PR1004G-T Equivalent & Substitute Parts

Part Overview

The PR1004G-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 400 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This part is classified as Active and complies with ROHS3 standards. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or design flexibility across multiple suppliers.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	400 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the PR1004G-T are grouped based on strict electrical and mechanical parameter equivalence. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial

Secondary Parameters Affecting Compatibility:

Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A or lower
Speed Classification: Fast Recovery or Standard Recovery
Reverse Recovery Time (trr): Specified value
Current - Reverse Leakage @ Vr: 5 µA @ 400 V or lower
Operating Temperature - Junction: -65°C minimum, 150°C minimum

All substitute parts listed maintain the core electrical ratings and through-hole axial package format. Variations in forward voltage, recovery time, and temperature range are documented to enable informed selection based on application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	trr	Ir @ Vr	Tj (Min-Max)	Packaging
PR1004G-T	Diodes Incorporated	400 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150 ns	5 µA @ 400 V	-65°C ~ 150°C	Tape & Reel (TR)
UF1004-T	Diodes Incorporated	400 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	50 ns	5 µA @ 400 V	-65°C ~ 150°C	Cut Tape (CT)
RGP10G-E3/54	Vishay General Semiconductor - Diodes Division	400 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150 ns	5 µA @ 400 V	-65°C ~ 175°C	Cut Tape (CT)
RGP10GE-E3/54	Vishay General Semiconductor - Diodes Division	400 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150 ns	5 µA @ 400 V	-65°C ~ 175°C	Cut Tape (CT)
RGP10G	Fairchild Semiconductor	400 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	150 ns	5 µA @ 400 V	-65°C ~ 175°C	Bulk
1N4004-E3/54	Vishay General Semiconductor - Diodes Division	400 V	1 A	1.1 V @ 1 A	Standard Recovery >500ns	Not specified	5 µA @ 400 V	-55°C ~ 150°C	Cut Tape (CT)
1N4004-TP	Micro Commercial Co	400 V	1 A	1.1 V @ 1 A	Standard Recovery >500ns	2 µs	5 µA @ 400 V	-55°C ~ 150°C	Cut Tape (CT)
1N4004G	Rectron USA	400 V	1 A	1 V @ 1 A	Standard Recovery >500ns	Not specified	200 nA @ 400 V	-65°C ~ 175°C	Tape & Reel (TR)
1N4004GP-E3/54	Vishay General Semiconductor - Diodes Division	400 V	1 A	1.1 V @ 1 A	Standard Recovery >500ns	2 µs	5 µA @ 400 V	-65°C ~ 175°C	Cut Tape (CT)
1N4004GP-E3/73	Vishay General Semiconductor - Diodes Division	400 V	1 A	1.1 V @ 1 A	Standard Recovery >500ns	2 µs	5 µA @ 400 V	-65°C ~ 175°C	Cut Tape (CT)
1N4004GP-TP	Micro Commercial Co	400 V	1 A	1.1 V @ 1 A	Standard Recovery >500ns	2 µs	5 µA @ 400 V	-55°C ~ 150°C	Cut Tape (CT)

Engineering Selection Recommendations

Fast Recovery Equivalents (Recommended for Direct Replacement):

The UF1004-T, RGP10G-E3/54, RGP10GE-E3/54, and RGP10G maintain the fast recovery speed classification of the PR1004G-T with identical or superior reverse recovery time specifications. These parts are suitable for applications requiring fast switching characteristics and are all Active status products with ROHS3 compliance. The Vishay RGP10 series parts offer extended operating temperature range to 175°C compared to the PR1004G-T maximum of 150°C.

Standard Recovery Alternatives (Functional Equivalents):

The 1N4004 series parts (1N4004-E3/54, 1N4004-TP, 1N4004G, 1N4004GP-E3/54, 1N4004GP-E3/73, 1N4004GP-TP) maintain the 400 V / 1 A electrical ratings but operate with standard recovery speed classification (>500ns). These parts are suitable for applications where switching speed is not a critical constraint. All listed 1N4004 variants are Active status and ROHS3 compliant. The 1N4004G variant from Rectron USA includes AEC-Q101 automotive qualification and features lower reverse leakage current (200 nA @ 400 V) compared to standard specifications.

