Equivalent & Substitute Parts for 2A02G-T

Part Overview

The 2A02G-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. Substitute parts listed below maintain electrical compatibility while offering active product status and improved availability.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-65°C ~ 175°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 2A02G-T is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 2 A minimum
Forward voltage characteristics within acceptable operating range
Reverse leakage current specifications

Mechanical Compatibility Requirements:

Mounting Type: Through Hole
Package / Case: DO-204AC (DO-15) or SOD-57 axial configurations
Physical form factor compatibility with existing PCB layouts

Regulatory & Compliance Requirements:

RoHS3 Compliance
REACH Status alignment
Operating temperature range consideration

Substitute parts are grouped into two categories: (1) Direct replacements maintaining DO-15/DO-204AC packaging with standard or fast recovery characteristics, and (2) Alternative technology options (avalanche diodes) in SOD-57 packaging offering enhanced performance characteristics while maintaining electrical ratings.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Package	Temp Range	Product Status
2A02G-T	Diodes Incorporated	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns	DO-15	-65°C ~ 175°C	Obsolete
2A02G A0G	Taiwan Semiconductor Corporation	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns	DO-204AC (DO-15)	-55°C ~ 150°C	Active
BYV27-100-TAP	Vishay General Semiconductor	100 V	2 A	1.07 V @ 3 A	Fast Recovery ≤500ns, trr 25ns	SOD-57	-55°C ~ 175°C	Active
BYV27-100-TR	Vishay General Semiconductor	100 V	2 A	1.07 V @ 3 A	Fast Recovery ≤500ns, trr 25ns	SOD-57	-55°C ~ 175°C	Active
EGP20B	Fairchild Semiconductor	100 V	2 A	950 mV @ 2 A	Fast Recovery ≤500ns, trr 50ns	DO-15	-65°C ~ 150°C	Active
EGP20B-E3/54	Vishay General Semiconductor	100 V	2 A	950 mV @ 2 A	Fast Recovery ≤500ns, trr 50ns	DO-204AC (DO-15)	-65°C ~ 150°C	Active
GPP20B-E3/54	Vishay General Semiconductor	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns	DO-204AC (DO-15)	-55°C ~ 150°C	Active
HER202G A0G	Taiwan Semiconductor Corporation	100 V	2 A	1 V @ 2 A	Fast Recovery ≤500ns, trr 50ns	DO-204AC (DO-15)	-55°C ~ 150°C	Active
SBYV27-100-E3/73	Vishay General Semiconductor	100 V	2 A	1.07 V @ 3 A	Fast Recovery ≤500ns, trr 15ns	DO-204AC (DO-15)	-55°C ~ 150°C	Active
UG2B-E3/54	Vishay General Semiconductor	100 V	2 A	950 mV @ 2 A	Fast Recovery ≤500ns, trr 25ns	DO-204AC (DO-15)	-55°C ~ 150°C	Active

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

The 2A02G A0G (Taiwan Semiconductor Corporation) serves as the primary equivalent substitute. This part maintains identical electrical ratings (100 V, 2 A, 1.1 V forward voltage) and package configuration (DO-204AC/DO-15), with active product status ensuring long-term availability. Operating temperature range is reduced to -55°C ~ 150°C compared to the original -65°C ~ 175°C specification.

Secondary Recommendations for DO-15/DO-204AC Packaging:

EGP20B-E3/54 (Vishay): Offers improved forward voltage (950 mV @ 2 A) and fast recovery characteristics (trr 50ns). Maintains -65°C upper temperature rating. Suitable for applications requiring lower forward voltage dissipation.
HER202G A0G (Taiwan Semiconductor Corporation): Provides fast recovery performance (trr 50ns) with optimized forward voltage (1 V @ 2 A). Active status with established supply chain.
UG2B-E3/54 (Vishay): Fast recovery diode (trr 25ns) with 950 mV forward voltage. Recommended for high-frequency switching applications.
SBYV27-100-E3/73 (Vishay): Ultra-fast recovery (trr 15ns) with fast recovery characteristics. Optimal for demanding switching applications requiring minimal reverse recovery time.
GPP20B-E3/54 (Vishay): Maintains standard recovery characteristics matching the original part, with identical forward voltage specification (1.1 V @ 2 A).

Alternative Technology Option (SOD-57 Packaging):

BYV27-100-TR and BYV27-100-TAP (Vishay): Avalanche-rated diodes offering fast recovery (trr 25ns) and superior reverse voltage protection. SOD-57 package requires PCB layout modification. Highest inventory availability (21,905 units for TR variant).

Compliance Considerations:

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component. Selection should account for operating temperature requirements, with most substitutes limited to -55°C minimum junction temperature compared to the original -65°C specification.

Frequently Asked Questions (FAQ)

Q: Can the 2A02G-T be directly replaced with any of the listed substitutes?

A: Direct replacement depends on package compatibility and operating temperature requirements. The 2A02G A0G provides the closest electrical and mechanical match for DO-15 applications. SOD-57 packaged alternatives (BYV27 series) require PCB layout modification and are not direct drop-in replacements.

Q: What is the difference between standard recovery and fast recovery diodes in these substitutes?

A: Recovery speed is determined by reverse recovery time (trr). Standard recovery diodes (>500ns) are suitable for low-frequency rectification. Fast recovery diodes (≤500ns, typically 15-50ns) minimize switching losses and are required for high-frequency applications. The original 2A02G-T specifies standard recovery; substitutes offering fast recovery provide improved performance in switching applications.

Q: Are there temperature range limitations when substituting the 2A02G-T?

A: Yes. The original part operates from -65°C to 175°C. Most active substitutes are limited to -55°C minimum and -150°C maximum junction temperature. Applications requiring the full -65°C to 175°C range should select EGP20B (Fairchild) or EGP20B-E3/54 (Vishay), which maintain -65°C lower limit.

Q: What is the significance of forward voltage differences among substitutes?

A: Forward voltage (Vf) affects power dissipation and thermal performance. Lower Vf values (950 mV in EGP20B, UG2B-E3/54) reduce heat generation compared to higher values (1.1 V in 2A02G-T, GPP20B-E3/54). Selection depends on thermal budget and efficiency requirements of the application.

Q: Can SOD-57 packaged diodes (BYV27 series) be used as direct replacements?

A: No. SOD-57 is a different physical package than DO-15/DO-204AC. While electrical ratings are compatible, SOD-57 components require different PCB footprints and cannot be used in existing DO-15 layouts without board redesign. These are suitable only for new designs or board revisions.

Q: Which substitute offers the best availability?

A: BYV27-100-TR (Vishay) has the highest inventory at 21,905 units. For DO-15/DO-204AC packaging, GPP20B-E3/54 (8,652 units) and EGP20B (5,300 units) offer strong availability.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance, ensuring regulatory alignment with the original 2A02G-T component.

Q: What is the primary reason for substituting the 2A02G-T?

A: The 2A02G-T is classified as obsolete. Substitution is necessary to ensure continued design support, procurement availability, and long-term supply chain reliability. Active alternatives provide equivalent or superior performance with guaranteed future availability.

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