PR1005L-T Equivalent & Substitute Parts

Part Overview

The PR1005L-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 600 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 design and procurement requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts satisfy the same functional requirements within acceptable parameter tolerances for general-purpose rectification applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.2	V @ 1 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 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the PR1005L-T is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 1 A minimum
Voltage - Forward (Vf) (Max) @ If: 1.2 V or lower at 1 A
Operating Temperature - Junction: -65°C to 150°C minimum range

Mechanical Compatibility Criteria:

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

Compliance Criteria:

RoHS Status: ROHS3 Compliant preferred for new designs
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1: Direct Manufacturer Equivalents (Diodes Incorporated) Parts that maintain identical electrical specifications and differ only in packaging format (Tape & Reel versus Cut Tape) or product status transition from obsolete to active.

Category 2: Parametric Equivalents and Manufacturer Recommended Alternatives Parts from alternative manufacturers that meet or exceed the electrical and mechanical requirements. These include both fast-recovery and standard-recovery variants. Standard-recovery diodes (trr > 500 ns) are functionally suitable for general-purpose rectification applications where switching speed is not a critical design constraint.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ 1A (V)	Speed	trr (ns/µs)	Package	Product Status	RoHS
PR1005L-T	Diodes Incorporated	600	1	1.2	Fast Recovery ≤ 500ns	250 ns	DO-41	Obsolete	ROHS3
PR1005-T	Diodes Incorporated	600	1	1.2	Fast Recovery ≤ 500ns	250 ns	DO-41	Active	ROHS3
1N4937-T	Diodes Incorporated	600	1	1.2	Fast Recovery ≤ 500ns	200 ns	DO-41	Active	ROHS3
1N4937G-T	Diodes Incorporated	600	1	1.2	Fast Recovery ≤ 500ns	200 ns	DO-41	Active	ROHS3
1N3613	Microchip Technology	600	1	1.1	Standard Recovery > 500ns	—	Axial	Active	Non-compliant
1N3613GP-E3/54	Vishay General Semiconductor	600	1	1.0	Standard Recovery > 500ns	2 µs	DO-41	Active	ROHS3
1N4005-E3/54	Vishay General Semiconductor	600	1	1.1	Standard Recovery > 500ns	—	DO-41	Active	ROHS3
1N4005-TP	Micro Commercial Co	600	1	1.1	Standard Recovery > 500ns	2 µs	DO-41	Active	ROHS3
1N4005G	Good-Ark Semiconductor	600	1	1.1	Standard Recovery > 500ns	1 µs	DO-41	Active	ROHS3
1N4005GP-E3/54	Vishay General Semiconductor	600	1	1.1	Standard Recovery > 500ns	2 µs	DO-41	Active	ROHS3
1N4005GP-E3/73	Vishay General Semiconductor	600	1	1.1	Standard Recovery > 500ns	2 µs	DO-41	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation: PR1005-T

The PR1005-T is the direct equivalent of the PR1005L-T, manufactured by Diodes Incorporated with identical electrical specifications and fast-recovery characteristics. This part is active in production status and ROHS3 compliant. Selection of PR1005-T eliminates obsolescence risk while maintaining design performance without circuit modification.

Secondary Recommendations: 1N4937-T and 1N4937G-T

Both 1N4937 variants are Diodes Incorporated fast-recovery diodes with 600 V / 1 A ratings and active product status. The 1N4937-T and 1N4937G-T feature a reverse recovery time of 200 ns, which is superior to the PR1005L-T specification of 250 ns. These parts are ROHS3 compliant and suitable for applications requiring enhanced switching performance.

