on electrical parameter compatibility and mechanical fit. The primary substitution criteria are:

Critical Parameters for Substitution:

• Voltage - DC Reverse (Vr) (Max): 400 V minimum
• Current - Average Rectified (Io): 1 A or greater
• Voltage - Forward (Vf) (Max) @ If: 1.1 V or less @ 1 A
• Package / Case: SOD-123F or equivalent surface mount package
• Mounting Type: Surface Mount
• Operating Temperature Range: -50°C to 150°C or wider

Substitution Groups:

Group 1 - Parametric Equivalents (Identical Electrical and Package Specifications): Parts GS1004FL_R1_00001, SL1G, and SL1G-AQ meet all critical parameters with identical 400 V / 1 A ratings and SOD-123F packaging. These parts are direct functional replacements with active product status.

Group 2 - Parametric Substitute (Reduced Current Rating): Part S07G-GS08 provides 400 V reverse voltage but with 700 mA average rectified current, which is below the 1 A specification of the S1GFL. This part is suitable only for applications where the actual current requirement does not exceed 700 mA. The package is DO-219AB (SMF), which differs from SOD-123F.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications and Package):

GS1004FL_R1_00001 (Panjit International Inc.), SL1G (Diotec Semiconductor), and SL1G-AQ (Diotec Semiconductor) are parametric equivalents to the S1GFL. All three parts maintain the 400 V / 1 A rating, SOD-123F package, and -50°C to 150°C operating temperature range. All substitute parts carry active product status and ROHS3 compliance. GS1004FL_R1_00001 and SL1G-AQ offer higher inventory availability (47,100 and 64,073 units respectively) compared to SL1G (3,418 units).

For Current-Limited Applications:

S07G-GS08 (Vishay General Semiconductor - Diodes Division) is suitable only for applications where the average rectified current requirement does not exceed 700 mA. This part provides 400 V reverse voltage rating and active product status with AEC-Q101 automotive qualification. The DO-219AB package differs from the SOD-123F, requiring PCB layout verification. Reverse leakage current is higher at 10 µA compared to 1 µA for the S1GFL.

Compliance Considerations:

All substitute parts are ROHS3 compliant and carry EAR99 ECCN classification, matching the regulatory status of the S1GFL. Moisture sensitivity levels are equivalent or not applicable across all options.

Frequently Asked Questions (FAQ)

Q: Can GS1004FL_R1_00001, SL1G, or SL1G-AQ be used as direct replacements for S1GFL?

A: Yes. GS1004FL_R1_00001, SL1G, and SL1G-AQ are parametric equivalents with identical 400 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage, and SOD-123F package specifications. All three parts support the same operating temperature range (-50°C to 150°C) and carry active product status.

Q: What is the difference between the SOD-123F package used by S1GFL, GS1004FL_R1_00001, SL1G, and SL1G-AQ versus the DO-219AB package of S07G-GS08?

A: SOD-123F and DO-219AB are distinct surface mount packages with different physical dimensions and PCB footprints. SOD-123F is a smaller package, while DO-219AB (SMF) is larger. Direct PCB substitution between these packages is not possible without layout modification.

Q: Can S07G-GS08 replace S1GFL in all applications?

A: S07G-GS08 is suitable only for applications where the average rectified current requirement does not exceed 700 mA. The S1GFL is rated for 1 A, so S07G-GS08 cannot be used in circuits requiring the full 1 A current capacity. Additionally, the different package (DO-219AB versus SOD-123F) requires PCB layout changes.

Q: Why is S1GFL marked as "Not For New Designs"?

A: The "Not For New Designs" status indicates that onsemi has superseded this part in their product portfolio. For new designs, GS1004FL_R1_00001, SL1G, or SL1G-AQ are recommended as they carry active product status and provide equivalent electrical performance.

Q: Are there any differences in reverse leakage current between the substitute parts?

A: Yes. S1GFL, GS1004FL_R1_00001, SL1G, and SL1G-AQ all specify 1 µA reverse leakage at 400 V. S07G-GS08 specifies 10 µA at 400 V, which is higher. For applications sensitive to leakage current, the lower-leakage options are preferred.

Q: What is the reverse recovery time difference between S1GFL and the substitute parts?

A: S1GFL specifies 2 µs reverse recovery time. SL1G and SL1G-AQ specify 1 µs, which is faster. S07G-GS08 specifies 1.8 µs. GS1004FL_R1_00001 does not specify this parameter. Faster recovery time may provide performance benefits in high-frequency switching applications.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. S1GFL, GS1004FL_R1_00001, SL1G, SL1G-AQ, and S07G-GS08 are all ROHS3 compliant, ensuring compatibility with environmental and regulatory requirements.