FR103GP-AP Equivalent & Substitute Parts

Part Overview

The FR103GP-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Equivalent and substitute parts are necessary for applications requiring continued supply, design flexibility, or performance optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
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

Substitute parts for the FR103GP-AP are grouped into two categories based on electrical parameter alignment:

Parametric Equivalents share all critical electrical specifications with the main part: 200 V reverse voltage rating, 1 A average rectified current, 1.3 V forward voltage drop at 1 A, 150 ns reverse recovery time, 5 µA reverse leakage current at 200 V, and fast recovery speed classification. These parts are mechanically and electrically interchangeable in the same circuit application. Parametric equivalents include 1N4942GP-AP, FR103A-G, and FR103G A0G.

Similar Parts meet the core voltage and current requirements (200 V, 1 A) and fast recovery speed classification but exhibit variations in secondary parameters such as forward voltage drop, reverse recovery time, or capacitance. The part EGP10D demonstrates superior reverse recovery time (50 ns versus 150 ns) and lower forward voltage drop (950 mV versus 1.3 V), making it suitable for applications where reduced switching losses are beneficial. The part 1N4935GP-AP exhibits a lower forward voltage drop (1.2 V versus 1.3 V) and slightly longer reverse recovery time (200 ns versus 150 ns).

All substitute parts maintain through-hole mounting in DO-41 or DO-204AL packages, operate across the -55°C to 150°C junction temperature range, and comply with RoHS3 and REACH requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Ir @ Vr [µA]	Product Status	Inventory [Pcs]
FR103GP-AP	Micro Commercial Co	200	1	1.3	150	5 @ 200V	Not For New Designs	767
1N4942GP-AP	Micro Commercial Co	200	1	1.3	150	5 @ 200V	Active	775
1N4935GP-AP	Micro Commercial Co	200	1	1.2	200	5 @ 200V	Active	663
FR103A-G	Comchip Technology	200	1	1.3	150	5 @ 200V	Active	852
FR103G A0G	Taiwan Semiconductor Corporation	200	1	1.3	150	5 @ 200V	Active	2510
EGP10D	Fairchild Semiconductor	200	1	0.95	50	5 @ 200V	Active	1420

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

The parts 1N4942GP-AP, FR103A-G, and FR103G A0G are parametric equivalents to FR103GP-AP and provide direct substitution with identical electrical performance. All three are classified as Active products, ensuring continued availability and supply chain stability. 1N4942GP-AP and FR103A-G are manufactured by Micro Commercial Co and Comchip Technology respectively, both ROHS3 compliant. FR103G A0G, manufactured by Taiwan Semiconductor Corporation, offers the highest current inventory (2510 pcs) and is available in Cut Tape packaging, supporting both manual and automated assembly workflows.

For Performance-Optimized Selection:

The EGP10D, manufactured by Fairchild Semiconductor, is suitable for applications where reduced forward voltage drop and faster reverse recovery are advantageous. With a forward voltage of 950 mV (versus 1.3 V) and reverse recovery time of 50 ns (versus 150 ns), this part reduces power dissipation and switching losses. EGP10D maintains the 200 V / 1 A rating and fast recovery classification, with the widest operating temperature range (-65°C to 150°C). This part is Active and maintains high inventory availability (1420 pcs).

For Lower Forward Voltage Applications:

The 1N4935GP-AP offers a reduced forward voltage drop of 1.2 V at 1 A, reducing conduction losses by approximately 7.7% compared to the FR103GP-AP. This part is Active, ROHS3 compliant, and manufactured by Micro Commercial Co. The trade-off is a slightly longer reverse recovery time (200 ns versus 150 ns), which remains within the fast recovery classification.

All substitute parts comply with RoHS3 and REACH requirements, matching the environmental and regulatory status of the main part.

Frequently Asked Questions (FAQ)

Q: Can 1N4942GP-AP directly replace FR103GP-AP in existing designs?

A: Yes. The 1N4942GP-AP is a parametric equivalent with identical voltage rating (200 V), current rating (1 A), forward voltage drop (1.3 V @ 1 A), reverse recovery time (150 ns), and reverse leakage current (5 µA @ 200 V). Both parts use the same DO-41 through-hole package and operate across -55°C to 150°C. No circuit modifications are required.

Q: What is the difference between FR103G A0G and FR103A-G?

A: Both are parametric equivalents with identical electrical specifications (200 V, 1 A, 1.3 V Vf, 150 ns trr). The primary differences are manufacturer (Taiwan Semiconductor Corporation versus Comchip Technology), packaging format (Cut Tape versus Tape & Box), and inventory availability (2510 pcs versus 852 pcs). Selection depends on assembly process requirements and supply chain preferences.

Q: When should EGP10D be selected instead of FR103GP-AP?

A: EGP10D is selected when reduced power dissipation and faster switching are required. The lower forward voltage drop (950 mV versus 1.3 V) and faster reverse recovery time (50 ns versus 150 ns) result in lower conduction and switching losses. EGP10D is suitable for high-frequency rectification circuits, power supply designs, and applications where thermal management is critical. All core electrical ratings (200 V, 1 A) remain compatible.

Q: Are all substitute parts RoHS3 compliant?

A: All parametric equivalents (1N4942GP-AP, FR103A-G, FR103G A0G) and the similar part EGP10D are RoHS3 compliant. Compliance certifications match the environmental standards of the original FR103GP-AP.

Q: What packaging options are available for these substitute parts?

A: FR103GP-AP is supplied in Tape & Box (TB) packaging. Substitute parts are available in multiple formats: 1N4942GP-AP and FR103A-G in Tape & Box, FR103G A0G in Cut Tape (CT), and EGP10D in Bulk. Cut Tape and Bulk formats support automated pick-and-place assembly, while Tape & Box is suitable for manual assembly and component storage.

Q: Does the operating temperature range differ among substitute parts?

A: Most substitute parts operate across -55°C to 150°C, matching the FR103GP-AP. EGP10D offers an extended lower temperature limit of -65°C, providing a wider operating range for applications requiring operation in extreme cold environments.

Q: Can 1N4935GP-AP be used in all applications where FR103GP-AP is specified?

A: 1N4935GP-AP is suitable for most applications. The 1.2 V forward voltage drop (versus 1.3 V) reduces conduction losses. The slightly longer reverse recovery time (200 ns versus 150 ns) remains within the fast recovery classification and does not impact most general-purpose rectification circuits. Verification is required only in high-frequency switching applications where the 50 ns difference in recovery time is critical to circuit performance.

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