PR1503G-T Equivalent & Substitute Parts

Part Overview

The PR1503G-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 200 V DC reverse voltage and 1.5 A average rectified current in a DO-15 through-hole package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and production continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter ranges for the application.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A	V
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—
Operating Temperature - Junction	-65°C ~ 150°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the PR1503G-T is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 1.5 A minimum
Mounting Type: Through Hole
Package / Case: DO-204AC (DO-15) or equivalent axial configuration

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Up to 1.4 V @ 1.5 A
Reverse Recovery Time (trr): Up to 3.5 µs (standard recovery acceptable)
Current - Reverse Leakage @ Vr: Up to 5 µA @ 200 V
Operating Temperature - Junction: Minimum -50°C to maximum 150°C

Compliance Requirements:

RoHS3 Compliant
ECCN: EAR99
HTSUS: 8541.10.0080

Substitute parts are grouped into two categories: direct electrical equivalents with identical or superior performance characteristics, and functional alternatives that meet application requirements within specified parameter tolerances.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Speed	Package	Tj (Max) [°C]	Status
PR1503G-T	Diodes Incorporated	200	1.5	1.3 @ 1.5	150	5 @ 200	Fast Recovery ≤ 500ns	DO-15	150	Obsolete
RGP15D-E3/54	Vishay General Semiconductor	200	1.5	1.3 @ 1.5	150	5 @ 200	Fast Recovery ≤ 500ns	DO-204AC (DO-15)	175	Active
1N5393-E3/73	Vishay General Semiconductor	200	1.5	1.4 @ 1.5	2000	5 @ 200	Standard Recovery >500ns	DO-204AL (DO-41)	150	Active
1N5393GP-E3/54	Vishay General Semiconductor	200	1.5	1.4 @ 1.5	2000	5 @ 200	Standard Recovery >500ns	DO-204AC (DO-15)	175	Active
FR153GP-AP	Micro Commercial Co	200	1.5	1.3 @ 1.5	150	5 @ 200	Fast Recovery ≤ 500ns	DO-15	150	Active
GP15D-E3/54	Vishay General Semiconductor	200	1.5	1.1 @ 1.5	3500	5 @ 200	Standard Recovery >500ns	DO-204AC (DO-15)	175	Active
HER203G B0G	Taiwan Semiconductor Corporation	200	2.0	1.0 @ 2.0	50	5 @ 200	Fast Recovery ≤ 500ns	DO-204AC (DO-15)	150	Active
STTH1R02Q	STMicroelectronics	200	1.5	1.0 @ 1.5	30	3 @ 200	Fast Recovery ≤ 500ns	DO-15	175	Active
STTH1R02QRL	STMicroelectronics	200	1.5	1.0 @ 1.5	30	3 @ 200	Fast Recovery ≤ 500ns	DO-15	175	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (Identical Performance):

RGP15D-E3/54 (Vishay General Semiconductor) and FR153GP-AP (Micro Commercial Co) provide direct electrical equivalence to the PR1503G-T with matching voltage, current, forward voltage drop, and recovery time specifications. Both parts are active products with ROHS3 compliance and EAR99 classification. RGP15D-E3/54 offers extended junction temperature rating to 175°C compared to the original 150°C maximum.

Fast Recovery Alternatives (Superior Performance):

STTH1R02Q and STTH1R02QRL (STMicroelectronics) deliver superior fast recovery characteristics with 30 ns reverse recovery time versus the original 150 ns, combined with lower forward voltage drop (1.0 V @ 1.5 A) and reduced reverse leakage current (3 µA @ 200 V). Both maintain 200 V reverse voltage and 1.5 A current ratings with extended temperature capability to 175°C. These parts are suitable for applications requiring improved switching performance.

Standard Recovery Alternatives (Functional Substitutes):

1N5393GP-E3/54 and GP15D-E3/54 (Vishay General Semiconductor) provide functional substitution with standard recovery characteristics (2000 ns and 3500 ns respectively). These parts maintain 200 V reverse voltage and 1.5 A current ratings with extended junction temperature to 175°C. GP15D-E3/54 offers superior forward voltage performance at 1.1 V @ 1.5 A. These alternatives are suitable for non-critical switching applications where recovery speed is not a limiting factor.

Higher Current Alternative (Uprated Substitute):

HER203G B0G (Taiwan Semiconductor Corporation) provides a 2 A rated alternative in the same DO-15 package with 200 V reverse voltage rating. This part offers superior fast recovery characteristics (50 ns) and lower forward voltage drop (1.0 V @ 2.0 A). Selection of this uprated device is appropriate for applications requiring additional current margin or improved thermal performance.

