Equivalent & Substitute Parts for S6M General Purpose Rectifier Diode

Part Overview

The S6M is a general purpose rectifier diode manufactured by Semtech Corporation, rated for 600V DC reverse voltage and 2A average rectified current in a Surface Mount SMB (DO-214AA) package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain compatibility with the 600V voltage class and SMB package form factor while accommodating variations in current rating and thermal characteristics.

Substiute Parts

S6M

Semtech CorporationIn Stock: 937S6M Datasheet

Current PartRFQ

S2J-13-F

Diodes IncorporatedIn Stock: 46500S2J-13-F Datasheet

MFR RecommendedRFQ

S3JB-13-F

Diodes IncorporatedIn Stock: 78445S3JB-13-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S6M are selected based on strict electrical and mechanical compatibility criteria. All substitute candidates maintain the following mandatory parameters:

• Voltage Rating: 600V DC reverse voltage (equal to S6M specification)
• Package: DO-214AA SMB surface mount package (identical physical interface)
• Technology: Standard recovery diode classification
• Mounting: Surface mount configuration

Substitutes are grouped by current rating variation. The S6M baseline is 2A average rectified current. Substitute parts S2J-13-F (1.5A) and S3JB-13-F (3A) represent lower and higher current ratings respectively. Selection between these options depends on circuit current requirements and thermal design margins. All substitute parts are manufactured by Diodes Incorporated and carry active product status with current inventory availability.

Parameter Comparison

Engineering Selection Recommendations

S2J-13-F Selection Criteria: This substitute is appropriate for applications where the circuit current requirement does not exceed 1.5A average rectified current. The lower current rating reduces thermal dissipation and may improve reliability in thermally constrained designs. S2J-13-F is manufactured by Diodes Incorporated with active product status and ROHS3 compliance. Inventory availability is 46,450 pieces. The operating temperature range is -65°C to 150°C, which is 25°C lower than the S6M maximum junction temperature.

S3JB-13-F Selection Criteria: This substitute is appropriate for applications where the circuit current requirement exceeds 2A or where additional thermal margin is required. The 3A current rating provides headroom above the S6M baseline specification. S3JB-13-F is manufactured by Diodes Incorporated with active product status and ROHS3 compliance. Inventory availability is 78,400 pieces. The operating temperature range is -65°C to 150°C, matching S2J-13-F but 25°C lower than S6M.

Compliance Considerations: Both substitute parts carry ROHS3 compliance and REACH Unaffected status, meeting modern regulatory requirements. The S6M carries RoHS Compliant status. All three parts maintain MSL 1 (Unlimited) moisture sensitivity classification, indicating no special storage or handling requirements.

Temperature Derating: Applications operating near the upper temperature limit of 150°C should account for the reduced maximum junction temperature of substitute parts compared to the S6M specification of 175°C.

Frequently Asked Questions (FAQ)

Q: Can S2J-13-F be used as a direct replacement for S6M in all applications?

A: S2J-13-F is electrically compatible with S6M in applications where the average rectified current does not exceed 1.5A. The 600V voltage rating, SMB package, and standard recovery characteristics are identical. However, if the circuit requires 2A or higher current, S2J-13-F may operate outside design margins. Verify circuit current requirements before substitution.

Q: What is the difference between S2J-13-F and S3JB-13-F?

A: The primary difference is current rating. S2J-13-F is rated for 1.5A average rectified current, while S3JB-13-F is rated for 3A. Both maintain 600V voltage rating and SMB package compatibility. S3JB-13-F has higher reverse leakage current (10 µA versus 5 µA) and higher capacitance (40 pF versus 20 pF). Selection depends on circuit current requirements and thermal design.

Q: Are the substitute parts available in the same packaging options as S6M?

A: S2J-13-F is available in Cut Tape (CT) and Digi-Reel packaging. S3JB-13-F is available in Tape & Reel (TR) packaging. Both differ from the S6M original packaging specification. Verify packaging compatibility with assembly equipment and procurement processes before ordering.

Q: What is the impact of the lower maximum junction temperature on substitute parts?

A: S2J-13-F and S3JB-13-F are rated to -65°C to 150°C junction temperature, compared to S6M at -65°C to 175°C. This 25°C difference means substitute parts reach thermal limits sooner under high-temperature operation. Applications operating continuously above 150°C junction temperature should use S6M or verify that substitute parts remain within acceptable thermal margins through thermal analysis.

Q: Do the substitute parts have different forward voltage characteristics?

A: S2J-13-F and S3JB-13-F both specify 1.15V forward voltage at their respective rated currents (1.5A and 3A), compared to S6M at 1.1V @ 1A. Forward voltage varies with current and temperature. At equivalent current levels, forward voltage differences are within typical diode manufacturing tolerances and should not significantly impact circuit performance in most applications.

Q: Are all three parts RoHS compliant?

A: Yes. S6M carries RoHS Compliant status. S2J-13-F and S3JB-13-F carry ROHS3 Compliant status, which represents a more recent compliance standard. Both standards meet regulatory requirements for hazardous substance restrictions. All three parts carry MSL 1 (Unlimited) moisture sensitivity classification.