FRB2504-TP Equivalent & Substitute Parts

Part Overview

The FRB2504-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400V DC reverse voltage and 25A average rectified current in a D2PAK surface mount package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The FRB2504-TP features fast recovery characteristics with a reverse recovery time of 250 ns and operates across a junction temperature range of -50°C to 150°C.

Substiute Parts

FRB2504-TP

Micro Commercial CoIn Stock: 1106FRB2504-TP Datasheet

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STTH30R04G

STMicroelectronicsIn Stock: 1324STTH30R04G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FRB2504-TP is determined by equivalence in the following critical parameters:

Mandatory Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 400V minimum
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io): Equal or greater than 25A
• Voltage - Forward (Vf) (Max) @ If: Equal or lower values acceptable
• Reverse Recovery Time (trr): Equal or lower values acceptable
• Current - Reverse Leakage @ Vr: Equal or lower values acceptable
• Operating Temperature - Junction: Equal or wider range acceptable

The STTH30R04G from STMicroelectronics meets all mandatory equivalence criteria and provides enhanced performance characteristics in allowable variation parameters.

Parameter Comparison

Engineering Selection Recommendations

The STTH30R04G is a direct substitute for the FRB2504-TP based on the following engineering criteria:

Package and Mechanical Compatibility: Both components utilize the TO-263-3 D2PAK surface mount package with identical pinout and thermal characteristics, enabling direct PCB layout compatibility without redesign.

Electrical Equivalence: The STTH30R04G maintains the 400V DC reverse voltage rating and exceeds the 25A current requirement with a 30A rating, providing design margin for thermal and electrical stress conditions.

Compliance and Certification: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent handling and storage requirements. The STTH30R04G carries active product status from STMicroelectronics, providing long-term supply chain stability and technical support.

Performance Enhancement: The STTH30R04G delivers superior reverse recovery time (100 ns versus 250 ns), reducing switching losses and electromagnetic interference in rectification circuits. The extended operating temperature range (-40°C to 175°C versus -50°C to 150°C) accommodates broader thermal environments.

Design Considerations: The forward voltage specification of the STTH30R04G (1.45 V @ 30 A) is measured at a higher current rating than the FRB2504-TP (1.3 V @ 25 A). Direct voltage comparison at identical current levels requires manufacturer datasheets. The reverse leakage current of the STTH30R04G (15 µA @ 400 V) is marginally higher than the FRB2504-TP (10 µA @ 400 V), remaining within acceptable limits for general-purpose rectification applications.

Frequently Asked Questions (FAQ)

Q: Can the STTH30R04G be used as a direct replacement for the FRB2504-TP in existing designs?

A: Yes. Both components share identical package geometry (TO-263-3 D2PAK), pinout configuration, and mounting type (surface mount). PCB layout and thermal management designs require no modification. The STTH30R04G's higher current rating (30A versus 25A) and superior reverse recovery time (100 ns versus 250 ns) provide performance enhancement without compatibility issues.

Q: What are the key differences between these two diodes?

A: The primary differences are manufacturer (Micro Commercial Co versus STMicroelectronics), product status (obsolete versus active), and performance specifications. The STTH30R04G offers faster reverse recovery (100 ns versus 250 ns), higher current capacity (30A versus 25A), and a wider operating temperature range (-40°C to 175°C versus -50°C to 150°C). Forward voltage and reverse leakage current are slightly higher in the STTH30R04G but remain within acceptable engineering tolerances.

Q: Are there any thermal management differences between these parts?

A: Both components utilize the D2PAK package with identical thermal interface characteristics. The STTH30R04G's higher current rating and superior reverse recovery characteristics may result in lower junction temperatures under identical operating conditions due to reduced switching losses. Thermal design calculations should reference manufacturer datasheets for specific thermal resistance values (θJA and θJC).

Q: What is the significance of the reverse recovery time difference?

A: Reverse recovery time (trr) determines the duration during which the diode conducts in the reverse direction after the applied voltage reverses polarity. The STTH30R04G's 100 ns recovery time versus the FRB2504-TP's 250 ns represents a 60% reduction in reverse recovery duration. This improvement reduces switching losses, decreases electromagnetic interference, and improves overall circuit efficiency in high-frequency rectification applications.

Q: Are both parts suitable for the same voltage and current applications?

A: Yes, for applications requiring 400V reverse voltage and up to 25A average rectified current. The STTH30R04G's 30A rating provides additional design margin and accommodates applications requiring higher current capacity. Both parts maintain fast recovery characteristics (≤ 500ns, > 200mA) suitable for general-purpose rectification across the specified voltage and current ranges.

Q: What compliance certifications apply to both parts?

A: Both the FRB2504-TP and STTH30R04G are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. The STTH30R04G includes REACH Unaffected status. Both parts are classified under ECCN EAR99 and HTSUS 8541.10.0080 for export and tariff purposes.

Q: Why is the FRB2504-TP classified as obsolete?

A: Obsolete status indicates that Micro Commercial Co has discontinued manufacturing and support for this component. The STTH30R04G from STMicroelectronics provides an active, supported alternative with equivalent functionality and enhanced performance characteristics, ensuring long-term availability and technical support for new designs and production continuity.