FR103-AP Equivalent & Substitute Parts

Part Overview

The FR103-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 DO-41 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The FR103-AP features fast recovery characteristics with a reverse recovery time of 150 ns and operates across a junction temperature range of -55°C to 150°C. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) support broad application deployment.

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
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 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

Substitute parts for the FR103-AP are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents share identical or functionally equivalent electrical specifications across all critical parameters: 200 V reverse voltage rating, 1 A average rectified current, fast recovery speed classification (≤ 500ns), 150 ns reverse recovery time, 5 µA reverse leakage current at rated voltage, through-hole mounting, and DO-41 package compatibility. These parts are direct functional replacements with active product status.

Similar Parts maintain the core electrical specifications (200 V, 1 A, through-hole DO-41 package) but differ in one or more secondary parameters such as forward voltage drop, reverse recovery time, capacitance characteristics, or speed classification. These parts are suitable for applications where the specific parameter variance does not impact circuit performance.

The substitution logic is based strictly on:

Voltage rating compatibility (200 V minimum)
Current rating compatibility (1 A minimum)
Package and mounting type (DO-41 through-hole)
Speed classification (fast or standard recovery)
Reverse recovery time performance
Reverse leakage current specifications
Operating temperature range coverage

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Speed	Package	Temp Range [°C]	RoHS
FR103-AP	Micro Commercial Co	Obsolete	200	1	1.3 @ 1 A	150	Fast Recovery ≤ 500ns	DO-41	-55 to 150	ROHS3
1N4935GP-AP	Micro Commercial Co	Active	200	1	1.2 @ 1 A	200	Fast Recovery ≤ 500ns	DO-41	-55 to 150	ROHS3
1N4942GP-AP	Micro Commercial Co	Active	200	1	1.3 @ 1 A	150	Fast Recovery ≤ 500ns	DO-41	-55 to 150	ROHS3
EGP10D	Fairchild Semiconductor	Active	200	1	0.95 @ 1 A	50	Fast Recovery ≤ 500ns	DO-41	-65 to 150	-
GP10D-4003HE3/54	Vishay General Semiconductor	Active	200	1	-	-	Standard Recovery >500ns	DO-41	-	ROHS3
FR103A-G	Comchip Technology	Active	200	1	1.3 @ 1 A	150	Fast Recovery ≤ 500ns	DO-41	-55 to 150	ROHS3
FR103G A0G	Taiwan Semiconductor Corporation	Active	200	1	1.3 @ 1 A	150	Fast Recovery ≤ 500ns	DO-41	-55 to 150	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents)

The 1N4942GP-AP, FR103A-G, and FR103G A0G are direct parametric equivalents to the FR103-AP. These parts maintain identical electrical specifications including 200 V reverse voltage, 1 A current rating, 1.3 V forward voltage drop at 1 A, 150 ns reverse recovery time, and fast recovery speed classification. All three are active products with ROHS3 compliance. The 1N4942GP-AP is manufactured by Micro Commercial Co (same manufacturer as the obsolete FR103-AP) and provides continuity within the same product family. The FR103A-G (Comchip Technology) and FR103G A0G (Taiwan Semiconductor Corporation) offer equivalent performance with active product status and full compliance certifications.

Secondary Substitutes (Similar Parts)

The 1N4935GP-AP differs from the FR103-AP in forward voltage drop (1.2 V versus 1.3 V) and reverse recovery time (200 ns versus 150 ns), while maintaining all other critical parameters. This part is suitable for applications where the slightly higher reverse recovery time does not impact circuit timing requirements.

The EGP10D (Fairchild Semiconductor) provides superior performance characteristics with a lower forward voltage drop (0.95 V) and faster reverse recovery time (50 ns). It extends the operating temperature range to -65°C and maintains fast recovery speed classification. This part is applicable where improved efficiency or extended temperature operation is required.

The GP10D-4003HE3/54 (Vishay General Semiconductor) maintains the 200 V and 1 A ratings but operates with standard recovery speed (>500ns) rather than fast recovery. This part is suitable only for applications where fast recovery characteristics are not required.

Compliance and Availability

All active substitute parts carry ROHS3 compliance or equivalent environmental certifications. Inventory availability ranges from 663 to 2510 pieces across the substitute options, supporting immediate procurement needs.

Frequently Asked Questions (FAQ)

Q: Can the 1N4935GP-AP replace the FR103-AP directly?

A: The 1N4935GP-AP is functionally compatible with the FR103-AP for most applications. Both parts share identical voltage and current ratings, package type, and operating temperature range. The 1N4935GP-AP has a slightly lower forward voltage drop (1.2 V versus 1.3 V) and longer reverse recovery time (200 ns versus 150 ns). These differences are acceptable in applications where the circuit does not depend on the specific 150 ns recovery time specification.

Q: What is the difference between the 1N4942GP-AP and FR103G A0G?

A: Both parts are parametric equivalents with identical electrical specifications. The 1N4942GP-AP is manufactured by Micro Commercial Co and supplied in standard packaging. The FR103G A0G is manufactured by Taiwan Semiconductor Corporation and supplied in cut tape format. Selection between these parts depends on packaging requirements and supplier availability. Both are active products with ROHS3 compliance.

Q: Is the EGP10D a suitable replacement for the FR103-AP?

A: The EGP10D is electrically compatible with the FR103-AP, maintaining the 200 V reverse voltage and 1 A current ratings in the same DO-41 package. The EGP10D offers improved performance with lower forward voltage drop (0.95 V versus 1.3 V) and faster reverse recovery time (50 ns versus 150 ns). The EGP10D extends the operating temperature range to -65°C. This part is suitable for direct replacement and provides performance benefits in efficiency-sensitive applications.

Q: Why is the GP10D-4003HE3/54 listed as a similar part rather than a direct equivalent?

A: The GP10D-4003HE3/54 differs from the FR103-AP in speed classification. The FR103-AP operates with fast recovery speed (≤ 500ns), while the GP10D-4003HE3/54 operates with standard recovery speed (>500ns). In applications where fast recovery characteristics are critical to circuit performance, the GP10D-4003HE3/54 is not suitable. In applications where recovery speed is not a limiting factor, this part provides a compatible alternative.

Q: Are all substitute parts available in the same DO-41 package?

A: All substitute parts listed are available in DO-41 through-hole packages or equivalent DO-204AL designations. The package and mounting type are consistent across all options, supporting direct board-level replacement without layout modifications.

Q: What compliance certifications apply to the substitute parts?

A: The parametric equivalents (1N4942GP-AP, FR103A-G, FR103G A0G) carry ROHS3 compliance. The 1N4935GP-AP carries ROHS3 compliance with REACH unaffected status. The EGP10D does not list specific RoHS certification in the provided data. The GP10D-4003HE3/54 carries ROHS3 compliance with REACH unaffected status. Verify compliance requirements for your specific application before final part selection.

Q: Can the FR103-AP be used interchangeably with the FR103A-G?

A: The FR103A-G is a parametric equivalent to the FR103-AP with identical electrical specifications and operating temperature range. Both parts are rated for 200 V reverse voltage, 1 A current, 1.3 V forward voltage drop at 1 A, and 150 ns reverse recovery time. The primary difference is product status (FR103-AP is obsolete; FR103A-G is active) and packaging format (FR103A-G is supplied in tape and box format). These parts are interchangeable for circuit design purposes.

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