MUR210G Equivalent & Substitute Parts Reference

Part Overview

The MUR210G is a general-purpose fast recovery rectifier diode manufactured by onsemi, rated for 100 V DC reverse voltage and 2 A average rectified current in an axial through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The MUR210G operates within the SWITCHMODE™ series and is compliant with RoHS3 and REACH regulations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	940 mV @ 2 A	mV
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	30	ns
Current - Reverse Leakage @ Vr	2	µA @ 100 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-65 to 175	°C
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MUR210G is determined by the following critical parameters:

Voltage Rating (Vr): The reverse voltage must equal or exceed 100 V. Parts rated at higher voltages (200 V) are acceptable for voltage substitution but may introduce different forward voltage characteristics.

Current Rating (Io): The average rectified current must equal or exceed 2 A. Parts rated below 2 A are not suitable as direct substitutes.

Speed Classification: Fast recovery characteristics (≤ 500ns) are required to maintain switching performance equivalent to the original MUR210G.

Package Compatibility: Through-hole axial packages (DO-204AL, DO-41, A) are mechanically compatible with the original footprint.

Temperature Range: Operating junction temperature range must support the application's thermal requirements.

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (100 V, 2 A): Parts matching both voltage and current ratings with fast recovery characteristics.

Category B - Voltage-Elevated Substitutes (200 V, 1 A or lower current): Parts with higher voltage ratings but reduced current capacity, suitable only when circuit design permits lower current operation.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	trr	Package	Temp Range	Product Status
MUR210G	onsemi	100 V	2 A	940 mV @ 2 A	30 ns	DO-204AL, DO-41, Axial	-65 to 175°C	Obsolete
EGP20B-E3/54	Vishay General Semiconductor	100 V	2 A	950 mV @ 2 A	50 ns	DO-204AC, DO-15, Axial	-65 to 150°C	Active
1N4935-T	Diodes Incorporated	200 V	1 A	1.2 V @ 1 A	200 ns	DO-204AL, DO-41, Axial	-65 to 150°C	Active
1N4935G	Taiwan Semiconductor Corporation	200 V	1 A	1.2 V @ 1 A	200 ns	DO-204AL, DO-41, Axial	-55 to 150°C	Active
1N6077	Microchip Technology	100 V	1.3 A	1.76 V @ 18.8 A	30 ns	A, Axial	-65 to 155°C	Active
UG1B-M3/54	Vishay General Semiconductor	100 V	1 A	950 mV @ 1 A	25 ns	DO-204AL, DO-41, Axial	-55 to 150°C	Active
1N4002-T	Diodes Incorporated	100 V	1 A	1 V @ 1 A	—	DO-204AL, DO-41, Axial	-65 to 150°C	Last Time Buy

Engineering Selection Recommendations

For Direct Replacement (100 V, 2 A Operation):

The EGP20B-E3/54 from Vishay General Semiconductor is the primary equivalent substitute. It maintains identical voltage and current ratings with fast recovery characteristics. Forward voltage (950 mV @ 2 A) is within 1% of the original specification. The part is in active production status with RoHS3 compliance and unlimited moisture sensitivity level. Operating temperature range extends to -65°C, matching the MUR210G lower limit. This part is suitable for direct PCB substitution in axial through-hole applications.

For Voltage-Elevated Applications (100 V Circuit, Reduced Current Tolerance):

The 1N4935-T and 1N4935G are 200 V, 1 A fast recovery diodes suitable only when circuit design permits operation at 1 A or lower. Both parts are in active production with RoHS3 compliance. The 1N4935-T (Diodes Incorporated) offers standard cut-tape packaging, while 1N4935G-T provides tape & reel packaging. These parts are not recommended for applications requiring the full 2 A rating of the MUR210G.

For Current-Limited Substitution (100 V, 1 A or Lower):

The UG1B-M3/54 from Vishay General Semiconductor operates at 100 V with 1 A rating and offers superior reverse recovery time (25 ns). This part is suitable only for circuits designed for 1 A operation. The 1N4002-T from Diodes Incorporated is available but classified as Last Time Buy, indicating limited future availability.

Compliance Considerations:

All recommended active substitutes maintain RoHS3 compliance and REACH unaffected status. The 1N6077 from Microchip Technology is RoHS non-compliant and should be avoided for new designs requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the EGP20B-E3/54 directly replace the MUR210G in all applications?

A: Yes, for applications operating at 100 V and 2 A. The EGP20B-E3/54 matches the voltage and current ratings with equivalent fast recovery performance. The forward voltage specification (950 mV @ 2 A) is within 1% of the original. Package compatibility exists between DO-204AC (DO-15) and DO-204AL (DO-41) axial formats for through-hole mounting.

Q: What is the difference between the 1N4935-T and 1N4935G?

A: Both are 200 V, 1 A fast recovery diodes with identical electrical specifications. The primary difference is packaging: 1N4935-T is supplied in cut tape format, while 1N4935G is supplied in tape & reel format. Neither is suitable for applications requiring 2 A operation.

Q: Why is the 1N6077 not recommended despite matching voltage and current specifications?

A: The 1N6077 is RoHS non-compliant, making it unsuitable for new designs or applications requiring regulatory compliance. Additionally, the forward voltage specification (1.76 V @ 18.8 A) is measured at a different current level, making direct comparison with the MUR210G specification unreliable.

Q: Can I use a 200 V rated diode in a 100 V circuit?

A: Yes, voltage derating is acceptable. A 200 V diode operates safely in a 100 V circuit. However, the 1N4935 series is rated for only 1 A, making it unsuitable for the MUR210G's 2 A requirement. Use only if your circuit design permits 1 A operation.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time affects switching speed and switching losses in rectifier applications. The MUR210G specifies 30 ns. The EGP20B-E3/54 specifies 50 ns, which is acceptable for most general-purpose rectification. The UG1B-M3/54 offers superior performance at 25 ns but is limited to 1 A operation.

Q: Are there package compatibility issues between DO-204AL and DO-204AC?

A: Both are axial through-hole packages with compatible lead spacing for standard PCB footprints. DO-204AL (DO-41) and DO-204AC (DO-15) are mechanically interchangeable in most applications, though DO-15 has a slightly larger body diameter.

Q: What is the product status significance for long-term procurement?

A: The MUR210G is obsolete, indicating no further production. The EGP20B-E3/54, 1N4935-T, and 1N4935G are in active production, ensuring long-term availability. The 1N4002-T is Last Time Buy, indicating limited remaining stock and imminent discontinuation.

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