EGP10B-M3/73 Equivalent & Substitute Parts

Part Overview

The EGP10B-M3/73 is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 1 A average rectified current in a through-hole DO-204AL (DO-41) axial package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the EGP10B-M3/73 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Mounting Type: Must be Through Hole
Package / Case: Must be DO-204AL, DO-41, or Axial configuration

Performance Characteristics:

Forward voltage drop (Vf) at rated current
Reverse recovery time (trr) and speed classification
Reverse leakage current (Ir)
Operating temperature range

Substitute parts are grouped into three categories:

Category 1: Parametric Equivalents (Active Status) Parts with identical or superior electrical ratings, same package type, and active product status. These provide direct replacement capability with enhanced availability.

Category 2: Functional Upgrades (Active Status) Parts with equal or higher current ratings, identical voltage ratings, same package type, and active product status. These offer improved performance margins and long-term supply assurance.

Category 3: Manufacturer-Recommended Alternatives (Active Status) Parts from alternative manufacturers meeting the core electrical requirements, available in through-hole axial packages, with active product status and full compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Speed	trr	Package	Status	RoHS
EGP10B-M3/73	Vishay	100 V	1 A	950 mV @ 1 A	Fast Recovery ≤ 500ns	50 ns	DO-204AL (DO-41)	Obsolete	ROHS3
EGP10B-E3/73	Vishay	100 V	1 A	950 mV @ 1 A	Fast Recovery ≤ 500ns	50 ns	DO-204AL (DO-41)	Active	ROHS3
EGP10B	Fairchild Semiconductor	100 V	1 A	950 mV @ 1 A	Fast Recovery ≤ 500ns	50 ns	DO-204AL (DO-41)	Active	Not specified
1N4002G A0G	Taiwan Semiconductor Corporation	100 V	1 A	1 V @ 1 A	Standard Recovery >500ns	Not specified	DO-204AL (DO-41)	Active	ROHS3
1N4002G B0G	Taiwan Semiconductor Corporation	100 V	1 A	1 V @ 1 A	Standard Recovery >500ns	Not specified	DO-204AL (DO-41)	Active	ROHS3
1N6077	Microchip Technology	100 V	1.3 A	1.76 V @ 18.8 A	Fast Recovery ≤ 500ns	30 ns	Axial	Active	Non-compliant
MUR210G	onsemi	100 V	2 A	940 mV @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-204AL (DO-41)	Obsolete	ROHS3
MUR210RLG	onsemi	100 V	2 A	940 mV @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-204AL (DO-41)	Active	ROHS3
MURA210T3G	onsemi	100 V	2 A	940 mV @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-214AC (SMA)	Active	ROHS3
PR1002G-T	Diodes Incorporated	100 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150 ns	DO-204AL (DO-41)	Active	ROHS3
RGP10B	Fairchild Semiconductor	100 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150 ns	DO-204AL (DO-41)	Active	Not specified

Engineering Selection Recommendations

Primary Recommendation: EGP10B-E3/73

The EGP10B-E3/73 from Vishay General Semiconductor - Diodes Division is the optimal direct replacement for the obsolete EGP10B-M3/73. This part maintains identical electrical specifications including 100 V reverse voltage, 1 A average rectified current, 950 mV forward voltage drop at 1 A, and 50 ns reverse recovery time. The EGP10B-E3/73 is classified as active product status with ROHS3 compliance and is available in high inventory (2300 pcs). The identical package configuration (DO-204AL/DO-41 axial) ensures mechanical and electrical compatibility without design modification.

Secondary Recommendation: EGP10B (Fairchild Semiconductor)

The EGP10B from Fairchild Semiconductor provides equivalent electrical performance with identical voltage and current ratings, forward voltage characteristics, and fast recovery speed. This part is active status with significantly higher inventory availability (66152 pcs) and the same DO-204AL (DO-41) package. This option is suitable when supply chain flexibility is prioritized.

Alternative Recommendation: MUR210RLG (onsemi)

The MUR210RLG from onsemi is an active-status alternative with superior current rating (2 A versus 1 A), identical 100 V reverse voltage, and improved reverse recovery time (30 ns versus 50 ns). This part is classified as SWITCHMODE™ series with ROHS3 compliance and high inventory (3015 pcs). The MUR210RLG is suitable for applications requiring enhanced current margin and improved switching performance. The identical DO-204AL (DO-41) axial package ensures direct mechanical compatibility.

Functional Alternative: PR1002G-T (Diodes Incorporated)

The PR1002G-T from Diodes Incorporated meets the core electrical requirements with 100 V reverse voltage and 1 A average rectified current in the DO-204AL (DO-41) package. This part is active status with ROHS3 compliance. The forward voltage is higher (1.3 V @ 1 A) and reverse recovery time is longer (150 ns), making it suitable for non-critical timing applications where these performance differences are acceptable.

