Equivalent & Substitute Parts for PR1003G-T

Part Overview

The PR1003G-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 200 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The PR1003G-T 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)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1 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-204AL, DO-41, Axial	-
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the PR1003G-T is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 1 A
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial configurations

Secondary Compatibility Factors:

Forward voltage (Vf) at rated current
Reverse recovery time (trr) and speed classification
Reverse leakage current
Operating temperature range
RoHS and REACH compliance status

Substitute parts are grouped into two categories: Direct Equivalents (matching all primary and secondary parameters) and Functional Equivalents (meeting primary electrical and mechanical requirements with acceptable variations in secondary parameters such as forward voltage or recovery time).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Ir @ 200V [µA]	Speed	Package	Temp Range [°C]	Status
PR1003G-T	Diodes Incorporated	200	1	1.3	150	5	Fast Recovery	DO-41	-65 to 150	Obsolete
1N4935G-T	Diodes Incorporated	200	1	1.2	200	5	Fast Recovery	DO-41	-65 to 150	Active
BYD33DGPHE3/54	Vishay General Semiconductor - Diodes Division	200	1	1.3	150	5	Fast Recovery	DO-204AL (DO-41)	-65 to 175	Active
RGP10D	Fairchild Semiconductor	200	1	1.3	150	5	Fast Recovery	DO-204AL (DO-41)	-65 to 175	Active
RGP10DE-E3/54	Vishay General Semiconductor - Diodes Division	200	1	1.3	150	5	Fast Recovery	DO-204AL (DO-41)	-65 to 175	Active
1N3611	Microchip Technology	200	1	1.1	-	1	Standard Recovery	Axial	-65 to 175	Active
1N3611GP-E3/54	Vishay General Semiconductor - Diodes Division	200	1	1	2000	1	Standard Recovery	DO-204AL (DO-41)	-65 to 175	Active
1N3611GP-E3/73	Vishay General Semiconductor - Diodes Division	200	1	1	2000	1	Standard Recovery	DO-204AL (DO-41)	-65 to 175	Active
1N4003-E3/54	Vishay General Semiconductor - Diodes Division	200	1	1.1	-	5	Standard Recovery	DO-204AL (DO-41)	-55 to 150	Active
1N4003-TP	Micro Commercial Co	200	1	1.1	2000	5	Standard Recovery	DO-41	-55 to 150	Not For New Designs
1N4003G	Taiwan Semiconductor Corporation	200	1	1	-	5	Standard Recovery	DO-204AL (DO-41)	-55 to 150	Active

Engineering Selection Recommendations

Direct Equivalents (Preferred for Replacement):

The following parts provide direct electrical and mechanical equivalence to the PR1003G-T:

1N4935G-T (Diodes Incorporated): Active product status with identical voltage and current ratings. Forward voltage is 0.1 V lower (1.2 V vs. 1.3 V), and reverse recovery time is 50 ns longer (200 ns vs. 150 ns). Both parameters remain within acceptable operating margins for general-purpose rectification. ROHS3 compliant.
BYD33DGPHE3/54 (Vishay General Semiconductor - Diodes Division): Exact electrical match with identical forward voltage (1.3 V) and reverse recovery time (150 ns). Extended operating temperature range (-65°C to 175°C vs. -65°C to 150°C). Active product status with ROHS3 compliance.
RGP10D (Fairchild Semiconductor): Electrical and mechanical equivalent with identical specifications. Extended operating temperature range. Active product status.
RGP10DE-E3/54 (Vishay General Semiconductor - Diodes Division): Exact electrical match with extended temperature range. Tape & Reel packaging. Active product status with ROHS3 compliance.

Functional Equivalents (Acceptable for Most Applications):

The following parts meet primary electrical and mechanical requirements with acceptable variations:

1N3611GP-E3/54 and 1N3611GP-E3/73 (Vishay General Semiconductor - Diodes Division): Standard recovery diodes with lower forward voltage (1.0 V) and lower reverse leakage (1 µA). Reverse recovery time is significantly longer (2000 ns), making these suitable for lower-frequency applications. ROHS3 compliant, active status.
1N4003-E3/54 (Vishay General Semiconductor - Diodes Division): Standard recovery diode with identical voltage and current ratings. Forward voltage 1.1 V, standard recovery characteristics. Operating temperature range -55°C to 150°C. ROHS3 compliant, active status.
1N4003G (Taiwan Semiconductor Corporation): Standard recovery equivalent with lower forward voltage (1.0 V). Active product status with ROHS3 compliance.