Packaging Consideration:

1N5393-E3/73 (Vishay General Semiconductor) is available in DO-204AL (DO-41) package configuration, which differs from the original DO-15 axial package. This part is suitable only for applications where package form factor change is acceptable.

All recommended substitutes maintain ROHS3 compliance, EAR99 export classification, and HTSUS code 8541.10.0080 consistency with the original part.

Frequently Asked Questions (FAQ)

Q: Can RGP15D-E3/54 directly replace PR1503G-T in existing designs?

A: Yes. RGP15D-E3/54 provides direct electrical equivalence with identical voltage (200 V), current (1.5 A), forward voltage drop (1.3 V @ 1.5 A), and recovery time (150 ns) specifications. Both parts use DO-15 through-hole axial packaging. The extended junction temperature rating (175°C vs. 150°C) provides additional thermal margin.

Q: What is the difference between fast recovery and standard recovery diodes in this product group?

A: Fast recovery diodes (PR1503G-T, RGP15D-E3/54, FR153GP-AP, STTH1R02Q, STTH1R02QRL, HER203G B0G) have reverse recovery times ≤ 500 ns and are suitable for switching applications requiring rapid diode turn-off. Standard recovery diodes (1N5393-E3/73, 1N5393GP-E3/54, GP15D-E3/54) have reverse recovery times > 500 ns and are appropriate for lower-frequency rectification applications where switching speed is not critical.

Q: Are STTH1R02Q and STTH1R02QRL interchangeable?

A: Yes. Both parts are manufactured by STMicroelectronics with identical electrical specifications: 200 V reverse voltage, 1.5 A current rating, 1.0 V forward voltage drop @ 1.5 A, and 30 ns reverse recovery time. Both use DO-15 packaging and support junction temperatures to 175°C. The difference is in packaging format (tape and reel configuration), not electrical performance.

Q: Can HER203G B0G be used as a direct replacement for PR1503G-T?

A: HER203G B0G is a functional substitute, not a direct replacement. While both parts share 200 V reverse voltage rating and DO-15 packaging, HER203G B0G is rated for 2 A average rectified current versus 1.5 A for PR1503G-T. This uprated current capability makes HER203G B0G suitable for applications requiring additional current margin. The superior fast recovery characteristics (50 ns vs. 150 ns) and lower forward voltage drop (1.0 V @ 2.0 A) provide performance benefits in switching applications.

Q: Why does 1N5393-E3/73 use a different package (DO-204AL) than the original PR1503G-T (DO-15)?

A: 1N5393-E3/73 is available in DO-204AL (DO-41) package configuration, which is a different axial through-hole form factor. This package change requires PCB layout modification and is suitable only for new designs or applications where package form factor change is acceptable. For direct package compatibility, select RGP15D-E3/54, FR153GP-AP, or STTH1R02Q/STTH1R02QRL instead.

Q: What is the significance of the forward voltage drop difference between substitute parts?

A: Forward voltage drop (Vf) affects power dissipation and thermal performance. Lower Vf values (STTH1R02Q/STTH1R02QRL at 1.0 V, GP15D-E3/54 at 1.1 V) result in reduced power loss compared to higher Vf values (1N5393-E3/73 and 1N5393GP-E3/54 at 1.4 V). For applications with high current density or thermal constraints, selection of lower Vf alternatives improves efficiency and reduces heat generation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (RGP15D-E3/54, 1N5393-E3/73, 1N5393GP-E3/54, FR153GP-AP, GP15D-E3/54, HER203G B0G, STTH1R02Q, STTH1R02QRL) are ROHS3 compliant and maintain EAR99 export classification and HTSUS code 8541.10.0080 consistency with the original PR1503G-T.

Q: Which substitute part offers the best overall performance improvement?

A: STTH1R02Q and STTH1R02QRL offer the most significant performance improvements: 30 ns reverse recovery time (versus 150 ns original), 1.0 V forward voltage drop (versus 1.3 V original), and reduced reverse leakage current (3 µA versus 5 µA original). These improvements result in faster switching, lower power dissipation, and improved thermal performance. Both parts maintain 200 V reverse voltage and 1.5 A current ratings with extended junction temperature to 175°C.

Q: Can GP15D-E3/54 be used in high-frequency switching applications?

A: GP15D-E3/54 is classified as standard recovery with 3.5 µs reverse recovery time, making it unsuitable for high-frequency switching applications. For high-frequency switching, select fast recovery alternatives: RGP15D-E3/54 (150 ns), FR153GP-AP (150 ns), STTH1R02Q (30 ns), or STTH1R02QRL (30 ns).

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