PR1001-T Equivalent & Substitute Parts

Part Overview

The PR1001-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 50 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This component is classified as Active and complies with RoHS3 and REACH standards. Substitute parts are identified based on matching electrical ratings, package compatibility, and recovery speed characteristics. Alternative models become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements necessitate different recovery speed profiles or thermal operating ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 50 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

Substitute parts for the PR1001-T are grouped into two categories based on recovery speed characteristics:

Fast Recovery Diodes (≤ 500ns): Parts 1N4933-T, 1N4933G-T, and 1N4933G maintain the fast recovery speed profile of the main part, with reverse recovery times of 150–200 ns. These are direct functional equivalents for applications requiring rapid switching performance.

Standard Recovery Diodes (>500ns): Parts 1N4001-E3/54, 1N4001-E3/73, 1N4001-TP, 1N4001G, 1N4001GP-E3/54, 1N4001GP-E3/73, 1N4001RLG, and 1N4933G are standard recovery alternatives with recovery times of 2 µs or unspecified. These parts are suitable for applications where fast switching is not required.

All substitute parts share the following critical parameters with the PR1001-T:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 1 A
Current - Reverse Leakage @ Vr: 5 µA @ 50 V
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial
RoHS Status: ROHS3 Compliant

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Ir @ Vr [µA]	Tj (°C)	Packaging	Product Status
PR1001-T	Diodes Incorporated	50	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	150	5 @ 50 V	-65 to 150	Tape & Reel (TR)	Active
1N4933-T	Diodes Incorporated	50	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 50 V	-65 to 150	Cut Tape (CT)	Active
1N4933G-T	Diodes Incorporated	50	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 50 V	-65 to 150	Tape & Reel (TR)	Active
1N4001-E3/54	Vishay General Semiconductor - Diodes Division	50	1	1.1 @ 1 A	Standard Recovery >500ns	—	5 @ 50 V	-55 to 150	Cut Tape (CT)	Active
1N4001-E3/73	Vishay General Semiconductor - Diodes Division	50	1	1.1 @ 1 A	Standard Recovery >500ns	—	5 @ 50 V	-55 to 150	Cut Tape (CT)	Active
1N4001-TP	Micro Commercial Co	50	1	1.1 @ 1 A	Standard Recovery >500ns	2000	5 @ 50 V	-55 to 150	Cut Tape (CT)	Not For New Designs
1N4001G	Taiwan Semiconductor Corporation	50	1	1.0 @ 1 A	Standard Recovery >500ns	—	5 @ 50 V	-55 to 150	Tape & Reel (TR)	Active
1N4001GP-E3/54	Vishay General Semiconductor - Diodes Division	50	1	1.1 @ 1 A	Standard Recovery >500ns	2000	5 @ 50 V	-65 to 175	Cut Tape (CT)	Active
1N4001GP-E3/73	Vishay General Semiconductor - Diodes Division	50	1	1.1 @ 1 A	Standard Recovery >500ns	2000	5 @ 50 V	-65 to 175	Cut Tape (CT)	Active
1N4001RLG	onsemi	50	1	1.1 @ 1 A	Standard Recovery >500ns	—	10 @ 50 V	-65 to 175	Cut Tape (CT)	Not For New Designs
1N4933G	Good-Ark Semiconductor	50	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 50 V	-55 to 125	Cut Tape (CT) & Digi-Reel®	Active

Engineering Selection Recommendations

For Fast Recovery Applications: Select 1N4933-T or 1N4933G-T when fast switching performance is required. Both parts maintain the 150–200 ns reverse recovery time specification and are rated Active. The 1N4933-T offers identical thermal range (-65°C to 150°C) to the PR1001-T. The 1N4933G-T provides the same thermal range and is available in Tape & Reel packaging matching the original part format.

For Standard Recovery Applications: Select from the 1N4001 series when fast recovery is not a design requirement. Parts 1N4001-E3/54, 1N4001-E3/73, 1N4001G, 1N4001GP-E3/54, and 1N4001GP-E3/73 are all rated Active. The 1N4001GP-E3/54 and 1N4001GP-E3/73 offer extended thermal range (-65°C to 175°C) compared to the PR1001-T.

Avoid for New Designs: Parts 1N4001-TP and 1N4001RLG are designated "Not For New Designs" and should not be selected for new applications.

Compliance Considerations: All substitute parts listed are ROHS3 Compliant and REACH Unaffected, matching the regulatory status of the PR1001-T.

Frequently Asked Questions (FAQ)

Q: Can I substitute a standard recovery diode for the PR1001-T in any application?

A: No. Standard recovery diodes (1N4001 series) have reverse recovery times of 2 µs or longer, compared to the PR1001-T's 150 ns fast recovery specification. Substitution is only valid if the application does not require fast switching performance. Verify circuit timing requirements before selecting a standard recovery alternative.

Q: What is the difference between the 1N4933-T and 1N4933G-T?

A: Both parts are fast recovery diodes with identical electrical specifications (50 V, 1 A, 200 ns trr). The primary difference is packaging: 1N4933-T is supplied in Cut Tape (CT), while 1N4933G-T is supplied in Tape & Reel (TR). The 1N4933G-T matches the original PR1001-T packaging format.

Q: Why do some substitute parts have different forward voltage specifications?

A: Forward voltage (Vf) varies by manufacturer and technology. The PR1001-T specifies 1.2 V @ 1 A, while some alternatives specify 1.0–1.1 V @ 1 A. These differences are within acceptable tolerance for general-purpose rectifier applications. Verify circuit design margins if forward voltage drop is critical.

Q: Are the 1N4001GP-E3/54 and 1N4001GP-E3/73 interchangeable?

A: Yes. Both parts are electrically identical 1N4001GP variants with identical specifications. The suffix designations (-E3/54 and -E3/73) indicate different tape reel configurations or supplier codes. Selection between them depends on procurement and inventory management requirements.

Q: What does "Not For New Designs" mean for parts like 1N4001-TP?

A: "Not For New Designs" indicates the manufacturer has discontinued active development and support for that part number. While existing inventory may be available, these parts should not be selected for new circuit designs. Use Active-status alternatives instead.

Q: Can I use 1N4001RLG as a direct replacement for PR1001-T?

A: 1N4001RLG is electrically compatible but has two limitations: it is designated "Not For New Designs" and specifies 10 µA reverse leakage current compared to the PR1001-T's 5 µA. Use only if inventory constraints require it, and verify that the higher leakage current is acceptable for the application.

Q: What is the significance of the operating temperature range difference between parts?

A: The PR1001-T operates from -65°C to 150°C, while some alternatives (1N4001-E3/54, 1N4001-E3/73, 1N4001-TP, 1N4001G, 1N4933G) operate from -55°C to 150°C. If the application requires operation below -55°C, select parts with the extended lower temperature limit. Conversely, parts like 1N4001GP-E3/54 and 1N4001GP-E3/73 extend the upper limit to 175°C for higher-temperature environments.

Q: Why is the 1N4933G rated only to 125°C maximum junction temperature?

A: The 1N4933G from Good-Ark Semiconductor has a lower maximum junction temperature (-55°C to 125°C) than other fast recovery alternatives. This part is suitable for standard industrial applications but may not be appropriate for high-temperature environments. Verify thermal requirements before selection.

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