MR756RL Equivalent & Substitute Parts

Part Overview

The MR756RL is a general-purpose rectifier diode manufactured by onsemi, rated for 600 V DC reverse voltage and 6 A average rectified current. The device features a through-hole Microde Button package with standard recovery characteristics. The MR756RL is classified as obsolete, necessitating identification of equivalent substitute components for ongoing applications and new designs. Substitute parts must maintain electrical performance within the specified voltage and current ratings while accommodating packaging and compliance requirements.

Substiute Parts

MR756RL

onsemiIn Stock: 1128MR756RL Datasheet

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6A6-TP

Micro Commercial CoIn Stock: 14296A6-TP Datasheet

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GI756-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 5809GI756-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MR756RL are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Voltage - DC Reverse (Vr) (Max): 600 V minimum
• Current - Average Rectified (Io): 6 A minimum
• Mounting Type: Through Hole
• Speed Classification: Standard Recovery >500ns, > 200mA (Io)
• Operating Temperature Range: Must accommodate the application requirements

All identified substitute parts maintain the 600 V / 6 A electrical specification and through-hole mounting configuration. Variations in forward voltage, reverse leakage current, package geometry, and compliance status are documented to enable informed component selection based on application constraints.

Parameter Comparison

Engineering Selection Recommendations

GI756-E3/54 (Vishay General Semiconductor - Diodes Division) is the primary substitute for new designs and ongoing applications. This component is classified as Active with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The GI756-E3/54 matches the MR756RL electrical specifications exactly at the critical 600 V / 6 A rating and forward voltage specification (900 mV @ 6 A). The reverse leakage current is superior at 5 µA compared to the MR756RL at 25 µA, providing improved performance margins. The operating temperature range of -50°C ~ 150°C accommodates most industrial applications, with the exception of extreme low-temperature environments requiring the MR756RL's -65°C minimum.

6A6-TP (Micro Commercial Co) is classified as Not For New Designs and serves as a secondary substitute for legacy system maintenance only. This component maintains electrical compatibility but exhibits higher forward voltage (950 mV @ 6 A) and a narrower operating temperature range (-55°C ~ 125°C). The 6A6-TP is suitable for direct replacement in existing installations where thermal and voltage drop margins are adequate.

The MR756RL's RoHS non-compliant status and obsolete classification necessitate transition to compliant alternatives. Both substitute parts are ROHS3 compliant and support regulatory requirements for new equipment designs.

Frequently Asked Questions (FAQ)

Q: Can the GI756-E3/54 directly replace the MR756RL in all applications?

A: The GI756-E3/54 maintains electrical equivalence at the 600 V / 6 A specification and forward voltage rating. The primary consideration is the operating temperature range: the GI756-E3/54 operates from -50°C to 150°C, while the MR756RL extends to -65°C. Applications requiring operation below -50°C require thermal analysis or alternative component selection.

Q: What is the difference between the Microde Button and P600 packages?

A: Both are through-hole axial packages designed for 600 V / 6 A rectifier diodes. The Microde Button (MR756RL) and P600 (GI756-E3/54) are distinct mechanical packages from different manufacturers. Physical dimensions and PCB footprints differ; mechanical verification is required for board-level integration.

Q: Why does the GI756-E3/54 have lower reverse leakage current than the MR756RL?

A: Reverse leakage current (5 µA vs. 25 µA @ 600 V) reflects manufacturing process differences and device design. The lower leakage in the GI756-E3/54 indicates superior reverse-bias performance and reduced standby power dissipation, providing operational advantages in applications sensitive to leakage current.

Q: Is the 6A6-TP suitable for new equipment designs?

A: The 6A6-TP is classified as Not For New Designs by the manufacturer. This designation indicates the component is in end-of-life status. New designs must utilize the GI756-E3/54 or equivalent active-status components to ensure long-term supply chain stability and regulatory compliance.

Q: What compliance differences exist between the substitute parts?

A: The MR756RL is RoHS non-compliant. Both substitute parts (6A6-TP and GI756-E3/54) are ROHS3 compliant, meeting current environmental and regulatory requirements for equipment sold in regulated markets. All three components are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Can the 6A6-TP be used as a long-term replacement for the MR756RL?

A: The 6A6-TP is suitable for temporary legacy system maintenance only. The Not For New Designs classification indicates limited future availability. Long-term applications require transition to the GI756-E3/54 to ensure sustained component supply and regulatory compliance.