S1MSWF-7 Equivalent & Substitute Parts

Part Overview

The S1MSWF-7 is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123F package. Manufactured by Diodes Incorporated, this component is classified as Obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and procurement continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	1000 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Reverse Recovery Time (trr)	1 µs
Current - Reverse Leakage @ Vr	10 µA @ 1000 V
Package / Case	SOD-123F
Operating Temperature - Junction	-55°C ~ 150°C
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the S1MSWF-7 is determined by equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 1000 V
Current - Average Rectified (Io): 1 A
Package / Case: SOD-123F (or compatible variant SOD-123FL)
Operating Temperature - Junction: -55°C to 150°C minimum
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Up to 1.3 V @ 1 A
Reverse Recovery Time (trr): Up to 1.2 µs for standard recovery; up to 500 ns for fast recovery variants
Current - Reverse Leakage @ Vr: 1 µA to 10 µA @ 1000 V
Capacitance @ Vr, F: 2.8 pF to 10 pF @ 4V, 1MHz

Substitute parts are grouped by manufacturer and product status. Direct manufacturer equivalents from Diodes Incorporated maintain identical or superior electrical characteristics. Cross-manufacturer substitutes from Panjit International Inc., Comchip Technology, and onsemi provide parametric equivalence with AEC-Q101 automotive qualification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	trr	Ir @ Vr	Package	Temp Range
S1MSWF-7	Diodes Incorporated	Obsolete	1000 V	1 A	1.1 V @ 1 A	1 µs	10 µA @ 1000 V	SOD-123F	-55°C ~ 150°C
S1MSWFQ-7	Diodes Incorporated	Active	1000 V	1 A	1.1 V @ 1 A	1 µs	10 µA @ 1000 V	SOD-123F	-55°C ~ 150°C
S1MSWFM-7	Diodes Incorporated	Active	1000 V	1 A	1.1 V @ 1 A	1.2 µs	10 µA @ 1000 V	SOD-123F	-55°C ~ 150°C
S1MSWFN-7	Diodes Incorporated	Active	1000 V	1 A	1.1 V @ 1 A	1 µs	10 µA @ 1000 V	SOD-123F	-55°C ~ 150°C
RS1MSWFM-7	Diodes Incorporated	Active	1000 V	1 A	1.3 V @ 1 A	500 ns	10 µA @ 1000 V	SOD-123F	-55°C ~ 150°C
GS1010FL_R1_00001	Panjit International Inc.	Active	1000 V	1 A	1.1 V @ 1 A	Not specified	1 µA @ 1000 V	SOD-123FL	-50°C ~ 150°C
ACGRMS4007-HF	Comchip Technology	Active	1000 V	1 A	1.1 V @ 1 A	Not specified	10 µA @ 1000 V	SOD-123F	-55°C ~ 150°C
NRVS1MFL	onsemi	Not For New Designs	1000 V	1 A	1.1 V @ 1 A	2 µs	1 µA @ 1000 V	SOD-123F	-55°C ~ 150°C

Engineering Selection Recommendations

Primary Substitutes (Diodes Incorporated):

S1MSWFQ-7 and S1MSWFN-7 are direct functional equivalents to the obsolete S1MSWF-7, with identical electrical parameters and Active product status. Both maintain AEC-Q101 automotive qualification and ROHS3 compliance. S1MSWFQ-7 is available in Tape & Reel packaging with 1447 units in stock. S1MSWFN-7 is the manufacturer-recommended replacement with 850 units in stock.

S1MSWFM-7 is an Active substitute with marginally extended reverse recovery time (1.2 µs versus 1 µs) and reduced capacitance (2.8 pF versus 6 pF). This variant is suitable for applications where lower capacitance is beneficial. Tape & Reel packaging with 2806 units in stock.

RS1MSWFM-7 is an Active fast recovery variant with 500 ns reverse recovery time and 1.3 V forward voltage. This part is suitable for applications requiring faster switching characteristics. Tape & Reel packaging with 3457 units in stock.

