Equivalent & Substitute Parts for S07M-M-18

Part Overview

The S07M-M-18 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 1000 V DC reverse voltage and 700 mA average rectified current in a surface mount DO-219AB (SMF) package. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the same application parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	700	mA
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Reverse Recovery Time (trr)	1.8	µs
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Package / Case	DO-219AB	SMF
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitute parts for the S07M-M-18 are categorized into two groups based on electrical and mechanical compatibility:

Group 1: Parametric Equivalents (Vishay S07 and S1F Series)

Parts S07M-GS18, S07M-M-08, S1FLM-GS08, S1FLM-GS18, and S1FLM-M-08 are direct parametric equivalents sharing identical electrical specifications: 1000 V reverse voltage, 700 mA average rectified current, 1.1 V forward voltage at 1 A, 1.8 µs reverse recovery time, and DO-219AB surface mount packaging. These parts maintain the same automotive grade and AEC-Q101 qualification. Substitution within this group is based on matching voltage rating, current rating, package type, and thermal operating range.

Group 2: Manufacturer-Recommended Alternatives (Higher Current Rating)

Parts CGRM4007-HF (Comchip Technology) and RS1MWF-7 (Diodes Incorporated) are manufacturer-recommended alternatives with elevated current ratings (1 A versus 700 mA) and different package configurations (SOD-123T and SOD-123F respectively). These parts maintain the 1000 V reverse voltage specification and automotive-grade compliance but introduce package and recovery time variations. Substitution to this group requires design verification for package footprint compatibility and thermal management differences.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): 1000 V
Current - Average Rectified (Io): 700 mA (Group 1) or 1 A (Group 2)
Package / Case: DO-219AB (Group 1) or SOD-123 variants (Group 2)
Operating Temperature Range: -55°C to 150°C
Automotive Grade and AEC-Q101 Qualification

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ 1A	trr	Package	Grade	AEC-Q101
S07M-M-18	Vishay	1000 V	700 mA	1.1 V	1.8 µs	DO-219AB	Automotive	Yes
S07M-GS18	Vishay	1000 V	700 mA	1.1 V	1.8 µs	DO-219AB	Automotive	Yes
S07M-M-08	Vishay	1000 V	700 mA	1.1 V	1.8 µs	DO-219AB	Automotive	Yes
S1FLM-GS08	Vishay	1000 V	700 mA	1.1 V	1.8 µs	DO-219AB	Automotive	Not specified
S1FLM-GS18	Vishay	1000 V	700 mA	1.1 V	1.8 µs	DO-219AB	Automotive	Not specified
S1FLM-M-08	Vishay	1000 V	700 mA	1.1 V	1.8 µs	DO-219AB	Automotive	Not specified
CGRM4007-HF	Comchip Technology	1000 V	1 A	1.1 V	Standard	SOD-123T	Automotive	Not specified
RS1MWF-7	Diodes Incorporated	1000 V	1 A	1.3 V	500 ns	SOD-123F	Automotive	Not specified

Engineering Selection Recommendations

Group 1 Substitutes (S07M-GS18, S07M-M-08, S1FLM-GS08, S1FLM-GS18, S1FLM-M-08):

These parts provide direct electrical and mechanical substitution for the S07M-M-18 with identical voltage, current, and package specifications. All maintain Active product status and ROHS3 compliance. Selection among Group 1 alternatives is based on inventory availability and supply chain requirements. Parts S07M-GS18 and S07M-M-08 retain explicit AEC-Q101 qualification matching the primary part. Parts within the S1F base product series maintain equivalent electrical performance and DO-219AB packaging but do not specify AEC-Q101 qualification in the provided data.

Group 2 Substitutes (CGRM4007-HF, RS1MWF-7):

These parts are suitable for applications where higher current capacity (1 A) is acceptable and package footprint changes are feasible. CGRM4007-HF maintains standard recovery characteristics in SOD-123T packaging. RS1MWF-7 features fast recovery (500 ns) in SOD-123F packaging with slightly elevated forward voltage (1.3 V at 1 A). Both parts maintain 1000 V reverse voltage rating and automotive-grade compliance. Selection of Group 2 alternatives requires confirmation that circuit board layout accommodates the different package geometry and that the higher current rating does not introduce thermal management complications.

Frequently Asked Questions (FAQ)

Q: Can S07M-GS18 directly replace S07M-M-18 without circuit modification?

A: Yes. S07M-GS18 is a parametric equivalent with identical voltage rating (1000 V), current rating (700 mA), forward voltage (1.1 V @ 1 A), reverse recovery time (1.8 µs), and DO-219AB package. Both parts maintain automotive grade and AEC-Q101 qualification. No circuit modification is required.

Q: What is the difference between S07M-M-08 and S07M-GS18?

A: Both parts share identical electrical specifications (1000 V, 700 mA, 1.1 V Vf, 1.8 µs trr) and DO-219AB packaging. The designation difference (M-08 versus GS18) reflects internal manufacturing or tape configuration variations. Electrical performance and mechanical compatibility are equivalent.

Q: Can RS1MWF-7 replace S07M-M-18 in the same circuit?

A: RS1MWF-7 is a manufacturer-recommended alternative with matching 1000 V reverse voltage and automotive-grade compliance. However, it differs in three aspects: (1) higher current rating (1 A versus 700 mA), (2) different package (SOD-123F versus DO-219AB), and (3) faster recovery time (500 ns versus 1.8 µs). Package footprint change requires PCB layout modification. The higher current rating and faster recovery may alter circuit behavior in applications sensitive to switching characteristics.

Q: Are S1FLM series parts (S1FLM-GS08, S1FLM-GS18, S1FLM-M-08) equivalent to S07M series?

A: S1FLM series parts match all electrical specifications of S07M series (1000 V, 700 mA, 1.1 V Vf, 1.8 µs trr) and use identical DO-219AB packaging. The base product number difference (S1F versus S07) indicates different product lines within Vishay. Electrical and mechanical compatibility is confirmed. AEC-Q101 qualification is not specified for S1FLM parts in the provided data.

Q: What is the primary reason to substitute from S07M-M-18 to CGRM4007-HF?

A: CGRM4007-HF is selected when higher current capacity (1 A versus 700 mA) is required within the same 1000 V voltage class. The SOD-123T package is smaller than DO-219AB, which may provide PCB space advantages. This substitution requires verification that the application can accommodate the different package footprint and that the standard recovery characteristic is acceptable for the circuit timing requirements.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All substitute parts listed (S07M-GS18, S07M-M-08, S1FLM-GS08, S1FLM-GS18, S1FLM-M-08, CGRM4007-HF, RS1MWF-7) are specified as ROHS3 compliant. All parts also maintain REACH Unaffected status and EAR99 export classification.

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

A: All substitute parts maintain the same operating temperature range as S07M-M-18: -55°C to 150°C junction temperature. This specification is consistent across all Group 1 and Group 2 alternatives.

Q: Can multiple substitute parts be used interchangeably on the same PCB assembly?

A: Group 1 parts (S07M-GS18, S07M-M-08, S1FLM-GS08, S1FLM-GS18, S1FLM-M-08) are interchangeable due to identical package and electrical specifications. Group 2 parts (CGRM4007-HF, RS1MWF-7) require different PCB footprints and cannot be used interchangeably with Group 1 or the primary part without layout redesign.

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