MR752G Equivalent & Substitute Parts

Part Overview

The MR752G is a general-purpose rectifier diode manufactured by onsemi, rated for 200 V DC reverse voltage and 6 A average rectified current. The device features a Microde Button package with through-hole mounting and operates across a junction temperature range of -65°C to 175°C. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating different package configurations.

Substiute Parts

MR752G

onsemiIn Stock: 1191MR752G Datasheet

Current PartRFQ

6A2-TP

Micro Commercial CoIn Stock: 31826A2-TP Datasheet

SimilarRFQ

GI752-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1864GI752-E3/54 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MR752G is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
• Current - Average Rectified (Io): Must equal or exceed 6 A
• Speed: Must match Standard Recovery classification (>500ns, > 200mA)
• Mounting Type: Must be Through Hole
• Technology: Must be Standard

Secondary Compatibility Factors:

• Voltage - Forward (Vf) (Max) @ If: Acceptable range 900 mV to 950 mV @ 6 A
• Current - Reverse Leakage @ Vr: Must not exceed 25 µA @ 200 V
• Operating Temperature - Junction: Minimum -50°C, maximum 150°C acceptable for most applications
• Package / Case: Different axial package configurations (Microde Button, R-6, P600) are mechanically interchangeable in through-hole applications

Both substitute parts listed (6A2-TP and GI752-E3/54) satisfy all primary substitution criteria and fall within acceptable ranges for secondary factors.

Parameter Comparison

Engineering Selection Recommendations

GI752-E3/54 (Vishay General Semiconductor - Diodes Division) is the primary substitute for the obsolete MR752G. This part carries Active product status, ensuring long-term availability and supply chain stability. The GI752-E3/54 meets all electrical specifications with identical reverse voltage (200 V) and current rating (6 A), matching forward voltage (900 mV @ 6 A), and superior reverse leakage performance (5 µA @ 200 V versus 25 µA). The device is ROHS3 compliant and carries full REACH compliance documentation. Operating temperature range (-50°C ~ 150°C) covers standard industrial applications, though it does not extend to the -65°C lower limit of the original MR752G. The P600 package provides mechanical compatibility with through-hole PCB layouts.

6A2-TP (Micro Commercial Co) serves as a secondary substitute option. This part maintains electrical equivalence across all critical parameters (200 V, 6 A, Standard Recovery) with acceptable forward voltage (950 mV @ 6 A) and superior reverse leakage (10 µA @ 200 V). However, the 6A2-TP carries Not For New Designs product status, limiting its suitability for new development. The R-6 package is mechanically compatible with through-hole applications. ROHS3 compliance is confirmed.

For applications requiring the full -65°C lower operating temperature of the original MR752G, neither substitute provides complete thermal coverage. Circuit design review is necessary to confirm acceptability of the -50°C or -55°C lower limits.

Frequently Asked Questions (FAQ)

Q: Can the GI752-E3/54 directly replace the MR752G in existing designs?

A: The GI752-E3/54 provides electrical equivalence across all primary parameters (200 V reverse voltage, 6 A current rating, Standard Recovery speed). The P600 package is mechanically compatible with through-hole PCB layouts. The primary consideration is the reduced operating temperature range (-50°C ~ 150°C versus -65°C ~ 175°C). Applications operating below -50°C junction temperature require thermal analysis to confirm acceptability.

Q: What is the difference between the Microde Button, R-6, and P600 packages?

A: All three packages are axial through-hole configurations suitable for PCB mounting. Microde Button, R-6, and P600 represent different physical form factors from different manufacturers. Package selection depends on PCB layout constraints and lead spacing requirements. Mechanical interchangeability exists for standard through-hole applications.

Q: Why does the 6A2-TP show higher forward voltage (950 mV) compared to the MR752G (900 mV)?

A: Forward voltage variation within 50 mV at rated current (6 A) is within acceptable tolerance for general-purpose rectifier diodes. This difference results from manufacturing process variations between Micro Commercial Co and onsemi. Circuit designs with forward voltage-sensitive applications should account for this 50 mV margin in power dissipation calculations.

Q: Is the GI752-E3/54 suitable for new product designs?

A: Yes. The GI752-E3/54 carries Active product status, indicating manufacturer commitment to ongoing production and support. ROHS3 compliance and REACH documentation confirm suitability for new designs subject to applicable regulatory requirements.

Q: What does "Not For New Designs" mean for the 6A2-TP?

A: This status indicates the manufacturer does not recommend the 6A2-TP for new product development. The part remains available for legacy system maintenance and repair. New designs should prioritize the GI752-E3/54 (Active status) for long-term supply assurance.

Q: How do reverse leakage specifications affect circuit performance?

A: Reverse leakage current (5 µA to 25 µA @ 200 V) represents DC current flow in the reverse-biased state. Lower leakage improves circuit efficiency and reduces heat generation. The GI752-E3/54 (5 µA) and 6A2-TP (10 µA) both provide superior leakage performance compared to the MR752G (25 µA), resulting in improved circuit efficiency.

Q: Are all three parts ROHS compliant?

A: The GI752-E3/54 and 6A2-TP carry explicit ROHS3 compliance certification. The MR752G does not list ROHS status in the provided specifications. All three parts are REACH Unaffected, indicating no conflict with REACH restricted substance regulations.