S1DFSHMWG Equivalent & Substitute Parts

Part Overview

The S1DFSHMWG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-128 package. This component is classified as Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when alternative packaging formats are required.

Substiute Parts

S1DFSHMWG

Taiwan Semiconductor CorporationIn Stock: 1252S1DFSHMWG Datasheet

Current PartRFQ

S1DFS

Taiwan Semiconductor CorporationIn Stock: 29003S1DFS Datasheet

Parametric EquivalentRFQ

S1DFSH

Taiwan Semiconductor CorporationIn Stock: 29164S1DFSH Datasheet

Parametric EquivalentRFQ

RF201LAM2STR

Rohm SemiconductorIn Stock: 53538RF201LAM2STR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1DFSHMWG are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents (S1DFS, S1DFSH): These parts maintain identical electrical specifications across all critical parameters including reverse voltage (200 V), average rectified current (1 A), forward voltage drop (1.1 V @ 1 A), recovery speed characteristics, reverse leakage current (1 µA @ 200 V), and junction temperature range (-55°C to 150°C). Both parts are manufactured by Taiwan Semiconductor Corporation and packaged in SOD-128. The primary distinction is packaging format: S1DFS is supplied in Tape & Reel (TR) format, while S1DFSH is also supplied in Tape & Reel (TR) format. S1DFSH carries identical automotive grade and AEC-Q101 qualification as the main part.

Similar Part (RF201LAM2STR): This Rohm Semiconductor diode maintains the same 200 V reverse voltage rating and SOD-128 package footprint but differs in current rating (2 A versus 1 A), forward voltage drop (870 mV @ 2 A versus 1.1 V @ 1 A), recovery speed classification (Fast Recovery ≤500ns versus Standard Recovery >500ns), and reverse leakage current (10 µA @ 200 V versus 1 µA @ 200 V). This part is suitable for applications requiring higher current capacity within the same voltage class and package envelope.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Parametric Equivalents):

S1DFS and S1DFSH are direct parametric equivalents to S1DFSHMWG. Both maintain identical electrical performance across all specified parameters. S1DFSH is the preferred equivalent when automotive qualification and AEC-Q101 compliance are required, as it carries the same certifications as the main part. S1DFS is suitable for applications where automotive qualification is not a design requirement. The primary consideration between these equivalents is packaging format: S1DFSHMWG is supplied in Cut Tape (CT), while both S1DFS and S1DFSH are supplied in Tape & Reel (TR) format. This distinction affects procurement and assembly processes but does not impact electrical or mechanical compatibility.

For Higher Current Applications:

RF201LAM2STR from Rohm Semiconductor is classified as a similar part suitable for applications requiring increased current capacity. This part maintains the 200 V reverse voltage rating and SOD-128 package footprint but is rated for 2 A average rectified current compared to 1 A for the main part. The RF201LAM2STR exhibits lower forward voltage drop (870 mV @ 2 A) and faster recovery characteristics (Fast Recovery ≤500ns). This part is appropriate for designs where current requirements exceed 1 A within the same voltage class and package envelope. However, the higher reverse leakage current (10 µA @ 200 V versus 1 µA @ 200 V) and lack of specified automotive qualification should be evaluated against application requirements.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with standard manufacturing and storage protocols. Parts carrying AEC-Q101 qualification (S1DFSHMWG and S1DFSH) are suitable for automotive applications; S1DFS and RF201LAM2STR lack this certification and should be evaluated for non-automotive or non-critical applications.

Frequently Asked Questions (FAQ)

Q: Can S1DFS be used as a direct replacement for S1DFSHMWG?

A: S1DFS is a parametric equivalent with identical electrical specifications (200 V reverse voltage, 1 A current rating, 1.1 V forward voltage drop, and matching recovery characteristics). The primary difference is packaging format: S1DFSHMWG is supplied in Cut Tape (CT) while S1DFS is supplied in Tape & Reel (TR). Electrical and mechanical compatibility is confirmed. However, S1DFS does not carry AEC-Q101 automotive qualification; if automotive certification is required, use S1DFSH instead.

Q: What is the difference between S1DFSH and S1DFS?

A: Both S1DFSH and S1DFS are parametric equivalents with identical electrical specifications and SOD-128 package. The key distinction is that S1DFSH carries Automotive grade classification and AEC-Q101 qualification, matching the main part S1DFSHMWG. S1DFS does not include these certifications. For automotive applications, S1DFSH is the appropriate equivalent.

Q: Can RF201LAM2STR replace S1DFSHMWG in all applications?

A: RF201LAM2STR is a similar part with the same 200 V reverse voltage rating and SOD-128 package footprint but differs in current capacity (2 A versus 1 A), forward voltage drop (870 mV @ 2 A versus 1.1 V @ 1 A), and recovery speed (Fast Recovery versus Standard Recovery). This part is suitable for applications requiring higher current capacity within the same voltage class. However, the higher reverse leakage current and absence of AEC-Q101 qualification must be evaluated against specific application requirements. Direct substitution is not recommended without circuit analysis.

Q: Are all substitute parts available in the same package?

A: All substitute parts use the SOD-128 package, ensuring mechanical compatibility and identical PCB footprint. However, packaging formats differ: S1DFSHMWG is supplied in Cut Tape (CT), S1DFS and S1DFSH are supplied in Tape & Reel (TR), and RF201LAM2STR is supplied in Cut Tape (CT) & Digi-Reel®. These format differences affect procurement and assembly processes but do not impact electrical or mechanical compatibility.

Q: Which substitute part should be selected for automotive applications?

A: S1DFSH is the recommended substitute for automotive applications. It maintains identical electrical specifications to S1DFSHMWG and carries the same Automotive grade classification and AEC-Q101 qualification. S1DFS and RF201LAM2STR lack automotive certification and should not be used in automotive applications without explicit design review and approval.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by reverse voltage rating (200 V), average rectified current (1 A for direct equivalents), forward voltage drop (1.1 V @ 1 A for direct equivalents), recovery speed characteristics (Standard Recovery >500ns for direct equivalents), reverse leakage current (1 µA @ 200 V for direct equivalents), and operating temperature range (-55°C to 150°C). The SOD-128 package ensures mechanical compatibility. Automotive qualification (AEC-Q101) is required for automotive applications.

Q: Is there a difference in reverse leakage current between the main part and RF201LAM2STR?

A: Yes. S1DFSHMWG specifies 1 µA reverse leakage current at 200 V, while RF201LAM2STR specifies 10 µA at 200 V. This tenfold difference may impact circuit performance in applications sensitive to leakage current, such as high-impedance analog circuits or precision measurement applications. This parameter should be evaluated against specific circuit requirements before substitution.

Q: What is the significance of the recovery speed difference between S1DFSHMWG and RF201LAM2STR?

A: S1DFSHMWG is classified as Standard Recovery (>500ns) while RF201LAM2STR is classified as Fast Recovery (≤500ns). Recovery speed affects switching transients and electromagnetic interference characteristics. Fast recovery diodes are suitable for high-frequency switching applications and switching power supplies. Standard recovery diodes are appropriate for lower-frequency rectification applications. Selection depends on circuit operating frequency and EMI requirements.