Equivalent & Substitute Parts for Diodes Incorporated 2A02-T

Part Overview

The Diodes Incorporated 2A02-T is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole axial package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design and procurement requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging options.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	V
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the 2A02-T are selected based on strict electrical parameter matching within the following criteria:

Primary Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 2 A
Mounting Type: Through Hole
Package / Case: DO-15 or DO-204AC (axial)

Secondary Compatibility Factors:

Forward voltage (Vf) within acceptable operating range
Reverse leakage current at rated voltage
Operating temperature range encompassing or exceeding -65°C to 150°C
RoHS3 compliance and regulatory alignment

Substitute parts are grouped into two technology categories: Standard recovery diodes (EGP20B, EGP20B-E3/54, UG2B-E3/54) and fast/avalanche recovery diodes (BYV27-100-TR, BYV27-100-TAP). All listed substitutes meet the core electrical requirements and are available in active product status.

Parameter Comparison

Parameter	2A02-T (Diodes Inc.)	EGP20B (Fairchild)	EGP20B-E3/54 (Vishay)	UG2B-E3/54 (Vishay)	BYV27-100-TR (Vishay)	BYV27-100-TAP (Vishay)
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	950 mV @ 2 A	950 mV @ 2 A	950 mV @ 2 A	1.07 V @ 3 A	1.07 V @ 3 A
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	1 µA @ 100 V	1 µA @ 100 V
Speed Classification	Standard Recovery >500ns	Fast Recovery ≤500ns	Fast Recovery ≤500ns	Fast Recovery ≤500ns	Fast Recovery ≤500ns	Fast Recovery ≤500ns
Reverse Recovery Time (trr)	—	50 ns	50 ns	25 ns	25 ns	25 ns
Operating Temperature - Junction	-65 to 150°C	-65 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 175°C
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	SOD-57, Axial	SOD-57, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Package Equivalents (DO-15/DO-204AC):

EGP20B-E3/54 and UG2B-E3/54 provide direct mechanical and electrical substitution for the 2A02-T. Both parts maintain the DO-15 axial package format, identical voltage and current ratings, and equivalent reverse leakage specifications. EGP20B-E3/54 is designated as SUPERECTIFIER® series and carries active product status with ROHS3 compliance. UG2B-E3/54 offers improved reverse recovery time (25 ns versus 50 ns) while maintaining the same forward voltage profile. Both are available in cut tape packaging.

EGP20B (Fairchild, bulk packaging) provides functional equivalence with identical electrical parameters to EGP20B-E3/54 but differs in packaging format and supplier designation.

Alternative Package Substitutes (SOD-57):

BYV27-100-TR and BYV27-100-TAP are avalanche technology diodes that meet all core electrical requirements (100 V, 2 A) but employ SOD-57 axial packaging instead of DO-15. These parts feature superior reverse recovery characteristics (25 ns) and lower reverse leakage (1 µA). BYV27-100-TR is available in significantly higher inventory (21,905 pcs) compared to BYV27-100-TAP (1,119 pcs). Both maintain ROHS3 compliance and active product status. PCB layout modifications are required to accommodate SOD-57 package geometry.

Compliance and Regulatory Status:

All substitute parts carry ROHS3 compliance certification. EGP20B-E3/54, UG2B-E3/54, BYV27-100-TR, and BYV27-100-TAP are designated as REACH Unaffected. All parts share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications with the original 2A02-T.

Frequently Asked Questions (FAQ)

Q: Can EGP20B-E3/54 or UG2B-E3/54 be used as direct replacements for the 2A02-T without PCB modifications?

A: Yes. Both parts maintain identical DO-15 axial package geometry, through-hole mounting, and pin spacing. No PCB layout changes are required for mechanical or electrical integration.

Q: What is the primary difference between EGP20B-E3/54 and UG2B-E3/54?

A: Both parts meet identical voltage (100 V) and current (2 A) specifications. UG2B-E3/54 provides faster reverse recovery time (25 ns versus 50 ns) and operates across a slightly narrower lower temperature range (-55°C versus -65°C minimum). Forward voltage and reverse leakage are equivalent.

Q: Why do BYV27-100-TR and BYV27-100-TAP use SOD-57 packaging instead of DO-15?

A: BYV27 series diodes employ SOD-57 axial packaging as the standard supplier device package. While electrically compatible with 2A02-T specifications, PCB footprint modifications are necessary to accommodate the different package geometry.

Q: Are the BYV27-100-TR and BYV27-100-TAP avalanche diodes suitable for general-purpose rectification applications?

A: Yes. Avalanche technology provides enhanced reverse voltage protection and faster recovery characteristics. Both parts meet the 100 V, 2 A core requirements and are suitable for general-purpose rectification with improved transient performance.

Q: What is the inventory availability difference between BYV27-100-TR and BYV27-100-TAP?

A: BYV27-100-TR is available in significantly higher quantity (21,905 pcs) compared to BYV27-100-TAP (1,119 pcs). Both are active products with identical electrical specifications.

Q: Do all substitute parts maintain the same operating temperature range as the 2A02-T?

A: EGP20B and EGP20B-E3/54 maintain the identical -65°C to 150°C range. UG2B-E3/54, BYV27-100-TR, and BYV27-100-TAP operate at -55°C minimum (5°C higher than original), with BYV27 series extending to 175°C maximum. Applications requiring -65°C operation require EGP20B or EGP20B-E3/54.

Q: Are all substitute parts RoHS3 compliant?

A: EGP20B-E3/54, UG2B-E3/54, BYV27-100-TR, and BYV27-100-TAP are all ROHS3 compliant. EGP20B (Fairchild, bulk) does not specify RoHS status in provided documentation.

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