MUR420GP-TP Equivalent & Substitute Parts

Part Overview

The MUR420GP-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 4 A average rectified current. The device features fast recovery characteristics with a reverse recovery time of 60 ns and is housed in a DO-201AD axial through-hole package. This part is currently active in production and ROHS3 compliant.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. The MUR420-TP variant and MUR420RLG alternative are available for applications requiring functional interchangeability with the primary MUR420GP-TP specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	4	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 4 A
Reverse Recovery Time (trr)	60	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Package / Case	DO-201AD, Axial	-
Mounting Type	Through Hole	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the MUR420GP-TP are classified based on strict equivalence of the following electrical and mechanical parameters:

Primary Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 4 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type: Through Hole
Package Category: Axial

Parametric Equivalent Classification: The MUR420-TP meets all primary equivalence criteria with identical voltage and current ratings, fast recovery speed classification, and through-hole axial mounting. This part is listed as a parametric equivalent despite obsolete product status.

Similar Manufacturer Classification: The MUR420RLG from onsemi meets all primary equivalence criteria with identical voltage and current ratings, fast recovery speed classification, and through-hole axial mounting. This part is classified as a similar manufacturer alternative due to differences in reverse recovery time (35 ns versus 60 ns) and reverse leakage current (5 µA versus 10 µA), which represent improved performance characteristics within the fast recovery diode category.

Parameter Comparison

Parameter	MUR420GP-TP (Main)	MUR420-TP (Parametric Equivalent)	MUR420RLG (Similar Manufacturer)
Manufacturer	Micro Commercial Co	Micro Commercial Co	onsemi
Product Status	Active	Obsolete	Active
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	4 A	4 A	4 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 4 A	1.35 V @ 4 A	890 mV @ 4 A
Reverse Recovery Time (trr)	60 ns	60 ns	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 200 V	10 µA @ 200 V	5 µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AA, DO-27, Axial
Mounting Type	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55 to 150 °C	-55 to 150 °C	-65 to 175 °C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Tape & Reel (TR)	Not specified	Cut Tape (CT)
Inventory Status	1036 Pcs New Original In Stock	856 Pcs New Original In Stock	125200 Pcs New Original In Stock

Engineering Selection Recommendations

MUR420GP-TP (Primary Selection): The MUR420GP-TP is the recommended primary selection for new designs. This part maintains active product status, ensuring long-term availability and supply chain stability. It is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The part is supplied in Tape & Reel packaging suitable for automated assembly processes.

MUR420-TP (Parametric Equivalent): The MUR420-TP is electrically equivalent to the MUR420GP-TP with identical voltage, current, and reverse recovery time specifications. However, this part carries obsolete product status, indicating discontinued production. Selection of this part is not recommended for new designs due to limited availability and supply discontinuation risk. Existing inventory of 856 pieces may be suitable for legacy system maintenance or repair applications only.

MUR420RLG (Similar Manufacturer Alternative): The MUR420RLG from onsemi is an active product suitable for applications where the MUR420GP-TP is unavailable. This part meets all primary equivalence criteria with identical voltage and current ratings. The MUR420RLG demonstrates improved performance characteristics with lower forward voltage drop (890 mV versus 1 V) and faster reverse recovery time (35 ns versus 60 ns). The extended operating temperature range (-65 to 175 °C versus -55 to 150 °C) provides additional thermal margin. All regulatory compliance requirements are met. High inventory availability (125200 pieces) ensures supply continuity. Package compatibility is maintained within the axial through-hole category, though specific package variant differences (DO-201AA/DO-27 versus DO-201AD) require mechanical verification for board layout and component placement.

Frequently Asked Questions (FAQ)

Q: Can the MUR420-TP be used as a direct replacement for the MUR420GP-TP?

A: The MUR420-TP is electrically equivalent to the MUR420GP-TP with identical voltage, current, and reverse recovery time specifications. However, the MUR420-TP carries obsolete product status. For new designs, the MUR420GP-TP is the recommended selection. The MUR420-TP may be used in legacy applications where existing inventory is available.

Q: What are the key differences between the MUR420GP-TP and MUR420RLG?

A: Both parts meet the primary equivalence criteria of 200 V reverse voltage, 4 A average rectified current, and fast recovery speed classification. The MUR420RLG offers improved performance with lower forward voltage drop (890 mV versus 1 V at 4 A), faster reverse recovery time (35 ns versus 60 ns), and lower reverse leakage current (5 µA versus 10 µA). The MUR420RLG also provides an extended operating temperature range (-65 to 175 °C versus -55 to 150 °C). Both parts are ROHS3 compliant and currently active in production.

Q: Are there package compatibility considerations when substituting the MUR420RLG for the MUR420GP-TP?

A: Both parts are through-hole axial diodes suitable for manual or automated assembly. The MUR420GP-TP uses the DO-201AD package, while the MUR420RLG is available in DO-201AA and DO-27 packages. Mechanical verification of board layout, component placement, and lead spacing is required to confirm physical compatibility with the specific application circuit board design.

Q: What is the significance of the fast recovery speed classification?

A: The fast recovery speed classification (≤ 500ns, > 200mA) indicates that all three parts meet the same speed performance category. The reverse recovery time specification provides more precise performance data: MUR420GP-TP and MUR420-TP both specify 60 ns, while the MUR420RLG specifies 35 ns. This faster recovery in the MUR420RLG reduces switching losses in high-frequency applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all three parts (MUR420GP-TP, MUR420-TP, and MUR420RLG) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Which part should be selected for new production designs?

A: The MUR420GP-TP is the recommended selection for new production designs. This part maintains active product status, ensuring long-term supply availability. For applications where the MUR420GP-TP becomes unavailable, the MUR420RLG from onsemi is the recommended alternative, offering improved performance characteristics and high inventory availability.

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