Equivalent & Substitute Parts for PR3003-T

Part Overview

The PR3003-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 200 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing production and maintenance applications. The diode features fast recovery characteristics with a reverse recovery time of 150 ns, suitable for standard rectification circuits requiring moderate switching speeds.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 3 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Mounting Type	Through Hole	—
Package / Case	DO-201AD, Axial	—
Operating Temperature - Junction	-65°C ~ 150°C	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the PR3003-T is determined by strict electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 3 A
Mounting Type: Must be Through Hole
Package / Case: Must be DO-201AD or compatible axial package

Secondary Compatibility Factors:

Forward voltage (Vf) characteristics within acceptable operating ranges
Reverse recovery time (trr) and speed classification for circuit performance
Reverse leakage current specifications
Operating temperature range compatibility with application requirements
RoHS and REACH compliance status for regulatory alignment

Substitute parts are grouped into two categories:

Category 1: Direct Electrical and Package Equivalents Parts with identical or superior electrical ratings in DO-201AD packaging, maintaining fast or standard recovery characteristics. These include 1N5402-E3/54, 1N5402G, 1N5402RLG, UF5402-E3/54, STTH3R02, and STTH3R02RL.

Category 2: Functional Equivalents with Alternative Characteristics Parts meeting voltage and current requirements with different recovery speeds or package variants. These include 1N5417 (fast recovery, axial package), 1N5624-TR (avalanche technology, SOD-64 package), BY251P-E3/54 (standard recovery, DO-201AD), and FR303G B0G (fast recovery, DO-201AD).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Product Status	RoHS
PR3003-T	Diodes Incorporated	200	3	1.2 @ 3A	Fast Recovery ≤ 500ns	150	5 @ 200V	DO-201AD	Obsolete	ROHS3
1N5402-E3/54	Vishay General Semiconductor	200	3	1.2 @ 3A	Standard Recovery >500ns	—	5 @ 200V	DO-201AD	Active	ROHS3
1N5402G	Taiwan Semiconductor Corporation	200	3	1.0 @ 3A	Standard Recovery >500ns	—	5 @ 200V	DO-201AD	Active	ROHS3
1N5402RLG	onsemi	200	3	1.0 @ 3A	Standard Recovery >500ns	—	10 @ 200V	DO-201AA/DO-27	Not For New Designs	ROHS3
1N5417	Microchip Technology	200	3	1.5 @ 9A	Fast Recovery ≤ 500ns	150	1 @ 200V	Axial	Active	Non-compliant
1N5624-TR	Vishay General Semiconductor	200	3	1.0 @ 3A	Standard Recovery >500ns	7500	1 @ 200V	SOD-64	Active	ROHS3
BY251P-E3/54	Vishay General Semiconductor	200	3	1.1 @ 3A	Standard Recovery >500ns	3000	5 @ 200V	DO-201AD	Active	ROHS3
FR303G B0G	Taiwan Semiconductor Corporation	200	3	1.3 @ 3A	Fast Recovery ≤ 500ns	150	5 @ 200V	DO-201AD	Active	ROHS3
STTH3R02	STMicroelectronics	200	3	1.0 @ 3A	Fast Recovery ≤ 500ns	30	3 @ 200V	DO-201AD	Active	ROHS3
STTH3R02RL	STMicroelectronics	200	3	1.0 @ 3A	Fast Recovery ≤ 500ns	30	3 @ 200V	DO-201AD	Active	ROHS3
UF5402-E3/54	Vishay General Semiconductor	200	3	1.0 @ 3A	Fast Recovery ≤ 500ns	50	10 @ 200V	DO-201AD	Active	ROHS3

Engineering Selection Recommendations

Primary Substitutes for Direct Replacement:

The STTH3R02RL and STTH3R02 from STMicroelectronics are the preferred substitutes for the PR3003-T. Both parts maintain identical electrical ratings (200 V, 3 A) in the same DO-201AD package with superior fast recovery characteristics (30 ns trr versus 150 ns). STTH3R02RL is recommended for new designs due to its active product status and highest inventory availability (55,200 pcs). Both are ROHS3 compliant and REACH unaffected.

Secondary Substitutes with Active Status:

The UF5402-E3/54 from Vishay General Semiconductor provides fast recovery performance (50 ns trr) in DO-201AD packaging with identical voltage and current ratings. This part is ROHS3 compliant and actively produced.

