FR1B Equivalent & Substitute Parts

Part Overview

The FR1B is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 100V DC reverse voltage and 1A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and inventory optimization while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

FR1B

SMC Diode SolutionsIn Stock: 1165FR1B Datasheet

Current PartRFQ

FR1B_R1_00001

Panjit International Inc.In Stock: 1702FR1B_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FR1B are identified based on strict parametric equivalence across electrical and mechanical specifications. The substitution logic is based on the following key parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 100 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
• Reverse Recovery Time (trr): 150 ns
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Equivalence Criteria:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Supplier Device Package: SMB (DO-214AA)

Environmental & Compliance Criteria:

• Operating Temperature - Junction: -50°C to 150°C
• RoHS Status: ROHS3 Compliant
• Technology: Standard

Parts meeting all specified parameters are classified as parametric equivalents and direct substitutes. Variations in secondary parameters (such as reverse leakage current or capacitance) that remain within acceptable engineering tolerances do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

Both the FR1B (SMC Diode Solutions) and FR1B_R1_00001 (Panjit International Inc.) are Active product status components with ROHS3 compliance and identical core electrical and mechanical specifications. Selection between these parts is based on the following factors:

Primary Selection Criteria:

• Both parts meet all mandatory electrical parameters: 100V reverse voltage, 1A average rectified current, 1.3V forward voltage, and 150ns reverse recovery time
• Both parts are packaged in DO-214AA SMB surface mount configuration with identical mounting requirements
• Both parts operate across the full -50°C to 150°C junction temperature range
• Both parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating

Secondary Differentiation:

• FR1B_R1_00001 exhibits lower reverse leakage current (1 µA vs. 5 µA @ 100V), indicating potentially superior blocking characteristics
• FR1B_R1_00001 has marginally higher capacitance (12 pF vs. 10 pF @ 4V, 1MHz)
• FR1B_R1_00001 carries REACH Unaffected status, while FR1B is REACH Affected

Compliance Considerations:

• Both parts are classified under ECCN EAR99 and HTSUS 8541.10.0080
• Both parts maintain Active product status with ongoing manufacturer support

Selection between these parts is determined by supply availability, inventory levels, and specific application requirements regarding reverse leakage performance or REACH compliance status.

Frequently Asked Questions (FAQ)

Q: Can FR1B_R1_00001 be used as a direct replacement for FR1B in existing designs?

A: Yes. FR1B_R1_00001 meets all electrical and mechanical specifications of the FR1B. Both parts share identical voltage ratings (100V), current ratings (1A), forward voltage characteristics (1.3V @ 1A), reverse recovery time (150ns), package type (DO-214AA SMB), and operating temperature range (-50°C to 150°C). Direct substitution is supported without circuit redesign.

Q: What are the differences between FR1B and FR1B_R1_00001?

A: The primary differences are: (1) Reverse leakage current: FR1B_R1_00001 exhibits 1 µA @ 100V compared to FR1B at 5 µA @ 100V, indicating lower leakage; (2) Capacitance: FR1B_R1_00001 is rated at 12 pF @ 4V, 1MHz versus FR1B at 10 pF @ 4V, 1MHz; (3) REACH status: FR1B_R1_00001 is REACH Unaffected while FR1B is REACH Affected. All other electrical and mechanical parameters are identical.

Q: Are both parts suitable for high-frequency switching applications?

A: Both parts are classified as Fast Recovery diodes with reverse recovery time of 150 ns and speed rating of ≤ 500ns for currents > 200mA (Io). This classification supports high-frequency switching applications within the specified current and voltage parameters.

Q: What is the significance of the DO-214AA SMB package for these parts?

A: The DO-214AA SMB package is a standardized surface mount package for rectifier diodes. Both FR1B and FR1B_R1_00001 use this identical package, ensuring mechanical and thermal compatibility on PCBs designed for SMB-packaged diodes. No footprint or mounting modifications are required when substituting between these parts.

Q: Are there any temperature-related limitations when substituting these parts?

A: No. Both parts operate across the identical junction temperature range of -50°C to 150°C. Thermal performance and temperature derating curves should be evaluated based on specific application thermal management, but no temperature-related substitution restrictions exist between these parts.

Q: What does ROHS3 compliance mean for these parts?

A: ROHS3 compliance indicates that both FR1B and FR1B_R1_00001 conform to the Restriction of Hazardous Substances Directive 3, restricting the use of specific hazardous materials including lead, cadmium, mercury, and certain flame retardants. Both parts are suitable for applications requiring ROHS3-compliant components.

Q: How does reverse leakage current affect circuit performance?

A: Reverse leakage current represents the small current flowing through the diode in the reverse-biased state. FR1B_R1_00001 at 1 µA @ 100V exhibits lower leakage than FR1B at 5 µA @ 100V. In applications sensitive to leakage current (such as precision analog circuits or high-impedance circuits), the lower leakage of FR1B_R1_00001 may provide performance advantages. For standard rectification applications, both leakage levels are acceptable.

Q: What is the MSL 1 (Unlimited) moisture sensitivity rating?

A: MSL 1 (Unlimited) indicates the lowest moisture sensitivity level. These parts do not require special moisture control during storage, handling, or assembly. Standard storage conditions are sufficient, and no baking or desiccant packaging is required prior to soldering.