EGP31B-E3/C Equivalent & Substitute Parts

Part Overview

The EGP31B-E3/C is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, part of the SUPERECTIFIER® series. This through-hole component is rated for 100 V DC reverse voltage with 3 A average rectified current and features fast recovery characteristics with a 50 ns reverse recovery time. The device is housed in a DO-201AD axial package and is currently in active production status with RoHS3 compliance. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative manufacturer selections.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	mV
Reverse Recovery Time (trr)	50	ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	1	µA @ 100 V
Capacitance @ Vr, F	117	pF @ 4V, 1MHz
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-65 to 175	°C

Substitute Part Grouping Explanation

Substitution of the EGP31B-E3/C is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 950 mV @ 3 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 50 ns

Mechanical Equivalence Criteria:

Package / Case: DO-201AD, Axial
Mounting Type: Through Hole

Compliance Criteria:

Product Status: Active
RoHS Status: ROHS3 Compliant

The EGP30B meets all electrical and mechanical equivalence criteria and maintains active product status with appropriate compliance certifications, qualifying it as a direct substitute for the EGP31B-E3/C.

Parameter Comparison

Parameter	EGP31B-E3/C (Vishay)	EGP30B (Fairchild)	Match Status
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	Equivalent
Current - Average Rectified (Io)	3 A	3 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	950 mV @ 3 A	Equivalent
Reverse Recovery Time (trr)	50 ns	50 ns	Equivalent
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Current - Reverse Leakage @ Vr	1 µA @ 100 V	5 µA @ 100 V	Within Tolerance
Capacitance @ Vr, F	117 pF @ 4V, 1MHz	95 pF @ 4V, 1MHz	Within Tolerance
Package / Case	DO-201AD, Axial	DO-201AD, Axial	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Operating Temperature - Junction	-65 to 175 °C	-65 to 150 °C	Within Tolerance
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

The EGP30B manufactured by Fairchild Semiconductor is a qualified substitute for the EGP31B-E3/C. Both devices maintain active product status and share identical electrical ratings for voltage, current, and switching characteristics. The EGP30B exhibits slightly higher reverse leakage current (5 µA versus 1 µA at 100 V) and lower junction capacitance (95 pF versus 117 pF), both of which remain within acceptable tolerance ranges for general-purpose rectification applications. The EGP30B operates across a junction temperature range of -65°C to 150°C, which is 25°C lower than the EGP31B-E3/C maximum of 175°C; this difference must be evaluated against specific application thermal requirements. Both devices are housed in the DO-201AD axial package and are suitable for through-hole mounting. Compliance certifications align with current regulatory requirements, supporting direct substitution in active designs.

Frequently Asked Questions (FAQ)

Q: Can the EGP30B be used as a direct replacement for the EGP31B-E3/C in existing designs?

A: Yes. Both devices share identical voltage ratings (100 V), current ratings (3 A), forward voltage drop (950 mV @ 3 A), and switching characteristics (50 ns reverse recovery time). The DO-201AD axial package and through-hole mounting are identical. Substitution is valid provided the application operating temperature does not exceed 150°C.

Q: What is the difference in reverse leakage current between these parts?

A: The EGP31B-E3/C specifies 1 µA reverse leakage at 100 V, while the EGP30B specifies 5 µA at the same conditions. This difference is within acceptable tolerance for general-purpose rectification and does not affect functional equivalence for standard applications.

Q: Are there packaging differences between the EGP31B-E3/C and EGP30B?

A: Both devices use the DO-201AD axial package with through-hole mounting. The EGP31B-E3/C is supplied in Tape & Reel (TR) packaging, while the EGP30B is supplied in Bulk packaging. The component form factor and PCB mounting interface are identical.

Q: What is the maximum junction temperature difference between these parts?

A: The EGP31B-E3/C operates to 175°C junction temperature, while the EGP30B operates to 150°C. Applications requiring sustained operation above 150°C must use the EGP31B-E3/C. For applications with maximum junction temperatures at or below 150°C, both parts are equivalent.

Q: Do both parts meet current compliance requirements?

A: Yes. The EGP31B-E3/C is RoHS3 Compliant and REACH Unaffected. The EGP30B maintains equivalent compliance status, supporting use in regulated applications.

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