Equivalent & Substitute Parts for S2AH (Taiwan Semiconductor Corporation)

Part Overview

The S2AH is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation. It is designed for automotive-grade applications, featuring a 50 V maximum DC reverse voltage and an average rectified current of 2A in a surface-mount DO-214AA (SMB) package. The device has an active product status, meets the ROHS3 and AEC-Q101 qualifications, and is suitable for applications requiring standard recovery time and reliability under broad operating temperatures. Identifying alternative models is necessary for supply continuity, lifecycle risk mitigation, and BOM flexibility when managing inventory or discontinued products.

Substiute Parts

S2AH

Taiwan Semiconductor CorporationIn Stock: 874S2AH Datasheet

Current PartRFQ

S2A R5G

Taiwan Semiconductor CorporationIn Stock: 1057S2A R5G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution among diodes and rectifiers in the DO-214AA (SMB) package is strictly governed by the following electrical and mechanical parameters: maximum DC reverse voltage (Vr), average rectified current (Io), maximum forward voltage (Vf) at specified current, reverse recovery time (trr), reverse leakage current, capacitance, junction temperature range, mounting type, package outline, compliance status, and applicable automotive qualification. Only parts matching these criteria can be considered parametric equivalents and direct substitutes. The substitute S2A R5G satisfies all the specified parameters for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

Selection between S2AH and S2A R5G should be based on product status and compliance certifications as supplied. Both models are ROHS3 compliant, REACH unaffected, and have the same AEC-Q101 qualification. Lifecycle status should be accounted for: S2AH is active, while S2A R5G is discontinued at Digi-Key. Inventory levels and supply chain continuity should drive the final selection within these equivalency parameters.

Frequently Asked Questions (FAQ)

Q1: What are the main substitution criteria for S2AH?
A: Substitution must strictly match maximum reverse voltage rating, average rectified current, forward voltage at operating current, reverse recovery time, leakage current, capacitance, mounting type, package case, operating temperature range, compliance, and qualification.

Q2: Is the DO-214AA (SMB) package required for direct replacement?
A: Yes. Mechanical compatibility and footprint interchangeability require retention of the DO-214AA (SMB) package.

Q3: Are compliance certifications such as ROHS3 and AEC-Q101 mandatory for substitutes?
A: Yes. Substitutes must maintain equivalent ROHS3 and AEC-Q101 automotive grade certifications for compatibility in regulated applications.

Q4: How does product status affect part selection?
A: Only parts with an active product status or available inventory should be selected to assure continuity and long-term availability. Discontinued models should be considered only when immediate sourcing is necessary.

Q5: Why is reverse recovery time and leakage current critical for the substitute decision?
A: These parameters affect switching performance and system reliability. Substitutes must match or exceed the original part's specified values.

Q6: Can the S2A R5G part be used as a drop-in replacement for S2AH?
A: Based strictly on the provided parameters and certifications, S2A R5G is a parametric equivalent and is a direct substitute for S2AH in applicable design contexts.