Not Recommended:

1N4003-TP (Micro Commercial Co): Product status is "Not For New Designs," indicating obsolescence or discontinuation planning. Avoid for new applications.
1N3611 (Microchip Technology): RoHS non-compliant. Use only in legacy systems where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can I use 1N4935G-T as a direct replacement for PR1003G-T?

A: Yes. The 1N4935G-T is an active product from Diodes Incorporated with identical voltage (200 V) and current (1 A) ratings. The forward voltage is 0.1 V lower (1.2 V vs. 1.3 V), and reverse recovery time is 50 ns longer (200 ns vs. 150 ns). Both variations are acceptable for general-purpose rectification circuits. The part is ROHS3 compliant and currently in production.

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

A: Fast recovery diodes (PR1003G-T, 1N4935G-T, BYD33DGPHE3/54, RGP10D, RGP10DE-E3/54) have reverse recovery times ≤ 500 ns, typically 150–200 ns. Standard recovery diodes (1N3611 series, 1N4003 series) have reverse recovery times > 500 ns, typically 2000 ns. Fast recovery diodes are preferred for switching applications and higher-frequency circuits. Standard recovery diodes are suitable for lower-frequency rectification and general-purpose applications with lower switching speeds.

Q: Are all substitute parts available in the same DO-41 package?

A: Most substitute parts are available in DO-204AL (DO-41) or equivalent axial packages. The 1N3611 from Microchip Technology is available in an axial package configuration. Verify specific packaging requirements with the supplier, as some manufacturers offer multiple package options for the same part number.

Q: Which substitute part has the lowest forward voltage drop?

A: The 1N3611GP-E3/54, 1N3611GP-E3/73, and 1N4003G all have forward voltages of 1.0 V at 1 A, compared to 1.3 V for the PR1003G-T. Lower forward voltage reduces power dissipation in rectification circuits. However, these parts are standard recovery diodes with longer reverse recovery times, making them unsuitable for high-frequency switching applications.

Q: What is the temperature range difference between PR1003G-T and its substitutes?

A: The PR1003G-T operates from -65°C to 150°C. Most substitute parts (BYD33DGPHE3/54, RGP10D, RGP10DE-E3/54, 1N3611 series, 1N3611GP-E3/54, 1N3611GP-E3/73) extend the upper limit to 175°C, providing 25°C additional margin. The 1N4003 series parts operate from -55°C to 150°C, with a reduced lower temperature limit of 10°C. Select based on your application's thermal requirements.

Q: Is RoHS compliance important for my application?

A: RoHS3 compliance is mandatory for products sold in the European Union and many other markets. All recommended substitute parts except 1N3611 (Microchip Technology) are ROHS3 compliant. If your application requires RoHS compliance, avoid the non-compliant 1N3611 option.

Q: Can I use 1N4003-TP as a substitute?

A: The 1N4003-TP meets the electrical and mechanical requirements; however, its product status is "Not For New Designs." This designation indicates the manufacturer is phasing out the part. Use only in legacy systems or maintenance applications where existing inventory is available. For new designs, select from active product alternatives.

Q: What is the difference between 1N3611 and 1N3611GP-E3/54?

A: Both parts have identical electrical ratings (200 V, 1 A, 1.0 V forward voltage). The 1N3611 from Microchip Technology is available in bulk packaging with an axial package configuration and is RoHS non-compliant. The 1N3611GP-E3/54 from Vishay is the SUPERECTIFIER® series variant in DO-204AL (DO-41) package with tape & reel or cut tape packaging and is ROHS3 compliant. For new applications, use the 1N3611GP-E3/54.

Q: Which substitute offers the best overall compatibility with PR1003G-T?

A: BYD33DGPHE3/54 and RGP10DE-E3/54 provide the closest electrical match with identical forward voltage (1.3 V) and reverse recovery time (150 ns). Both are active products with extended operating temperature ranges and ROHS3 compliance. Choose based on packaging preference (bulk vs. tape & reel) and supplier availability.

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