R1200-AP Equivalent & Substitute Parts

Part Overview

The R1200-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 1200 V DC reverse voltage and 500 mA average rectified current in a through-hole DO-41 package. This component is classified as obsolete, necessitating identification of active equivalent parts 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)	1200	V
Current - Average Rectified (Io)	500	mA
Voltage - Forward (Vf) (Max) @ If	2 V @ 500 mA	V
Current - Reverse Leakage @ Vr	5	µA @ 1200 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 R1200-AP is determined by equivalence in the following critical electrical and mechanical parameters:

Voltage Rating: Reverse voltage must equal or exceed 1200 V DC
Current Rating: Average rectified current must equal or exceed 500 mA
Forward Voltage: Must not exceed specified maximum at rated current
Reverse Leakage: Must not exceed specified maximum at rated voltage
Package Compatibility: Must use through-hole axial configuration (DO-41 or DO-204AL equivalent)
Temperature Range: Operating junction temperature range must accommodate application requirements
Compliance: RoHS3 compliance required for regulatory alignment

The RGP02-12E-E3/54 manufactured by Vishay General Semiconductor - Diodes Division meets all substitution criteria. This part is classified as active, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Parameter	R1200-AP (Micro Commercial Co)	RGP02-12E-E3/54 (Vishay)	Match Status
Voltage - DC Reverse (Vr) (Max)	1200 V	1200 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	Substitute Superior
Current - Reverse Leakage @ Vr	5 µA @ 1200 V	5 µA @ 1200 V	Equivalent
Speed	Standard Recovery >500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Substitute Superior
Reverse Recovery Time (trr)	Not specified	300 ns	Substitute 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 to 150°C	-65 to 175°C	Substitute Superior
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The RGP02-12E-E3/54 is a direct functional equivalent to the obsolete R1200-AP. Both parts satisfy identical electrical specifications for reverse voltage, average rectified current, and reverse leakage current. Both are packaged in through-hole DO-41 axial configuration and maintain ROHS3 compliance.

The RGP02-12E-E3/54 offers measurable advantages in forward voltage performance and recovery speed characteristics. The substitute part operates across an extended temperature range (-65°C to 175°C versus -55°C to 150°C), providing additional thermal margin for demanding applications. The active product status of the RGP02-12E-E3/54 ensures sustained availability and supply chain reliability, addressing the obsolescence of the original R1200-AP.

Pin-to-pin and functional compatibility is confirmed. Direct substitution in existing designs is supported without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the RGP02-12E-E3/54 replace the R1200-AP in existing designs?

A: Yes. Both parts share identical voltage ratings (1200 V), current ratings (500 mA), reverse leakage specifications (5 µA @ 1200 V), and through-hole axial package configuration. Functional substitution is direct without circuit redesign.

Q: What are the key differences between these parts?

A: The RGP02-12E-E3/54 exhibits superior forward voltage performance (1.8 V @ 100 mA versus 2 V @ 500 mA), 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). The substitute part includes specified reverse recovery time (300 ns), which is not provided for the original part.

Q: Are both parts RoHS compliant?

A: Yes. Both the R1200-AP and RGP02-12E-E3/54 are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the package compatibility?

A: Both parts use identical through-hole axial packaging (DO-41 / DO-204AL). Physical dimensions and lead configuration are compatible with existing PCB layouts and component placement equipment.

Q: Why is the R1200-AP classified as obsolete?

A: The R1200-AP is no longer in active production. The RGP02-12E-E3/54 is the active equivalent, ensuring continued availability and supply chain support for this functional category.

Q: Does the faster recovery speed of the RGP02-12E-E3/54 affect circuit operation?

A: Fast recovery characteristics (≤ 500 ns) are compatible with applications designed for standard recovery diodes (> 500 ns). The faster recovery time does not introduce incompatibility and may reduce switching losses in high-frequency applications.

Q: Are there any thermal considerations when substituting?

A: The RGP02-12E-E3/54 operates across a wider temperature range (-65°C to 175°C) compared to the R1200-AP (-55°C to 150°C). This extended range provides additional design margin and is fully compatible with applications within the original part's temperature specifications.

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