RL252-TP Equivalent & Substitute Parts

Part Overview

The RL252-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 100V DC reverse voltage and 2.5A average rectified current in an R-3 axial through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The RL252-TP operates across a junction temperature range of -55°C to 150°C and complies with ROHS3 standards.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	2.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 2.5 A
Speed	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Capacitance @ Vr, F	35pF @ 4V, 1MHz
Mounting Type	Through Hole
Package / Case	R-3, Axial
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RL252-TP is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a minimum DC reverse voltage rating of 100V to ensure equivalent electrical performance in the circuit.

Current Rating: The average rectified current must be at or above 2.5A. Substitute parts rated for 3A provide increased current capacity while maintaining backward compatibility.

Forward Voltage: Forward voltage characteristics must be compatible with circuit design requirements. The RL252-TP specifies 1V @ 2.5A; substitute parts with forward voltages between 875mV and 1.5V @ comparable currents are functionally equivalent.

Recovery Speed: The RL252-TP operates with standard recovery characteristics (>500ns). Substitute parts with either standard or fast recovery (≤500ns) are acceptable, as faster recovery provides improved performance.

Reverse Leakage Current: Leakage current specifications of 1µA to 5µA @ 100V are acceptable for general-purpose rectification applications.

Mounting Type: All substitute parts are through-hole axial devices, maintaining mechanical compatibility with the original design.

Package Compatibility: While the RL252-TP uses an R-3 package, substitute parts in DO-201AD and DO-204AP packages are mechanically compatible with standard through-hole PCB layouts.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Reverse Leakage @ Vr	Package / Case	Product Status	RoHS Status
RL252-TP	Micro Commercial Co	100 V	2.5 A	1 V @ 2.5 A	Standard Recovery >500ns	5 µA @ 100 V	R-3, Axial	Obsolete	ROHS3 Compliant
1N5804	Solid State Inc.	100 V	2.5 A	875 mV @ 1 A	Fast Recovery ≤500ns	1 µA @ 100 V	DO-204AP, Axial	Active	ROHS3 Compliant
1N5186	Microchip Technology	100 V	3 A	1.5 V @ 9 A	Fast Recovery ≤500ns	2 µA @ 100 V	B, Axial	Active	RoHS non-compliant
1N5401-E3/54	Vishay General Semiconductor - Diodes Division	100 V	3 A	1.2 V @ 3 A	Standard Recovery >500ns	5 µA @ 100 V	DO-201AD, Axial	Active	ROHS3 Compliant
1N5401G-T	Diodes Incorporated	100 V	3 A	1.1 V @ 3 A	Standard Recovery >500ns	5 µA @ 100 V	DO-201AD, Axial	Active	ROHS3 Compliant
1N5416	Microchip Technology	100 V	3 A	1.5 V @ 9 A	Fast Recovery ≤500ns	1 µA @ 100 V	B, Axial	Active	RoHS non-compliant
EGP30B	Fairchild Semiconductor	100 V	3 A	950 mV @ 3 A	Fast Recovery ≤500ns	5 µA @ 100 V	DO-201AD, Axial	Active	Not specified
GI501-E3/54	Vishay General Semiconductor - Diodes Division	100 V	3 A	1.1 V @ 9.4 A	Standard Recovery >500ns	5 µA @ 100 V	DO-201AD, Axial	Active	ROHS3 Compliant
GI501-E3/73	Vishay General Semiconductor - Diodes Division	100 V	3 A	1.1 V @ 9.4 A	Standard Recovery >500ns	5 µA @ 100 V	DO-201AD, Axial	Active	ROHS3 Compliant
RGP30B-E3/54	Vishay General Semiconductor - Diodes Division	100 V	3 A	1.3 V @ 3 A	Fast Recovery ≤500ns	5 µA @ 100 V	DO-201AD, Axial	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Current-Matched Substitute: The 1N5804 from Solid State Inc. provides the closest electrical match to the RL252-TP, maintaining the 2.5A current rating while offering improved fast recovery characteristics and lower reverse leakage current (1µA). This part is ROHS3 compliant and carries active product status. The DO-204AP package is mechanically compatible with standard through-hole PCB designs.

Higher Current Capacity Substitutes: Parts rated for 3A current (1N5401-E3/54, 1N5401G-T, GI501-E3/54, GI501-E3/73, EGP30B, and RGP30B-E3/54) provide increased design margin and are suitable for applications where the RL252-TP was operating near its current limits. These parts maintain the 100V voltage rating and are available in DO-201AD packages.

ROHS3 Compliance Priority: For applications requiring ROHS3 compliance, select from: 1N5804, 1N5401-E3/54, 1N5401G-T, GI501-E3/54, GI501-E3/73, or RGP30B-E3/54. These parts meet current environmental standards.

Active Product Status: All recommended substitutes carry active product status, ensuring long-term availability and supply chain stability compared to the obsolete RL252-TP.

Recovery Speed Considerations: Applications sensitive to switching transients benefit from fast recovery diodes (1N5804, 1N5186, 1N5416, EGP30B, RGP30B-E3/54). Standard recovery parts (1N5401-E3/54, 1N5401G-T, GI501-E3/54, GI501-E3/73) maintain compatibility with designs originally specified for the RL252-TP.

Frequently Asked Questions (FAQ)

Q: Can I use a 3A-rated diode as a direct replacement for the 2.5A RL252-TP?

A: Yes. A 3A-rated diode provides increased current capacity while maintaining the same 100V voltage rating. This substitution is electrically valid and provides design margin. The diode will operate safely at or below the original 2.5A design current.

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

A: Recovery speed refers to the time required for the diode to transition from conducting to blocking state. Standard recovery (>500ns) is suitable for general-purpose rectification. Fast recovery (≤500ns) reduces switching transients and is preferred in high-frequency applications. Both types are acceptable substitutes for the RL252-TP in standard rectification circuits.

Q: Are DO-201AD and DO-204AP packages mechanically interchangeable with the R-3 package?

A: Yes. All three packages are axial through-hole devices with compatible lead spacing for standard PCB layouts. Physical dimensions vary slightly, but they mount identically in through-hole applications.

Q: Why is RoHS compliance important for selecting a substitute?

A: ROHS3 compliance indicates the part meets current environmental and regulatory standards for hazardous substance restrictions. For new designs or applications subject to environmental regulations, ROHS3-compliant parts (1N5804, 1N5401-E3/54, 1N5401G-T, GI501-E3/54, GI501-E3/73, RGP30B-E3/54) are required.

Q: What does "reverse leakage current" mean, and why does it vary among substitutes?

A: Reverse leakage current is the small current that flows through the diode when it is reverse-biased (blocking). Values range from 1µA to 5µA @ 100V among the listed substitutes. Lower leakage current indicates better blocking performance. For general-purpose rectification, all specified values are acceptable.

Q: Which substitute offers the best overall compatibility with the RL252-TP?

A: The 1N5804 provides the closest match, maintaining the 2.5A current rating while offering active product status and ROHS3 compliance. For applications requiring higher current capacity, the 1N5401-E3/54 and 1N5401G-T from active manufacturers provide excellent compatibility with standard recovery characteristics matching the original design.

Q: Can I use these substitutes in high-temperature applications?

A: The RL252-TP operates to 150°C junction temperature. Most substitutes (1N5186, 1N5416, 1N5804, EGP30B, RGP30B-E3/54) extend to 175°C, providing improved thermal margin. The 1N5401-E3/54 and GI501 series are rated to 150°C, matching the original specification.

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