PR1002L-T Equivalent & Substitute Parts

Part Overview

The PR1002L-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing production and repair applications. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional compatibility within defined parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.2 @ 1	V @ A
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	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the PR1002L-T is determined by the following critical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 1 A minimum
Voltage - Forward (Vf) (Max) @ If: 1.2 V or lower at 1 A
Current - Reverse Leakage @ Vr: 5 µA or lower at 100 V

Mechanical Compatibility Criteria:

Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial configurations

Compliance Criteria:

RoHS Status: ROHS3 Compliant
Operating Temperature Range: -65°C to 150°C minimum

Substitute parts are grouped into two categories:

Parametric Equivalents (Diodes Incorporated 1N4934 Series): These parts maintain identical voltage and current ratings with fast recovery characteristics (≤500 ns) and are manufactured by the same supplier. Product status is active, ensuring continued availability.

Manufacturer Recommended Alternatives (1N4002 Series and Cross-Manufacturer Options): These parts meet all electrical and mechanical requirements but employ standard recovery characteristics (>500 ns). They are sourced from multiple manufacturers including Vishay, Comchip Technology, Taiwan Semiconductor Corporation, and onsemi, providing supply chain flexibility. Some variants carry "Not For New Designs" status but remain functionally compatible.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Ir @ Vr [µA]	Product Status	Packaging
PR1002L-T	Diodes Incorporated	100	1	1.2	150	5	Obsolete	DO-41
1N4934-T	Diodes Incorporated	100	1	1.2	200	5	Active	DO-41
1N4934G-T	Diodes Incorporated	100	1	1.2	200	5	Active	DO-41
1N4002-E3/73	Vishay General Semiconductor - Diodes Division	100	1	1.1	—	5	Active	DO-204AL (DO-41)
1N4002-G	Comchip Technology	100	1	1.1	—	5	Active	DO-41
1N4002-TP	Micro Commercial Co	100	1	1.1	2000	5	Not For New Designs	DO-41
1N4002E-E3/53	Vishay General Semiconductor - Diodes Division	100	1	1.1	—	5	Active	DO-204AL (DO-41)
1N4002E-E3/54	Vishay General Semiconductor - Diodes Division	100	1	1.1	—	5	Active	DO-204AL (DO-41)
1N4002G	Taiwan Semiconductor Corporation	100	1	1.0	—	5	Active	DO-204AL (DO-41)
1N4002GP-E3/54	Vishay General Semiconductor - Diodes Division	100	1	1.1	2000	5	Active	DO-204AL (DO-41)
1N4002RLG	onsemi	100	1	1.1	—	10	Not For New Designs	Axial

Engineering Selection Recommendations

For Active Production and New Designs:

The 1N4934-T and 1N4934G-T (Diodes Incorporated) are the primary recommended equivalents. Both parts maintain active product status, are ROHS3 compliant, and provide identical voltage and current ratings to the PR1002L-T. The 1N4934 series exhibits fast recovery characteristics (200 ns) consistent with the original part's performance envelope.

The 1N4002 series variants from Vishay General Semiconductor - Diodes Division (1N4002-E3/73, 1N4002E-E3/53, 1N4002E-E3/54, and 1N4002GP-E3/54) are manufacturer-recommended alternatives with active product status. These parts meet all electrical and mechanical requirements with forward voltage specifications of 1.0 to 1.1 V at 1 A, which is within acceptable tolerance for general-purpose rectification applications. All Vishay variants are ROHS3 compliant.

The 1N4002-G (Comchip Technology) and 1N4002G (Taiwan Semiconductor Corporation) provide additional sourcing options with active product status and full compliance certification.

For Repair and Legacy Applications:

The 1N4002-TP (Micro Commercial Co) and 1N4002RLG (onsemi) are functionally compatible but carry "Not For New Designs" status. These parts are suitable for field replacement and repair of existing equipment where supply chain continuity is required. The 1N4002RLG exhibits higher reverse leakage (10 µA at 100 V) compared to the original specification (5 µA), which may be acceptable in non-critical applications.

Compliance and Availability:

All recommended substitute parts are ROHS3 compliant and carry EAR99 export classification. Inventory levels vary significantly across manufacturers and packaging options, with Vishay 1N4002GP-E3/54 offering the highest stock availability (38,771 pieces).

Frequently Asked Questions (FAQ)

Q: Can the 1N4934-T directly replace the PR1002L-T without circuit modification?

A: Yes. The 1N4934-T is a parametric equivalent with identical voltage (100 V), current (1 A), and forward voltage (1.2 V @ 1 A) specifications. Both parts use the DO-41 through-hole package and operate across the same temperature range (-65°C to 150°C). No circuit modification is required.

Q: What is the difference between the 1N4934 series and the 1N4002 series?

A: The primary difference is recovery speed. The 1N4934 series exhibits fast recovery characteristics (≤500 ns), while the 1N4002 series uses standard recovery (>500 ns). Both series meet the 100 V / 1 A electrical requirements. Fast recovery diodes are preferred in high-frequency switching applications, while standard recovery diodes are suitable for general-purpose rectification at lower frequencies.

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

A: Most substitute parts are available in DO-41 or DO-204AL (DO-41) packages. The 1N4002RLG is supplied in an axial package configuration. Verify the specific package variant when ordering to ensure mechanical compatibility with existing PCB layouts.

Q: Why do some parts have "Not For New Designs" status?

A: Parts designated "Not For New Designs" are typically in mature or declining production phases. Manufacturers retain these parts for legacy support and repair applications but do not recommend them for new circuit designs. For new production, select parts with "Active" product status such as the 1N4934-T or Vishay 1N4002 variants.

Q: What is the significance of forward voltage differences (1.0 V to 1.2 V) among substitute parts?

A: Forward voltage variation within this range (0.2 V maximum spread) is typical across different manufacturers and process technologies. For general-purpose rectification, these differences have minimal impact on circuit performance. In precision applications requiring tight voltage regulation, forward voltage variation may require circuit compensation or selection of parts from a single manufacturer lot.

Q: Can the 1N4002RLG with 10 µA reverse leakage replace the PR1002L-T specified at 5 µA?

A: The 1N4002RLG is functionally compatible for most applications. The 10 µA reverse leakage specification is twice the original, which may be acceptable depending on circuit sensitivity to leakage current. In high-impedance analog circuits or precision measurement applications, the higher leakage may introduce unacceptable error. For general-purpose rectification and power supply applications, the difference is typically negligible.

Q: What packaging options are available for high-volume procurement?

A: Substitute parts are available in Cut Tape (CT) and Tape & Reel (TR) packaging for automated assembly. The 1N4002GP-E3/54 (Vishay) offers the largest inventory in Cut Tape format (38,771 pieces). For specific packaging requirements, consult individual manufacturer datasheets and distributor availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are ROHS3 compliant and suitable for applications requiring lead-free and restricted substance compliance.

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