FS1G-TP Equivalent & Substitute Parts

Part Overview

The FS1G-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (HSMA) package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and availability constraints.

Substiute Parts

FS1G-TP

Micro Commercial CoIn Stock: 1007FS1G-TP Datasheet

Current PartRFQ

FS1G-LTP

Micro Commercial CoIn Stock: 8702FS1G-LTP Datasheet

DirectRFQ

S1GH

Taiwan Semiconductor CorporationIn Stock: 16022S1GH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FS1G-TP is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 400 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Package / Case: DO-214AC, SMA form factor
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Performance Considerations:

• Reverse Recovery Time (trr): Fast Recovery ≤ 500 ns or Standard Recovery > 500 ns
• Current - Reverse Leakage @ Vr: 1 µA to 5 µA @ 400 V
• Operating Temperature - Junction: -50°C to 150°C minimum range
• Capacitance @ Vr, F: 12 pF to 50 pF @ 4V, 1MHz

Substitute parts meeting all mandatory criteria are classified as direct equivalents. Parts with differing recovery speed characteristics or extended temperature ranges are classified as similar substitutes with noted performance variations.

Parameter Comparison

Engineering Selection Recommendations

FS1G-LTP (Direct Equivalent - Recommended Primary Substitute)

The FS1G-LTP is the direct equivalent substitute for the obsolete FS1G-TP. Both parts are manufactured by Micro Commercial Co and share identical electrical specifications: 400 V reverse voltage, 1 A average rectified current, 150 ns reverse recovery time, and -50°C to 150°C operating temperature range. The FS1G-LTP is currently in active production status with 8600 units in stock. The primary difference is packaging format: FS1G-LTP is supplied in Tape & Reel (TR) configuration versus the main part's unspecified packaging. Both maintain ROHS3 compliance and MSL 1 rating. The FS1G-LTP is suitable for direct board-level substitution without design modification.

S1GH (Similar Substitute - Alternative Option)

The S1GH, manufactured by Taiwan Semiconductor Corporation, meets all mandatory electrical and mechanical compatibility criteria: 400 V reverse voltage, 1 A average rectified current, DO-214AC SMA package, and surface mount configuration. The S1GH is actively produced with 15983 units in stock and carries automotive-grade qualification (AEC-Q101) with extended operating temperature range (-55°C to 175°C). Performance differences include standard recovery speed (1.5 µs versus 150 ns fast recovery), lower forward voltage (1.1 V versus 1.3 V), lower reverse leakage (1 µA versus 5 µA), and reduced capacitance (12 pF versus 50 pF). These characteristics make the S1GH suitable for applications where slower switching speed is acceptable and lower leakage current is beneficial. The S1GH is supplied in Tape & Reel packaging.

Selection Criteria:

For applications requiring fast recovery diode performance matching the original FS1G-TP specifications, select FS1G-LTP. For applications where standard recovery speed is acceptable and automotive qualification is required, select S1GH. Both substitutes maintain full RoHS3 compliance and unlimited moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can FS1G-LTP be used as a direct replacement for FS1G-TP without circuit modification?

A: Yes. The FS1G-LTP is electrically and mechanically equivalent to the FS1G-TP. Both parts share identical voltage ratings (400 V), current ratings (1 A), reverse recovery time (150 ns), and operating temperature range (-50°C to 150°C). The only difference is packaging format (Tape & Reel versus unspecified). No circuit modification is required.

Q: What is the primary difference between FS1G-LTP and S1GH?

A: The primary difference is recovery speed classification. FS1G-LTP is a fast recovery diode (150 ns), while S1GH is a standard recovery diode (1.5 µs). Additionally, S1GH carries automotive-grade qualification (AEC-Q101) and has extended temperature range (-55°C to 175°C). Both meet the 400 V / 1 A electrical requirements and DO-214AC package specification.

Q: Is S1GH suitable for high-frequency switching applications?

A: S1GH is classified as a standard recovery diode with 1.5 µs reverse recovery time, compared to FS1G-TP's 150 ns fast recovery specification. Applications requiring fast switching response should use FS1G-LTP. Applications with lower frequency requirements or where slower recovery is acceptable may use S1GH.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both FS1G-LTP and S1GH are ROHS3 compliant, matching the compliance status of the original FS1G-TP.

Q: What is the moisture sensitivity level for substitute parts?

A: Both FS1G-LTP and S1GH carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Can S1GH be used in automotive applications?

A: Yes. S1GH carries automotive-grade qualification with AEC-Q101 certification, making it suitable for automotive applications. FS1G-LTP does not carry automotive qualification.

Q: What packaging formats are available for substitute parts?

A: Both FS1G-LTP and S1GH are supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes.

Q: How do forward voltage characteristics compare between substitutes?

A: FS1G-LTP specifies 1.3 V maximum forward voltage at 1 A, while S1GH specifies 1.1 V maximum forward voltage at 1 A. Lower forward voltage in S1GH results in reduced power dissipation in applications with continuous forward current.