Equivalent & Substitute Parts for RS1MSWF-7

Part Overview

The RS1MSWF-7 is a general-purpose fast recovery rectifier diode manufactured by Diodes Incorporated, rated for 1000 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123F package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional compatibility within the same application category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	500	ns
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Package / Case	SOD-123F	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the RS1MSWF-7 is determined by strict equivalence across the following critical parameters:

Voltage Rating: All substitute parts must maintain 1000 V DC reverse voltage maximum
Current Rating: All substitute parts must support 1 A average rectified current
Forward Voltage: All substitute parts must not exceed 1.3 V forward voltage at 1 A
Recovery Characteristics: All substitute parts must exhibit fast recovery with reverse recovery time ≤ 500 ns
Package Compatibility: All substitute parts must use SOD-123F surface mount package
Operating Temperature Range: All substitute parts must support -55°C to 150°C junction temperature range
Environmental Compliance: All substitute parts must be RoHS3 compliant with MSL 1 rating

Substitute parts are grouped into two categories: MFR Recommended (active status, direct replacement) and Parametric Equivalents (active status, functionally equivalent with minor parameter variations). Secondary parameters such as reverse leakage current and junction capacitance may vary within acceptable ranges without affecting primary circuit function.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Ir @ Vr [µA]	Package	Inventory [Pcs]
RS1MSWF-7	Diodes Incorporated	Obsolete	1000	1	1.3	500	10 @ 1000V	SOD-123F	1942
RS1MSWFN-7	Diodes Incorporated	Active	1000	1	1.3	500	10 @ 1000V	SOD-123F	691
RS1MSWFM-7	Diodes Incorporated	Active	1000	1	1.3	500	10 @ 1000V	SOD-123F	3457
RS1MSWFMQ-7	Diodes Incorporated	Active	1000	1	1.3	500	10 @ 1000V	SOD-123F	3017
RS1MWF-7	Diodes Incorporated	Active	1000	1	1.3	500	5 @ 1000V	SOD-123F	29131
RS1010FL_R1_00001	Panjit International Inc.	Active	1000	1	1.3	500	1 @ 1000V	SOD-123F	20100
RS1ML	SMC Diode Solutions	Active	1000	1	1.3	500	5 @ 1000V	SOD-123F	185200
RS1MWF-HF	Comchip Technology	Active	1000	1	1.3	500	5 @ 1000V	SOD-123F	684

Engineering Selection Recommendations

Primary Recommendation: RS1MSWFN-7

The RS1MSWFN-7 is the MFR recommended substitute from Diodes Incorporated. This part maintains identical electrical specifications to the RS1MSWF-7 while offering active product status. It provides direct compatibility for existing designs without parameter deviation. REACH status differs (Unaffected vs. Affected), which may be relevant for supply chain compliance requirements.

Secondary Recommendations: RS1MSWFM-7 and RS1MSWFMQ-7

Both parts are parametric equivalents from Diodes Incorporated with active status and automotive-grade qualification (AEC-Q101). These parts are supplied in Tape & Reel packaging and maintain all critical electrical parameters. Inventory availability is higher than RS1MSWFN-7, supporting procurement continuity.

Alternative Recommendations: RS1MWF-7, RS1ML, RS1010FL_R1_00001, RS1MWF-HF

These parts meet all primary electrical and mechanical substitution criteria. RS1MWF-7 and RS1ML offer significantly higher inventory levels. RS1010FL_R1_00001 (Panjit International Inc.) provides cross-manufacturer compatibility. RS1MWF-HF (Comchip Technology) extends manufacturer diversity. All maintain SOD-123F package compatibility and operating temperature range.

Compliance Considerations

All substitute parts are RoHS3 compliant with MSL 1 rating. REACH status varies across manufacturers; designs subject to REACH restrictions should prioritize parts with REACH Unaffected designation. All parts carry EAR99 ECCN classification and identical HTSUS code (8541.10.0080).

Frequently Asked Questions (FAQ)

Q: Can RS1MSWF-7 be directly replaced with RS1MSWFN-7?

A: Yes. RS1MSWFN-7 is the MFR recommended substitute with identical electrical specifications, voltage rating, current rating, forward voltage, and recovery time. Both use SOD-123F surface mount packaging. The primary difference is product status (Active vs. Obsolete) and REACH compliance designation.

Q: What is the difference between RS1MSWFM-7 and RS1MSWFMQ-7?

A: Both parts are parametric equivalents with identical electrical specifications and automotive-grade qualification (AEC-Q101). The primary distinction is packaging designation and inventory availability. Both maintain 1000 V, 1 A ratings and SOD-123F package compatibility.

Q: Why do some substitute parts show different reverse leakage current values?

A: Reverse leakage current (Ir) is a secondary parameter that varies within acceptable ranges across manufacturers and part variants. The RS1MSWF-7 specifies 10 µA @ 1000 V, while alternatives range from 1 µA to 10 µA. All values remain within acceptable limits for general-purpose rectifier applications. This variation does not affect primary circuit function or substitution validity.

Q: Is RS1ML from SMC Diode Solutions a suitable replacement?

A: Yes. RS1ML meets all critical substitution criteria: 1000 V reverse voltage, 1 A current rating, 1.3 V forward voltage, 500 ns recovery time, and SOD-123F package. It offers the highest inventory availability (185,200 pcs) among all alternatives. REACH status is Affected, which may require verification for specific supply chain requirements.

Q: Can I use RS1010FL_R1_00001 from Panjit International Inc. as a substitute?

A: Yes. RS1010FL_R1_00001 is a parametric equivalent meeting all electrical and mechanical requirements. It is supplied by a different manufacturer (Panjit International Inc.) and offers cross-manufacturer sourcing flexibility. Reverse leakage current is lower (1 µA @ 1000 V), which is acceptable for substitution purposes.

Q: What packaging options are available for substitute parts?

A: All substitute parts use SOD-123F surface mount package. Some variants are supplied in Tape & Reel (TR) packaging for automated assembly, while others use standard packaging. Packaging designation does not affect electrical compatibility; selection depends on assembly process requirements.

Q: Are all substitute parts automotive-grade?

A: Not all. RS1MSWFM-7 and RS1MSWFMQ-7 carry automotive-grade designation with AEC-Q101 qualification, matching the original RS1MSWF-7. Other substitutes (RS1MSWFN-7, RS1MWF-7, RS1010FL_R1_00001, RS1ML, RS1MWF-HF) do not specify automotive-grade qualification. For automotive applications, prioritize AEC-Q101 qualified parts.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts maintain the same operating temperature range as the original RS1MSWF-7: -55°C to 150°C junction temperature. This ensures thermal compatibility across all substitution options.

Q: How do I select between multiple substitute options?

A: Selection criteria include: (1) Product Status—prioritize Active parts over Obsolete; (2) Manufacturer—consider supply chain relationships and qualification history; (3) Inventory—higher availability reduces procurement risk; (4) Compliance—verify REACH and automotive-grade requirements for your application; (5) Packaging—select Tape & Reel for automated assembly or standard packaging for manual processes.

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