FEP16GT/45 Equivalent & Substitute Parts

Part Overview

The FEP16GT/45 is a diode array rectifier manufactured by Vishay General Semiconductor - Diodes Division, configured as a 1 Pair Common Cathode design rated for 400V DC reverse voltage and 16A average rectified current per diode. The component is packaged in a TO-220-3 through-hole configuration and features fast recovery characteristics with a 50 ns reverse recovery time.

The FEP16GT/45 is classified as obsolete. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Active alternatives provide equivalent or comparable electrical performance while offering improved availability and compliance status.

Substiute Parts

FEP16GT/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 893FEP16GT/45 Datasheet

Current PartRFQ

FEP16GT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 4850FEP16GT-E3/45 Datasheet

DirectRFQ

SDUR3040CT

SMC Diode SolutionsIn Stock: 806SDUR3040CT Datasheet

DirectRFQ

MUR1640CT-BP

Micro Commercial CoIn Stock: 1166MUR1640CT-BP Datasheet

MFR RecommendedRFQ

MUR1640CTG

onsemiIn Stock: 53873MUR1640CTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FEP16GT/45 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 400 V
• Package / Case: TO-220-3
• Mounting Type: Through Hole

Compatible Variation Parameters:

• Current - Average Rectified (Io) (per Diode): 16A or higher
• Voltage - Forward (Vf) (Max) @ If: 1.3 V or lower
• Reverse Recovery Time (trr): 50 ns or lower
• Current - Reverse Leakage @ Vr: 10 µA or lower
• Operating Temperature - Junction: -55°C to 150°C or wider range

Substitute parts must satisfy all mandatory matching parameters. Compatible variation parameters allow for equal or superior electrical performance characteristics. Parts with lower current ratings or higher forward voltage drops are not suitable substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: FEP16GT-E3/45

The FEP16GT-E3/45 is the direct equivalent to the FEP16GT/45. Both parts share identical electrical specifications, including 400V reverse voltage, 16A average rectified current, 1.3V forward voltage at 8A, and 50 ns reverse recovery time. The FEP16GT-E3/45 is manufactured by the same supplier (Vishay General Semiconductor - Diodes Division) and maintains active product status. This part is ROHS3 compliant and available in tube packaging with significantly higher inventory (4774 units). Pin-for-pin compatibility and identical thermal characteristics make this the preferred direct replacement.

Secondary Substitute: MUR1640CT-BP

The MUR1640CT-BP, manufactured by Micro Commercial Co, provides equivalent electrical performance with 400V reverse voltage and 16A average rectified current. Forward voltage and reverse recovery time specifications match the original part. This part demonstrates superior reverse leakage characteristics at 5 µA compared to 10 µA in the original design. The MUR1640CT-BP is available in bulk packaging with 1093 units in stock and maintains active product status.

Tertiary Substitute: SDUR3040CT

The SDUR3040CT, manufactured by SMC Diode Solutions, operates at 400V reverse voltage with 15A average rectified current per diode. This represents a 1A reduction in current rating compared to the original 16A specification. The SDUR3040CT exhibits superior reverse recovery time at 45 ns and lower forward voltage at 1.25V @ 15A. This part is ROHS3 compliant and suitable for applications where the 15A current rating is acceptable. Inventory availability is 753 units in tube packaging.

Not Recommended: MUR1640CTG

The MUR1640CTG, manufactured by onsemi, operates at a reduced current rating of 8A average rectified current per diode, representing a 50% reduction from the original 16A specification. While this part maintains 400V reverse voltage and TO-220-3 packaging, the significantly lower current capacity makes it unsuitable as a direct substitute for the FEP16GT/45. The MUR1640CTG is appropriate only for applications with lower current requirements. However, this part offers the widest operating temperature range (-65°C to 175°C) and the highest inventory availability (53800 units).

Frequently Asked Questions (FAQ)

Q: Can the FEP16GT-E3/45 be used as a direct replacement for the FEP16GT/45?

A: Yes. The FEP16GT-E3/45 is a direct equivalent with identical electrical specifications and pin configuration. Both parts feature 400V reverse voltage, 16A average rectified current, 1.3V forward voltage at 8A, and 50 ns reverse recovery time. The primary difference is product status (active vs. obsolete) and compliance certification (ROHS3 compliant vs. non-compliant).

Q: What is the significance of the current rating difference between the FEP16GT/45 (16A) and SDUR3040CT (15A)?

A: The 1A difference represents a 6.25% reduction in maximum average rectified current per diode. The SDUR3040CT is suitable for applications where the circuit design operates below 15A. For circuits requiring the full 16A capacity, the SDUR3040CT may not provide adequate margin and should not be used.

Q: Are all substitute parts compatible with the same PCB layout and thermal management design?

A: All substitute parts share the TO-220-3 package and through-hole mounting configuration, ensuring mechanical compatibility with existing PCB layouts. Thermal management characteristics are equivalent across all substitutes due to identical package geometry. No PCB redesign is required.

Q: Why is the MUR1640CTG not recommended despite high inventory availability?

A: The MUR1640CTG operates at 8A average rectified current per diode, which is 50% lower than the original FEP16GT/45 specification of 16A. This significant current reduction makes it unsuitable as a direct substitute. The part is only appropriate for applications with lower current requirements.

Q: What compliance advantages do the active substitute parts offer?

A: The FEP16GT-E3/45, SDUR3040CT, and MUR1640CTG are all ROHS3 compliant, whereas the original FEP16GT/45 is non-compliant. ROHS3 compliance ensures compliance with European Union Restriction of Hazardous Substances regulations and is increasingly required for new product designs and procurement specifications.

Q: How do reverse leakage characteristics compare across substitute options?

A: The MUR1640CT-BP demonstrates superior reverse leakage performance at 5 µA @ 400V, compared to 10 µA @ 400V in the original FEP16GT/45 and most substitute parts. Lower reverse leakage reduces standby current consumption and improves circuit efficiency in applications sensitive to leakage current.

Q: What is the difference between tube and bulk packaging options?

A: Tube packaging (FEP16GT-E3/45, SDUR3040CT, MUR1640CTG) provides organized component presentation suitable for automated assembly equipment. Bulk packaging (MUR1640CT-BP) offers cost advantages for high-volume applications but requires manual sorting and handling. Packaging selection depends on production volume and assembly process requirements.