FML-4204S Equivalent & Substitute Parts Reference

Part Overview

The FML-4204S, manufactured by Sanken Electric USA Inc., is a diode array in the Diodes, Rectifiers category, designed for fast recovery applications with a maximum DC reverse voltage of 400 V and a maximum average rectified current of 20A per diode. The device features a 1 Pair Common Cathode configuration, is packaged in a TO-3P-3 Full Pack for through-hole mounting, and is compliant with RoHS standards. The product is currently obsolete, necessitating the identification of substitute models to ensure ongoing system maintenance and manufacturing continuity.

Substiute Parts

FML-4204S

Sanken Electric USA Inc.In Stock: 2966FML-4204S Datasheet

Current PartRFQ

FMD-4204S

Sanken Electric USA Inc.In Stock: 1263FMD-4204S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are selected based strictly on matching critical electrical and mechanical parameters, including category, diode configuration, package type, mounting method, reverse voltage rating, average rectified current, maximum forward voltage, recovery speed, maximum junction temperature, RoHS compliance, and moisture sensitivity level. Only parts conforming to all these key parameters are considered valid substitutes.

Key substitution parameters:

• Category: Diodes, Rectifiers
• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io) (per Diode): 20A
• Voltage - Forward (Vf) (Max) @ If: ≤ 1.4 V @ 10 A
• Speed: Fast Recovery =< 500ns, > 200mA (Io)
• Reverse Recovery Time (trr): 50 ns
• Current - Reverse Leakage @ Vr: ≤ 50 µA @ 400 V
• Operating Temperature - Junction: -40°C ~ 150°C
• Mounting Type: Through Hole
• Package / Case: TO-3P-3 Full Pack / TO-3PF
• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parameter Comparison

Engineering Selection Recommendations

The FML-4204S is classified as obsolete. The FMD-4204S from Sanken Electric USA Inc. matches all provided electrical and mechanical parameters, maintains RoHS compliance, and features the same moisture sensitivity classification. The FMD-4204S holds an active product status and supports continuity of supply in applications previously qualified for the FML-4204S.

Frequently Asked Questions (FAQ)

Q1: What criteria are used to determine acceptable substitutes for the FML-4204S?
A1: Acceptable substitutes must match the FML-4204S in product category, diode configuration, maximum reverse voltage rating, average rectified current per diode, forward voltage at test current, recovery speed, reverse recovery time, reverse leakage current at test voltage, junction temperature range, mounting type, package/case, RoHS status, and moisture sensitivity level.

Q2: Are there any differences in package or pinout between the FML-4204S and FMD-4204S?
A2: Both the FML-4204S and FMD-4204S use the TO-3P-3 Full Pack package for through-hole mounting with the same supplier device package (TO-3PF).

Q3: If my assembly was designed for FML-4204S, do I need to change PCB layout or mounting details to use FMD-4204S?
A3: There is no difference in mounting type or package between FML-4204S and FMD-4204S based on the parameters provided.

Q4: Does the substitute part comply with RoHS directives?
A4: Both the FML-4204S and FMD-4204S are RoHS Compliant.

Q5: Are there differences in maximum operating temperature or MSL classification?
A5: Both parts support a junction operating temperature of -40°C ~ 150°C and feature the same moisture sensitivity level (MSL 1, Unlimited).