Not Recommended for Direct Substitution: MURA210T3G

The MURA210T3G is a surface-mount SMA package variant. While it provides superior electrical performance (2 A current, 30 ns recovery time), the package type (DO-214AC/SMA) differs from the through-hole DO-204AL requirement. This part is suitable only for designs undergoing conversion to surface-mount technology.

Not Recommended: 1N4002G Series (Taiwan Semiconductor Corporation)

The 1N4002G A0G and 1N4002G B0G variants meet voltage and current requirements but employ standard recovery speed (>500ns) versus the fast recovery specification (≤500ns) of the original part. These parts are suitable only for applications where switching speed is not critical.

Frequently Asked Questions (FAQ)

Q: Can the EGP10B-E3/73 be used as a direct replacement for the EGP10B-M3/73?

A: Yes. The EGP10B-E3/73 is a direct replacement. Both parts share identical electrical specifications (100 V, 1 A, 950 mV forward voltage, 50 ns recovery time), the same DO-204AL (DO-41) axial package, and equivalent operating temperature range (-65°C to 150°C). The primary difference is product status: the original is obsolete while the E3/73 variant is active. No circuit modification is required.

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 stop conducting when the applied voltage reverses. Fast recovery diodes (≤500ns) are used in switching applications where rapid turn-off is critical. Standard recovery diodes (>500ns) are suitable for general-purpose rectification where switching speed is not a limiting factor. The EGP10B-M3/73 specifies fast recovery (50 ns), making it suitable for switching power supplies and high-frequency applications.

Q: Can the MUR210RLG replace the EGP10B-M3/73 in all applications?

A: The MUR210RLG is electrically compatible with superior performance margins. It provides 2 A current capacity (versus 1 A), identical 100 V voltage rating, and faster recovery time (30 ns versus 50 ns). The identical DO-204AL (DO-41) package ensures mechanical compatibility. However, the higher current rating and faster recovery time may affect circuit behavior in applications with tight timing constraints. Verification of circuit performance is necessary in timing-critical designs.

Q: Why is the MURA210T3G not recommended as a substitute?

A: The MURA210T3G uses a surface-mount SMA package (DO-214AC) instead of the through-hole DO-204AL (DO-41) axial package required by the original design. While the electrical specifications are superior (2 A, 30 ns recovery), the package incompatibility prevents direct substitution without PCB redesign. This part is suitable only for designs undergoing conversion to surface-mount assembly.

Q: What does ROHS3 compliance mean?

A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates that the component meets European Union regulations restricting the use of hazardous substances including lead, cadmium, mercury, and certain flame retardants. ROHS3-compliant parts are suitable for applications subject to environmental and regulatory requirements. The EGP10B-M3/73 and most recommended substitutes carry ROHS3 certification.

Q: Are there any temperature range differences between substitute parts?

A: Yes. The EGP10B-M3/73 operates from -65°C to 150°C. The RGP10B extends this to -65°C to 175°C, providing a 25°C higher maximum junction temperature. The MUR210RLG also reaches 175°C. The 1N4002G variants are limited to -55°C to 150°C, reducing the low-temperature operating range by 10°C. Application requirements determine whether these differences are significant.

Q: What is the significance of forward voltage (Vf) differences between substitute parts?

A: Forward voltage drop affects power dissipation and circuit efficiency. The EGP10B-M3/73 specifies 950 mV @ 1 A. Substitutes vary: EGP10B-E3/73 matches at 950 mV, while PR1002G-T and RGP10B are higher at 1.3 V, and 1N4002G variants are higher at 1 V. Higher forward voltage increases power loss as heat. In high-current or thermally constrained applications, forward voltage differences may require thermal analysis.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: Parts with identical electrical specifications and package types can be used interchangeably. The EGP10B-E3/73 and EGP10B are fully interchangeable. The MUR210RLG, while electrically superior, introduces different performance characteristics (higher current, faster recovery) that may affect circuit behavior. PR1002G-T and RGP10B have higher forward voltage and longer recovery times, making them suitable for non-critical applications. Design verification is necessary when switching between parts with different performance characteristics.

Q: What inventory considerations apply to these substitutes?

A: The EGP10B from Fairchild Semiconductor offers the highest inventory (66152 pcs), followed by RGP10B (17000 pcs) and MUR210RLG (3015 pcs). The EGP10B-E3/73 provides 2300 pcs. For long-term production requirements, parts with higher inventory provide greater supply security. For immediate availability, the Fairchild EGP10B is the optimal choice.

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