FEP30AP-E3/45 Equivalent & Substitute Parts

Part Overview

The FEP30AP-E3/45 is a general-purpose diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 50 V DC reverse voltage and 15 A average rectified current per diode. The device is housed in a TO-3P-3 (SC-65-3) through-hole package and is classified as a fast recovery rectifier diode. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to provide design flexibility when the primary part is unavailable or when application requirements necessitate alternative electrical characteristics.

Substiute Parts

FEP30AP-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 936FEP30AP-E3/45 Datasheet

Current PartRFQ

STTH3002CW

STMicroelectronicsIn Stock: 5028STTH3002CW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FEP30AP-E3/45 is determined by electrical and mechanical compatibility within the diode rectifier category. The primary substitution criteria are:

Mandatory Compatibility Parameters:

• Diode Configuration: 1 Pair Common Cathode (functional topology must remain identical)
• Current Rating: 15 A average rectified current per diode (current handling capacity must be maintained or exceeded)
• Mounting Type: Through Hole (physical installation method must be compatible)
• Technology: Standard fast recovery rectifier diode classification

Allowable Variation Parameters:

• Voltage - DC Reverse (Vr): Substitute parts may exceed the 50 V rating, provided the application does not require voltage derating
• Forward Voltage (Vf): Minor variations are acceptable within the fast recovery diode classification
• Reverse Recovery Time (trr): Faster recovery times are acceptable substitutes
• Operating Temperature Range: Extended maximum junction temperature is acceptable
• Package Designation: TO-247-3 is mechanically and electrically compatible with TO-3P-3 through-hole mounting

The STTH3002CW meets all mandatory compatibility criteria and is qualified as a direct substitute for the FEP30AP-E3/45.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: FEP30AP-E3/45

The FEP30AP-E3/45 is recommended for applications requiring a 50 V rated general-purpose diode array with 15 A current capacity. This part is Active in product status, maintains full RoHS3 compliance, and carries unlimited moisture sensitivity rating. The 35 ns reverse recovery time and 950 mV forward voltage drop at 15 A are suitable for standard rectification and switching applications operating within the -55°C to 150°C junction temperature range.

Substitute Part: STTH3002CW

The STTH3002CW is a qualified substitute for the FEP30AP-E3/45 and is recommended when:

• The primary part is unavailable or subject to extended lead times
• The application operates at voltages below 50 V and can tolerate the higher 200 V rating of the substitute
• The application benefits from the faster 22 ns reverse recovery time
• The application requires extended maximum junction temperature operation (175°C vs. 150°C)
• The application can accommodate the slightly higher forward voltage drop of 1.05 V at 15 A

Both parts maintain Active product status, ROHS3 compliance, and unlimited moisture sensitivity rating. The STTH3002CW is manufactured by STMicroelectronics and is available in higher inventory quantities (4980 pcs vs. 924 pcs for the primary part).

Frequently Asked Questions (FAQ)

Q: Can the STTH3002CW be used as a direct replacement for the FEP30AP-E3/45 in all applications?

A: The STTH3002CW is electrically and mechanically compatible with the FEP30AP-E3/45 for applications operating at or below 50 V. The substitute part's higher voltage rating (200 V) does not prevent its use in lower-voltage circuits. However, the slightly higher forward voltage drop (1.05 V vs. 950 mV at 15 A) may result in marginally increased power dissipation in the substitute device. Verify that thermal management and circuit performance remain acceptable with the substitute part's electrical characteristics.

Q: Are the TO-3P-3 and TO-247-3 packages mechanically interchangeable?

A: Both TO-3P-3 and TO-247-3 are three-lead through-hole packages designed for TO-247 form factor applications. The packages are mechanically compatible for through-hole PCB mounting. Pin spacing and lead configuration are compatible, allowing direct substitution without PCB redesign.

Q: What is the significance of the faster reverse recovery time in the STTH3002CW?

A: The STTH3002CW exhibits a reverse recovery time of 22 ns compared to 35 ns for the FEP30AP-E3/45. Faster reverse recovery reduces switching losses and improves efficiency in high-frequency rectification and switching applications. This characteristic represents an improvement over the primary part and is acceptable for all applications where the primary part is specified.

Q: Does the higher maximum junction temperature of the STTH3002CW affect substitution suitability?

A: The STTH3002CW supports a maximum junction temperature of 175°C compared to 150°C for the FEP30AP-E3/45. This extended temperature rating does not restrict substitution; it provides additional thermal margin for applications operating at elevated temperatures. Applications designed for the FEP30AP-E3/45 operating range (-55°C to 150°C) remain fully compatible with the STTH3002CW.

Q: How does the higher reverse leakage current of the STTH3002CW impact circuit performance?

A: The STTH3002CW exhibits 20 µA reverse leakage at 200 V compared to 10 µA at 50 V for the FEP30AP-E3/45. Reverse leakage current is measured at the device's rated voltage; direct comparison at different voltages is not applicable. At equivalent voltage levels, the leakage characteristics remain acceptable for standard rectification applications.

Q: Are both parts RoHS3 compliant and suitable for regulated supply chains?

A: Both the FEP30AP-E3/45 and STTH3002CW are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Both parts are REACH unaffected and classified under ECCN EAR99. Both parts are suitable for use in regulated supply chains and applications requiring environmental compliance documentation.