RB425D-TP Equivalent & Substitute Parts

Part Overview

The RB425D-TP is a Schottky diode array manufactured by Micro Commercial Co, configured as 1 pair common cathode with a maximum reverse voltage of 40 V and average rectified current of 100 mA per diode. The device is packaged in a surface mount TO-236-3 (SOT-23-3) package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

RB425D-TP

Micro Commercial CoIn Stock: 1077RB425D-TP Datasheet

Current PartRFQ

BAS40-7-F

Diodes IncorporatedIn Stock: 35440BAS40-7-F Datasheet

SimilarRFQ

RB425DT146

Rohm SemiconductorIn Stock: 17173RB425DT146 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RB425D-TP are identified based on the following critical parameters that determine functional compatibility:

Mandatory Matching Parameters:

• Technology: Schottky
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• Voltage - DC Reverse (Vr) (Max): 40 V minimum
• Current - Average Rectified (Io): Equal to or greater than 100 mA per diode
• RoHS Status: ROHS3 Compliant

Substitution Categories:

Parametric Equivalent: Parts with identical electrical specifications and diode configuration (1 pair common cathode) are classified as parametric equivalents. These parts maintain the same forward voltage, reverse leakage current, and junction temperature rating.

Functional Equivalent: Parts with higher current ratings or improved electrical characteristics (lower forward voltage, lower reverse leakage) in the same package are classified as functional equivalents. These parts provide enhanced performance while maintaining voltage and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

RB425DT146 (Rohm Semiconductor) - Parametric Equivalent

The RB425DT146 is a parametric equivalent offering identical electrical specifications to the RB425D-TP, including the same diode configuration (1 pair common cathode), forward voltage (550 mV @ 100 mA), and reverse leakage current (30 µA @ 10 V). This part is currently in active production status with 17,100 units in stock. The RB425DT146 maintains full compliance with ROHS3 and REACH requirements. Selection of this part is appropriate for direct replacement in applications requiring the exact electrical and functional characteristics of the original design.

BAS40-7-F (Diodes Incorporated) - Functional Equivalent

The BAS40-7-F is a functional equivalent with enhanced electrical performance characteristics. This part provides double the current rating (200 mA versus 100 mA) while maintaining the same 40 V reverse voltage rating and SOT-23-3 package. The BAS40-7-F features improved reverse leakage current (200 nA @ 30 V versus 30 µA @ 10 V) and an extended operating temperature range (-55°C to 125°C). This part is currently in active production status with 35,400 units in stock and maintains full ROHS3 and REACH compliance. The BAS40-7-F is a single diode configuration rather than a diode pair, requiring circuit topology evaluation. Selection of this part is appropriate for applications where enhanced current capacity and improved leakage characteristics provide design margin benefits.

Frequently Asked Questions (FAQ)

Q: Can the RB425DT146 be used as a direct replacement for the RB425D-TP?

A: Yes. The RB425DT146 is a parametric equivalent with identical diode configuration (1 pair common cathode), voltage rating (40 V), current rating (100 mA per diode), forward voltage (550 mV @ 100 mA), and reverse leakage current (30 µA @ 10 V). Both parts are packaged in TO-236-3 (SOT-23-3) surface mount packages. No circuit modifications are required.

Q: What is the key difference between the RB425DT146 and BAS40-7-F?

A: The RB425DT146 maintains the same diode pair common cathode configuration as the RB425D-TP, while the BAS40-7-F is a single diode device. The BAS40-7-F provides higher current capacity (200 mA versus 100 mA) and superior reverse leakage characteristics (200 nA versus 30 µA). Circuit topology must be evaluated to determine if the single diode configuration is compatible with the application.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts are available in the TO-236-3 (SC-59, SOT-23-3) surface mount package, ensuring mechanical and thermal compatibility with existing PCB designs and assembly processes.

Q: Do the substitute parts meet the same compliance requirements as the RB425D-TP?

A: Yes. Both the RB425DT146 and BAS40-7-F are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the compliance profile of the RB425D-TP.

Q: Why is the RB425D-TP classified as obsolete?

A: The RB425D-TP is no longer in active production. The RB425DT146 from Rohm Semiconductor serves as the direct parametric replacement with identical specifications and active production status.

Q: What is the reverse recovery time specification for the substitute parts?

A: The reverse recovery time (trr) for the BAS40-7-F is specified as 5 ns. This parameter is not provided for the RB425D-TP or RB425DT146 in the available technical data.

Q: Can the BAS40-7-F be used in high-temperature applications?

A: The BAS40-7-F supports an extended operating temperature range of -55°C to 125°C, compared to the RB425D-TP maximum junction temperature of 125°C. The BAS40-7-F provides additional margin for low-temperature operation.