MUR120GP-AP Equivalent & Substitute Parts

Part Overview

The MUR120GP-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This device features fast recovery characteristics with a reverse recovery time of 45 ns, making it suitable for applications requiring rapid switching performance.

The MUR120GP-AP carries a "Not For New Designs" product status, indicating that the manufacturer has discontinued active development and support for this component. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance of systems utilizing this diode.

Substiute Parts

MUR120GP-AP

Micro Commercial CoIn Stock: 912MUR120GP-AP Datasheet

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1N4003GP-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 66831N4003GP-E3/73 Datasheet

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GP10D-4003HE3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 802GP10D-4003HE3/73 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MUR120GP-AP are selected based on strict electrical and mechanical parameter matching within the rectifier diode category. The following criteria determine substitution eligibility:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 1 A
• Package / Case: DO-204AL, DO-41, Axial
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Acceptable Parameter Variations:

• Voltage - Forward (Vf) (Max) @ If: Substitute values must not exceed the original specification
• Reverse Recovery Time (trr): Substitute values may differ; fast recovery (≤500 ns) and standard recovery (>500 ns) types are both acceptable for general-purpose applications
• Operating Temperature - Junction: Substitute range may extend beyond the original specification
• Current - Reverse Leakage @ Vr: Substitute values must not exceed the original specification

Substitute parts meeting these criteria maintain functional compatibility with circuits designed for the MUR120GP-AP while accommodating variations in recovery speed and thermal performance.

Parameter Comparison

Engineering Selection Recommendations

1N4003GP-E3/73 (Vishay General Semiconductor - Diodes Division)

The 1N4003GP-E3/73 is an active product suitable for new designs and represents the primary substitute for the MUR120GP-AP. This part meets all mandatory electrical and mechanical parameters: 200 V reverse voltage rating, 1 A average rectified current, and DO-41 through-hole package configuration. The device maintains ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part.

The 1N4003GP-E3/73 exhibits a lower forward voltage drop (1.1 V versus 1.35 V at 1 A), which reduces power dissipation in rectification circuits. The extended operating temperature range (-65 to 175 °C versus -65 to 150 °C) provides additional thermal margin for high-temperature applications. The primary difference is recovery speed classification: the 1N4003GP-E3/73 operates as a standard recovery diode (>500 ns) compared to the fast recovery characteristic (45 ns) of the MUR120GP-AP. This distinction affects switching performance in high-frequency applications but does not impact general-purpose rectification circuits operating at line frequency or lower switching rates.

GP10D-4003HE3/73 (Vishay General Semiconductor - Diodes Division)

The GP10D-4003HE3/73 is an active product that meets the core electrical and mechanical substitution criteria: 200 V reverse voltage, 1 A average rectified current, and DO-41 through-hole package. This part maintains ROHS3 compliance and REACH unaffected status.

Complete electrical parameter specifications for forward voltage, reverse recovery time, and operating temperature range are not provided in the available data. Selection of this part requires verification of application-specific requirements against the manufacturer's detailed datasheet to confirm compatibility with the MUR120GP-AP in the intended circuit.

Frequently Asked Questions (FAQ)

Q: Can the 1N4003GP-E3/73 directly replace the MUR120GP-AP in existing circuits?

A: The 1N4003GP-E3/73 meets all mandatory electrical and mechanical parameters for substitution: 200 V reverse voltage, 1 A average rectified current, and DO-41 through-hole package. The lower forward voltage drop (1.1 V versus 1.35 V) reduces power dissipation. The primary difference is recovery speed: the 1N4003GP-E3/73 is a standard recovery diode (>500 ns) versus the fast recovery characteristic (45 ns) of the MUR120GP-AP. For general-purpose rectification at line frequency, this difference does not affect circuit operation. For high-frequency switching applications, the slower recovery time may impact performance characteristics.

Q: What is the significance of the "Not For New Designs" status of the MUR120GP-AP?

A: This status indicates that the manufacturer has discontinued active development and support for the MUR120GP-AP. Existing inventory remains available, but the part will not receive design updates, process improvements, or long-term supply guarantees. For new product development or long-term production planning, selection of an active substitute part such as the 1N4003GP-E3/73 ensures access to ongoing manufacturer support and supply chain stability.

Q: Are the substitute parts physically compatible with the MUR120GP-AP?

A: Yes. Both substitute parts use the DO-41 through-hole axial package, which is mechanically identical to the MUR120GP-AP. The parts are interchangeable in PCB layouts and breadboard configurations without modification to mechanical mounting or lead spacing.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Recovery speed refers to the reverse recovery time (trr), which is the time required for a diode to transition from forward conduction to reverse blocking when the applied voltage reverses. The MUR120GP-AP has a fast recovery time of 45 ns, while the 1N4003GP-E3/73 has a standard recovery time of 2 µs. Fast recovery diodes minimize switching transients and are preferred in high-frequency applications. Standard recovery diodes are suitable for general-purpose rectification at line frequency and lower switching rates. The choice between fast and standard recovery depends on the circuit's operating frequency and switching requirements.

Q: Do the substitute parts meet the same regulatory and compliance standards as the MUR120GP-AP?

A: Yes. Both substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the MUR120GP-AP. All three parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: What is the impact of the lower forward voltage drop in the 1N4003GP-E3/73?

A: The 1N4003GP-E3/73 exhibits a forward voltage drop of 1.1 V at 1 A, compared to 1.35 V for the MUR120GP-AP. This 0.25 V reduction decreases power dissipation in the diode during forward conduction, resulting in lower heat generation and improved circuit efficiency. For applications with tight thermal budgets or high current density, this improvement is beneficial. For general-purpose rectification, the difference has minimal impact on overall circuit performance.

Q: Is the extended operating temperature range of the 1N4003GP-E3/73 significant?

A: The 1N4003GP-E3/73 operates over a junction temperature range of -65 to 175 °C, compared to -65 to 150 °C for the MUR120GP-AP. The additional 25 °C upper temperature margin provides additional thermal headroom for applications operating in high-temperature environments or with elevated ambient conditions. For applications with strict thermal constraints, this extended range offers design flexibility.