D7G-T Equivalent & Substitute Parts

Part Overview

The D7G-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 1000 V DC reverse voltage and 1 A average rectified current. This through-hole axial component operates across a junction temperature range of -65°C to 150°C and is classified as Active product status with ROHS3 compliance. The T-1 package format and standard recovery characteristics make this diode suitable for general rectification applications in power supply circuits and similar designs. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and thermal operating ranges to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 1 A
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	5	µA @ 1000 V
Capacitance @ Vr, F	8	pF @ 4V, 1MHz
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Through Hole	-
Package / Case	T1, Axial	-
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the D7G-T are grouped based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 1000 V
Current - Average Rectified (Io): 1 A
Mounting Type: Through Hole
Technology: Standard
Recovery Speed: Standard Recovery >500ns, > 200mA (Io)

Secondary Compatibility Factors:

Forward voltage (Vf) within acceptable range for rectification circuits
Reverse leakage current at rated voltage
Operating temperature range compatibility
RoHS3 compliance and regulatory status

Substitute parts are classified into two categories: Direct Axial Package Equivalents (matching T-1 or DO-41 axial format) and Alternative Package Variants (DO-204AL format with equivalent electrical performance). All listed substitutes maintain the 1000 V / 1 A rating and standard recovery characteristics required for functional equivalence.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ 1A (V)	trr (µs)	Ir @ Vr (µA)	Package	Temp Range (°C)	Product Status
D7G-T	Diodes Incorporated	1000	1	1.0	2	5 @ 1000V	T1, Axial	-65 to 150	Active
1N4007-E3/73	Vishay General Semiconductor	1000	1	1.1	-	5 @ 1000V	DO-204AL, DO-41	-50 to 150	Active
1N4007-TP	Micro Commercial Co	1000	1	1.1	2	5 @ 1000V	DO-204AL, DO-41	-55 to 150	Active
1N4007FFG	onsemi	1000	1	1.1	-	10 @ 1000V	DO-204AL, DO-41, Axial	-65 to 175	Not For New Designs
1N4007G	Taiwan Semiconductor Corporation	1000	1	1.0	-	5 @ 1000V	DO-204AL, DO-41	-55 to 150	Active
1N4007GP-E3/54	Vishay General Semiconductor	1000	1	1.1	2	5 @ 1000V	DO-204AL, DO-41	-50 to 150	Active
1N4007GP-E3/73	Vishay General Semiconductor	1000	1	1.1	2	5 @ 1000V	DO-204AL, DO-41	-65 to 175	Active
1N4007GP-TP	Micro Commercial Co	1000	1	1.1	2	5 @ 1000V	DO-204AL, DO-41	-55 to 150	Active
1N4007RLG	onsemi	1000	1	1.1	-	10 @ 1000V	DO-204AL, DO-41, Axial	-65 to 175	Not For New Designs
1N4249GP-E3/54	Vishay General Semiconductor	1000	1	1.2	-	1 @ 1000V	DO-204AL, DO-41	-65 to 160	Active
1N4948GP-E3/54	Vishay General Semiconductor	1000	1	1.3	0.5	1 @ 1000V	DO-204AL, DO-41	-65 to 175	Active

Engineering Selection Recommendations

Primary Substitutes (Active Product Status, Recommended for New Designs):

The 1N4007 series variants from Vishay General Semiconductor (1N4007-E3/73, 1N4007GP-E3/54, 1N4007GP-E3/73) and Micro Commercial Co (1N4007-TP, 1N4007GP-TP) are direct functional equivalents to the D7G-T. These parts maintain identical 1000 V / 1 A ratings, standard recovery characteristics, and ROHS3 compliance. The 1N4007G from Taiwan Semiconductor Corporation provides equivalent electrical performance with Active product status. All these options are suitable for new circuit designs and production applications.

Secondary Substitutes (Extended Temperature Range):

The 1N4007GP-E3/73 variant extends the upper junction temperature limit to 175°C compared to the D7G-T's 150°C maximum, providing enhanced thermal margin for high-temperature environments while maintaining all other electrical specifications.

Alternative Technology Options:

The 1N4249GP-E3/54 and 1N4948GP-E3/54 represent alternative rectifier technologies with different recovery characteristics. The 1N4249GP-E3/54 maintains standard recovery speed with lower reverse leakage (1 µA versus 5 µA). The 1N4948GP-E3/54 features fast recovery (500 ns) and is suitable for applications requiring faster switching performance, though this represents a technology change from the D7G-T's standard recovery specification.

Obsolescence Considerations:

The 1N4007FFG and 1N4007RLG from onsemi carry "Not For New Designs" product status and should not be selected for new circuit development, though they remain functionally equivalent for legacy system maintenance.

Frequently Asked Questions (FAQ)

Q: Can the D7G-T be directly replaced with any 1N4007 variant?

A: Yes, all 1N4007 variants listed with Active product status (1N4007-E3/73, 1N4007-TP, 1N4007G, 1N4007GP-E3/54, 1N4007GP-E3/73, 1N4007GP-TP) are direct functional replacements. They share identical 1000 V reverse voltage and 1 A current ratings with compatible forward voltage characteristics. Package format differences (T-1 axial versus DO-41 axial) do not affect electrical performance, only physical board layout considerations.

Q: What is the difference between the T-1 package on the D7G-T and the DO-41 package on substitute parts?

A: Both T-1 and DO-41 are axial through-hole package formats with identical lead spacing and mounting characteristics. The primary difference is the cylindrical body diameter and length, which does not affect electrical performance or circuit functionality. Board layout and component spacing must accommodate the physical dimensions of the selected package variant.

Q: Why do some substitute parts show higher reverse leakage current (10 µA versus 5 µA)?

A: The 1N4007FFG and 1N4007RLG variants exhibit 10 µA reverse leakage at 1000 V compared to the D7G-T's 5 µA specification. This difference remains within acceptable limits for general-purpose rectification applications and does not prevent functional substitution. However, for applications with strict leakage current requirements, the 5 µA variants are preferred.

Q: Can the D7G-T be replaced with the 1N4948GP-E3/54 fast recovery diode?

A: The 1N4948GP-E3/54 is electrically compatible with the D7G-T in terms of voltage and current ratings. However, it features fast recovery (500 ns) instead of standard recovery (2 µs), representing a technology change. This substitution is valid only if the circuit design can accommodate faster switching characteristics. Applications sensitive to recovery time behavior should retain the standard recovery specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts carry ROHS3 Compliant status, matching the D7G-T's regulatory compliance. All parts are also REACH Unaffected and classified under ECCN EAR99, maintaining consistent regulatory and export control status.

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

A: The D7G-T operates from -65°C to 150°C junction temperature. Some substitutes extend this range to 175°C (1N4007FFG, 1N4007RLG, 1N4007GP-E3/73, 1N4948GP-E3/54), providing additional thermal margin for high-temperature applications. Others limit the upper range to 150°C or 160°C. Selection should match the circuit's actual thermal requirements; extended range variants are beneficial for high-temperature environments but not necessary for standard applications.

Q: Which substitute part offers the best overall compatibility with the D7G-T?

A: The 1N4007GP-E3/73 from Vishay General Semiconductor provides the closest overall match, offering identical forward voltage (1.1 V), matching reverse recovery time (2 µs), equivalent reverse leakage (5 µA), and extended temperature range (-65°C to 175°C). This part is Active product status and widely available in production quantities.

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