BY253P-E3/73 Equivalent & Substitute Parts

Part Overview

The BY253P-E3/73 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This through-hole component operates at 600 V DC reverse voltage with a 3 A average rectified current rating. The device is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements call for enhanced performance characteristics such as faster recovery times or higher current ratings within the same voltage class.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	3	µs
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Mounting Type	Through Hole	-
Package / Case	DO-201AD, Axial	-
Operating Temperature - Junction	-55°C ~ 150°C	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the BY253P-E3/73 is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain 600 V DC reverse voltage maximum to ensure circuit protection and reliability.

Current Rating: The primary specification is 3 A average rectified current. Substitutes rated at 3 A or higher are electrically compatible. Parts rated at 6 A or 4 A provide additional current margin and are functionally interchangeable in applications requiring 3 A or less.

Recovery Speed: The BY253P-E3/73 operates as a standard recovery diode (>500 ns). Substitutes with faster recovery times (≤500 ns) are backward compatible and provide improved switching performance.

Package Compatibility: The DO-201AD axial package is the primary form factor. Equivalent packages include DO-27 and DO-201AA, which are mechanically and electrically compatible through-hole configurations.

Compliance & Status: All substitutes must maintain ROHS3 compliance and REACH unaffected status. Product status (Active or Not For New Designs) indicates availability and long-term support considerations.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf @ If	Recovery Speed	trr (ns)	Package	Status
BY253P-E3/73	Vishay	600 V	3	1.1 V @ 3 A	Standard >500ns	3000	DO-201AD	Active
1N5406-G	Comchip Technology	600 V	3	1 V @ 3 A	Standard >500ns	-	DO-201AD	Active
1N5406G	Taiwan Semiconductor	600 V	3	1 V @ 3 A	Standard >500ns	-	DO-201AD	Active
1N5406RLG	onsemi	600 V	3	1 V @ 3 A	Standard >500ns	-	DO-201AA/DO-27	Not For New Designs
60S6-TP	Micro Commercial Co	600 V	6	1 V @ 6 A	Standard >500ns	-	DO-201AD	Active
EGP30J	onsemi	600 V	3	1.7 V @ 3 A	Fast ≤500ns	75	DO-201AD	Not For New Designs
FR305GP-TP	Micro Commercial Co	600 V	3	1.3 V @ 3 A	Fast ≤500ns	250	DO-201AD	Active
MR856G	onsemi	600 V	3	1.25 V @ 3 A	Fast ≤500ns	300	DO-201AA/DO-27	Active
MUR460G	onsemi	600 V	4	1.28 V @ 4 A	Fast ≤500ns	75	DO-201AA/DO-27	Active
MUR460RLG	onsemi	600 V	4	1.28 V @ 4 A	Fast ≤500ns	75	DO-201AA/DO-27	Active
STTH3L06	STMicroelectronics	600 V	3	1.3 V @ 3 A	Fast ≤500ns	85	DO-201AD	Active

Engineering Selection Recommendations

Direct Equivalents (Same Specifications): The 1N5406-G (Comchip Technology) and 1N5406G (Taiwan Semiconductor) provide direct electrical equivalence to the BY253P-E3/73 with identical voltage and current ratings. Both maintain Active product status and ROHS3 compliance. The 1N5406G offers higher inventory availability (2400 pcs) compared to the primary part (791 pcs).

Standard Recovery Alternatives: The 1N5406RLG (onsemi) maintains standard recovery speed characteristics identical to the BY253P-E3/73. This part carries "Not For New Designs" status, indicating it remains available for existing applications but is not recommended for new circuit development.

Higher Current Rating: The 60S6-TP (Micro Commercial Co) operates at 6 A average rectified current while maintaining 600 V reverse voltage. This part is suitable for applications where the 3 A rating of the BY253P-E3/73 requires margin or where circuit redesign permits higher current capacity. Active product status supports long-term availability.

Fast Recovery Alternatives: Parts including FR305GP-TP, MR856G, MUR460G, MUR460RLG, and STTH3L06 feature fast recovery times (≤500 ns) compared to the standard recovery specification of the BY253P-E3/73. These components are backward compatible and provide improved switching performance in high-frequency applications. MUR460RLG and MUR460G offer 4 A ratings with 75 ns recovery time and Active status, supporting new designs.

Compliance Verification: All listed substitutes maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the primary part. Moisture sensitivity level (MSL 1) is consistent across all Active status parts, ensuring equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a 4 A rated diode as a substitute for the 3 A BY253P-E3/73?

A: Yes. The MUR460G and MUR460RLG are rated at 4 A average rectified current and maintain the same 600 V reverse voltage. Higher current ratings are electrically compatible in applications requiring 3 A or less, as the diode will operate within its specified limits.

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

A: The BY253P-E3/73 has a reverse recovery time (trr) of 3 µs (standard recovery >500 ns). Fast recovery substitutes such as STTH3L06 (85 ns) and MUR460RLG (75 ns) switch off more quickly, reducing switching losses in high-frequency circuits. Both types are electrically compatible at the same voltage and current ratings.

Q: Are DO-27 and DO-201AD packages interchangeable?

A: Yes. DO-27 and DO-201AD are equivalent axial through-hole packages. Parts such as 1N5406-G (DO-27) and 1N5406G (DO-201AD) are mechanically and electrically identical, differing only in packaging designation. Verify PCB pad spacing and lead length requirements for your specific application.

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

A: Parts marked "Not For New Designs" (such as 1N5406RLG and EGP30J) remain available for existing applications and repairs but are not recommended for new circuit development. Manufacturers typically apply this status when newer alternatives with improved performance or longer lifecycle support are available. For new designs, select parts with Active status.

Q: What is the significance of forward voltage (Vf) differences among substitutes?

A: Forward voltage varies between 1.0 V and 1.7 V across the substitute list. The BY253P-E3/73 specifies 1.1 V @ 3 A. Substitutes with lower Vf (such as 1N5406-G at 1.0 V) produce less heat dissipation. Substitutes with higher Vf (such as EGP30J at 1.7 V) may require thermal management review in power-sensitive applications. Verify that your circuit design accommodates the forward voltage of the selected substitute.

Q: Is the 60S6-TP suitable for my application if I only need 3 A?

A: Yes. The 60S6-TP is rated at 6 A average rectified current and will operate reliably at 3 A. This part provides current margin and is suitable for applications where future design modifications may increase current demand or where component standardization across multiple designs is preferred.

Q: Do all substitutes have the same temperature range?

A: No. The BY253P-E3/73 operates from -55°C to 150°C. Substitutes vary: 1N5406-G operates -65°C to 125°C, MUR460RLG operates -65°C to 175°C, and STTH3L06 has a maximum junction temperature of 175°C. Verify that the selected substitute meets your application's temperature requirements.

Q: What inventory considerations should I evaluate?

A: The STTH3L06 offers the highest inventory (37,300 pcs), followed by MUR460RLG (280,456 pcs). The primary BY253P-E3/73 has 791 pcs available. Higher inventory levels typically indicate better long-term availability and shorter lead times. Consider inventory depth when selecting substitutes for production applications.

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