PR1502S-T Equivalent & Substitute Parts

Part Overview

The PR1502S-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 1.5 A average rectified current in a DO-41 through-hole axial package. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substitute parts must maintain electrical compatibility across voltage rating, current capacity, and thermal operating range while accommodating variations in package configuration and recovery characteristics.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1.5 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic is based on the following critical parameters:

Voltage Rating: All substitute parts must maintain 100 V DC reverse voltage rating to ensure safe operation in the original circuit.

Current Capacity: The PR1502S-T is rated for 1.5 A average rectified current. Substitutes are grouped into two categories:

Full Current Equivalents (1.5 A): Parts maintaining the original 1.5 A rating provide direct functional replacement without circuit derating.
Reduced Current Substitutes (1.0 A to 1.3 A): Parts with lower current ratings are suitable only where circuit design permits operation at reduced current capacity.

Recovery Characteristics: The PR1502S-T exhibits fast recovery (≤ 500 ns, trr = 150 ns). Substitutes with standard recovery (> 500 ns) introduce different switching behavior and are suitable for applications where recovery speed is not critical.

Package Compatibility: The original part uses DO-41 axial configuration. Substitutes in DO-204AL (DO-41) and DO-204AC (DO-15) packages are mechanically compatible with through-hole PCB layouts. Package differences do not affect electrical function.

Thermal Range: The PR1502S-T operates from -65°C to 150°C. Substitutes with equal or extended temperature ranges maintain thermal compatibility.

Compliance: RoHS3 compliance and REACH status are provided for regulatory alignment.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Speed	trr	Package	Tj Range	Status
PR1502S-T	Diodes Incorporated	100 V	1.5 A	1.2 V @ 1.5 A	Fast Recovery ≤ 500ns	150 ns	DO-41	-65 to 150°C	Obsolete
1N5392-E3/54	Vishay General Semiconductor	100 V	1.5 A	1.4 V @ 1.5 A	Standard Recovery > 500ns	2 µs	DO-204AL (DO-41)	-50 to 150°C	Active
RGP15B-E3/54	Vishay General Semiconductor	100 V	1.5 A	1.3 V @ 1.5 A	Fast Recovery ≤ 500ns	150 ns	DO-204AC (DO-15)	-65 to 175°C	Active
RGP15B-E3/73	Vishay General Semiconductor	100 V	1.5 A	1.3 V @ 1.5 A	Fast Recovery ≤ 500ns	150 ns	DO-204AC (DO-15)	-65 to 175°C	Active
1N6077	Microchip Technology	100 V	1.3 A	1.76 V @ 18.8 A	Fast Recovery ≤ 500ns	30 ns	Axial	-65 to 155°C	Active
1N4002G	Taiwan Semiconductor Corporation	100 V	1 A	1 V @ 1 A	Standard Recovery > 500ns	—	DO-204AL (DO-41)	-55 to 150°C	Active
1N4002RLG	onsemi	100 V	1 A	1.1 V @ 1 A	Standard Recovery > 500ns	—	DO-204AL (DO-41)	-65 to 175°C	Not For New Designs
GP10-4002-E3/54	Vishay General Semiconductor	100 V	1 A	—	Standard Recovery > 500ns	—	DO-204AL (DO-41)	—	Active
GP15B-E3/54	Vishay General Semiconductor	100 V	1.5 A	1.1 V @ 1.5 A	Standard Recovery > 500ns	3.5 µs	DO-204AC (DO-15)	-65 to 175°C	Active
RGP10B	Fairchild Semiconductor	100 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150 ns	DO-204AL (DO-41)	-65 to 175°C	Active
UF4002-M3/73	Vishay General Semiconductor	100 V	1 A	1 V @ 1 A	Fast Recovery ≤ 500ns	50 ns	DO-204AL (DO-41)	-55 to 150°C	Active

Engineering Selection Recommendations

Direct Equivalents (1.5 A Rating, Active Status):

The parts 1N5392-E3/54, RGP15B-E3/54, and RGP15B-E3/73 maintain the 1.5 A current rating and are classified as active products. These parts are suitable for direct substitution where the original circuit design requires full 1.5 A capacity.

1N5392-E3/54 (Vishay): Active status, RoHS3 compliant, standard recovery characteristic. Suitable for applications where switching speed is not performance-critical.
RGP15B-E3/54 and RGP15B-E3/73 (Vishay): Active status, RoHS3 compliant, fast recovery characteristic matching the original part's speed profile. Extended temperature range (-65 to 175°C) provides thermal margin beyond the original specification.

