1N5393S-T Equivalent & Substitute Parts

Part Overview

The 1N5393S-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 200 V DC reverse voltage and 1.5 A average rectified current in a DO-41 through-hole axial package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging options.

Key Parameters

Parameter	1N5393S-T
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A
Speed	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 200 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 1N5393S-T are grouped based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 1.5 A or greater
Mounting Type: Through Hole
Package / Case: DO-41, DO-204AL, or DO-204AC (axial configurations)
RoHS Status: ROHS3 Compliant

Secondary Compatibility Factors:

Forward voltage (Vf) within acceptable operating range
Reverse leakage current specifications
Operating temperature range compatibility
Recovery speed characteristics (standard or fast recovery acceptable)

Substitutes are divided into two categories:

Category A - Direct Current Rating Match (1.5 A): Parts rated for 1.5 A average rectified current in compatible packages (RGP15D-E3/54, RGP15D-E3/73, GP15D-E3/54, STTH1R02).

Category B - Reduced Current Rating (1.0 A): Parts rated for 1.0 A average rectified current, suitable for applications where the full 1.5 A capability is not required (1N4003G, 1N4003RLG, 1N4935G, GP10D-E3/73, SF14GHR1G).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Speed	Package	Temp Range	Product Status
1N5393S-T	Diodes Incorporated	200 V	1.5	1.1 V @ 1.5 A	Standard >500ns	DO-41	-65°C ~ 150°C	Obsolete
STTH1R02	STMicroelectronics	200 V	1.5	1.0 V @ 1.5 A	Fast ≤500ns	DO-41	-55°C ~ 175°C	Active
RGP15D-E3/54	Vishay General Semiconductor	200 V	1.5	1.3 V @ 1.5 A	Fast ≤500ns	DO-15	-65°C ~ 175°C	Active
RGP15D-E3/73	Vishay General Semiconductor	200 V	1.5	1.3 V @ 1.5 A	Fast ≤500ns	DO-15	-65°C ~ 175°C	Active
GP15D-E3/54	Vishay General Semiconductor	200 V	1.5	1.1 V @ 1.5 A	Standard >500ns	DO-15	-65°C ~ 175°C	Active
1N4003G	Taiwan Semiconductor Corporation	200 V	1.0	1.0 V @ 1 A	Standard >500ns	DO-41	-55°C ~ 150°C	Active
1N4003RLG	onsemi	200 V	1.0	1.1 V @ 1 A	Standard >500ns	DO-41	-65°C ~ 175°C	Not For New Designs
1N4935G	Taiwan Semiconductor Corporation	200 V	1.0	1.2 V @ 1 A	Fast ≤500ns	DO-41	-55°C ~ 150°C	Active
GP10D-E3/73	Vishay General Semiconductor	200 V	1.0	1.1 V @ 1 A	Standard >500ns	DO-41	-65°C ~ 175°C	Active
SF14GHR1G	Taiwan Semiconductor Corporation	200 V	1.0	950 mV @ 1 A	Fast ≤500ns	DO-41	-55°C ~ 150°C	Active

Engineering Selection Recommendations

For Direct Replacement (1.5 A Rating):

STTH1R02 (STMicroelectronics) is the primary direct substitute for the 1N5393S-T. This part maintains the 1.5 A current rating, 200 V reverse voltage specification, and DO-41 package configuration. STTH1R02 is active in production status and ROHS3 compliant. The forward voltage is lower (1.0 V @ 1.5 A versus 1.1 V), and recovery speed is fast (≤500ns), providing improved thermal performance. Operating temperature range extends to 175°C maximum junction temperature.

RGP15D-E3/54 and RGP15D-E3/73 (Vishay General Semiconductor) provide 1.5 A rated alternatives in DO-15 package configuration. Both parts are active, ROHS3 compliant, and feature fast recovery characteristics (≤500ns, 150 ns reverse recovery time). These parts accommodate applications where DO-15 axial packaging is acceptable. Forward voltage is 1.3 V @ 1.5 A.

