SD860-B Equivalent & Substitute Parts

Part Overview

The SD860-B is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 60V DC reverse voltage and 8A average rectified current in a DO-201AD through-hole axial package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The fast recovery characteristic (≤500ns at >200mA) and low forward voltage drop (700mV @ 8A) define its primary application profile in rectification circuits requiring efficient power conversion.

Substiute Parts

SD860-B

Diodes IncorporatedIn Stock: 1025SD860-B Datasheet

Current PartRFQ

SB360E-G

Comchip TechnologyIn Stock: 1617SB360E-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD860-B is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 60V minimum
• Package / Case: DO-201AD, Axial (physical and electrical compatibility)
• Mounting Type: Through Hole
• Technology: Schottky (fast recovery rectifier characteristics)
• Operating Temperature Range: -65°C to 150°C minimum

Current Rating Consideration: The SD860-B is rated for 8A average rectified current. Substitute parts with lower current ratings (such as 3A) operate within the same voltage class and package but with reduced current capacity. Such substitutes are applicable only in circuits where the actual operating current does not exceed the substitute part's rating.

Forward Voltage and Leakage: Forward voltage drop and reverse leakage current are secondary parameters that influence efficiency and heat dissipation but do not prevent substitution when primary electrical and mechanical parameters align.

The identified substitute SB360E-G meets the mandatory voltage, package, and technology requirements but carries a reduced current rating of 3A versus the original 8A specification.

Parameter Comparison

Engineering Selection Recommendations

SB360E-G Substitution Criteria:

The SB360E-G is an active product from Comchip Technology and represents a viable substitute for the obsolete SD860-B when circuit design permits operation at the reduced 3A current rating. Both components share identical voltage ratings (60V), package geometry (DO-201AD axial), mounting method (through-hole), and operating temperature range (-65°C to 150°C). Both are Schottky technology devices with fast recovery characteristics and ROHS3 compliance.

The primary design constraint is current capacity. The SB360E-G is rated for 3A average rectified current compared to the SD860-B's 8A rating. Substitution is valid only when the actual circuit current demand does not exceed 3A. The SB360E-G exhibits lower reverse leakage current (500µA versus 1mA at 60V), which may provide improved efficiency in low-current standby conditions.

Both parts maintain identical forward voltage characteristics (700mV) at their respective current ratings, ensuring consistent rectification performance within their operational envelopes. The ROHS3 compliance of both components supports regulatory continuity for applications subject to environmental restrictions.

Frequently Asked Questions (FAQ)

Q: Can the SB360E-G directly replace the SD860-B in all applications?

A: Direct replacement is valid only when the circuit's actual operating current does not exceed 3A. The SB360E-G is rated for 3A average rectified current, while the SD860-B is rated for 8A. If the design requires sustained current above 3A, the SB360E-G will not provide adequate current capacity and substitution is not appropriate.

Q: Are the DO-201AD packages physically identical between SD860-B and SB360E-G?

A: Yes. Both components use the DO-201AD axial through-hole package, ensuring identical physical dimensions, lead spacing, and PCB mounting compatibility. No layout modifications are required for package accommodation.

Q: What is the difference in reverse leakage current between these parts?

A: The SD860-B exhibits 1mA reverse leakage at 60V, while the SB360E-G exhibits 500µA at 60V. The SB360E-G's lower leakage current may reduce standby power consumption in circuits with sustained reverse bias conditions.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the SD860-B and SB360E-G are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. The SB360E-G is REACH Unaffected, while the SD860-B is REACH Affected; however, both support equivalent regulatory deployment in compliant applications.

Q: What is the forward voltage drop comparison at rated current?

A: Both parts specify 700mV forward voltage drop at their respective rated currents (SD860-B at 8A, SB360E-G at 3A). This identical specification ensures consistent rectification efficiency within each part's current operating range.

Q: Why is the SD860-B classified as obsolete?

A: The SD860-B is listed as obsolete by Diodes Incorporated. The SB360E-G is an active product from Comchip Technology and represents current manufacturing availability for equivalent voltage and package specifications, though with reduced current capacity.

Q: Can the SB360E-G handle transient current spikes above 3A?

A: Current ratings define sustained operating conditions. Transient behavior is not specified in the provided parameters and cannot be evaluated for substitution purposes based on available data.