Reduced Current Substitutes (1.0 A to 1.3 A Rating, Active Status):

Parts with reduced current ratings are suitable only where circuit analysis confirms operation at lower current capacity does not compromise system function.

RGP10B (Fairchild): 1 A rating, fast recovery (150 ns), active status, extended temperature range. Suitable for circuits designed to operate at 1 A or lower.
UF4002-M3/73 (Vishay): 1 A rating, fast recovery (50 ns), active status, RoHS3 compliant. Fastest recovery time among 1 A substitutes.
1N4002G (Taiwan Semiconductor): 1 A rating, standard recovery, active status. Lower cost alternative for non-critical switching applications.
GP10-4002-E3/54 (Vishay): 1 A rating, standard recovery, active status, RoHS3 compliant.

Intermediate Current Substitute:

1N6077 (Microchip): 1.3 A rating, fast recovery (30 ns), active status. Bridges the gap between 1 A and 1.5 A ratings. Note: RoHS non-compliant status may restrict use in regulated applications.

Parts to Avoid for New Designs:

1N4002RLG (onsemi): Classified as "Not For New Designs," indicating end-of-life trajectory despite current active inventory.

Compliance Considerations:

All recommended active substitutes maintain RoHS3 compliance except 1N6077. REACH status is unaffected for all active substitutes, matching the original part's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can I use a 1 A rated diode in place of the PR1502S-T rated for 1.5 A?

A: Substitution with 1 A rated parts is permissible only if circuit analysis confirms that maximum operating current does not exceed 1 A. If the original design requires 1.5 A capacity, using a 1 A substitute will cause the diode to operate beyond its rated current, resulting in excessive heat generation and potential failure. Verify circuit current requirements before selecting a reduced-current substitute.

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

A: Recovery speed refers to the time required for a diode to transition from conducting to blocking state. The PR1502S-T exhibits fast recovery (150 ns). Standard recovery diodes (> 500 ns) switch more slowly. In high-frequency switching applications, fast recovery diodes reduce switching losses and electromagnetic interference. In low-frequency or DC applications, recovery speed is not performance-critical, and standard recovery diodes are acceptable.

Q: Are DO-41 and DO-204AL packages interchangeable?

A: Yes. DO-204AL is the formal designation for the DO-41 package. Both refer to the same through-hole axial package configuration. Parts specified as DO-204AL (DO-41) are mechanically and electrically compatible with DO-41 PCB footprints.

Q: Is the DO-204AC (DO-15) package compatible with DO-41 PCB layouts?

A: DO-204AC (DO-15) is a different through-hole axial package with different lead spacing and body dimensions compared to DO-41. While both are through-hole axial packages, they are not directly interchangeable on the same PCB without layout modification. Verify PCB footprint compatibility before selecting parts in DO-15 package.

Q: Why is the 1N6077 listed as RoHS non-compliant?

A: The 1N6077 does not meet RoHS3 compliance requirements. In applications subject to RoHS regulations (EU, California, and other jurisdictions), this part cannot be used. Select RoHS3-compliant alternatives for regulated applications.

Q: What does "Not For New Designs" mean for the 1N4002RLG?

A: This designation indicates that the manufacturer has discontinued active development and is managing existing inventory only. While the part may be available, it is not recommended for new circuit designs. Use active-status alternatives to ensure long-term availability and manufacturer support.

Q: Can I use the 1N5392-E3/54 as a direct replacement for the PR1502S-T?

A: Yes, the 1N5392-E3/54 maintains the 100 V rating and 1.5 A current capacity, making it electrically compatible. However, it exhibits standard recovery characteristics (2 µs) compared to the PR1502S-T's fast recovery (150 ns). In applications where switching speed affects performance, this difference must be evaluated. For DC or low-frequency applications, the difference is not significant.

Q: What is the advantage of RGP15B-E3/54 over 1N5392-E3/54?

A: Both parts maintain 1.5 A rating and 100 V voltage. The RGP15B-E3/54 offers fast recovery (150 ns) matching the original PR1502S-T, whereas 1N5392-E3/54 has standard recovery (2 µs). Additionally, RGP15B-E3/54 has an extended temperature range (-65 to 175°C) compared to 1N5392-E3/54 (-50 to 150°C). Select RGP15B-E3/54 for applications requiring fast switching or operation at elevated temperatures.

Q: Are there any inventory considerations when selecting a substitute?

A: Inventory levels are provided for reference. Parts with higher inventory (such as RGP10B with 17,000 units) may offer better availability and lead time. However, inventory levels fluctuate and should not be the primary selection criterion. Prioritize electrical compatibility and product status (active vs. obsolete) over inventory quantity.

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