Tertiary Recommendations: 1N4005 Series (Vishay, Micro Commercial Co, Good-Ark)

The 1N4005 series comprises standard-recovery general-purpose rectifier diodes rated for 600 V / 1 A. These parts are widely available from multiple manufacturers in active production status and ROHS3 compliant. Standard-recovery characteristics (trr > 500 ns) are appropriate for linear power supply and general rectification applications where switching frequency does not exceed typical 50/60 Hz line frequency operation. Forward voltage drop ranges from 1.0 V to 1.1 V at 1 A, which is lower than the PR1005L-T specification of 1.2 V, resulting in reduced power dissipation.

Alternative Consideration: 1N3613 Series

The 1N3613 from Microchip Technology and 1N3613GP-E3/54 from Vishay are standard-recovery diodes with 600 V / 1 A ratings. The 1N3613GP-E3/54 is ROHS3 compliant with active product status. The Microchip 1N3613 is RoHS non-compliant and should be selected only when legacy design requirements mandate this specific part number. Both variants feature lower forward voltage (1.0 to 1.1 V) and are suitable for general-purpose rectification.

Frequently Asked Questions (FAQ)

Q: Can the PR1005L-T be directly replaced with PR1005-T?

A: Yes. The PR1005-T is the direct equivalent of the PR1005L-T. Both parts share identical electrical specifications: 600 V reverse voltage, 1 A average rectified current, 1.2 V maximum forward voltage at 1 A, and 250 ns reverse recovery time. The only difference is packaging format (Tape & Reel for PR1005-T versus the obsolete PR1005L-T). No circuit modification is required.

Q: What is the difference between fast-recovery and standard-recovery diodes in this voltage/current class?

A: Fast-recovery diodes (PR1005L-T, 1N4937 series) have reverse recovery times of 200–250 ns and are optimized for switching applications. Standard-recovery diodes (1N4005 series, 1N3613 series) have reverse recovery times exceeding 500 ns and are optimized for linear rectification at line frequency. For 50/60 Hz power supply applications, standard-recovery diodes are functionally equivalent and offer lower forward voltage drop, reducing heat dissipation.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts except the Microchip 1N3613 (bulk packaging) are ROHS3 compliant. The 1N3613GP-E3/54 from Vishay is ROHS3 compliant. For new designs, ROHS3 compliance is standard across the 1N4005 series and Diodes Incorporated alternatives.

Q: What is the significance of the DO-41 package designation?

A: DO-41 is the industry standard through-hole axial package for general-purpose rectifier diodes in the 1 A current class. All substitute parts listed maintain DO-41 or equivalent DO-204AL package compatibility, ensuring mechanical interchangeability on printed circuit boards with standard 0.3-inch lead spacing.

Q: Can I use a 1N4005 in place of the PR1005L-T in a high-frequency switching application?

A: The 1N4005 standard-recovery characteristic (trr > 500 ns) is not optimized for high-frequency switching. For switching frequencies above 10 kHz, the 1N4937 series or PR1005-T fast-recovery variants are appropriate selections. Standard-recovery diodes in switching applications generate excessive reverse-recovery current and heat.

Q: What is the operating temperature range difference between PR1005L-T and 1N4005GP-E3/54?

A: The PR1005L-T operates from -65°C to 150°C junction temperature. The 1N4005GP-E3/54 operates from -65°C to 175°C, providing an extended upper temperature margin of 25°C. This extended range is beneficial for applications in high-ambient-temperature environments or where thermal margin is critical.

Q: Are there inventory considerations for substitute part selection?

A: Inventory levels vary significantly across substitute options. The 1N4005GP-E3/54 from Vishay maintains the highest inventory (60,913 pcs), followed by 1N4005-TP from Micro Commercial Co (110,625 pcs). PR1005-T and 1N4937G-T each maintain 5,200 pcs. High-inventory parts offer superior lead-time assurance for production requirements.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in three packaging formats: Tape & Reel (TR) for automated assembly, Cut Tape (CT) for manual or semi-automated assembly, and Bulk for manual insertion. Selection depends on assembly process requirements. All formats maintain identical electrical performance and DO-41 through-hole mechanical compatibility.

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