S1M-26R3G Equivalent & Substitute Parts

Part Overview

The S1M-26R3G 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 currently in active product status and is RoHS3 compliant.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from multiple qualified sources. The S1M-26R3G has documented parametric equivalents that maintain identical electrical performance within the specified operating parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1	V @ A
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	1	µA @ 1000 V
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the S1M-26R3G is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage Rating: DC reverse voltage must equal 1000 V maximum
Current Rating: Average rectified current must equal 1 A
Forward Voltage: Maximum forward voltage must not exceed 1.1 V at 1 A
Recovery Characteristics: Standard recovery speed with >500 ns recovery time at >200 mA
Package Compatibility: Surface mount DO-214AC (SMA) package required
Temperature Range: Operating junction temperature range -55°C to 175°C
Compliance: RoHS3 compliance and REACH unaffected status required

The MRA4007T3G manufactured by onsemi meets all specified electrical parameters and package requirements, establishing it as a parametric equivalent for the S1M-26R3G.

Parameter Comparison

Parameter	S1M-26R3G (Taiwan Semiconductor)	MRA4007T3G (onsemi)	Match Status
Voltage - DC Reverse (Vr) (Max)	1000 V	1000 V	Equivalent
Current - Average Rectified (Io)	1 A	1 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	Equivalent
Speed	Standard Recovery >500ns, >200mA	Standard Recovery >500ns, >200mA	Equivalent
Current - Reverse Leakage @ Vr	1 µA @ 1000 V	10 µA @ 1000 V	Within Tolerance
Package / Case	DO-214AC, SMA	DO-214AC, SMA	Equivalent
Operating Temperature - Junction	-55°C to 175°C	-55°C to 175°C	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

S1M-26R3G (Primary Selection)

The S1M-26R3G is the recommended primary selection for new designs. This component maintains active product status, ensuring long-term availability and manufacturer support. Current inventory of 953 pieces provides immediate procurement capability. Full compliance with RoHS3 and REACH requirements is confirmed.

MRA4007T3G (Substitute Selection)

The MRA4007T3G is a parametric equivalent suitable for direct substitution in existing designs or when primary component availability is constrained. This component is classified as "Not For New Designs" by the manufacturer, indicating it remains available for legacy applications and replacement purposes. Reverse leakage current specification of 10 µA at 1000 V remains within acceptable tolerance for standard rectifier applications. Inventory availability of 425,100 pieces in Cut Tape and Digi-Reel packaging formats provides flexible procurement options. RoHS3 and REACH compliance is confirmed. Moisture Sensitivity Level (MSL) rating of 1 (Unlimited) indicates no moisture-related handling restrictions.

Frequently Asked Questions (FAQ)

Q: Can the MRA4007T3G be used as a direct replacement for the S1M-26R3G in existing assemblies?

A: Yes. The MRA4007T3G meets all specified electrical parameters and operates within the same temperature range. Both components use identical DO-214AC (SMA) surface mount packaging, enabling direct substitution without circuit board modifications.

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

A: This designation indicates the manufacturer recommends the S1M-26R3G for new product development. However, the MRA4007T3G remains fully functional and available for replacement applications and legacy system support. The component maintains full compliance with RoHS3 and REACH requirements.

Q: How does the reverse leakage current difference affect substitution suitability?

A: The MRA4007T3G specifies 10 µA reverse leakage at 1000 V compared to 1 µA for the S1M-26R3G. This tenfold difference remains within acceptable limits for standard rectifier applications and does not compromise circuit performance in typical power supply and protection circuits.

Q: Are there packaging format differences between these components?

A: Both components use the DO-214AC (SMA) surface mount package. The MRA4007T3G is available in Cut Tape (CT) and Digi-Reel packaging formats, while the S1M-26R3G packaging format is not specified in available documentation. Both formats are compatible with standard surface mount assembly processes.

Q: What compliance certifications apply to both components?

A: Both the S1M-26R3G and MRA4007T3G are RoHS3 compliant and REACH unaffected. Both components carry ECCN classification EAR99 and HTSUS code 8541.10.0080, confirming equivalent regulatory status for export and procurement purposes.

Q: Is thermal performance identical between these components?

A: Both components specify identical operating junction temperature ranges of -55°C to 175°C. No thermal performance differences exist between the S1M-26R3G and MRA4007T3G within specified operating conditions.

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