SBL1630 Equivalent & Substitute Parts

Part Overview

The SBL1630 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 30 V DC reverse voltage and 16 A average rectified current in a Through Hole TO-220AC package. This component is classified as Obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Active alternative components with compatible electrical and mechanical specifications are available from current manufacturers.

Substiute Parts

SBL1630

Diodes IncorporatedIn Stock: 1046SBL1630 Datasheet

Current PartRFQ

MBR1635G

onsemiIn Stock: 1464MBR1635G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SBL1630 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Voltage - DC Reverse (Vr) rating must equal or exceed 30 V
• Current - Average Rectified (Io) must equal or exceed 16 A
• Technology must be Schottky
• Speed classification must be Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Compatibility Requirements:

• Mounting Type: Through Hole
• Package / Case: TO-220-2 or equivalent TO-220AC configuration

Compliance Requirements:

• RoHS3 Compliant status
• Operating Temperature - Junction range must accommodate application requirements

The MBR1635G from onsemi meets all substitution criteria with enhanced voltage rating (35 V) and extended temperature range (-65°C ~ 175°C), while maintaining identical current rating, package configuration, and fast recovery speed classification.

Parameter Comparison

Engineering Selection Recommendations

The MBR1635G is the qualified substitute for the SBL1630 based on the following engineering criteria:

Electrical Equivalence: The MBR1635G maintains identical current rating (16 A) and fast recovery speed classification. The 35 V reverse voltage rating exceeds the 30 V requirement, providing design margin. Forward voltage at rated current increases from 570 mV to 630 mV, a 60 mV differential that must be evaluated within specific circuit thermal and efficiency constraints.

Mechanical Compatibility: Both components utilize identical TO-220-2 Through Hole packaging, ensuring direct mechanical substitution without PCB redesign or thermal management modifications.

Compliance Status: The MBR1635G is ROHS3 Compliant and carries Active product status, ensuring long-term availability and supply chain continuity. The SBL1630 Obsolete classification creates procurement risk and supply uncertainty.

Temperature Performance: The MBR1635G operating temperature range (-65°C ~ 175°C) extends beyond the SBL1630 specification (-65°C ~ 150°C), supporting applications requiring elevated junction temperature operation.

Reverse Leakage Characteristics: The MBR1635G exhibits lower reverse leakage current (200 µA @ 35 V) compared to the SBL1630 (1 mA @ 30 V), indicating improved device quality and reduced standby power dissipation.

Frequently Asked Questions (FAQ)

Q: Can the MBR1635G directly replace the SBL1630 without circuit modification?

A: Direct mechanical and electrical substitution is supported. The MBR1635G maintains identical current rating, package configuration, and fast recovery speed classification. Forward voltage increases by 60 mV at rated current; circuit thermal analysis must confirm acceptable power dissipation impact.

Q: What is the significance of the higher 35 V reverse voltage rating on the MBR1635G?

A: The 35 V rating provides 5 V design margin above the SBL1630 30 V specification. This margin improves reliability in applications with voltage transients or overshoot conditions. The substitute is suitable for any application rated at or below 30 V.

Q: Are the TO-220-2 and TO-220AC packages mechanically identical?

A: Both designations refer to the same Through Hole TO-220 package configuration with two leads. The packages are mechanically and thermally equivalent for PCB mounting and heatsink attachment.

Q: How does the forward voltage difference affect circuit performance?

A: The 60 mV increase in forward voltage (570 mV to 630 mV @ 16 A) results in proportionally higher power dissipation. At 16 A continuous current, this represents approximately 960 mW additional dissipation. Thermal management and efficiency calculations must incorporate this parameter.

Q: Is the MBR1635G suitable for high-temperature applications?

A: The MBR1635G supports junction temperatures to 175°C, exceeding the SBL1630 maximum of 150°C. Applications requiring operation above 150°C junction temperature benefit from this extended specification.

Q: What is the reverse leakage current significance?

A: The MBR1635G exhibits 200 µA leakage at 35 V compared to 1 mA at 30 V for the SBL1630. Lower leakage reduces standby power consumption and improves circuit efficiency in applications with extended idle periods.

Q: Are there alternative substitute parts beyond the MBR1635G?

A: The MBR1635G is the manufacturer-recommended substitute. Selection of alternative Schottky rectifiers requires verification of identical current rating (16 A), fast recovery speed classification, TO-220-2 package configuration, and ROHS3 compliance status.