BYT01-400RL Equivalent & Substitute Parts

Part Overview

The BYT01-400RL is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 400 V DC reverse voltage and 1 A average rectified current in a DO-15 (DO-204AC) axial through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part exhibits fast recovery characteristics with a reverse recovery time of 55 nanoseconds, suitable for standard rectification applications requiring moderate switching speeds.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 1 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	55	ns
Current - Reverse Leakage @ Vr	20	µA @ 400 V
Package / Case	DO-204AC, DO-15, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-40 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BYT01-400RL is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 400 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Package / Case: Must be compatible with DO-15 (DO-204AC) or equivalent axial through-hole form factor
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Secondary Compatibility Factors:

Operating Temperature Range: Must accommodate the application's thermal requirements
Forward Voltage (Vf): Lower values indicate improved efficiency but do not prevent substitution
Reverse Recovery Time (trr): Faster recovery (lower values) is acceptable; slower recovery may impact high-frequency performance
Reverse Leakage Current: Lower values indicate superior performance but do not prevent substitution

Substitute parts are grouped into two categories:

Category A: Direct Electrical Equivalents (1 A, 400 V, DO-41 Package) Parts with identical voltage and current ratings but packaged in DO-204AL (DO-41) axial form factor. These are mechanically compatible with through-hole PCB layouts designed for axial components.

Category B: Higher Current Capability (1.5 A, 400 V, DO-15 Package) Parts with superior current rating (1.5 A) in the original DO-15 package, providing enhanced thermal margin and current capacity while maintaining voltage compatibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]	Status
BYT01-400RL	STMicroelectronics	400	1	1.5 @ 1 A	Fast Recovery ≤ 500ns	55	20 @ 400 V	DO-15	-40 to 150	Obsolete
1N4004-E3/53	Vishay	400	1	1.1 @ 1 A	Standard Recovery >500ns	—	5 @ 400 V	DO-41	-50 to 150	Active
1N4004-E3/73	Vishay	400	1	1.1 @ 1 A	Standard Recovery >500ns	—	5 @ 400 V	DO-41	-55 to 150	Active
1N4004E-E3/53	Vishay	400	1	1.1 @ 1 A	Standard Recovery >500ns	—	5 @ 400 V	DO-41	-50 to 150	Active
1N4246GP-E3/54	Vishay	400	1	1.2 @ 1 A	Standard Recovery >500ns	—	1 @ 400 V	DO-41	-65 to 160	Active
1N4246GP-E3/73	Vishay	400	1	1.2 @ 1 A	Standard Recovery >500ns	—	1 @ 400 V	DO-41	-65 to 160	Active
1N5395G B0G	Taiwan Semiconductor Corporation	400	1.5	1 @ 1.5 A	Standard Recovery >500ns	—	5 @ 400 V	DO-15	-55 to 150	Active
1N5395GHA0G	Taiwan Semiconductor Corporation	400	1.5	1 @ 1.5 A	Standard Recovery >500ns	—	5 @ 400 V	DO-15	-55 to 150	Active
EGP10G	Fairchild Semiconductor	400	1	1.25 @ 1 A	Fast Recovery ≤ 500ns	50	5 @ 400 V	DO-41	-65 to 150	Active
EGP10G-E3/54	Vishay	400	1	1.25 @ 1 A	Fast Recovery ≤ 500ns	50	5 @ 400 V	DO-41	-65 to 150	Active
EGP10G-E3/73	Vishay	400	1	1.25 @ 1 A	Fast Recovery ≤ 500ns	50	5 @ 400 V	DO-41	-65 to 150	Active

Engineering Selection Recommendations

For Direct Replacement (Same Package, Same Current Rating):

The 1N5395G B0G and 1N5395GHA0G are the preferred substitutes when package compatibility with DO-15 (DO-204AC) axial through-hole form factor is required. Both parts are manufactured by Taiwan Semiconductor Corporation and are in active production status. These parts maintain the original package geometry while providing 1.5 A current capability, exceeding the BYT01-400RL's 1 A rating. The 1N5395GHA0G variant includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability.

For Alternative Package Configurations (DO-41 Axial):

The EGP10G-E3/54 and EGP10G-E3/73 (Vishay SUPERECTIFIER® series) provide fast recovery characteristics matching the BYT01-400RL's 55 ns reverse recovery time specification. These parts are rated for 1 A at 400 V and are available in active production status. The fast recovery performance makes these suitable for applications sensitive to switching speed.

The 1N4004-E3/53, 1N4004-E3/73, and 1N4004E-E3/53 (Vishay 1N4004 series) provide standard recovery performance with lower forward voltage (1.1 V) and reduced reverse leakage current (5 µA). These parts are suitable for applications where switching speed is not critical and efficiency improvement is desired.

The 1N4246GP-E3/54 and 1N4246GP-E3/73 (Vishay SUPERECTIFIER® series) offer the lowest reverse leakage current (1 µA) and extended operating temperature range (-65°C to 160°C), providing superior performance margins for demanding applications.

Compliance and Certification:

All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the BYT01-400RL. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Frequently Asked Questions (FAQ)

Q: Can I use a DO-41 package diode as a direct replacement for the DO-15 package BYT01-400RL?

A: DO-41 and DO-15 are both axial through-hole packages with identical lead spacing and mounting compatibility on standard PCB layouts. The primary difference is physical body diameter. Parts such as 1N4004-E3/53, EGP10G-E3/54, and 1N4246GP-E3/54 are electrically equivalent and mechanically compatible with PCB designs originally specified for DO-15 packages.

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

A: The BYT01-400RL exhibits fast recovery characteristics with a 55 nanosecond reverse recovery time. The 1N4004 series and 1N4246 series are classified as standard recovery (>500 ns). Fast recovery diodes are preferred in high-frequency switching applications. Standard recovery diodes are suitable for lower-frequency rectification where switching speed is not a limiting factor.

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

A: Forward voltage (Vf) varies with semiconductor material quality and manufacturing process. The 1N4004 series exhibits 1.1 V forward voltage compared to the BYT01-400RL's 1.5 V. Lower forward voltage indicates improved efficiency and reduced power dissipation. This is a performance advantage and does not prevent substitution.

Q: Are the 1N5395G and 1N5395GHA0G parts interchangeable?

A: Both parts are rated for 400 V and 1.5 A in DO-15 packages. The 1N5395GHA0G includes AEC-Q101 automotive qualification. They are electrically equivalent. Selection depends on whether automotive-grade certification is required for the application.

Q: What does the packaging designation (CT, TR, TB) mean?

A: CT = Cut Tape, TR = Tape & Reel, TB = Tape & Box. These designations describe the form in which components are supplied. Cut Tape is suitable for small quantities and manual assembly. Tape & Reel is optimized for automated pick-and-place assembly. Tape & Box combines reel packaging with box containment. All three formats contain electrically identical components.

Q: Can I substitute a 1.5 A rated diode for a 1 A rated application?

A: Yes. The 1N5395G and 1N5395GHA0G are rated for 1.5 A, exceeding the BYT01-400RL's 1 A requirement. Higher current rating provides thermal margin and improved reliability in the application. This is a conservative substitution.

Q: What is the significance of the operating temperature range difference?

A: The BYT01-400RL operates from -40°C to 150°C. Substitute parts such as 1N4246GP-E3/54 extend this to -65°C to 160°C. Extended temperature range provides design flexibility for applications operating in extreme thermal environments. If the application operates within the BYT01-400RL's original range, the extended range of substitute parts does not affect compatibility.

Q: Are all listed substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the BYT01-400RL.

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