Cross-Manufacturer Substitutes:

GS1010FL_R1_00001 (Panjit International Inc.) provides parametric equivalence with identical voltage and current ratings, 1.1 V forward voltage, and ROHS3 compliance. Operating temperature minimum is -50°C (versus -55°C). Extensive inventory availability (365,400 units). Package variant is SOD-123FL.

ACGRMS4007-HF (Comchip Technology) maintains full parametric equivalence with AEC-Q101 automotive qualification. Capacitance specification is 10 pF (higher than original 6 pF). Limited inventory (750 units).

Not Recommended for New Designs:

NRVS1MFL (onsemi) is classified as Not For New Designs and should not be selected for new applications despite parametric equivalence.

Frequently Asked Questions (FAQ)

Q: Can S1MSWFQ-7 directly replace S1MSWF-7 in existing designs?

A: Yes. S1MSWFQ-7 is electrically identical to S1MSWF-7 across all critical parameters: 1000 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage at 1 A, 1 µs reverse recovery time, and identical operating temperature range. Both are AEC-Q101 qualified and ROHS3 compliant. The primary difference is product status (Active versus Obsolete) and packaging format (Tape & Reel versus bulk).

Q: What is the difference between S1MSWFM-7 and S1MSWF-7?

A: S1MSWFM-7 maintains identical forward voltage (1.1 V @ 1 A) and reverse voltage (1000 V) specifications. Reverse recovery time is marginally longer at 1.2 µs compared to 1 µs. Capacitance is significantly lower at 2.8 pF versus 6 pF. Both are AEC-Q101 qualified. S1MSWFM-7 is Active and available in Tape & Reel packaging.

Q: Is RS1MSWFM-7 suitable as a substitute?

A: RS1MSWFM-7 is suitable for applications where fast recovery characteristics are required. It features 500 ns reverse recovery time (versus 1 µs in the original) and forward voltage of 1.3 V at 1 A (versus 1.1 V). All other parameters including voltage ratings, current rating, and temperature range are equivalent. This part is Active and available in Tape & Reel packaging.

Q: Can I use GS1010FL_R1_00001 from Panjit International Inc. as a substitute?

A: Yes, with one operational consideration. GS1010FL_R1_00001 meets all critical electrical parameters: 1000 V reverse voltage, 1 A average rectified current, and 1.1 V forward voltage. The operating temperature minimum is -50°C (versus -55°C for the original). If your application operates above -50°C, this part is fully compatible. Package variant is SOD-123FL, which is mechanically compatible with SOD-123F footprints. Extensive inventory is available.

Q: What does "Not For New Designs" mean for NRVS1MFL?

A: NRVS1MFL is available for existing design support and maintenance applications only. New designs should not incorporate this part. Although it meets parametric requirements, the manufacturer has discontinued active development and support. Alternative parts with Active status should be selected for new applications.

Q: Are there packaging differences between these substitutes?

A: Most substitutes use SOD-123F packaging, identical to the original S1MSWF-7. GS1010FL_R1_00001 uses SOD-123FL variant, which is mechanically compatible with SOD-123F footprints. Packaging format differences exist: S1MSWFQ-7, S1MSWFM-7, RS1MSWFM-7, GS1010FL_R1_00001, ACGRMS4007-HF, and NRVS1MFL are available in Tape & Reel format, while S1MSWFN-7 packaging format is not specified.

Q: Which substitute offers the best inventory availability?

A: GS1010FL_R1_00001 from Panjit International Inc. has the highest inventory with 365,400 units in stock. Among Diodes Incorporated parts, RS1MSWFM-7 has 3457 units, S1MSWFM-7 has 2806 units, and S1MSWFQ-7 has 1447 units available.

Q: Do all substitutes maintain AEC-Q101 automotive qualification?

A: Most substitutes maintain AEC-Q101 qualification: S1MSWFQ-7, S1MSWFM-7 (not specified in input), RS1MSWFM-7, ACGRMS4007-HF, and NRVS1MFL. GS1010FL_R1_00001 from Panjit International Inc. does not list AEC-Q101 qualification in the provided specifications. For automotive applications requiring AEC-Q101 certification, select from the qualified alternatives.

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