D2G-T Equivalent & Substitute Parts

Part Overview

The D2G-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 1 A average rectified current. The device features standard recovery characteristics with a reverse recovery time of 2 µs and is housed in a T-1 axial through-hole package. The D2G-T maintains Active product status and is ROHS3 compliant.

Substitute parts are necessary when the T-1 package form factor is not required, when alternative packaging formats (Cut Tape or different tape specifications) are preferred, or when sourcing from alternative manufacturers is required for supply chain optimization. Substitute devices must maintain electrical equivalence across voltage, current, and thermal specifications while accommodating different physical package configurations.

Key Parameters

Parameter	D2G-T Specification
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A
Speed Classification	Standard Recovery >500ns, > 200mA (Io)
Reverse Recovery Time (trr)	2 µs
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Through Hole
Package / Case	T1, Axial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the D2G-T is determined by electrical parameter equivalence within the following criteria:

Primary Electrical Equivalence Requirements:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 1 A
Speed Classification: Standard Recovery (>500ns) or Fast Recovery (≤500ns)
Mounting Type: Through Hole
Operating Temperature Range: Must encompass or exceed -65°C minimum and 150°C maximum

Secondary Compatibility Factors:

Forward voltage (Vf) tolerance: Acceptable range 1.0 V to 1.2 V @ 1 A
Reverse leakage current: 5 µA to 10 µA @ 100 V
Package configuration: DO-204AL (DO-41) or T1 axial formats
Compliance: ROHS3 and REACH Unaffected status

Substitute parts are grouped into two categories: Standard Recovery devices (matching the D2G-T recovery speed) and Fast Recovery devices (1N4934 series). Fast Recovery variants are electrically compatible but feature reduced reverse recovery time (200 ns versus 2 µs), making them suitable for applications where faster switching is beneficial or neutral.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ 1A	Speed	trr	Ir @ Vr	Tj (Min~Max)	Package	Status
D2G-T	Diodes Incorporated	100 V	1 A	1 V	Standard >500ns	2 µs	5 µA @ 100V	-65~150°C	T1, Axial	Active
1N4002-E3/53	Vishay General Semiconductor	100 V	1 A	1.1 V	Standard >500ns	—	5 µA @ 100V	-50~150°C	DO-204AL (DO-41)	Active
1N4002-E3/54	Vishay General Semiconductor	100 V	1 A	1.1 V	Standard >500ns	—	5 µA @ 100V	-55~150°C	DO-204AL (DO-41)	Active
1N4002-E3/73	Vishay General Semiconductor	100 V	1 A	1.1 V	Standard >500ns	—	5 µA @ 100V	-55~150°C	DO-204AL (DO-41)	Active
1N4002-TP	Micro Commercial Co	100 V	1 A	1.1 V	Standard >500ns	2 µs	5 µA @ 100V	-55~150°C	DO-204AL (DO-41)	Not For New Designs
1N4002G	Taiwan Semiconductor Corporation	100 V	1 A	1 V	Standard >500ns	—	5 µA @ 100V	-55~150°C	DO-204AL (DO-41)	Active
1N4002GP-E3/54	Vishay General Semiconductor	100 V	1 A	1.1 V	Standard >500ns	2 µs	5 µA @ 100V	-65~175°C	DO-204AL (DO-41)	Active
1N4002RLG	onsemi	100 V	1 A	1.1 V	Standard >500ns	—	10 µA @ 100V	-65~175°C	DO-204AL (DO-41)	Not For New Designs
1N4934-E3/54	Vishay General Semiconductor	100 V	1 A	1.2 V	Fast ≤500ns	200 ns	5 µA @ 100V	-50~150°C	DO-204AL (DO-41)	Active
1N4934-E3/73	Vishay General Semiconductor	100 V	1 A	1.2 V	Fast ≤500ns	200 ns	5 µA @ 100V	-50~150°C	DO-204AL (DO-41)	Active
1N4934G	Taiwan Semiconductor Corporation	100 V	1 A	1.2 V	Fast ≤500ns	200 ns	5 µA @ 100V	-55~150°C	DO-204AL (DO-41)	Active

Engineering Selection Recommendations

Standard Recovery Substitutes (Electrically Equivalent Speed Classification):

The 1N4002 series devices (1N4002-E3/53, 1N4002-E3/54, 1N4002-E3/73, 1N4002G, and 1N4002GP-E3/54) maintain standard recovery characteristics matching the D2G-T and are suitable for direct substitution in applications where recovery speed is a design requirement. Among these, 1N4002-E3/54, 1N4002-E3/73, and 1N4002G carry Active product status and are recommended for new designs. The 1N4002GP-E3/54 variant offers extended operating temperature range (-65°C to 175°C) and is designated as SUPERECTIFIER®, providing enhanced thermal performance.

