MUR115RL Equivalent & Substitute Parts

Part Overview

The MUR115RL is a general-purpose rectifier diode manufactured by onsemi, rated for 150 V DC reverse voltage and 1 A average rectified current in a through-hole axial package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The MUR115RL belongs to the SWITCHMODE™ series and features fast recovery characteristics suitable for switching applications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	150 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	875 mV @ 1 A
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	2 µA @ 150 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-65°C ~ 175°C
Technology	Standard

Substitute Part Grouping Explanation

Substitution of the MUR115RL is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 150 V minimum
Current - Average Rectified (Io): 1 A minimum
Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial compatible

Substitute parts are grouped into two categories:

Parametric Equivalents - Parts with identical or superior electrical characteristics and matching package specifications
Functional Equivalents - Parts meeting minimum voltage and current requirements with compatible package types, though with variations in secondary parameters such as reverse recovery time or forward voltage

All substitute parts listed maintain the 150 V reverse voltage rating and 1 A or greater current capacity. Package compatibility is maintained through DO-204AL (DO-41) or axial configurations.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr (ns)	Ir @ Vr	Package	Tj (Operating)	Product Status
MUR115RL	onsemi	150 V	1 A	875 mV @ 1 A	35 ns	2 µA @ 150 V	DO-204AL, DO-41, Axial	-65°C ~ 175°C	Obsolete
MUR115RLG	onsemi	150 V	1 A	875 mV @ 1 A	35 ns	2 µA @ 150 V	DO-204AL, DO-41, Axial	-65°C ~ 175°C	Obsolete
EGP10C	Fairchild Semiconductor	150 V	1 A	950 mV @ 1 A	50 ns	5 µA @ 150 V	DO-204AL, DO-41, Axial	-65°C ~ 150°C	Active
EGP10C-E3/73	Vishay General Semiconductor - Diodes Division	150 V	1 A	950 mV @ 1 A	50 ns	5 µA @ 150 V	DO-204AL, DO-41, Axial	-65°C ~ 150°C	Active
UG1C-E3/54	Vishay General Semiconductor - Diodes Division	150 V	1 A	950 mV @ 1 A	25 ns	5 µA @ 150 V	DO-204AL, DO-41, Axial	-55°C ~ 150°C	Active
1N6078	Microchip Technology	150 V	1.3 A	1.76 V @ 18.8 A	30 ns	5 µA @ 150 V	A, Axial	-65°C ~ 155°C	Active

Engineering Selection Recommendations

MUR115RLG (onsemi) - Parametric equivalent with identical electrical specifications to the MUR115RL. Differs only in packaging format (Cut Tape versus bulk). RoHS3 compliant status provides regulatory advantage over the original MUR115RL. Recommended as primary replacement for direct substitution in new designs and procurement.

EGP10C (Fairchild Semiconductor) - Functional equivalent meeting all minimum voltage and current requirements. Forward voltage is 75 mV higher at rated current (950 mV versus 875 mV), and reverse recovery time is 15 ns longer (50 ns versus 35 ns). Active product status ensures long-term availability. Suitable for applications where the slightly elevated forward voltage and recovery time are acceptable.

EGP10C-E3/73 (Vishay General Semiconductor - Diodes Division) - Functionally equivalent to EGP10C with identical electrical parameters. RoHS3 compliant. Active product status. Includes capacitance specification (22 pF @ 4 V, 1 MHz) not provided for the original part. Operating temperature range limited to -65°C ~ 150°C versus -65°C ~ 175°C for MUR115RL.

UG1C-E3/54 (Vishay General Semiconductor - Diodes Division) - Functional equivalent with superior reverse recovery time (25 ns versus 35 ns). RoHS3 compliant. Active product status. Operating temperature range limited to -55°C ~ 150°C. Tape & Reel packaging format. Suitable for applications requiring faster recovery characteristics.

1N6078 (Microchip Technology) - Functional equivalent with higher current rating (1.3 A versus 1 A). Forward voltage specification differs in test conditions (1.76 V @ 18.8 A versus 875 mV @ 1 A), limiting direct comparison. Reverse recovery time is 30 ns. Active product status. Lower inventory availability (965 units) compared to other substitutes. Suitable for applications requiring higher current capacity.

Frequently Asked Questions (FAQ)

Q: Can MUR115RLG directly replace MUR115RL?

A: Yes. MUR115RLG is a parametric equivalent with identical voltage, current, forward voltage, and reverse recovery time specifications. Both are through-hole axial packages. The primary difference is packaging format (Cut Tape versus bulk) and RoHS3 compliance status of MUR115RLG.

Q: What is the impact of forward voltage differences between MUR115RL and EGP10C?

A: EGP10C has a maximum forward voltage of 950 mV at 1 A compared to 875 mV for MUR115RL, representing a 75 mV difference. This affects power dissipation and heat generation. In applications with tight thermal budgets or high-frequency switching, this difference may be significant.

Q: Are all substitute parts available in the same package?

A: All substitute parts are available in through-hole axial or DO-204AL (DO-41) packages compatible with MUR115RL. 1N6078 uses package designation "A, Axial" which is mechanically compatible with standard axial through-hole mounting.

Q: Which substitute offers the fastest recovery time?

A: UG1C-E3/54 provides the fastest reverse recovery time at 25 ns, compared to 35 ns for MUR115RL. This characteristic is beneficial in high-frequency switching applications where minimizing reverse recovery losses is critical.

Q: What is the significance of RoHS3 compliance in the substitute parts?

A: MUR115RLG, EGP10C-E3/73, and UG1C-E3/54 are RoHS3 compliant, indicating compliance with Restriction of Hazardous Substances regulations. The original MUR115RL is RoHS non-compliant. RoHS3 compliance is required for many applications in regulated markets and is preferred for new designs.

Q: Can 1N6078 be used in applications designed for 1 A operation?

A: Yes. 1N6078 is rated for 1.3 A average rectified current, exceeding the 1 A requirement of MUR115RL. However, forward voltage specifications are provided at different test conditions (1.76 V @ 18.8 A versus 875 mV @ 1 A), making direct thermal comparison difficult. Verification of thermal performance in the specific application is necessary.

Q: What is the operating temperature range consideration for substitution?

A: MUR115RL operates from -65°C to 175°C. EGP10C, EGP10C-E3/73, and UG1C-E3/54 are limited to -65°C to 150°C or -55°C to 150°C. Applications requiring operation above 150°C must use MUR115RLG or 1N6078 (which operates to 155°C).

Q: Are there inventory considerations for part selection?

A: MUR115RL has 2,227 units in stock. Among substitutes, EGP10C has the highest inventory (35,827 units), followed by MUR115RLG (10,200 units). 1N6078 has the lowest inventory (965 units). Inventory levels may influence procurement decisions for high-volume applications.

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