S1DFL Equivalent & Substitute Parts

Part Overview

The S1DFL is a general-purpose rectifier diode manufactured by onsemi, rated for 200 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 This component is classified as "Not For New Designs," indicating it has been superseded in onsemi's product portfolio.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 from inventory.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	V
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	1	µA @ 200 V
Package / Case	SOD-123F	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-50°C ~ 150°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the S1DFL are grouped based on electrical and mechanical compatibility within the rectifier diode category. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Voltage - Forward (Vf) (Max) @ If: Must not exceed 1.1 V @ 1 A
Package / Case: SOD-123F or compatible surface mount package
Mounting Type: Surface Mount
Operating Temperature Range: Must accommodate -50°C to 150°C junction temperature

Substitution Categories:

Direct Electrical Equivalents (Same Package): Parts maintaining identical or superior electrical ratings within the SOD-123F package form factor.

Parametric Equivalents (Same Package): Parts with matching electrical specifications and SOD-123F packaging, differing only in manufacturer or product status.

Functional Alternatives (Different Package): Parts meeting all electrical requirements but in alternative surface mount packages (DO-219AB), suitable for applications where package footprint flexibility exists.

Current-Limited Alternatives: Parts with reduced current ratings (200 mA) that function in lower-current applications but do not serve as full substitutes for 1 A designs.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs]	Ir @ Vr [µA]	Package	Product Status	Temp Range [°C]
S1DFL	onsemi	200	1	1.1 @ 1 A	2	1 @ 200 V	SOD-123F	Not For New Designs	-50 ~ 150
SM4003PL-TP	Micro Commercial Co	200	1	1.1 @ 1 A	—	5 @ 200 V	SOD-123F	Not For New Designs	-65 ~ 175
GS1002FL_R1_00001	Panjit International Inc.	200	1	1.1 @ 1 A	—	1 @ 200 V	SOD-123F	Active	-50 ~ 150
SL1D	Diotec Semiconductor	200	1	1.1 @ 1 A	1	1 @ 200 V	SOD-123F	Active	-50 ~ 150
BAS21H,115	Nexperia USA Inc.	200	0.2	1.25 @ 0.2 A	0.05	0.1 @ 200 V	SOD-123F	Active	—
S07D-GS08	Vishay General Semiconductor - Diodes Division	200	0.7	1.1 @ 1 A	1.8	10 @ 200 V	DO-219AB	Active	-55 ~ 150

Engineering Selection Recommendations

For Direct Replacement (1 A Applications):

The GS1002FL_R1_00001 (Panjit International Inc.) is the primary substitute for the S1DFL. Both parts maintain identical electrical specifications (200 V, 1 A, 1.1 V forward voltage), identical package geometry (SOD-123F), and matching operating temperature range (-50°C to 150°C). The GS1002FL_R1_00001 holds Active product status, ensuring continued availability and manufacturing support. This part is suitable for direct PCB substitution without design modification.

The SL1D (Diotec Semiconductor) provides an equivalent alternative with Active product status. Electrical parameters are identical to the S1DFL. The SL1D features a shorter reverse recovery time (1 µs versus 2 µs), which may provide marginal performance benefits in switching applications. This part is also suitable for direct PCB substitution.

The SM4003PL-TP (Micro Commercial Co) matches all critical electrical specifications and package requirements. Although classified as "Not For New Designs," it maintains the same 200 V / 1 A rating and SOD-123F package. The SM4003PL-TP offers an extended operating temperature range (-65°C to 175°C), which may be advantageous in extreme temperature environments. This part is suitable for direct PCB substitution.

For Current-Limited Applications (≤200 mA):

The BAS21H,115 (Nexperia USA Inc.) is suitable only for applications requiring 200 mA or less. This part is not a full substitute for 1 A designs. The BAS21H,115 holds Active product status and includes AEC-Q100 automotive qualification. Forward voltage is slightly elevated (1.25 V @ 200 mA) compared to the S1DFL specification. Use this part only when application current requirements do not exceed 200 mA.

For Alternative Package Implementations:

The S07D-GS08 (Vishay General Semiconductor - Diodes Division) provides functional equivalence in a larger DO-219AB surface mount package. This part maintains 200 V reverse voltage rating and supports 700 mA average rectified current. The S07D-GS08 holds Active product status and includes AEC-Q101 automotive qualification. This part is suitable for applications where package footprint flexibility exists and current requirements do not exceed 700 mA. PCB layout modification is required due to different package geometry.

Compliance and Certification:

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the S1DFL regulatory profile. The GS1002FL_R1_00001 and SL1D are recommended for new applications requiring continued long-term support due to their Active product status.

Frequently Asked Questions (FAQ)

Q: Can the BAS21H,115 replace the S1DFL in all applications?

A: No. The BAS21H,115 is rated for 200 mA average rectified current, while the S1DFL is rated for 1 A. The BAS21H,115 is suitable only for applications requiring 200 mA or less. Using the BAS21H,115 in a 1 A application will result in component overstress and potential failure.

Q: What is the difference between the GS1002FL_R1_00001 and the SL1D?

A: Both parts provide identical electrical specifications and SOD-123F packaging. The primary difference is manufacturer: GS1002FL_R1_00001 is manufactured by Panjit International Inc., while SL1D is manufactured by Diotec Semiconductor. The SL1D features a shorter reverse recovery time (1 µs versus unspecified for GS1002FL_R1_00001). Both parts are suitable for direct substitution.

Q: Can I use the S07D-GS08 as a direct PCB replacement for the S1DFL?

A: No. The S07D-GS08 uses a DO-219AB package, which has a different footprint than the SOD-123F package used by the S1DFL. PCB layout modification is required. However, the S07D-GS08 is electrically suitable for applications requiring up to 700 mA at 200 V.

Q: Why is the S1DFL marked "Not For New Designs"?

A: The "Not For New Designs" status indicates that onsemi has superseded this part in their product portfolio. The part remains available from existing inventory but will not receive new design support or manufacturing improvements. For new designs, select an Active-status substitute such as GS1002FL_R1_00001 or SL1D.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, matching the S1DFL regulatory profile. All parts are also REACH unaffected.

Q: What is the significance of reverse recovery time (trr) in selecting a substitute?

A: Reverse recovery time affects switching speed and efficiency in rectifier applications. The S1DFL specifies 2 µs trr. The SL1D provides 1 µs trr, offering faster switching characteristics. The SM4003PL-TP does not specify trr. For applications sensitive to switching speed, the SL1D may provide performance advantages. For standard rectification applications, all listed substitutes are functionally equivalent.

Q: Can I use the SM4003PL-TP in high-temperature applications?

A: Yes. The SM4003PL-TP supports an operating temperature range of -65°C to 175°C, which exceeds the S1DFL specification of -50°C to 150°C. The SM4003PL-TP is suitable for applications requiring extended temperature operation.

Q: What does "Parametric Equivalent" mean in the part listing?

A: A parametric equivalent part maintains identical electrical specifications and package geometry as the reference part but may be manufactured by a different company. Parametric equivalents are suitable for direct substitution without design modification.

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