The 1N4002-TP (Micro Commercial Co) and 1N4002RLG (onsemi) are marked as Not For New Designs and should be avoided in new circuit development, though they remain electrically compatible for legacy system maintenance.

Fast Recovery Substitutes (Enhanced Switching Performance):

The 1N4934 series (1N4934-E3/54, 1N4934-E3/73, and 1N4934G) feature fast recovery characteristics (200 ns trr) and are electrically compatible with the D2G-T. These devices are suitable for applications requiring faster switching transitions or where reduced reverse recovery losses are beneficial. All 1N4934 variants maintain Active product status.

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the D2G-T regulatory profile. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all substitutes, indicating no moisture-related handling restrictions.

Package Considerations:

The D2G-T is supplied in T-1 axial through-hole format. All substitute parts are available in DO-204AL (DO-41) axial through-hole configuration, which is mechanically compatible with standard PCB through-hole mounting. Physical dimensions differ between T-1 and DO-41 packages; PCB layout verification is required when substituting.

Frequently Asked Questions (FAQ)

Q: Can the 1N4002 series directly replace the D2G-T in all applications?

A: Yes, the 1N4002 series maintains electrical equivalence across voltage (100 V), current (1 A), and speed (standard recovery) specifications. Physical package differences (DO-41 versus T-1) require PCB layout verification but do not affect electrical performance in through-hole mounting applications.

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

A: Standard recovery diodes (D2G-T, 1N4002 series) exhibit reverse recovery times of 2 µs or greater. Fast recovery diodes (1N4934 series) have reverse recovery times of 200 ns. Fast recovery devices reduce switching losses and are suitable for higher-frequency applications. Both types are electrically compatible at 100 V / 1 A ratings.

Q: Why are some substitute parts marked "Not For New Designs"?

A: Parts designated as Not For New Designs (1N4002-TP, 1N4002RLG) remain electrically functional but are being phased out by manufacturers. New circuit designs should utilize Active status parts (1N4002-E3/54, 1N4002-E3/73, 1N4002G, 1N4002GP-E3/54) to ensure long-term supply availability and manufacturing consistency.

Q: Does forward voltage variation (1.0 V to 1.2 V) affect circuit performance?

A: Forward voltage differences within the 1.0 V to 1.2 V range at 1 A are within standard rectifier tolerances. Applications with tight voltage regulation requirements should account for this variation in power supply design. The D2G-T and 1N4002G specify 1.0 V, while 1N4002 variants specify 1.1 V and 1N4934 variants specify 1.2 V.

Q: Are there thermal performance differences between substitutes?

A: Yes. The 1N4002GP-E3/54 operates to 175°C junction temperature (versus 150°C for most alternatives) and is rated for -65°C minimum (matching the D2G-T). Applications requiring extended thermal range should specify 1N4002GP-E3/54 or 1N4002RLG (-65°C to 175°C).

Q: What packaging formats are available for these substitutes?

A: The D2G-T is supplied in Tape & Reel (TR) format. Substitute parts are available in Cut Tape (CT) format (1N4002-E3/53, 1N4002-E3/54, 1N4002-E3/73, 1N4002-TP, 1N4002GP-E3/54, 1N4002RLG, 1N4934-E3/54, 1N4934-E3/73) or Tape & Reel format (1N4002G, 1N4934G). Packaging format selection depends on assembly process requirements and volume.

Q: Is the 1N4934 series suitable for low-frequency rectification applications?

A: Yes. The 1N4934 series maintains full electrical compatibility at 100 V / 1 A ratings and operates correctly in low-frequency applications. The fast recovery characteristic provides no disadvantage in low-frequency circuits and offers potential benefits in mixed-signal designs where switching speed is relevant to other circuit elements.

Q: How do I verify PCB compatibility when substituting from T-1 to DO-41 package?

A: Both T-1 and DO-41 are axial through-hole packages with identical electrical connection methodology (anode and cathode leads). Physical dimensions differ: verify that PCB hole spacing and component clearances accommodate the DO-41 form factor. Consult package datasheets for precise dimensional specifications.

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