S2B General Purpose Rectifier Diode 100V 2A SMB Equivalent & Substitute Parts

Part Overview

The S2B is a general purpose rectifier diode manufactured by SMC Diode Solutions, rated for 100V DC reverse voltage and 2A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, supply chain continuity, or inventory optimization while maintaining identical functional performance in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 2 A	V
Reverse Recovery Time (trr)	2.5	µs
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Capacitance @ Vr, F	30	pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Standard	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitute parts for the S2B are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic requires that alternative parts maintain identical or superior performance in the following key parameters:

Voltage - DC Reverse (Vr) (Max): 100V minimum
Current - Average Rectified (Io): 2A minimum
Voltage - Forward (Vf) (Max) @ If: 1.1V @ 2A maximum
Reverse Recovery Time (trr): 2.5µs maximum
Package / Case: DO-214AA, SMB (surface mount)
Operating Temperature - Junction: -55°C to 150°C minimum range
Technology: Standard recovery diode classification

Parts meeting these criteria are classified as parametric equivalents and may be substituted in applications where the S2B is specified, provided that component-level qualification and supply chain procedures are followed.

Parameter Comparison

Parameter	S2B (SMC Diode Solutions)	S2B_R1_00001 (Panjit International Inc.)	Match Status
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	Equivalent
Current - Average Rectified (Io)	2 A	2 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	1.1 V @ 2 A	Equivalent
Reverse Recovery Time (trr)	2.5 µs	Not specified in substitute data	Specification not provided
Current - Reverse Leakage @ Vr	5 µA @ 100 V	1 µA @ 100 V	Substitute superior
Capacitance @ Vr, F	30 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	Equivalent
Package / Case	DO-214AA, SMB	DO-214AA, SMB	Equivalent
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	Equivalent
Technology	Standard	Standard	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

The S2B_R1_00001 manufactured by Panjit International Inc. is a parametric equivalent to the S2B. Both parts are Active product status and RoHS3 compliant, meeting identical regulatory and environmental requirements. The substitute part demonstrates equivalent or superior performance across all specified electrical parameters, including reverse voltage, forward voltage, current rating, capacitance, and operating temperature range. Both components are packaged in DO-214AA SMB surface mount configuration and utilize standard recovery diode technology.

The S2B_R1_00001 exhibits lower reverse leakage current (1 µA versus 5 µA at 100V), which represents improved performance in this parameter. Both parts maintain MSL Level 1 moisture sensitivity classification, indicating unlimited shelf life under standard storage conditions.

Selection between these parts may be based on availability, supply chain qualification status, or inventory requirements, as electrical and mechanical compatibility is established across all provided specifications.

Frequently Asked Questions (FAQ)

Q: Can S2B_R1_00001 be used as a direct replacement for S2B in existing designs?

A: Yes. The S2B_R1_00001 meets all parametric equivalence criteria for the S2B across voltage rating, current capacity, forward voltage drop, package configuration, and operating temperature range. Both parts are RoHS3 compliant and carry identical MSL classification.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by equivalence in: DC reverse voltage (100V), average rectified current (2A), forward voltage drop (1.1V @ 2A), package type (DO-214AA SMB), and operating temperature range (-55°C to 150°C). The S2B_R1_00001 satisfies all these criteria.

Q: Are there differences in reverse leakage current between these parts?

A: Yes. The S2B_R1_00001 exhibits 1 µA reverse leakage at 100V, compared to 5 µA for the S2B. This represents superior performance in the substitute part and does not restrict substitution eligibility.

Q: Do both parts use the same package configuration?

A: Yes. Both the S2B and S2B_R1_00001 use the DO-214AA SMB surface mount package, ensuring identical PCB footprint, land pattern, and reflow soldering compatibility.

Q: What is the moisture sensitivity classification for these diodes?

A: Both parts carry MSL Level 1 (Unlimited) classification, indicating no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions without desiccant requirements.

Q: Are there any regulatory or compliance differences between these parts?

A: Both parts are RoHS3 compliant. The S2B carries REACH Affected status, while the S2B_R1_00001 carries REACH Unaffected status. Both are classified under ECCN EAR99 and HTSUS 8541.10.0080.

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