S1JFL Equivalent & Substitute Parts

Part Overview

The S1JFL is a general-purpose rectifier diode manufactured by onsemi, rated for 600 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 This component is classified as "Not For New Designs," indicating it has been superseded in onsemi's product portfolio.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 ongoing production support, maintenance applications, and design continuity where this diode is already deployed.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	1	µA @ 600 V
Package / Case	SOD-123F	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-50 to 150	°C

Substitute Part Grouping Explanation

Substitute parts for the S1JFL are classified into two categories based on parametric alignment:

Parametric Equivalents (identical electrical and mechanical specifications):

GS1006FL_R1_00001 (Panjit International Inc.)
SL1J-AQ (Diotec Semiconductor)

These parts match the S1JFL across all critical parameters: 600 V reverse voltage rating, 1 A average rectified current, 1.1 V forward voltage drop at 1 A, standard recovery speed, and SOD-123F package configuration. Both are active products with current manufacturing status and full compliance certifications.

Functional Substitute (compatible electrical performance with package variation):

S07J-GS08 (Vishay General Semiconductor - Diodes Division)

This part maintains the 600 V reverse voltage and standard recovery characteristics but operates at 700 mA average rectified current (lower than the 1 A rating of the S1JFL) and uses a DO-219AB package instead of SOD-123F. This substitute is suitable for applications where the 700 mA current rating is sufficient and package footprint differences are acceptable.

Parameter Comparison

Parameter	S1JFL (onsemi)	GS1006FL_R1_00001 (Panjit)	SL1J-AQ (Diotec)	S07J-GS08 (Vishay)
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	1 A	1 A	1 A	700 mA
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A
Speed	Standard Recovery >500ns, >200mA	Standard Recovery >500ns, >200mA	Standard Recovery >500ns, >200mA	Standard Recovery >500ns, >200mA
Reverse Recovery Time (trr)	2 µs	Not specified	1 µs	1.8 µs
Current - Reverse Leakage @ Vr	1 µA @ 600 V	1 µA @ 600 V	1 µA @ 600 V	10 µA @ 600 V
Package / Case	SOD-123F	SOD-123F	SOD-123F	DO-219AB
Operating Temperature - Junction	-50 to 150 °C	-50 to 150 °C	-50 to 150 °C	-55 to 150 °C
Product Status	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not applicable	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement:

GS1006FL_R1_00001 and SL1J-AQ are the preferred substitutes for the S1JFL. Both parts are parametric equivalents with identical voltage ratings, current ratings, forward voltage characteristics, and SOD-123F package footprints. Both are active products with current manufacturing support. GS1006FL_R1_00001 carries ROHS3 compliance and full regulatory certifications. SL1J-AQ includes AEC-Q101 automotive qualification and is available in high inventory quantities (96,772 pieces).

For Current-Limited Applications:

S07J-GS08 is suitable for applications where the circuit design operates at or below 700 mA average rectified current. This part maintains the 600 V voltage rating and standard recovery characteristics. The DO-219AB package requires PCB layout modification compared to SOD-123F. S07J-GS08 carries ROHS3 compliance and is available in substantial inventory (248,100 pieces).

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and EAR99 export classification. GS1006FL_R1_00001 and S07J-GS08 provide complete regulatory documentation. SL1J-AQ status for REACH and RoHS is vendor-defined; verification with the manufacturer is required for applications with strict regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can GS1006FL_R1_00001 be used as a direct replacement for S1JFL?

A: Yes. GS1006FL_R1_00001 is a parametric equivalent with identical electrical ratings (600 V, 1 A), forward voltage drop (1.1 V @ 1 A), and SOD-123F package. No circuit modifications are required.

Q: What is the difference between SL1J-AQ and GS1006FL_R1_00001?

A: Both are parametric equivalents to S1JFL with identical voltage and current ratings. SL1J-AQ has a faster reverse recovery time (1 µs vs. 2 µs) and includes AEC-Q101 automotive qualification. GS1006FL_R1_00001 provides complete ROHS3 and REACH documentation. Selection depends on application requirements and regulatory documentation needs.

Q: Why does S07J-GS08 have a lower current rating?

A: S07J-GS08 is rated for 700 mA average rectified current compared to the S1JFL's 1 A rating. This part is suitable only for applications where the circuit operates at or below 700 mA. The 600 V voltage rating and standard recovery characteristics remain compatible.

Q: Can S07J-GS08 be used in place of S1JFL without PCB changes?

A: No. S07J-GS08 uses a DO-219AB package while S1JFL uses SOD-123F. The packages have different footprints and pin configurations. PCB layout modification is required.

Q: Are all substitute parts RoHS compliant?

A: GS1006FL_R1_00001 and S07J-GS08 are ROHS3 compliant. SL1J-AQ has "Not applicable" RoHS status; manufacturer verification is required for applications with mandatory RoHS compliance requirements.

Q: What is the inventory status of these substitutes?

A: GS1006FL_R1_00001 has 6,315 pieces in stock. SL1J-AQ has 96,772 pieces in stock. S07J-GS08 has 248,100 pieces in stock. All are available as new original components.

Q: Which substitute has the fastest reverse recovery time?

A: SL1J-AQ has the fastest reverse recovery time at 1 µs, compared to S07J-GS08 at 1.8 µs and S1JFL at 2 µs. This characteristic is relevant for high-frequency switching applications.

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