SB5100-B Schottky Diode Equivalent & Substitute Parts

Part Overview

The SB5100-B is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 100V DC reverse voltage and 5A average rectified current in a DO-201AD axial through-hole package. This part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement. Substitute parts must maintain electrical performance within the specified parameter ranges while accommodating packaging and sourcing requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	800	mV @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500	µA @ 100 V
Mounting Type	Through Hole	—
Package / Case	DO-201AD, Axial	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitution of the obsolete SB5100-B is determined by equivalence in the following critical parameters: Voltage - DC Reverse (Vr) maximum of 100V, Current - Average Rectified (Io) of 5A, Schottky technology, DO-201AD axial through-hole package, and fast recovery speed characteristic. Substitute parts must maintain these core electrical and mechanical specifications to ensure functional compatibility in existing circuit designs.

The identified substitute parts are grouped into two categories:

Parametric Equivalents maintain all critical electrical parameters within the original specification range. These parts are direct functional replacements with identical or superior performance characteristics.

Manufacturer Recommended Equivalent provides functional compatibility with minor parameter variations that remain within acceptable operating ranges for the application category.

Parameter Comparison

Parameter	SB5100-B (Main)	SB5100-T	SBL5100	MBR5100_R2_00001
Manufacturer	Diodes Incorporated	Diodes Incorporated	SMC Diode Solutions	Panjit International Inc.
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	5 A	5 A	—	5 A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 5 A	800 mV @ 5 A	850 mV @ 5 A	800 mV @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 100 V	500 µA @ 100 V	500 µA @ 100 V	50 µA @ 100 V
Capacitance @ Vr, F	400 pF @ 4V, 1MHz	400 pF @ 4V, 1MHz	—	150 pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Operating Temperature - Junction	-65 to 150 °C	-65 to 150 °C	-55 to 150 °C	-65 to 150 °C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Type	—	Cut Tape (CT)	Cut Tape (CT)	Tape & Reel (TR)

Engineering Selection Recommendations

SB5100-T (Diodes Incorporated) is the primary substitute for the obsolete SB5100-B. This part is manufactured by the same original equipment manufacturer and maintains identical electrical specifications across all critical parameters. The SB5100-T is active in production status and ROHS3 compliant. Packaging is supplied in Cut Tape format. This substitute provides direct functional equivalence with no parameter deviations.

MBR5100_R2_00001 (Panjit International Inc.) is a parametric equivalent offering superior performance in reverse leakage current (50 µA versus 500 µA) and lower junction capacitance (150 pF versus 400 pF). This part maintains all core electrical specifications and is active in production. Packaging is supplied in Tape & Reel format. The improved leakage and capacitance characteristics may provide benefits in specific circuit applications.

SBL5100 (SMC Diode Solutions) is a manufacturer-recommended equivalent with active production status. This part maintains the 100V reverse voltage rating and fast recovery speed. Forward voltage is specified at 850 mV at 5A, representing a 50 mV increase over the original specification. Operating temperature range is -55 to 150°C, providing a reduced low-temperature specification of 10°C above the original. Current - Average Rectified (Io) is not specified for this part. Packaging is supplied in Cut Tape format.

All substitute parts are ROHS3 compliant and carry MSL rating of 1 (Unlimited), matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can SB5100-T be used as a direct replacement for SB5100-B in existing designs?

A: Yes. SB5100-T maintains identical electrical specifications for voltage rating, current rating, forward voltage, reverse leakage, and capacitance. Both parts use the DO-201AD axial through-hole package. The primary difference is product status (active versus obsolete) and packaging format (Cut Tape versus unspecified). No circuit modifications are required.

Q: What is the difference between the three substitute parts?

A: SB5100-T and MBR5100_R2_00001 are parametric equivalents with identical core specifications. MBR5100_R2_00001 offers lower reverse leakage current (50 µA versus 500 µA) and lower junction capacitance (150 pF versus 400 pF). SBL5100 is a manufacturer-recommended equivalent with a 50 mV higher forward voltage specification and a 10°C higher minimum operating temperature. All three parts maintain the 100V/5A rating and fast recovery speed.

Q: Does packaging format affect electrical performance?

A: Packaging format (Cut Tape, Tape & Reel, or bulk) does not affect electrical performance. Packaging selection is determined by procurement volume, handling requirements, and assembly process compatibility. All substitute parts are available in standard packaging formats suitable for through-hole assembly.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts carry ROHS3 compliance certification, matching the original SB5100-B specification. All parts also carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: Which substitute part should be selected for new designs?

A: SB5100-T is the recommended selection for new designs, as it is manufactured by the original equipment manufacturer (Diodes Incorporated) and maintains complete electrical equivalence to the original part. MBR5100_R2_00001 is suitable for applications where lower reverse leakage or reduced junction capacitance provides circuit benefits. SBL5100 is suitable for applications where the 50 mV forward voltage increase and reduced low-temperature range are acceptable.

Q: What is the significance of the -55°C minimum operating temperature for SBL5100?

A: SBL5100 specifies a minimum operating temperature of -55°C, compared to -65°C for the original SB5100-B and other substitutes. This 10°C difference may be significant in applications requiring operation at temperatures below -55°C. Verify application temperature requirements before selecting this part.

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