BYX82TAP Equivalent & Substitute Parts

Part Overview

The BYX82TAP is an avalanche diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V DC reverse voltage and 2 A average rectified current in a through-hole SOD-57 axial package. This component is classified as Active product status and is RoHS3 compliant.

Substitute parts become necessary when the BYX82TAP reaches end-of-life inventory depletion, when alternative packaging formats are required for manufacturing compatibility, or when sourcing from multiple suppliers is required for supply chain resilience. The substitute parts listed maintain electrical equivalence across the critical parameters of reverse voltage rating, average rectified current, and through-hole mounting configuration.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	V @ A
Reverse Recovery Time (trr)	4	µs
Current - Reverse Leakage @ Vr	1	µA @ 200 V
Mounting Type	Through Hole	-
Package / Case	SOD-57, Axial	-
Operating Temperature - Junction	-55°C ~ 175°C	°C
Technology	Avalanche	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the BYX82TAP is determined by strict equivalence across the following critical parameters:

Mandatory Electrical Equivalence:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 2 A
Mounting Type: Through Hole

Acceptable Variation Parameters:

Voltage - Forward (Vf): Substitute parts may operate at different forward voltage ratings provided they do not exceed the maximum specified for the application circuit
Reverse Recovery Time (trr): Substitute parts with faster recovery characteristics (lower trr values) are acceptable as they represent improved performance
Current - Reverse Leakage: Substitute parts with lower reverse leakage current are acceptable
Package / Case: Alternative through-hole axial packages (DO-15, DO-41) are acceptable provided PCB footprint compatibility is verified
Operating Temperature Range: Substitute parts with equal or wider temperature ranges are acceptable
Product Status: Active status is preferred; Not For New Designs status indicates phase-out but does not preclude substitution for existing designs

The substitute parts EGP20D and MUR220RLG both meet the mandatory electrical equivalence criteria and are therefore valid substitutes for the BYX82TAP.

Parameter Comparison

Parameter	BYX82TAP (Vishay)	EGP20D (onsemi)	MUR220RLG (onsemi)
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	950 mV @ 2 A	950 mV @ 2 A
Reverse Recovery Time (trr)	4 µs	50 ns	35 ns
Current - Reverse Leakage @ Vr	1 µA @ 200 V	5 µA @ 200 V	2 µA @ 200 V
Capacitance @ Vr, F	20 pF @ 4V, 1MHz	70 pF @ 4V, 1MHz	Not Specified
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	SOD-57, Axial	DO-204AC, DO-15, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 175°C	-65°C ~ 150°C	-65°C ~ 175°C
Technology	Avalanche	Standard	Standard
Product Status	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MUR220RLG (onsemi) - Primary Substitute:

The MUR220RLG is the preferred substitute for the BYX82TAP. This part maintains Active product status, indicating ongoing manufacturer support and availability. It meets all mandatory electrical parameters: 200 V reverse voltage rating and 2 A average rectified current. The MUR220RLG operates across the full temperature range of -65°C to 175°C, matching the upper limit of the BYX82TAP. The part is RoHS3 compliant and REACH unaffected. The DO-41 axial package provides mechanical compatibility with standard through-hole PCB layouts. Reverse recovery time of 35 ns represents improved switching performance compared to the BYX82TAP's 4 µs specification.

EGP20D (onsemi) - Secondary Substitute:

The EGP20D is an acceptable substitute that meets all mandatory electrical parameters. However, this part carries Not For New Designs product status, indicating manufacturer phase-out. The EGP20D is suitable for sustaining existing production runs or field replacements where inventory is available. The DO-15 package differs from the SOD-57 package; PCB footprint compatibility must be verified before implementation. Operating temperature range is -65°C to 150°C, which does not extend to the upper limit of the BYX82TAP. Reverse recovery time of 50 ns provides improved switching performance. RoHS3 compliance and REACH unaffected status are maintained.

Compliance Summary:

Both substitute parts are RoHS3 compliant and REACH unaffected, matching the environmental and regulatory status of the BYX82TAP. Both are classified under ECCN EAR99 and HTSUS 8541.10.0080, consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can the EGP20D be used as a direct replacement for the BYX82TAP without PCB modifications?

A: The EGP20D uses a DO-15 package while the BYX82TAP uses SOD-57. Both are through-hole axial packages, but the physical dimensions differ. PCB footprint compatibility must be verified. If the PCB is designed specifically for SOD-57 spacing, the EGP20D may not fit without layout modifications.

Q: What is the significance of the BYX82TAP being an avalanche diode while the substitutes are standard diodes?

A: The BYX82TAP is specified as an avalanche diode technology, while EGP20D and MUR220RLG use standard diode technology. Both technologies achieve the same 200 V reverse voltage rating and 2 A current rating. The technology designation reflects the internal design approach but does not prevent functional substitution when electrical parameters are equivalent.

Q: Why does the EGP20D have a Not For New Designs status?

A: Not For New Designs status indicates that the manufacturer is phasing out this part number. Existing inventory may remain available, but the manufacturer does not recommend this part for new circuit designs. For new designs, the MUR220RLG is the preferred choice due to its Active status.

Q: How do the reverse recovery times of the substitutes compare to the BYX82TAP?

A: The BYX82TAP has a reverse recovery time of 4 µs (4000 ns), classified as Standard Recovery. The MUR220RLG has 35 ns and the EGP20D has 50 ns, both classified as Fast Recovery. Faster recovery times reduce switching losses and improve efficiency in high-frequency applications. In low-frequency applications, this difference is not significant.

Q: Are there temperature range limitations when substituting?

A: The BYX82TAP operates from -55°C to 175°C. The MUR220RLG matches this range (-65°C to 175°C). The EGP20D has a maximum junction temperature of 150°C, which is 25°C lower than the BYX82TAP. If the application requires operation above 150°C, the EGP20D is not suitable.

Q: What is the impact of different forward voltage specifications?

A: The BYX82TAP specifies 1 V forward voltage at 1 A, while both substitutes specify 950 mV at 2 A. The substitutes have slightly lower forward voltage, which reduces power dissipation. This difference is typically negligible in most circuit applications but should be considered in precision analog circuits or high-current applications where voltage drop directly affects performance.

Q: Can package differences affect circuit performance?

A: Package differences (SOD-57 vs. DO-15 vs. DO-41) affect physical dimensions, lead spacing, and PCB footprint requirements. Electrical performance is not affected by package type provided the diode is properly soldered and mounted. However, PCB layout compatibility must be verified before substitution.

Q: What inventory considerations apply to these substitutes?

A: The BYX82TAP has 866 pieces in stock. The MUR220RLG has significantly higher availability at 265,300 pieces. The EGP20D has 25,100 pieces available. For supply chain resilience, the MUR220RLG offers the best long-term availability.

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