BYT56G-TAP Equivalent & Substitute Parts

Part Overview

The BYT56G-TAP is a 400V, 3A avalanche diode manufactured by Vishay General Semiconductor - Diodes Division, packaged in SOD-64 axial configuration for through-hole mounting. This component is classified as Active and RoHS3 compliant. Substitute parts are necessary when the BYT56G-TAP reaches end-of-life status, inventory constraints occur, or alternative packaging configurations are required for specific application requirements while maintaining electrical performance within specified parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.4 V @ 3 A	V
Reverse Recovery Time (trr)	100	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Mounting Type	Through Hole	-
Package / Case	SOD-64, Axial	-
Operating Temperature - Junction	-55 to 175	°C
Technology	Avalanche	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the BYT56G-TAP is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): 400 V minimum
Current - Average Rectified (Io): 3 A minimum
Voltage - Forward (Vf) (Max) @ If: Must not exceed application circuit requirements
Current - Reverse Leakage @ Vr: Must not exceed 5 µA @ 400 V for noise-sensitive applications
Reverse Recovery Time (trr): Fast recovery characteristics preferred for switching applications

Mechanical Compatibility Requirements:

Mounting Type: Through Hole (required for PCB compatibility)
Package / Case: Axial configuration (SOD-64, DO-27, DO-201AD, DO-201AA acceptable)
Operating Temperature - Junction: Must support -55°C minimum to 125°C minimum

Compliance Requirements:

RoHS3 Compliant status required
REACH Unaffected status required

The substitute parts listed below meet or exceed these parameters and are qualified for direct replacement in applications where the BYT56G-TAP is specified.

Parameter Comparison

Parameter	BYT56G-TAP (Main)	1N5404-G	1N5404G	1N5404RLG	EGP30G
Manufacturer	Vishay	Comchip Technology	onsemi	onsemi	onsemi
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.4 V @ 3 A	950 mV @ 3 A	1 V @ 3 A	1 V @ 3 A	1.25 V @ 3 A
Reverse Recovery Time (trr)	100 ns	-	-	-	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	5 µA @ 400 V
Speed Classification	Fast Recovery ≤ 500ns	Standard Recovery >500ns	Standard Recovery >500ns	Standard Recovery >500ns	Fast Recovery ≤ 500ns
Package / Case	SOD-64, Axial	DO-201AD, Axial	DO-201AA, DO-27, Axial	DO-201AA, DO-27, Axial	DO-201AD, Axial
Operating Temperature - Junction	-55 to 175°C	-65 to 125°C	-65 to 150°C	-65 to 150°C	-65 to 150°C
Product Status	Active	Active	Not For New Designs	Not For New Designs	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Tape & Box (TB)	Cut Tape (CT)	Bulk	Cut Tape (CT)	Cut Tape (CT)

Engineering Selection Recommendations

Primary Substitute - 1N5404-G (Comchip Technology): The 1N5404-G is the recommended primary substitute for the BYT56G-TAP. This part maintains identical voltage and current ratings (400V, 3A) with superior forward voltage characteristics (950 mV @ 3A versus 1.4V). The part is Active status, RoHS3 compliant, and available in high inventory (208,868 pcs). The DO-201AD package is mechanically compatible with through-hole PCB designs. Operating temperature range of -65 to 125°C covers standard industrial applications.

Secondary Substitute - EGP30G (onsemi): The EGP30G provides fast recovery characteristics (50 ns trr) matching the avalanche performance profile of the BYT56G-TAP. This part offers superior reverse recovery time and maintains 5 µA reverse leakage specification. However, EGP30G carries "Not For New Designs" status and has lower inventory availability (5,966 pcs). This substitute is suitable for legacy system maintenance and replacement applications where fast recovery performance is critical.

Alternative Substitutes - 1N5404G and 1N5404RLG (onsemi): Both onsemi parts (1N5404G and 1N5404RLG) meet voltage and current specifications but carry "Not For New Designs" status. These parts are suitable for field replacement and maintenance scenarios only. The 1N5404RLG offers better inventory availability (16,846 pcs) compared to 1N5404G (1,352 pcs). Both support extended operating temperature to 150°C.

Selection Criteria Summary:

For new designs: Select 1N5404-G (Active status, superior availability)
For legacy system maintenance: Select EGP30G (fast recovery performance) or 1N5404RLG (inventory availability)
All substitutes maintain RoHS3 compliance and REACH unaffected status
All substitutes support through-hole mounting on standard PCB layouts

Frequently Asked Questions (FAQ)

Q: Can the 1N5404-G directly replace the BYT56G-TAP in my circuit?

A: Yes. The 1N5404-G meets all critical electrical parameters: 400V reverse voltage, 3A average rectified current, and 5 µA reverse leakage at 400V. The forward voltage is lower (950 mV versus 1.4V), which reduces power dissipation. Both parts are through-hole axial diodes compatible with standard PCB layouts. Verify your PCB footprint accommodates the DO-201AD package dimensions.

Q: What is the difference between the BYT56G-TAP and EGP30G in terms of recovery speed?

A: The BYT56G-TAP features 100 ns reverse recovery time (fast recovery ≤ 500ns), while the EGP30G provides 50 ns reverse recovery time. The EGP30G offers superior switching performance for high-frequency applications. Both parts are classified as fast recovery diodes. The EGP30G is suitable for applications requiring faster switching transitions.

Q: Why do some substitute parts show "Not For New Designs" status?

A: "Not For New Designs" status indicates the manufacturer has discontinued active development and recommends alternative parts for new product designs. These parts remain available for field replacement and legacy system maintenance. For new designs, select the 1N5404-G, which carries Active status.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (1N5404-G, 1N5404G, 1N5404RLG, and EGP30G) are RoHS3 compliant and REACH unaffected, matching the compliance profile of the BYT56G-TAP.

Q: What is the difference between SOD-64 and DO-201AD packages?

A: Both are through-hole axial diode packages with identical electrical performance. SOD-64 and DO-201AD differ in physical dimensions and lead spacing. Verify your PCB footprint specifications before selecting a substitute. Standard through-hole PCB designs typically accommodate both package styles with minor layout adjustments.

Q: Can I use the 1N5404G or 1N5404RLG in new product designs?

A: No. Both parts carry "Not For New Designs" status. Use the 1N5404-G for new designs. The 1N5404G and 1N5404RLG are suitable for field replacement, maintenance, and legacy system support only.

Q: What is the operating temperature difference between the BYT56G-TAP and substitute parts?

A: The BYT56G-TAP operates from -55°C to 175°C. The 1N5404-G operates from -65°C to 125°C, while 1N5404G, 1N5404RLG, and EGP30G operate from -65°C to 150°C. For applications requiring operation above 150°C, the BYT56G-TAP is the only suitable option. For standard industrial temperature ranges (-40°C to 85°C), all substitutes are acceptable.

Q: How does forward voltage affect my circuit design?

A: The BYT56G-TAP has 1.4V forward voltage at 3A, while the 1N5404-G has 950 mV. Lower forward voltage reduces power dissipation and heat generation. If your circuit design includes voltage drop calculations or thermal management, the 1N5404-G provides improved efficiency. Verify your power supply and load requirements accommodate the lower voltage drop.

Q: Which substitute offers the best inventory availability?

A: The 1N5404-G offers the highest inventory availability with 208,868 pcs in stock. This ensures reliable supply for production and maintenance requirements. The 1N5404RLG provides secondary availability with 16,846 pcs.

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