BYT54D-TAP Equivalent & Substitute Parts

Part Overview

The BYT54D-TAP is an avalanche diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200V DC reverse voltage and 1.25A average rectified current in a SOD-57 axial through-hole package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or application-specific packaging preferences.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1.25	A
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 1 A	V
Reverse Recovery Time (trr)	100	ns
Current - Reverse Leakage @ Vr	5	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 of the BYT54D-TAP is determined by the following critical electrical and mechanical parameters:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 200V or greater to ensure equivalent reverse bias protection.

Current Rating: Substitute parts must support a minimum average rectified current of 1.25A. Parts rated at 1A represent a current derating and are acceptable only when circuit design permits reduced current capacity.

Recovery Characteristics: The BYT54D-TAP employs avalanche technology with fast recovery (≤500ns). Substitute parts with standard recovery characteristics (>500ns) represent a functional trade-off in switching speed but remain electrically compatible at the specified voltage and current ratings.

Package Compatibility: Through-hole axial packages (SOD-57, A-Axial, DO-41) are mechanically interchangeable on printed circuit boards with identical lead spacing and mounting orientation.

Temperature Range: Operating junction temperature range must support the application's thermal environment. The BYT54D-TAP range of -55°C to 175°C establishes the baseline requirement.

Compliance: RoHS and REACH certifications determine suitability for regulated applications and supply chain requirements.

Parameter Comparison

Parameter	BYT54D-TAP (Main)	1N3611 (Substitute)	EGP10D (Substitute)
Manufacturer	Vishay General Semiconductor	Microchip Technology	Fairchild Semiconductor
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	1.25 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 1 A	1.1 V @ 1 A	950 mV @ 1 A
Speed Classification	Fast Recovery ≤500ns	Standard Recovery >500ns	Fast Recovery ≤500ns
Reverse Recovery Time (trr)	100 ns	—	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	1 µA @ 200 V	5 µA @ 200 V
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	SOD-57, Axial	A, Axial	DO-204AL (DO-41), Axial
Operating Temperature - Junction	-55°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 150°C
Technology	Avalanche	Standard	Standard
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	—

Engineering Selection Recommendations

BYT54D-TAP (Primary Selection)

The BYT54D-TAP is the specified component and remains the preferred selection. It is Active product status, RoHS3 compliant, and provides avalanche technology with fast recovery characteristics. The 1.25A current rating and -55°C to 175°C junction temperature range establish the baseline performance envelope.

1N3611 (Substitute - Current Derating)

The 1N3611 is electrically compatible at 200V reverse voltage but is rated for 1A average rectified current, representing a 20% current reduction from the BYT54D-TAP specification. This substitute employs standard recovery technology (>500ns) rather than fast recovery. The 1N3611 is RoHS non-compliant, which restricts its use in regulated applications requiring RoHS certification. This part is suitable only when circuit design accommodates the reduced current capacity and RoHS compliance is not required.

EGP10D (Substitute - Equivalent Performance)

The EGP10D is electrically compatible at 200V reverse voltage and 1A average rectified current. It provides fast recovery characteristics (50ns reverse recovery time) and lower forward voltage drop (950mV @ 1A) compared to the BYT54D-TAP. The operating temperature range extends to -65°C but is limited to 150°C maximum junction temperature, which is 25°C below the BYT54D-TAP specification. The EGP10D is suitable when the reduced maximum junction temperature does not conflict with application thermal requirements and the 1A current rating is acceptable.

Compliance Considerations

Applications requiring RoHS3 compliance must use the BYT54D-TAP. The 1N3611 is RoHS non-compliant and unsuitable for regulated markets. RoHS compliance status for the EGP10D is not specified in the provided data.

Frequently Asked Questions (FAQ)

Q: Can the 1N3611 be used as a direct replacement for the BYT54D-TAP?

A: The 1N3611 is electrically compatible at the 200V voltage rating but operates at 1A average rectified current versus the BYT54D-TAP's 1.25A rating. This represents a 20% current derating. Substitution is valid only when circuit design permits reduced current capacity. Additionally, the 1N3611 is RoHS non-compliant, which excludes it from applications requiring RoHS3 certification.

Q: What is the difference between avalanche and standard recovery technology?

A: The BYT54D-TAP employs avalanche technology with fast recovery (≤500ns). The 1N3611 uses standard recovery technology (>500ns). Avalanche diodes provide enhanced reverse voltage protection through controlled breakdown characteristics. Standard recovery diodes have slower switching response. Both technologies are functionally compatible at the specified voltage and current ratings; the selection depends on application switching speed requirements.

Q: Are the package types interchangeable?

A: The BYT54D-TAP (SOD-57), 1N3611 (A-Axial), and EGP10D (DO-41) are all through-hole axial packages with identical lead spacing and mounting orientation. They are mechanically interchangeable on printed circuit boards designed for standard axial component placement.

Q: Does the EGP10D's lower forward voltage drop affect circuit operation?

A: The EGP10D forward voltage drop is 950mV @ 1A compared to the BYT54D-TAP's 1.5V @ 1A. This 550mV reduction results in lower power dissipation and heat generation. In most applications, this represents an improvement. However, circuits designed with specific forward voltage assumptions should be evaluated to confirm compatibility.

Q: What is the impact of the EGP10D's 150°C maximum junction temperature limit?

A: The EGP10D maximum junction temperature is 150°C, which is 25°C below the BYT54D-TAP specification of 175°C. Applications operating near the upper thermal limit of the BYT54D-TAP may exceed the EGP10D's maximum rating. Thermal analysis is required to confirm suitability in high-temperature environments.

Q: Why is the 1N3611 RoHS non-compliant?

A: RoHS compliance status is determined by manufacturing process and material composition. The 1N3611 does not meet RoHS3 requirements. Applications subject to RoHS regulations must use the BYT54D-TAP or verify RoHS compliance of alternative parts.

Q: Can I use the EGP10D in a circuit designed for the BYT54D-TAP?

A: The EGP10D is electrically compatible at 200V reverse voltage and provides equivalent fast recovery characteristics. However, the 1A current rating represents a 20% derating, and the 150°C maximum junction temperature is 25°C lower. Substitution is valid when circuit design accommodates these parameter differences and thermal analysis confirms the reduced temperature limit is acceptable.

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