MUR105GP-AP Equivalent & Substitute Parts

Part Overview

The MUR105GP-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Identifying equivalent and substitute parts is necessary for applications requiring continued support, legacy system maintenance, or when original stock becomes unavailable.

Substiute Parts

MUR105GP-AP

Micro Commercial CoIn Stock: 774MUR105GP-AP Datasheet

Current PartRFQ

1N4933G R1G

Taiwan Semiconductor CorporationIn Stock: 9781N4933G R1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MUR105GP-AP is determined by matching the following critical electrical and mechanical parameters:

Electrical Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 50 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Speed classification: Fast Recovery (≤ 500 ns, > 200 mA)
• Reverse Recovery Time (trr): Within acceptable operating range
• Current - Reverse Leakage @ Vr: 5 µA @ 50 V or lower

Mechanical Matching Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-204AL or DO-41 (equivalent axial packages)
• Operating Temperature Range: Must support -65°C to 150°C junction temperature or equivalent

Compliance Matching Criteria:

• RoHS3 Compliance
• REACH Unaffected status

The 1N4933G R1G from Taiwan Semiconductor Corporation meets all substitution criteria for the MUR105GP-AP within the allowed parameter specifications.

Parameter Comparison

Engineering Selection Recommendations

The 1N4933G R1G is a direct substitute for the MUR105GP-AP based on electrical and mechanical parameter equivalence. The substitute part is classified as Active product status, whereas the MUR105GP-AP is Not For New Designs. Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment.

The 1N4933G R1G exhibits a slightly higher forward voltage drop (1.2 V versus 970 mV at 1 A) and longer reverse recovery time (200 ns versus 45 ns). These differences remain within acceptable operating ranges for general-purpose rectification applications and do not preclude functional substitution. The operating temperature range of the substitute (-55°C to 150°C) covers the upper operating limit of the original part and is suitable for most industrial and commercial applications.

Selection of the 1N4933G R1G is appropriate for applications requiring continued component availability, legacy system support, or new designs where the MUR105GP-AP is no longer procurable.

Frequently Asked Questions (FAQ)

Q: Can the 1N4933G R1G replace the MUR105GP-AP in existing applications?

A: Yes. Both parts share identical voltage and current ratings (50 V, 1 A), equivalent fast recovery speed classification, matching package types (DO-41/DO-204AL), and identical reverse leakage current specifications. The substitute part is electrically and mechanically compatible.

Q: What is the significance of the higher forward voltage drop in the 1N4933G R1G?

A: The 1N4933G R1G exhibits a forward voltage of 1.2 V compared to 970 mV in the MUR105GP-AP at 1 A. This 230 mV difference results in slightly higher power dissipation in rectification circuits. For applications with tight thermal budgets or high-frequency switching, this parameter should be evaluated against circuit design margins.

Q: Does the longer reverse recovery time of the 1N4933G R1G affect performance?

A: The 1N4933G R1G has a reverse recovery time of 200 ns versus 45 ns for the MUR105GP-AP. Both parts are classified as fast recovery diodes. The longer recovery time in the substitute may introduce marginally higher switching losses in high-frequency applications but remains within fast recovery specifications and is suitable for standard rectification circuits.

Q: Are both parts RoHS compliant?

A: Yes. Both the MUR105GP-AP and 1N4933G R1G are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in operating temperature range?

A: The MUR105GP-AP operates from -65°C to 150°C junction temperature, while the 1N4933G R1G operates from -55°C to 150°C. The substitute part covers the upper temperature limit and is suitable for applications not requiring operation below -55°C. For cryogenic or extreme low-temperature applications, the original part specification should be retained.

Q: Are the DO-41 and DO-204AL packages physically identical?

A: DO-41 and DO-204AL are equivalent designations for the same axial through-hole package. Both parts use this package type, ensuring mechanical compatibility in PCB layouts and through-hole assembly processes.

Q: What is the product status difference between these parts?

A: The MUR105GP-AP is classified as Not For New Designs, indicating it has been superseded. The 1N4933G R1G is classified as Active, meaning it is currently manufactured and supported by Taiwan Semiconductor Corporation. For new designs, the active substitute is the recommended choice.