HER201G R0G Equivalent & Substitute Parts

Part Overview

The HER201G R0G is a general-purpose rectifier diode rated for 50 V DC reverse voltage and 2 A average rectified current, housed in a DO-204AC (DO-15) axial through-hole package. Manufactured by Taiwan Semiconductor Corporation, this component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent alternatives for ongoing design support and procurement. The part exhibits fast recovery characteristics with a reverse recovery time of 50 nanoseconds, making it suitable for standard rectification applications requiring moderate switching speeds.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 2 A
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	5	µA @ 50 V
Package / Case	DO-204AC, DO-15, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the HER201G R0G is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Direct Equivalents match all critical parameters: 50 V reverse voltage rating, 2 A average rectified current, fast recovery speed (≤500 ns), 50 ns reverse recovery time, and DO-204AC/DO-15 axial through-hole packaging. These parts are functionally interchangeable without circuit modification.

Similar Alternatives share the same voltage rating (50 V) and package form factor but differ in current rating (1.5 A instead of 2 A) or recovery characteristics. These parts are suitable only for applications where the lower current rating does not exceed circuit requirements.

Parametric Equivalents match the full electrical specification (50 V, 2 A, fast recovery, 50 ns trr) and package type but may originate from different manufacturers. These parts provide functional equivalence with identical performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr	Package	Product Status
HER201G R0G	Taiwan Semiconductor Corporation	50 V	2 A	1 V @ 2 A	50 ns	DO-204AC (DO-15)	Discontinued
HER201G	Taiwan Semiconductor Corporation	50 V	2 A	1 V @ 2 A	50 ns	DO-204AC (DO-15)	Active
EGP20A	Fairchild Semiconductor	50 V	2 A	950 mV @ 2 A	50 ns	DO-15	Active
UF200G_R2_00001	Panjit International Inc.	50 V	2 A	1 V @ 2 A	50 ns	DO-15	Active
1N5391GP-E3/54	Vishay General Semiconductor	50 V	1.5 A	1.4 V @ 1.5 A	2 µs	DO-204AC (DO-15)	Active
GP15A-E3/54	Vishay General Semiconductor	50 V	1.5 A	1.1 V @ 1.5 A	3.5 µs	DO-204AC (DO-15)	Active
RGP15A-E3/54	Vishay General Semiconductor	50 V	1.5 A	1.3 V @ 1.5 A	150 ns	DO-204AC (DO-15)	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

The HER201G (without suffix R0G) from Taiwan Semiconductor Corporation is the direct equivalent, offering identical electrical specifications and active product status. The EGP20A from Fairchild Semiconductor and UF200G_R2_00001 from Panjit International Inc. provide full parametric equivalence with 50 V rating, 2 A current capacity, 50 ns reverse recovery time, and fast recovery speed. All three alternatives are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original part.

Secondary Alternatives (Similar Parts):

The Vishay SUPERECTIFIER® series parts (1N5391GP-E3/54, GP15A-E3/54, and RGP15A-E3/54) maintain the 50 V voltage rating and DO-204AC/DO-15 package compatibility but are rated for 1.5 A average rectified current. These parts are suitable for applications where circuit current requirements do not exceed 1.5 A. The RGP15A-E3/54 offers the closest recovery time match at 150 ns among the 1.5 A options. All Vishay alternatives are ROHS3 compliant and REACH unaffected.

Compliance Considerations:

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original HER201G R0G specification. Moisture sensitivity level remains at MSL 1 (Unlimited) across all direct equivalents and parametric alternatives.

Frequently Asked Questions (FAQ)

Q: Can the EGP20A directly replace the HER201G R0G in all applications?

A: Yes. The EGP20A matches the critical electrical parameters: 50 V reverse voltage, 2 A average rectified current, 50 ns reverse recovery time, and fast recovery speed. The forward voltage is slightly lower (950 mV versus 1 V at 2 A), which is favorable for efficiency. Both parts use DO-15 axial through-hole packaging and are mechanically and electrically interchangeable.

Q: What is the difference between the HER201G R0G and the HER201G?

A: The HER201G R0G is discontinued at DiGi Electronics, while the HER201G maintains active product status. Both parts are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications. The HER201G is the recommended substitute for ongoing procurement.

Q: Can I use the 1N5391GP-E3/54 as a substitute?

A: The 1N5391GP-E3/54 is suitable only if your circuit operates at 1.5 A or below. This part is rated for 1.5 A average rectified current, compared to the 2 A rating of the HER201G R0G. The reverse voltage (50 V) and package (DO-204AC/DO-15) are compatible. Recovery time differs significantly (2 µs versus 50 ns), which may affect switching performance in high-frequency applications.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use DO-15 axial through-hole packaging, which is mechanically compatible with the original HER201G R0G. The supplier device package designation may vary (DO-204AC versus DO-15), but these refer to the same physical form factor and are interchangeable in through-hole PCB applications.

Q: What compliance certifications apply to the substitute parts?

A: All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the HER201G R0G. Moisture sensitivity level is MSL 1 (Unlimited) for all direct equivalents and parametric alternatives, indicating no moisture-related handling restrictions.

Q: Which substitute offers the best forward voltage performance?

A: The EGP20A from Fairchild Semiconductor offers the lowest forward voltage at 950 mV @ 2 A, compared to 1 V @ 2 A for the HER201G R0G and UF200G_R2_00001. This lower forward drop reduces power dissipation in rectification circuits.

Q: Can I use the UF200G_R2_00001 in place of the HER201G R0G?

A: Yes. The UF200G_R2_00001 from Panjit International Inc. is a parametric equivalent with identical 50 V rating, 2 A current capacity, 1 V forward voltage @ 2 A, and 50 ns reverse recovery time. The part is ROHS3 compliant and REACH unaffected. Inventory availability is higher (1045 Pcs) compared to the original part.

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