FEP30BP-E3/45 Equivalent & Substitute Parts

Part Overview

The FEP30BP-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 100 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 product maintains Active 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

FEP30BP-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1523FEP30BP-E3/45 Datasheet

Current PartRFQ

STTH3002CW

STMicroelectronicsIn Stock: 5028STTH3002CW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FEP30BP-E3/45 is determined by strict alignment of electrical and mechanical parameters within the diode rectifier category. The primary substitution criteria are:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Current - Average Rectified (Io): 15 A per diode
• Mounting Type: Through Hole
• Technology: Standard (Fast Recovery classification)
• RoHS3 Compliance and MSL Level 1 status

Allowable Parameter Variations:

• Voltage - DC Reverse (Vr): Substitute parts may exceed the 100 V rating of the primary part, provided the application circuit does not exceed the primary part's voltage specification
• Package / Case: Mechanical compatibility within the TO-247 family is permitted when pin configuration and thermal characteristics remain functionally equivalent
• Reverse Recovery Time (trr): Faster recovery times in substitute parts are acceptable for applications requiring improved switching performance
• Forward Voltage (Vf): Minor variations are acceptable within the fast recovery diode classification

The STTH3002CW from STMicroelectronics meets all mandatory matching criteria and is designated as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The FEP30BP-E3/45 remains the specified component when design requirements explicitly call for 100 V DC reverse voltage rating and the Vishay manufacturing source is required for supply chain or qualification purposes.

Substitute Part Selection: The STTH3002CW is selected as a direct substitute when:

• The FEP30BP-E3/45 is unavailable from inventory or supply channels
• The application circuit operates at voltages not exceeding 100 V DC
• The circuit design accommodates the slightly higher forward voltage drop (1.05 V versus 950 mV at 15 A)
• The faster reverse recovery time (22 ns versus 35 ns) does not introduce switching transient issues in the application

Both parts maintain Active product status, full RoHS3 compliance, and unlimited moisture sensitivity rating. Both are supplied in tube packaging and are suitable for through-hole assembly processes. The TO-247 package family compatibility ensures mechanical and thermal equivalence for standard PCB mounting applications.

Frequently Asked Questions (FAQ)

Q: Can the STTH3002CW be used in place of the FEP30BP-E3/45 in all applications?

A: The STTH3002CW is functionally equivalent for applications operating at or below 100 V DC. The substitute part is rated for 200 V, which provides additional voltage margin. However, the forward voltage drop is 100 mV higher at 15 A operation. Verify that the circuit design accommodates this increased voltage drop, particularly in low-voltage or high-efficiency applications where power dissipation is critical.

Q: Are the packages mechanically interchangeable?

A: Both the FEP30BP-E3/45 (TO-3P-3, SC-65-3) and STTH3002CW (TO-247-3) are members of the TO-247 package family and share identical pin configurations and through-hole mounting footprints. Direct PCB substitution is mechanically compatible without layout modifications.

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

A: The STTH3002CW exhibits a reverse recovery time of 22 ns compared to 35 ns in the FEP30BP-E3/45. Faster recovery reduces switching losses and improves efficiency in high-frequency rectification circuits. This characteristic does not create compatibility issues; it represents an improvement in switching performance. Verify that the circuit design does not depend on the slower recovery time of the primary part.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the FEP30BP-E3/45 and STTH3002CW are RoHS3 compliant with MSL Level 1 (unlimited moisture sensitivity). Both parts are suitable for applications requiring environmental compliance certification.

Q: What is the significance of the higher reverse leakage current in the STTH3002CW?

A: The STTH3002CW is specified at 20 µA @ 200 V, while the FEP30BP-E3/45 is specified at 10 µA @ 100 V. Leakage current specifications are measured at the part's rated voltage. At the FEP30BP-E3/45 operating voltage of 100 V, the STTH3002CW leakage current would be lower than the specified value at 200 V. This does not present a substitution concern for standard rectification applications.

Q: Can the FEP30BP-E3/45 be substituted with a part rated for lower voltage?

A: No. Substitution with lower-voltage-rated parts is not permitted. The FEP30BP-E3/45 is rated for 100 V DC reverse voltage. Any substitute must maintain or exceed this voltage rating to ensure circuit protection and component reliability.