Equivalent & Substitute Parts for RL203GP-AP

Part Overview

The RL203GP-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary to support existing applications, legacy system maintenance, and design transitions to active product alternatives.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 2 A
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-204AC, DO-15, Axial	-
Mounting Type	Through Hole	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the RL203GP-AP is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a maximum DC reverse voltage (Vr) of 200 V or greater to ensure safe operation in the original circuit.

Current Rating: The average rectified current (Io) must be sufficient to handle the 2 A requirement. Parts rated at 2 A provide direct equivalence; parts rated below 2 A (such as 1.5 A) operate at reduced current capacity and are suitable only for applications with lower current demands.

Package and Mounting: All substitute parts must use the DO-15 (DO-204AC) axial through-hole package to ensure mechanical and electrical compatibility with existing PCB layouts and solder connections.

Forward Voltage: Forward voltage drop (Vf) at rated current should remain within acceptable limits to prevent excessive heat dissipation and maintain circuit performance.

Recovery Speed: Recovery characteristics (standard or fast) determine switching behavior. Standard recovery diodes (>500 ns) are interchangeable with other standard recovery types; fast recovery diodes (≤500 ns) represent an alternative with improved switching performance.

Temperature Range: Operating temperature range must encompass the application's thermal requirements. The RL203GP-AP operates from -55°C to 150°C; substitute parts with equal or wider ranges are acceptable.

Compliance and Status: Active product status and ROHS3 compliance ensure long-term availability and regulatory conformance for new designs and ongoing production.

Parameter Comparison

Parameter	RL203GP-AP (Main)	PR1503-T	2A03G A0G	2A03GHA0G
Manufacturer	Micro Commercial Co	Diodes Incorporated	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	2 A	1.5 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 2 A	1.2 V @ 1.5 A	1 V @ 2 A	1 V @ 2 A
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V
Speed	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery ≤500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Operating Temperature - Junction	-55 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 150°C
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	-	-	-	Automotive (AEC-Q101)

Engineering Selection Recommendations

For Direct Equivalence (Full Current Capacity):

The 2A03G A0G and 2A03GHA0G from Taiwan Semiconductor Corporation provide parametric equivalence to the RL203GP-AP. Both parts maintain identical voltage ratings (200 V), current ratings (2 A), forward voltage characteristics (1 V @ 2 A), and operating temperature range (-55°C to 150°C). Both are active products with ROHS3 compliance, ensuring long-term availability and regulatory conformance. The 2A03GHA0G variant includes automotive-grade qualification (AEC-Q101), suitable for applications requiring automotive reliability standards.

For Reduced Current Applications:

The PR1503-T from Diodes Incorporated is suitable for applications where current demand does not exceed 1.5 A. This part maintains the 200 V voltage rating and DO-15 package compatibility. The PR1503-T features fast recovery characteristics (≤500 ns), which may improve switching performance in certain circuit topologies compared to the standard recovery speed of the RL203GP-AP. The PR1503-T is an active product with ROHS3 compliance and an extended temperature range (-65°C to 150°C).

Product Status Consideration:

All three substitute parts carry "Active" product status, ensuring continued manufacturing support and availability. The RL203GP-AP is designated "Not For New Designs," making transition to active alternatives necessary for ongoing production and new applications.

Frequently Asked Questions (FAQ)

Q: Can the PR1503-T replace the RL203GP-AP in all applications?

A: The PR1503-T is suitable only for applications where the average rectified current does not exceed 1.5 A. The PR1503-T is rated for 1.5 A, compared to the RL203GP-AP's 2 A rating. Both parts share identical 200 V voltage ratings and DO-15 package specifications. If the circuit requires the full 2 A capacity, the PR1503-T is not appropriate.

Q: What is the difference between the 2A03G A0G and 2A03GHA0G?

A: Both parts are parametrically identical in voltage, current, forward voltage, and temperature specifications. The 2A03GHA0G includes automotive-grade qualification (AEC-Q101), making it suitable for automotive applications requiring enhanced reliability and qualification documentation. The 2A03G A0G is suitable for general industrial and commercial applications.

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

A: Yes. The RL203GP-AP, PR1503-T, 2A03G A0G, and 2A03GHA0G all use the DO-15 (DO-204AC) axial through-hole package. This ensures mechanical and electrical compatibility with existing PCB layouts without requiring board redesign.

Q: Does the fast recovery speed of the PR1503-T affect circuit compatibility?

A: The PR1503-T features fast recovery (≤500 ns) compared to the standard recovery (>500 ns) of the RL203GP-AP. Fast recovery diodes exhibit lower reverse recovery time, which can reduce switching losses and improve efficiency in high-frequency applications. However, in low-frequency or DC rectification circuits, this difference has minimal impact on circuit operation.

Q: Are all substitute parts RoHS compliant?

A: Yes. The RL203GP-AP, PR1503-T, 2A03G A0G, and 2A03GHA0G are all ROHS3 compliant, meeting environmental and regulatory requirements for electronic components.

Q: What is the temperature operating range difference between the PR1503-T and the RL203GP-AP?

A: The PR1503-T operates from -65°C to 150°C, providing a 10°C lower minimum temperature limit compared to the RL203GP-AP (-55°C to 150°C). Both parts share the same maximum temperature of 150°C. The PR1503-T's extended lower temperature range provides additional margin for cold-environment applications.

Q: Can I use the 2A03GHA0G in non-automotive applications?

A: Yes. The 2A03GHA0G is qualified to automotive standards (AEC-Q101) but is not restricted to automotive use. It can be used in any application requiring a 200 V, 2 A general-purpose rectifier diode. The automotive qualification represents an additional quality assurance level and does not limit application scope.

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