GP15D-E3/54 (Vishay General Semiconductor) offers 1.5 A rating with standard recovery speed (>500ns) matching the original part's recovery characteristics. This part is active and ROHS3 compliant in DO-15 package.

For Reduced Current Applications (1.0 A Rating):

1N4003G (Taiwan Semiconductor Corporation) is an active, ROHS3 compliant substitute suitable for applications requiring 1.0 A maximum current. This part maintains 200 V reverse voltage, DO-41 package, and standard recovery speed. Forward voltage is 1.0 V @ 1 A.

1N4935G (Taiwan Semiconductor Corporation) provides 1.0 A rating with fast recovery characteristics (≤500ns, 200 ns reverse recovery time). This part is active and ROHS3 compliant in DO-41 package.

GP10D-E3/73 (Vishay General Semiconductor) is an active substitute rated for 1.0 A with standard recovery speed. Operating temperature range extends to 175°C maximum junction temperature.

SF14GHR1G (Taiwan Semiconductor Corporation) is an automotive-qualified part (AEC-Q101) rated for 1.0 A with fast recovery (≤500ns, 35 ns reverse recovery time). This part is suitable for automotive applications requiring enhanced reliability qualification.

Parts to Avoid:

1N4003RLG (onsemi) carries "Not For New Designs" product status and should not be selected for new applications.

Frequently Asked Questions (FAQ)

Q: Can I use a 1.0 A rated diode as a substitute for the 1.5 A rated 1N5393S-T?

A: Substitution with 1.0 A rated parts is permissible only if the application circuit does not require the full 1.5 A current capacity. The 1.0 A rated alternatives (1N4003G, 1N4935G, GP10D-E3/73, SF14GHR1G) maintain the 200 V reverse voltage specification and through-hole mounting configuration. Circuit design review is necessary to confirm that peak and average current demands do not exceed 1.0 A.

Q: What is the difference between DO-41 and DO-15 packages?

A: DO-41 and DO-15 are both axial through-hole packages for diodes. DO-41 (DO-204AL) and DO-15 (DO-204AC) differ in physical dimensions and lead spacing. Both are compatible with standard through-hole PCB layouts. Verify PCB footprint compatibility before selecting parts with different package designations.

Q: Why do some substitute parts have lower forward voltage specifications?

A: Forward voltage variation reflects differences in semiconductor material quality, doping profiles, and manufacturing processes across manufacturers. Lower forward voltage (such as STTH1R02 at 1.0 V versus 1N5393S-T at 1.1 V) indicates improved efficiency and reduced power dissipation. This is a beneficial characteristic in most applications.

Q: Are fast recovery diodes interchangeable with standard recovery diodes?

A: Fast recovery diodes (≤500ns reverse recovery time) are generally interchangeable with standard recovery diodes (>500ns) in most applications. Fast recovery diodes provide reduced switching losses and improved thermal performance. Standard recovery diodes may be substituted for fast recovery types if circuit switching frequency and thermal constraints permit.

Q: What does "Not For New Designs" product status mean?

A: "Not For New Designs" indicates that the manufacturer no longer recommends the part for new circuit designs, though existing inventory may remain available. Parts with this status should be avoided in new product development. Active status parts are preferred for all new applications.

Q: Is the 1N5393S-T compatible with automotive applications?

A: The 1N5393S-T does not carry automotive qualification markings. For automotive applications requiring AEC-Q101 qualification, SF14GHR1G (Taiwan Semiconductor Corporation) is the qualified substitute option.

Q: Can I substitute parts with different operating temperature ranges?

A: Operating temperature range substitution is permissible if the application's maximum junction temperature requirement does not exceed the substitute part's rated maximum. The 1N5393S-T operates to 150°C maximum. Substitutes with extended ranges (such as 175°C maximum) provide additional thermal margin and are acceptable. Substitutes with lower maximum temperatures (such as 150°C) are acceptable only if application thermal analysis confirms junction temperature will not exceed the substitute's rating.

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