S1MR3 Equivalent & Substitute Parts

Part Overview

The S1MR3 is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active and suitable for new designs. Substitute parts are identified based on matching electrical specifications and package compatibility to support procurement flexibility, inventory optimization, and supply chain continuity.

Substiute Parts

S1MR3

Taiwan Semiconductor CorporationIn Stock: 986S1MR3 Datasheet

Current PartRFQ

GS1M_R1_00001

Panjit International Inc.In Stock: 17704GS1M_R1_00001 Datasheet

SimilarRFQ

MRA4007T3G

onsemiIn Stock: 425144MRA4007T3G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1MR3 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 1000 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Technology: Standard

Acceptable Variation Parameters:

• Operating Temperature - Junction: Minimum -55°C required; maximum may vary within design margins
• Current - Reverse Leakage @ Vr: Specified at 1000 V; higher values remain within acceptable limits for general-purpose applications
• Reverse Recovery Time (trr): Standard recovery classification applies
• Capacitance @ Vr, F: Specified at 12 pF; absence of specification does not disqualify substitution

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Parameter Comparison

Engineering Selection Recommendations

GS1M_R1_00001 (Panjit International Inc.)

This substitute is electrically and mechanically equivalent to the S1MR3 across all critical parameters. Both components are classified as Active and suitable for new designs. The GS1M_R1_00001 operates within a maximum junction temperature of 150°C, compared to 175°C for the S1MR3; this represents a 25°C reduction in upper operating range. For applications operating within -55°C to 150°C, this part provides direct substitution. Both parts carry identical RoHS3 compliance and MSL ratings. Packaging is specified as Tape & Reel (TR) for the GS1M_R1_00001, compared to unspecified packaging for the S1MR3.

MRA4007T3G (onsemi)

This substitute meets all critical electrical specifications and package requirements. The MRA4007T3G is classified as Not For New Designs, indicating it is available for existing production but not recommended for new circuit development. The reverse leakage current is specified at 10 µA @ 1000 V, compared to 1 µA for the S1MR3, representing a tenfold increase. Capacitance is not specified for this part. The operating temperature range matches the S1MR3 at -55°C to 175°C. RoHS3 compliance and MSL ratings are identical. This part is suitable for replacement in existing designs or where higher reverse leakage is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the GS1M_R1_00001 be used in applications requiring operation above 150°C?

A: No. The GS1M_R1_00001 is rated for a maximum junction temperature of 150°C, while the S1MR3 is rated to 175°C. Applications requiring sustained operation above 150°C must use the S1MR3 or MRA4007T3G.

Q: What is the significance of the MRA4007T3G "Not For New Designs" status?

A: This designation indicates the part is in mature or declining production phase. It remains available for replacement and maintenance of existing products but should not be selected for new circuit designs. The S1MR3 or GS1M_R1_00001 are preferred for new applications.

Q: Are there differences in reverse leakage current between the substitutes?

A: Yes. The S1MR3 and GS1M_R1_00001 specify 1 µA @ 1000 V reverse leakage, while the MRA4007T3G specifies 10 µA @ 1000 V. Applications sensitive to leakage current should use the S1MR3 or GS1M_R1_00001.

Q: Do all three parts use the same package?

A: Yes. All three parts use the DO-214AC (SMA) surface mount package. Mechanical compatibility is confirmed across all substitutes.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) is supplied on continuous tape wound on a reel for automated assembly. Cut Tape (CT) is supplied as individual segments cut from the tape. Both formats are compatible with standard pick-and-place equipment; selection depends on production volume and assembly line configuration.

Q: Are all substitutes RoHS3 compliant?

A: Yes. The S1MR3, GS1M_R1_00001, and MRA4007T3G are all ROHS3 Compliant with MSL rating of 1 (Unlimited), confirming suitability for lead-free assembly processes.

Q: Can the MRA4007T3G be used as a direct replacement for the S1MR3 in existing designs?

A: The MRA4007T3G meets all critical electrical and mechanical specifications. However, the higher reverse leakage current (10 µA vs. 1 µA) and unspecified capacitance should be evaluated against circuit requirements. The "Not For New Designs" status indicates this part is in end-of-life phase and may face future availability constraints.