GS1A Equivalent & Substitute Parts Reference

Part Overview

The GS1A is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 50 V DC reverse voltage and 1 A average rectified current in a surface mount SMA (DO-214AC) package. This component is classified as Active product status with standard recovery characteristics and is RoHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

GS1A

SMC Diode SolutionsIn Stock: 30233GS1A Datasheet

Current PartRFQ

S1A

YAGEOIn Stock: 4830S1A Datasheet

Parametric EquivalentRFQ

RS1A-13-F

Diodes IncorporatedIn Stock: 10435RS1A-13-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GS1A are classified based on strict electrical and mechanical parameter alignment. Substitution eligibility is determined by the following criteria:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 50 V
• Current - Average Rectified (Io): Must equal or exceed 1 A
• Package / Case: Must be DO-214AC or SMA equivalent
• Mounting Type: Must be Surface Mount
• RoHS Status: Must be ROHS3 Compliant
• Moisture Sensitivity Level: Must be MSL 1 or better

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) (Max) @ If: Tolerance within application circuit design limits
• Reverse Recovery Time (trr): May vary based on circuit speed requirements
• Current - Reverse Leakage @ Vr: Must not exceed specified maximum
• Capacitance @ Vr, F: Must be within acceptable range for circuit operation
• Operating Temperature - Junction: Must support application thermal requirements

The GS1A has two identified substitutes: the S1A (YAGEO) classified as a parametric equivalent, and the RS1A-13-F (Diodes Incorporated) classified as a similar substitute with performance variations in recovery speed characteristics.

Parameter Comparison

Engineering Selection Recommendations

S1A (YAGEO) - Parametric Equivalent: The S1A is classified as a parametric equivalent to the GS1A. Both components share identical voltage and current ratings (50 V, 1 A) and forward voltage characteristics (1.1 V @ 1 A). Both are RoHS3 compliant with MSL 1 rating. The S1A is available in Cut Tape (CT) & Digi-Reel® packaging, whereas the GS1A is supplied in Tape & Reel (TR). This substitute is suitable for applications where the primary electrical specifications are the determining factor and packaging format flexibility exists. Current inventory for S1A is 4,747 pieces.

RS1A-13-F (Diodes Incorporated) - Similar Substitute: The RS1A-13-F is classified as a similar substitute with notable performance differences. While matching the 50 V / 1 A core ratings and package type (DO-214AC, SMA), this component exhibits fast recovery characteristics (trr = 150 ns) compared to the GS1A's standard recovery (trr = 2.5 µs). The forward voltage is higher at 1.3 V @ 1 A versus 1.1 V. The operating temperature range is reduced to -65 to 150 °C compared to the GS1A's -65 to 175 °C. The RS1A-13-F is RoHS3 compliant and REACH unaffected. This substitute is applicable in circuits where faster switching performance is beneficial and the higher forward voltage drop is acceptable. Current inventory for RS1A-13-F is 10,400 pieces.

Compliance and Regulatory Status: All three components (GS1A, S1A, RS1A-13-F) are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating compatibility with standard manufacturing and storage conditions. The GS1A and RS1A-13-F are both ECCN EAR99 classified. The GS1A is REACH affected, while the RS1A-13-F is REACH unaffected. All components share the same HTSUS code (8541.10.0080).

Frequently Asked Questions (FAQ)

Q: Can the S1A replace the GS1A in any application? A: The S1A is a parametric equivalent with matching voltage (50 V), current (1 A), and forward voltage (1.1 V @ 1 A) specifications. Substitution is valid from an electrical standpoint. The primary difference is packaging format: S1A is supplied in Cut Tape (CT) & Digi-Reel® while GS1A is Tape & Reel (TR). Verify that your assembly equipment accommodates the packaging format before substitution.

Q: What are the key differences between the GS1A and RS1A-13-F? A: The RS1A-13-F has three notable differences: (1) faster reverse recovery time (150 ns versus 2.5 µs), making it suitable for higher-frequency switching applications; (2) higher forward voltage drop (1.3 V versus 1.1 V), which increases power dissipation; (3) lower maximum junction temperature rating (-65 to 150 °C versus -65 to 175 °C). Substitution is valid only if the circuit design accommodates these parameter variations.

Q: Are all three parts RoHS3 compliant? A: Yes. The GS1A, S1A, and RS1A-13-F are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. All three are suitable for applications requiring RoHS compliance.

Q: Which substitute should I select for high-temperature applications? A: The GS1A supports the highest operating temperature range (-65 to 175 °C). If your application requires operation above 150 °C, the GS1A is the only option among the three parts. The RS1A-13-F is limited to -65 to 150 °C.

Q: Does the faster recovery time of the RS1A-13-F affect circuit performance? A: The RS1A-13-F has a reverse recovery time of 150 ns compared to the GS1A's 2.5 µs. Faster recovery reduces switching losses and is beneficial in high-frequency rectification circuits. However, this characteristic may introduce different EMI behavior. Circuit-level evaluation is necessary to determine if this substitution improves or degrades overall system performance.

Q: What is the impact of the higher forward voltage in the RS1A-13-F? A: The RS1A-13-F forward voltage is 1.3 V @ 1 A versus the GS1A's 1.1 V @ 1 A. This 0.2 V difference results in increased power dissipation (P = Vf × I). In a 1 A circuit, this represents an additional 0.2 W of heat generation. Thermal design and power budget calculations must account for this difference.

Q: Can I mix different substitute parts in the same circuit board? A: All three parts (GS1A, S1A, RS1A-13-F) are mechanically compatible in the same DO-214AC / SMA footprint. However, mixing parts with different electrical characteristics (particularly the RS1A-13-F's higher forward voltage and faster recovery) in parallel or series configurations may result in unequal current distribution or voltage sharing. Identical part numbers are recommended for parallel or series applications.

Q: What inventory levels are available for each part? A: GS1A: 30,175 pieces; S1A: 4,747 pieces; RS1A-13-F: 10,400 pieces. Inventory levels should be verified at the time of procurement as availability is subject to change.