PR1505S-T Equivalent & Substitute Parts

Part Overview

The PR1505S-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 600 V DC reverse voltage and 1.5 A average rectified current in a DO-41 through-hole axial package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical compatibility within the specified voltage and current parameters while accommodating available packaging options.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1.5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	250 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the PR1505S-T is determined by the following critical electrical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
Current - Average Rectified (Io): Must equal or exceed 1.5 A
Mounting Type: Through Hole
Package compatibility: DO-41, DO-204AL, or DO-204AC (axial configurations)

Secondary Compatibility Factors:

Speed classification: Fast Recovery or Standard Recovery acceptable
Reverse Recovery Time (trr): Lower values indicate improved performance
Reverse Leakage Current: Lower values preferred
Operating Temperature Range: Must accommodate application requirements
RoHS and REACH compliance status

Substitute parts are grouped into two categories:

Category A - Direct Current Rating Match (1.5 A): Parts with 1.5 A average rectified current rating, maintaining exact electrical equivalence to the PR1505S-T.

Category B - Higher Current Rating (≥ 2 A): Parts with current ratings exceeding 1.5 A, providing electrical compatibility with enhanced current capacity. These parts are suitable for applications where the PR1505S-T operates below maximum current specifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Speed	trr (ns)	Package	Status	RoHS
PR1505S-T	Diodes Incorporated	600 V	1.5	1.2 V @ 1.5 A	Fast Recovery ≤ 500ns	250	DO-41	Obsolete	ROHS3
MUR260RLG	onsemi	600 V	2	1.35 V @ 2 A	Fast Recovery ≤ 500ns	75	Axial	Active	ROHS3
1N4005G R1G	Taiwan Semiconductor Corporation	600 V	1	1 V @ 1 A	Standard Recovery >500ns	—	DO-204AL (DO-41)	Active	ROHS3
1N4946	Microchip Technology	600 V	1	1.3 V @ 1 A	Fast Recovery ≤ 500ns	250	Axial	Active	Non-compliant
1N4946GP-AP	Micro Commercial Co	600 V	1	1.3 V @ 1 A	Fast Recovery ≤ 500ns	250	DO-41	Active	ROHS3
GP15J-E3/54	Vishay General Semiconductor - Diodes Division	600 V	1.5	1.1 V @ 1.5 A	Standard Recovery >500ns	3500	DO-204AC (DO-15)	Active	ROHS3
GP15J-E3/73	Vishay General Semiconductor - Diodes Division	600 V	1.5	1.1 V @ 1.5 A	Standard Recovery >500ns	3500	DO-204AC (DO-15)	Active	ROHS3
RGP10J	onsemi	600 V	1	1.3 V @ 1 A	Fast Recovery ≤ 500ns	250	DO-41	Not For New Designs	ROHS3
RGP10JE-E3/53	Vishay General Semiconductor - Diodes Division	600 V	1	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150	DO-204AL (DO-41)	Active	ROHS3
RGP10JE-E3/73	Vishay General Semiconductor - Diodes Division	600 V	1	1.3 V @ 1 A	Fast Recovery ≤ 500ns	250	DO-204AL (DO-41)	Active	ROHS3
RGP15J-E3/54	Vishay General Semiconductor - Diodes Division	600 V	1.5	1.3 V @ 1.5 A	Fast Recovery ≤ 500ns	250	DO-204AC (DO-15)	Active	ROHS3
RGP15J-E3/73	Vishay General Semiconductor - Diodes Division	600 V	1.5	1.3 V @ 1.5 A	Fast Recovery ≤ 500ns	250	DO-204AC (DO-15)	Active	ROHS3

Engineering Selection Recommendations

Preferred Substitutes - Direct Electrical Equivalents (1.5 A Rating):

RGP15J-E3/54 and RGP15J-E3/73 (Vishay General Semiconductor - Diodes Division) are the primary recommended substitutes. Both parts maintain the 600 V / 1.5 A electrical specification with active product status and ROHS3 compliance. These parts are packaged in DO-204AC (DO-15) axial configuration. The primary design consideration is the package transition from DO-41 to DO-15, which requires PCB layout verification for lead spacing compatibility. Both variants are functionally identical; selection between E3/54 and E3/73 depends on supplier availability and packaging format requirements (Cut Tape vs. Tape & Box).