The FR303G B0G from Taiwan Semiconductor Corporation offers fast recovery characteristics (150 ns trr, matching the original PR3003-T) in DO-201AD packaging with active product status and ROHS3 compliance.

Standard Recovery Alternatives:

The 1N5402G from Taiwan Semiconductor Corporation and 1N5402-E3/54 from Vishay General Semiconductor provide standard recovery performance in DO-201AD packaging with identical electrical ratings. Both are ROHS3 compliant and actively produced. These parts are suitable for applications where fast recovery is not required.

Avoid for New Designs:

The 1N5402RLG from onsemi carries a "Not For New Designs" status and should not be selected for new applications despite meeting electrical requirements.

The 1N5417 from Microchip Technology, while offering fast recovery and active status, is RoHS non-compliant and should be avoided in applications requiring regulatory compliance.

The 1N5624-TR from Vishay General Semiconductor uses avalanche technology with significantly longer reverse recovery time (7.5 µs) and SOD-64 packaging, making it unsuitable as a direct replacement despite meeting voltage and current specifications.

Frequently Asked Questions (FAQ)

Q: Can the PR3003-T be directly replaced with any of the listed substitutes?

A: Yes, multiple substitutes meet the electrical and mechanical requirements for direct replacement. The STTH3R02RL and STTH3R02 are the most suitable options, offering identical voltage and current ratings in the same DO-201AD package with superior performance characteristics and active product status.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have shorter reverse recovery times (typically ≤ 500 ns), allowing them to switch off more quickly. Standard recovery diodes have longer reverse recovery times (> 500 ns). The PR3003-T is a fast recovery device with 150 ns trr. Substitutes with faster recovery times (such as STTH3R02 at 30 ns) provide improved switching performance, while standard recovery substitutes may be acceptable in lower-frequency applications.

Q: Are all listed substitutes RoHS compliant?

A: Most substitutes are ROHS3 compliant. The exception is the 1N5417 from Microchip Technology, which is RoHS non-compliant and should not be used in applications requiring regulatory compliance.

Q: What is the significance of the DO-201AD package specification?

A: The DO-201AD is an axial through-hole package with specific physical dimensions and lead configurations. Substitutes must use the same or compatible package to ensure mechanical fit in existing PCB designs. The 1N5624-TR uses SOD-64 packaging and the 1N5402RLG uses DO-201AA/DO-27 packaging, which may require PCB layout modifications.

Q: Why is the 1N5402RLG marked "Not For New Designs"?

A: This designation indicates that the manufacturer (onsemi) is phasing out this product and recommends against its use in new applications. While it meets the electrical requirements, it should only be used for maintenance of existing equipment.

Q: How does forward voltage (Vf) affect substitution?

A: Forward voltage determines the voltage drop across the diode during conduction. The PR3003-T specifies 1.2 V @ 3 A. Substitutes with lower Vf values (such as 1.0 V) result in lower power dissipation and heat generation. Substitutes with higher Vf values (such as 1.3 V or 1.5 V) increase power dissipation. Selection depends on circuit design margins and thermal management requirements.

Q: What is reverse leakage current and why does it matter?

A: Reverse leakage current (Ir) is the small current that flows through the diode when reverse-biased. The PR3003-T specifies 5 µA @ 200 V. Lower leakage currents (such as 1 µA in the 1N5417 or 1N5624-TR) indicate better blocking characteristics and lower standby power consumption. Higher leakage currents (such as 10 µA in the 1N5402RLG or UF5402-E3/54) are acceptable in most applications but may affect low-power circuit performance.

Q: Can I use the 1N5624-TR as a substitute despite its different package?

A: The 1N5624-TR meets the electrical requirements (200 V, 3 A) but uses SOD-64 packaging instead of DO-201AD. This requires PCB layout modifications and is not recommended as a direct replacement unless the circuit board can be redesigned. Additionally, its avalanche technology and significantly longer reverse recovery time (7.5 µs) make it unsuitable for applications requiring fast switching.

Q: What is REACH compliance and why is it important?

A: REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) is a European Union regulation governing chemical substances in products. Most listed substitutes are REACH unaffected, indicating compliance. The 1N5402-E3/54 is listed as REACH affected, which may require additional documentation in certain applications. Verify REACH status requirements for your specific application and region.

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