MUR115-TP Equivalent & Substitute Parts

Part Overview

The MUR115-TP is a general-purpose rectifier diode rated for 150 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status and limited ongoing availability from the original manufacturer, identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary for design continuity and procurement planning.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	150 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	975 mV @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	45 ns
Current - Reverse Leakage @ Vr	5 µA @ 150 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-50°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the MUR115-TP are identified based on strict equivalence of the following critical parameters:

Voltage Rating: DC reverse voltage of 150 V maximum
Current Rating: Average rectified current of 1 A
Package Type: Through-hole axial configuration (DO-41 / DO-204AL)
Speed Classification: Fast recovery diode characteristics
Reverse Recovery Time: Performance within fast recovery specifications
Reverse Leakage Current: Maximum 5 µA at rated voltage
Temperature Range: Operating junction temperature compatibility
Compliance: ROHS3 compliance for regulatory alignment

The UG1C-E3/73 manufactured by Vishay General Semiconductor - Diodes Division meets all substitution criteria within these defined parameters.

Parameter Comparison

Parameter	MUR115-TP (Main Part)	UG1C-E3/73 (Substitute)	Match Status
Voltage - DC Reverse (Vr) (Max)	150 V	150 V	Equivalent
Current - Average Rectified (Io)	1 A	1 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	975 mV @ 1 A	950 mV @ 1 A	Substitute Superior
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Reverse Recovery Time (trr)	45 ns	25 ns	Substitute Superior
Current - Reverse Leakage @ Vr	5 µA @ 150 V	5 µA @ 150 V	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	Equivalent
Operating Temperature - Junction	-50°C ~ 150°C	-55°C ~ 150°C	Substitute Superior
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Substitute Preferred

Engineering Selection Recommendations

The UG1C-E3/73 is a direct functional equivalent to the MUR115-TP with superior performance characteristics in reverse recovery time and operating temperature range. The substitute part maintains all critical electrical specifications while offering improved switching performance and extended low-temperature operation capability.

The UG1C-E3/73 carries active product status from Vishay General Semiconductor - Diodes Division, ensuring ongoing availability and supply chain stability. Both parts maintain ROHS3 compliance, supporting regulatory requirements for new designs and legacy system maintenance.

The forward voltage drop of the UG1C-E3/73 is 25 mV lower than the MUR115-TP at rated current, resulting in reduced power dissipation in applications with continuous or high-duty-cycle operation.

Frequently Asked Questions (FAQ)

Q: Can the UG1C-E3/73 be used as a direct replacement for the MUR115-TP in existing designs?

A: Yes. The UG1C-E3/73 meets all electrical and mechanical specifications of the MUR115-TP. Both components are rated for 150 V reverse voltage, 1 A average rectified current, and use identical through-hole axial packaging. Pin configuration and footprint compatibility are maintained.

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

A: The MUR115-TP has a reverse recovery time of 45 ns, while the UG1C-E3/73 has 25 ns. The faster recovery time of the substitute part reduces switching losses and improves efficiency in high-frequency rectification applications.

Q: Are there temperature range differences between the parts?

A: The MUR115-TP operates from -50°C to 150°C junction temperature. The UG1C-E3/73 extends the lower temperature limit to -55°C, providing 5°C additional cold-temperature operation capability.

Q: Does the lower forward voltage of the UG1C-E3/73 affect circuit design?

A: The UG1C-E3/73 forward voltage is 950 mV compared to 975 mV for the MUR115-TP at 1 A. This 25 mV difference reduces power dissipation but does not require circuit redesign. Existing designs will function with improved thermal performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the MUR115-TP and UG1C-E3/73 are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: Why is the MUR115-TP listed as obsolete?

A: The MUR115-TP is classified as obsolete by the original manufacturer, Micro Commercial Co. The UG1C-E3/73 from Vishay maintains active product status with ongoing manufacturing and supply availability.

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