MR756RLG Equivalent & Substitute Parts

Part Overview

The MR756RLG is a general-purpose rectifier diode manufactured by onsemi, rated for 600V DC reverse voltage and 6A average rectified current in a Through Hole Microde Button package. This component is classified as obsolete, indicating it is no longer in active production. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this diode specification remains applicable.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 6 A
Speed	Standard Recovery >500ns, > 200mA (Io)
Mounting Type	Through Hole
Operating Temperature - Junction	-65°C ~ 175°C
Technology	Standard

Substitute Part Grouping Explanation

Substitute parts for the MR756RLG are identified based on electrical and mechanical parameter equivalence. The primary substitution criteria are:

Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 6 A
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 6 A
Speed Classification: Standard Recovery >500ns, > 200mA (Io)

Mechanical Parameters:

Mounting Type: Through Hole
Package Category: Axial configuration

The GI756-E3/54 manufactured by Vishay General Semiconductor - Diodes Division meets all core electrical specifications and maintains Through Hole mounting compatibility, qualifying it as a direct functional equivalent.

Parameter Comparison

Parameter	MR756RLG (onsemi)	GI756-E3/54 (Vishay)	Match Status
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	Equivalent
Current - Average Rectified (Io)	6 A	6 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	900 mV @ 6 A	900 mV @ 6 A	Equivalent
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Technology	Standard	Standard	Equivalent
Current - Reverse Leakage @ Vr	25 µA @ 600 V	5 µA @ 600 V	Substitute Superior
Operating Temperature - Junction	-65°C ~ 175°C	-50°C ~ 150°C	Substitute Reduced Range
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The GI756-E3/54 is the qualified substitute for the MR756RLG based on the following factors:

Electrical Equivalence: All critical electrical parameters match the original specification, including reverse voltage rating, average rectified current, forward voltage drop, and recovery speed classification.

Product Status: The GI756-E3/54 maintains Active product status with current manufacturing support, whereas the MR756RLG is Obsolete. This ensures long-term availability and supply chain continuity.

Compliance: The GI756-E3/54 is ROHS3 Compliant and carries REACH Unaffected status, meeting modern regulatory requirements. Both parts share identical ECCN and HTSUS classifications.

Reverse Leakage Performance: The GI756-E3/54 exhibits superior reverse leakage characteristics (5 µA @ 600 V versus 25 µA @ 600 V), providing enhanced performance in the substitute.

Temperature Range Consideration: The GI756-E3/54 operating temperature range (-50°C ~ 150°C) is narrower than the MR756RLG (-65°C ~ 175°C). Applications requiring the full original temperature range must evaluate this difference against specific system requirements.

Frequently Asked Questions (FAQ)

Q: Can the GI756-E3/54 be used as a direct replacement for the MR756RLG in existing designs?

A: Yes. The GI756-E3/54 meets all core electrical specifications (600V, 6A, 900mV forward voltage, standard recovery speed) and maintains Through Hole mounting compatibility. The substitute is electrically and mechanically equivalent for standard applications.

Q: What is the difference in reverse leakage between these parts?

A: The MR756RLG specifies 25 µA reverse leakage at 600V, while the GI756-E3/54 specifies 5 µA at the same conditions. The substitute exhibits lower leakage current, which is advantageous in most circuit applications.

Q: Are there temperature range limitations with the GI756-E3/54?

A: The GI756-E3/54 operates from -50°C to 150°C junction temperature, compared to the MR756RLG range of -65°C to 175°C. Applications requiring operation below -50°C or above 150°C must confirm compatibility with system thermal requirements.

Q: What packaging differences exist between these parts?

A: The MR756RLG uses a Microde Button package, while the GI756-E3/54 uses a P600 package. Both are Through Hole axial configurations suitable for PCB mounting. Physical dimensions should be verified for mechanical fit in existing board layouts.

Q: Is the GI756-E3/54 RoHS compliant?

A: Yes. The GI756-E3/54 is ROHS3 Compliant, meeting current environmental and regulatory standards. The MR756RLG compliance status is not specified in the provided data.

Q: What is the availability status of the GI756-E3/54?

A: The GI756-E3/54 maintains Active product status with 5770 pieces in current inventory, ensuring reliable supply chain access. The MR756RLG is Obsolete with limited remaining stock (1077 pieces).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message