R1800-TP Equivalent & Substitute Parts

Part Overview

The R1800-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 1800 V DC reverse voltage with 500 mA average rectified current in a through-hole DO-41 package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across a junction temperature range of -55°C to 150°C and complies with ROHS3 standards.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1800	V
Current - Average Rectified (Io)	500	mA
Voltage - Forward (Vf) (Max) @ If	2	V @ 500 mA
Current - Reverse Leakage @ Vr	5	µA @ 1800 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the R1800-TP is determined by matching the following critical electrical and mechanical parameters:

Voltage Rating: DC reverse voltage must equal or exceed 1800 V
Current Rating: Average rectified current must equal or exceed 500 mA
Forward Voltage: Forward voltage drop at rated current must not exceed specified limits for the application
Reverse Leakage: Reverse leakage current at rated voltage must not exceed 5 µA
Package Compatibility: Through-hole mounting in DO-41 or DO-204AL package
Temperature Range: Operating junction temperature range must encompass the application requirements
Compliance: ROHS3 compliance required for regulatory alignment

The RGP02-18E-E3/54 manufactured by Vishay General Semiconductor meets all substitution criteria with identical voltage and current ratings, compatible package designation, and enhanced performance characteristics in recovery speed and temperature range.

Parameter Comparison

Parameter	R1800-TP (Micro Commercial Co)	RGP02-18E-E3/54 (Vishay)	Match Status
Voltage - DC Reverse (Vr) (Max)	1800 V	1800 V	Equivalent
Current - Average Rectified (Io)	500 mA	500 mA	Equivalent
Voltage - Forward (Vf) (Max) @ If	2 V @ 500 mA	1.8 V @ 100 mA	Compatible
Current - Reverse Leakage @ Vr	5 µA @ 1800 V	5 µA @ 1800 V	Equivalent
Speed	Standard Recovery >500 ns	Fast Recovery ≤ 500 ns	Enhanced
Reverse Recovery Time (trr)	Not specified	300 ns	Specified
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	Equivalent
Operating Temperature - Junction	-55°C to 150°C	-65°C to 175°C	Enhanced Range
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Active Alternative

Engineering Selection Recommendations

The RGP02-18E-E3/54 is a direct functional substitute for the R1800-TP. Both components meet identical voltage and current specifications, share compatible through-hole package designations, and maintain ROHS3 compliance. The Vishay component offers enhanced performance through faster recovery characteristics (≤ 500 ns versus > 500 ns) and an extended operating temperature range (-65°C to 175°C versus -55°C to 150°C), providing additional design margin without compromising compatibility.

The active product status of the RGP02-18E-E3/54 ensures long-term availability and supply chain continuity, addressing the obsolescence of the original R1800-TP. Forward voltage characteristics remain within acceptable operating parameters for standard rectification applications.

Frequently Asked Questions (FAQ)

Q: Can the RGP02-18E-E3/54 be used as a direct replacement for the R1800-TP in existing designs?

A: Yes. Both components share identical voltage ratings (1800 V), current ratings (500 mA), reverse leakage specifications (5 µA @ 1800 V), and through-hole package compatibility (DO-41/DO-204AL). Physical footprint and pin configuration are identical.

Q: What is the difference in recovery speed between these diodes?

A: The R1800-TP operates with standard recovery characteristics (>500 ns), while the RGP02-18E-E3/54 provides fast recovery (≤ 500 ns) with a specified reverse recovery time of 300 ns. This enhancement reduces switching losses in high-frequency applications without affecting DC rectification performance.

Q: Does the extended temperature range of the RGP02-18E-E3/54 affect compatibility?

A: No. The extended range (-65°C to 175°C versus -55°C to 150°C) provides additional operational margin and does not introduce incompatibility. Applications operating within the original R1800-TP temperature range remain fully compatible.

Q: Are there packaging differences between these components?

A: Both components use identical through-hole axial package designations (DO-41/DO-204AL). No PCB layout modifications are required for substitution.

Q: What is the significance of the RGP02-18E-E3/54 being an active product?

A: Active product status ensures ongoing manufacturing, documented supply availability, and technical support. This addresses the obsolescence of the R1800-TP and provides design continuity for new and existing applications.

Q: How do forward voltage characteristics compare?

A: The R1800-TP specifies 2 V maximum at 500 mA, while the RGP02-18E-E3/54 specifies 1.8 V maximum at 100 mA. The Vishay component exhibits lower forward voltage drop, resulting in reduced power dissipation during rectification.

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