RL256M-TP Equivalent & Substitute Parts

Part Overview

The RL256M-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 2.5 A average rectified current in a DO-15 through-hole axial package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging options.

Substiute Parts

RL256M-TP

Micro Commercial CoIn Stock: 1113RL256M-TP Datasheet

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RL256GP-TP

Micro Commercial CoIn Stock: 1024RL256GP-TP Datasheet

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1N5621GP-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 51731N5621GP-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RL256M-TP are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Electrical Compatibility Requirements:

• Voltage - DC Reverse (Vr) (Max): 800 V minimum
• Current - Average Rectified (Io): 2.5 A minimum
• Mounting Type: Through Hole
• Package / Case: DO-15 or DO-204AC (axial configuration)
• Operating Temperature Range: Must encompass or exceed -55°C to 150°C

Identified Substitutes:

RL256GP-TP (Micro Commercial Co): Maintains identical voltage and current ratings with equivalent electrical performance. Differs in packaging format (Tape & Reel vs. bulk) and forward voltage specification (1.1 V vs. 1 V). Product status is Active, providing long-term availability.

1N5621GP-E3/54 (Vishay General Semiconductor): Meets 800 V voltage requirement but operates at reduced current rating (1 A vs. 2.5 A). Provides enhanced performance characteristics including fast recovery speed (≤500ns) and lower reverse leakage (500 nA vs. 5 µA). Extended operating temperature range (-65°C to 175°C). Product status is Active.

Parameter Comparison

Engineering Selection Recommendations

RL256GP-TP is the primary substitute for direct replacement applications. This part maintains identical electrical specifications (800 V, 2.5 A) and operating temperature range as the RL256M-TP. Both components are manufactured by Micro Commercial Co and share the same base product number (RL256). The RL256GP-TP holds Active product status, ensuring continued availability and supply chain stability. Packaging differs (Tape & Reel vs. standard packaging), which may affect procurement and assembly processes but does not impact electrical performance. RoHS3 compliance and MSL rating are equivalent.

1N5621GP-E3/54 serves as a substitute for applications where current requirements do not exceed 1 A. This Vishay component provides enhanced electrical characteristics including fast recovery speed and significantly lower reverse leakage current (500 nA vs. 5 µA). The extended operating temperature range (-65°C to 175°C) accommodates more demanding thermal environments. This part is suitable for designs where the 2.5 A rating of the RL256M-TP is not required and where improved performance characteristics provide system benefits. RoHS3 compliance and MSL rating are equivalent.

Both substitute parts maintain through-hole axial mounting configuration and are compatible with standard PCB assembly processes. Selection between substitutes depends on current requirement validation and packaging format compatibility with existing procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can RL256GP-TP directly replace RL256M-TP in all applications?

A: RL256GP-TP provides electrical equivalence for applications requiring 800 V reverse voltage and 2.5 A average rectified current. The primary difference is packaging format (Tape & Reel vs. standard). Forward voltage specification differs slightly (1.1 V vs. 1 V at 2.5 A), which may affect circuit performance in applications with tight voltage margin requirements. Operating temperature range and compliance certifications are identical.

Q: When is 1N5621GP-E3/54 appropriate as a substitute?

A: 1N5621GP-E3/54 is appropriate for applications where the average rectified current requirement does not exceed 1 A. This part provides superior performance characteristics including fast recovery speed and lower reverse leakage. Applications operating at currents between 1 A and 2.5 A require circuit redesign or alternative component selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RL256M-TP, RL256GP-TP, and 1N5621GP-E3/54 are all ROHS3 Compliant with MSL rating of 1 (Unlimited), meeting environmental and regulatory requirements for modern electronics manufacturing.

Q: What is the significance of package type differences?

A: RL256M-TP uses DO-15 packaging, while RL256GP-TP uses R-3 packaging, and 1N5621GP-E3/54 uses DO-204AC (DO-15 equivalent). All are axial through-hole configurations compatible with standard PCB assembly. Package differences affect procurement format and tape specifications but not electrical performance or PCB footprint compatibility.

Q: How do recovery speed specifications affect circuit performance?

A: RL256M-TP and RL256GP-TP specify Standard Recovery (>500ns), while 1N5621GP-E3/54 specifies Fast Recovery (≤500ns). Recovery speed impacts switching transients and reverse current behavior. Applications sensitive to switching noise or operating at high frequencies may benefit from the faster recovery characteristic of 1N5621GP-E3/54.

Q: What is the impact of reverse leakage current differences?

A: RL256M-TP and RL256GP-TP specify 5 µA reverse leakage at 800 V, while 1N5621GP-E3/54 specifies 500 nA. Lower reverse leakage reduces standby current and heat dissipation in high-impedance circuits. Applications with stringent leakage requirements benefit from 1N5621GP-E3/54 characteristics.