UG2002-T Equivalent & Substitute Parts

Part Overview

The UG2002-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 component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a junction temperature range of -55°C to 150°C and complies 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	1 V @ 2 A	V @ 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-204AC, DO-15, Axial	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the UG2002-T is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 2 A minimum
Speed classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: -55°C minimum to 150°C maximum

Mechanical Compatibility Criteria:

Mounting Type: Through Hole
Package / Case: DO-15 or DO-204AC (axial configuration)

Substitute parts are grouped into two categories:

Manufacturer Recommended Substitutes: Parts that meet or exceed all electrical parameters and maintain identical or superior performance characteristics while offering active product status and improved availability.

Parametric Equivalents: Parts that match the core electrical specifications and package requirements, providing functional equivalence for direct replacement in circuit applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V @ A]	trr [ns]	Ir @ Vr [µA @ V]	Package	Product Status	Temp Range [°C]
UG2002-T	Diodes Incorporated	100	2	1 @ 2	50	5 @ 100	DO-15	Obsolete	-55 to 150
BYV27-100-TAP	Vishay General Semiconductor	100	2	1.07 @ 3	25	1 @ 100	SOD-57	Active	-55 to 175
BYV27-100-TR	Vishay General Semiconductor	100	2	1.07 @ 3	25	1 @ 100	SOD-57	Active	-55 to 175
EGP20B	Fairchild Semiconductor	100	2	0.95 @ 2	50	5 @ 100	DO-15	Active	-65 to 150
EGP20B-E3/54	Vishay General Semiconductor	100	2	0.95 @ 2	50	5 @ 100	DO-204AC (DO-15)	Active	-65 to 150
SBYV27-100-E3/54	Vishay General Semiconductor	100	2	1.07 @ 3	15	5 @ 100	DO-204AC (DO-15)	Active	-55 to 150
HER202G	Taiwan Semiconductor Corporation	100	2	1 @ 2	50	5 @ 100	DO-204AC (DO-15)	Active	-55 to 150
UF201G_R2_00001	Panjit International Inc.	100	2	1 @ 2	50	1 @ 100	DO-15	Active	-55 to 150

Engineering Selection Recommendations

For Direct Package Compatibility (DO-15 Axial):

Select EGP20B or UF201G_R2_00001 when maintaining the original DO-15 package footprint is required. Both parts are active products with full RoHS3 compliance. EGP20B offers lower forward voltage (0.95 V @ 2 A) compared to the original specification (1 V @ 2 A), providing improved efficiency. UF201G_R2_00001 matches the original forward voltage specification exactly and provides superior reverse leakage characteristics (1 µA @ 100 V versus 5 µA @ 100 V).

For Enhanced Performance with Package Flexibility (DO-204AC):

Select EGP20B-E3/54 or SBYV27-100-E3/54 when circuit board layout permits the DO-204AC package variant. Both maintain electrical compatibility with the original part. SBYV27-100-E3/54 offers the fastest reverse recovery time (15 ns) and lowest capacitance (15 pF @ 4 V, 1 MHz), making it suitable for high-frequency switching applications. EGP20B-E3/54 provides lower forward voltage (0.95 V @ 2 A) for reduced power dissipation.

For Superior Temperature Range and Avalanche Technology:

Select BYV27-100-TR or BYV27-100-TAP when extended operating temperature range (-55°C to 175°C) and avalanche diode technology are beneficial. Both parts feature faster reverse recovery time (25 ns) and lower reverse leakage (1 µA @ 100 V). BYV27-100-TR offers significantly higher inventory availability (21,905 pcs) for volume production. Package is SOD-57 (axial through-hole), compatible with standard DO-15 footprints.

For Parametric Equivalence with Active Status:

Select HER202G when an exact electrical match with active product status is required. This part replicates the original UG2002-T specifications precisely, including forward voltage (1 V @ 2 A), reverse recovery time (50 ns), and reverse leakage (5 µA @ 100 V), while offering active product status and RoHS3 compliance.

All recommended substitutes maintain RoHS3 compliance and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can BYV27-100-TR and BYV27-100-TAP be used interchangeably with UG2002-T?

A: Yes, both BYV27 variants meet the electrical requirements (100 V, 2 A, fast recovery ≤ 500 ns). The primary difference is packaging: BYV27 parts use SOD-57 (axial) while UG2002-T uses DO-15. Both are through-hole axial packages compatible with standard PCB layouts. BYV27-100-TR is available in cut tape (CT) packaging with 21,905 pcs in stock, while BYV27-100-TAP is available in cut tape with 1,119 pcs in stock.

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

A: Both parts are electrically identical (100 V, 2 A, 0.95 V @ 2 A forward voltage, 50 ns reverse recovery time). The difference is packaging: EGP20B is supplied in bulk, while EGP20B-E3/54 is supplied in cut tape (CT). EGP20B-E3/54 is the active product variant with 3,300 pcs in stock and RoHS3 compliance. EGP20B is manufactured by Fairchild Semiconductor with 5,300 pcs available.

Q: Why does SBYV27-100-E3/54 have a faster reverse recovery time (15 ns) than the original UG2002-T (50 ns)?

A: SBYV27-100-E3/54 is a standard technology diode optimized for faster switching performance. The 15 ns reverse recovery time is a superior characteristic that reduces switching losses in high-frequency applications. This faster recovery does not compromise compatibility; it represents an improvement over the original specification while maintaining all other electrical parameters (100 V, 2 A, fast recovery classification).

Q: Can I use HER202G as a direct replacement for UG2002-T?

A: Yes. HER202G is a parametric equivalent that matches all key electrical specifications: 100 V reverse voltage, 2 A average rectified current, 1 V forward voltage @ 2 A, 50 ns reverse recovery time, and 5 µA reverse leakage @ 100 V. The package is DO-204AC (DO-15), which is mechanically compatible with the original through-hole axial footprint. HER202G is an active product with RoHS3 compliance.

Q: What is the advantage of UF201G_R2_00001 over EGP20B?

A: UF201G_R2_00001 offers superior reverse leakage characteristics (1 µA @ 100 V versus 5 µA @ 100 V in EGP20B), resulting in lower standby current consumption. Both maintain identical forward voltage (1 V @ 2 A) and reverse recovery time (50 ns). UF201G_R2_00001 is supplied in tape & reel (TR) packaging with 792 pcs in stock, while EGP20B is supplied in bulk with 5,300 pcs available.

Q: Are all substitute parts RoHS3 compliant?

A: All manufacturer-recommended and parametric equivalent parts listed are RoHS3 compliant. Compliance status is verified in the provided specifications for each part. All parts also carry EAR99 export classification consistent with the original UG2002-T.

Q: Which substitute part has the lowest forward voltage drop?

A: EGP20B and EGP20B-E3/54 both feature the lowest forward voltage at 0.95 V @ 2 A, compared to 1 V @ 2 A in the original UG2002-T. This 50 mV reduction per part translates to lower power dissipation in applications with continuous forward current.

Q: Can I use parts with different operating temperature ranges?

A: Substitution is limited to the operating temperature range of your application. If your circuit operates within -55°C to 150°C, all listed substitutes are compatible. If your application requires -65°C operation, select EGP20B or EGP20B-E3/54 (rated to -65°C). If your application requires operation above 150°C, select BYV27-100-TR or BYV27-100-TAP (rated to 175°C).

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