FML-14S Equivalent & Substitute Parts Reference

Part Overview

The Sanken Electric USA Inc. FML-14S is an obsolete diode array in the Diodes, Rectifiers category, provided in bulk packaging. It features a 1 Pair Common Cathode configuration, 400 V maximum DC reverse voltage, and 5A average rectified current per diode. The device is housed in a TO-220-3 Full Pack through-hole package, with fast recovery and RoHS compliance. Due to obsolescence, identifying alternative models with matching electrical and package parameters is necessary to maintain form, fit, and function in ongoing designs and repairs.

Substiute Parts

FML-14S

Sanken Electric USA Inc.In Stock: 4692FML-14S Datasheet

Current PartRFQ

DURF1040CT

Littelfuse Inc.In Stock: 20965DURF1040CT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Sanken FML-14S is determined strictly by matching key electrical and mechanical parameters:

• Diode configuration (1 Pair Common Cathode)
• Maximum DC reverse voltage (400 V)
• Average rectified current per diode (5A)
• Forward voltage at rated current (1.3 V)
• Reverse recovery time (≤ 50 ns)
• Reverse leakage current at Vr (≤ 50 µA @ 400 V)
• Package type and mounting (TO-220-3 Full Pack, Through Hole)
• RoHS and environmental compliance status

Only substitute diode arrays that match these attributes are grouped as direct replacements.

Parameter Comparison

Engineering Selection Recommendations

Selection of an alternative component such as Littelfuse DURF1040CT is justified by:

• FML-14S is obsolete; DURF1040CT is active
• All required compliance standards are specified: both are RoHS compliant
• Substitute meets or exceeds environmental requirements (referenced MSL and RoHS status)
• Both parts are supplied in through-hole TO-220-3 Full Pack variants to ensure mechanical compatibility

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting the FML-14S diode array?
A1: Critical parameters include diode configuration, maximum DC reverse voltage, average rectified current per diode, forward voltage at the specified current, reverse recovery time, reverse leakage current, junction operating temperature, package type, and compliance standards.

Q2: Is package/case compatibility ensured between FML-14S and DURF1040CT?
A2: Both part numbers use a TO-220-3 Full Pack through-hole package, ensuring mechanical compatibility within specified parameters.

Q3: How does compliance affect substitute acceptance?
A3: Both Sanken FML-14S and Littelfuse DURF1040CT are RoHS compliant, supporting substitution without requiring additional environmental qualification.

Q4: How do the electrical characteristics compare between FML-14S and DURF1040CT?
A4: Voltage ratings, current ratings, recovery speeds, and leakage specifications match or are within the stated limits, supporting direct substitution.

Q5: What is the impact of product status on substitution?
A5: The FML-14S is obsolete, making substitution with the active DURF1040CT necessary to ensure ongoing availability for production and servicing needs.