Alternative Substitutes - Higher Current Capacity:

MUR260RLG (onsemi) provides 600 V / 2 A capability with active status and ROHS3 compliance. This part offers enhanced current capacity and superior reverse recovery time (75 ns vs. 250 ns), making it suitable for applications where the PR1505S-T operates below maximum current specifications. The axial package maintains through-hole mounting compatibility.

Substitutes with Current Rating Limitations:

Parts rated at 1 A (1N4005G R1G, 1N4946, 1N4946GP-AP, RGP10J, RGP10JE-E3/53, RGP10JE-E3/73) are electrically compatible with the PR1505S-T only in applications where circuit current does not exceed 1 A. These parts are not suitable for designs requiring the full 1.5 A capability of the original component.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance. The 1N4946 (Microchip Technology) is RoHS non-compliant and should be avoided in applications with RoHS compliance requirements. The RGP10J is designated "Not For New Designs" and should be considered only for legacy system maintenance.

Frequently Asked Questions (FAQ)

Q: Can I use a 1 A rated diode as a direct replacement for the PR1505S-T?

A: No. The PR1505S-T is rated for 1.5 A average rectified current. Substituting a 1 A rated diode (such as 1N4005G R1G, 1N4946, or RGP10JE-E3/53) is only acceptable if circuit analysis confirms that actual operating current does not exceed 1 A. Operating a 1 A diode at or above its rated current will result in excessive junction temperature and reduced component reliability.

Q: What is the difference between DO-41 and DO-15 packages?

A: DO-41 (DO-204AL) and DO-15 (DO-204AC) are both axial through-hole packages with different lead spacing. DO-41 has a 0.400 inch lead spacing, while DO-15 has a 0.300 inch lead spacing. PCB layout modifications are required when transitioning between these packages. Physical lead length and spacing must be verified against PCB hole patterns and component placement constraints.

Q: Why does the MUR260RLG have a lower reverse recovery time than the PR1505S-T?

A: Reverse recovery time (trr) is a characteristic of diode technology and manufacturing process. The MUR260RLG exhibits 75 ns trr compared to the PR1505S-T's 250 ns, indicating faster switching behavior. This is a performance advantage in high-frequency switching applications but does not affect DC rectification performance in standard power supply circuits.

Q: Is the GP15J-E3/54 identical to the GP15J-E3/73?

A: Both parts are electrically and functionally identical. The difference lies in packaging format: GP15J-E3/54 is supplied in Cut Tape (CT), while GP15J-E3/73 is supplied in Tape & Box (TB). Selection depends on procurement requirements and supplier availability. Both maintain identical electrical specifications and ROHS3 compliance.

Q: Can I use the MUR260RLG in a circuit designed for the PR1505S-T?

A: Yes. The MUR260RLG is rated for 600 V / 2 A, which exceeds the PR1505S-T specification of 600 V / 1.5 A. The higher current rating provides design margin and is electrically compatible. The primary consideration is package compatibility: MUR260RLG is supplied in axial configuration, which is compatible with through-hole PCB layouts designed for the PR1505S-T.

Q: What does "Not For New Designs" mean for the RGP10J?

A: This designation indicates that the manufacturer (onsemi) has classified this part as obsolete or superseded for new product development. While the part may remain available in inventory, it should not be selected for new circuit designs. Active alternatives such as RGP10JE-E3/53 or RGP10JE-E3/73 should be used instead.

Q: Are all substitute parts ROHS3 compliant?

A: No. The 1N4946 (Microchip Technology) is listed as RoHS non-compliant. All other substitute parts listed are ROHS3 compliant. Compliance status must be verified against application requirements before component selection.

Q: What is the significance of the forward voltage (Vf) difference between substitute parts?

A: Forward voltage varies between diode types and manufacturers. The PR1505S-T specifies 1.2 V @ 1.5 A, while substitutes range from 1.0 V to 1.35 V at their respective rated currents. In rectification circuits, this difference affects power dissipation and heat generation. Lower forward voltage results in reduced power loss. For most general-purpose rectification applications, forward voltage differences within this range are not critical, but thermal design calculations should account for the specific part selected.

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