Packaging Considerations:

The PR1004G-T is supplied in Tape & Reel (TR) format. Equivalent parts in Cut Tape (CT) or Bulk packaging may require process adjustments for automated assembly. The UF1004-T and 1N4004G maintain TR packaging compatibility. All other listed substitutes are supplied in CT or Bulk formats.

Compliance and Regulatory Status:

All listed substitute parts maintain ROHS3 compliance and EAR99 export classification. Moisture Sensitivity Level (MSL) is rated as 1 (Unlimited) for all parts except RGP10G (Fairchild), which has vendor-undefined MSL specification.

Frequently Asked Questions (FAQ)

Q: Can the UF1004-T replace the PR1004G-T in all applications?

A: The UF1004-T is a parametric equivalent with identical voltage and current ratings, forward voltage, and operating temperature range. The primary difference is faster reverse recovery time (50 ns versus 150 ns) and different packaging format (Cut Tape versus Tape & Reel). Applications requiring fast switching will benefit from the improved recovery time. Packaging format may require process verification for automated assembly systems.

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

A: Fast recovery diodes (≤500ns) are designed for high-frequency switching applications and exhibit shorter reverse recovery time, reducing switching losses. Standard recovery diodes (>500ns) are suitable for lower-frequency applications and general-purpose rectification. The PR1004G-T is classified as fast recovery, while the 1N4004 series uses standard recovery. Selection depends on application switching frequency requirements.

Q: Are the 1N4004 series parts direct replacements for the PR1004G-T?

A: The 1N4004 series maintains the 400 V / 1 A electrical ratings and through-hole axial package format, making them functionally compatible. However, they operate with standard recovery speed rather than fast recovery. Forward voltage is lower (1.1 V versus 1.3 V), which may affect circuit performance in voltage-sensitive applications. These parts are suitable for general-purpose rectification where switching speed is not critical.

Q: Does the 1N4004G automotive qualification affect its use in non-automotive applications?

A: The 1N4004G includes AEC-Q101 automotive qualification, which indicates compliance with automotive reliability and quality standards. This qualification does not restrict use in non-automotive applications. The part is suitable for any application requiring 400 V / 1 A rectification. The automotive qualification provides additional assurance of manufacturing consistency and reliability.

Q: What packaging formats are available for these substitute parts?

A: The PR1004G-T is supplied in Tape & Reel (TR) format. Equivalent parts are available in Cut Tape (CT), Bulk, or TR formats depending on manufacturer and part number. Tape & Reel and Cut Tape formats are suitable for automated assembly. Bulk packaging is typically used for manual assembly or high-volume applications with custom packaging requirements. Verify packaging compatibility with assembly equipment before selection.

Q: Can I use parts with different operating temperature ranges interchangeably?

A: Operating temperature range specifications define the maximum junction temperature at which the part maintains rated electrical performance. The PR1004G-T is rated to 150°C junction temperature, while some substitutes extend to 175°C. Parts with higher temperature ratings provide additional thermal margin but do not restrict use in applications operating within the lower temperature range. Selection should be based on actual application thermal requirements.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current (Ir) represents the small current flowing through the diode in reverse bias condition. The PR1004G-T and most substitutes specify 5 µA @ 400 V. The 1N4004G specifies 200 nA @ 400 V, which is significantly lower. Lower reverse leakage is beneficial in high-impedance circuits or precision applications where leakage current may affect circuit performance. Standard applications are not affected by this difference.

Q: Are all listed parts ROHS3 compliant?

A: All listed substitute parts are confirmed ROHS3 compliant except RGP10G (Fairchild Semiconductor), which has vendor-undefined compliance status. ROHS3 compliance indicates the part does not contain restricted substances including lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers. Verify compliance documentation for RGP10G if ROHS3 certification is required for your application.

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