FR103GP-TP Equivalent & Substitute Parts

Part Overview

The FR103GP-TP 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 diode is classified as "Not For New Designs," indicating it has reached end-of-life status. Equivalent and substitute parts are necessary to support existing applications, provide design flexibility, and ensure supply chain continuity for production and maintenance requirements.

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	V
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

Substitution of the FR103GP-TP is determined by the following critical parameters:

Voltage Rating: All substitutes must maintain 200 V DC reverse voltage (Vr) maximum
Current Rating: All substitutes must support 1 A average rectified current (Io)
Forward Voltage: Substitutes with forward voltage (Vf) between 950 mV and 1.3 V @ 1 A are functionally equivalent
Reverse Recovery Time: Substitutes with trr between 50 ns and 200 ns maintain fast recovery characteristics
Reverse Leakage Current: All substitutes maintain 5 µA @ 200 V maximum
Package Compatibility: DO-41 and DO-204AL (equivalent designations) packages are mechanically and electrically interchangeable
Mounting Type: Through-hole mounting is consistent across all substitutes
Temperature Range: Operating junction temperature range of -55°C to 150°C or wider is acceptable

Substitutes are classified into two categories:

Parametric Equivalents: Parts with identical or superior electrical characteristics and active product status (1N4935GP-TP, 1N4942GP-TP, FR103G, FR103G A0G, FR103G R0G, FR103G R1G)

Similar Parts: Parts with comparable electrical characteristics but minor variations in forward voltage, reverse recovery time, or temperature range (1N4935G A0G, EGP10D, RGP10D, UF1D A0G)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Ir @ Vr [µA]	Package	Product Status
FR103GP-TP	Micro Commercial Co	200	1	1.3	150	5	DO-41	Not For New Designs
1N4935GP-TP	Micro Commercial Co	200	1	1.2	200	5	DO-41	Active
1N4942GP-TP	Micro Commercial Co	200	1	1.3	150	5	DO-41	Active
1N4935G A0G	Taiwan Semiconductor Corporation	200	1	1.2	200	5	DO-204AL (DO-41)	Active
EGP10D	Fairchild Semiconductor	200	1	0.95	50	5	DO-204AL (DO-41)	Active
RGP10D	Fairchild Semiconductor	200	1	1.3	150	5	DO-204AL (DO-41)	Active
UF1D A0G	Taiwan Semiconductor Corporation	200	1	1.0	50	5	DO-204AL (DO-41)	Active
FR103G	Taiwan Semiconductor Corporation	200	1	1.3	150	5	DO-204AL (DO-41)	Active
FR103G A0G	Taiwan Semiconductor Corporation	200	1	1.3	150	5	DO-204AL (DO-41)	Active
FR103G R0G	Taiwan Semiconductor Corporation	200	1	1.3	150	5	DO-204AL (DO-41)	Discontinued at DiGi Electronics
FR103G R1G	Taiwan Semiconductor Corporation	200	1	1.3	150	5	DO-204AL (DO-41)	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

1N4942GP-TP and 1N4935GP-TP are the preferred substitutes for FR103GP-TP. Both are manufactured by Micro Commercial Co with Active product status, ensuring long-term availability and supply chain stability. 1N4942GP-TP provides identical electrical characteristics (Vf = 1.3 V, trr = 150 ns) to the original part. 1N4935GP-TP offers a lower forward voltage (1.2 V) with slightly extended reverse recovery time (200 ns), both within acceptable operating margins.

Secondary Substitutes (Equivalent Performance)

FR103G, FR103G A0G, and FR103G R1G are parametric equivalents manufactured by Taiwan Semiconductor Corporation with Active product status. These parts maintain identical voltage, current, and recovery time specifications. FR103G A0G is available in Cut Tape (CT) packaging, providing flexibility for different assembly requirements.

Alternative Substitutes (Acceptable Performance Variations)

EGP10D and UF1D A0G offer superior reverse recovery time performance (50 ns) with lower forward voltage characteristics (950 mV and 1.0 V respectively), resulting in reduced power dissipation. RGP10D provides identical electrical characteristics with extended operating temperature range (-65°C to 175°C) and highest inventory availability (17,100 pcs).

Compliance and Regulatory Status

All recommended substitutes maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification, consistent with the original FR103GP-TP. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no special moisture handling requirements.

Packaging Considerations

FR103GP-TP is supplied in Tape & Reel (TR) packaging. Substitutes are available in Tape & Reel (TR), Cut Tape (CT), and Bulk packaging options. DO-41 and DO-204AL package designations are mechanically equivalent for through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can 1N4935GP-TP directly replace FR103GP-TP?

A: Yes. 1N4935GP-TP meets all electrical requirements with 200 V reverse voltage, 1 A current rating, and fast recovery characteristics. The forward voltage is 1.2 V (compared to 1.3 V), and reverse recovery time is 200 ns (compared to 150 ns), both within acceptable operating parameters. Active product status ensures continued availability.

Q: What is the difference between DO-41 and DO-204AL packages?

A: DO-41 and DO-204AL are equivalent package designations for the same axial through-hole diode form factor. Both provide identical mechanical and electrical compatibility for PCB mounting and circuit operation.

Q: Why do some substitutes have lower forward voltage?

A: Forward voltage variation (950 mV to 1.3 V @ 1 A) reflects different semiconductor manufacturing processes and materials. Lower forward voltage reduces power dissipation and heat generation during operation, which is beneficial in most applications. All values within this range are functionally acceptable for 200 V, 1 A rectifier applications.

Q: Is FR103G R0G still available for new orders?

A: FR103G R0G is listed as "Discontinued at DiGi Electronics," indicating limited availability through standard distribution channels. FR103G, FR103G A0G, and FR103G R1G are Active alternatives from the same manufacturer with identical electrical specifications.

Q: What is reverse recovery time and why does it vary?

A: Reverse recovery time (trr) is the interval required for a diode to stop conducting after the applied voltage reverses polarity. Variations from 50 ns to 200 ns reflect different semiconductor designs. Faster recovery (50 ns) reduces switching losses in high-frequency applications, while standard recovery (150 ns) is adequate for general-purpose rectification.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance, confirming the absence of restricted substances (lead, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and bis(2-ethylhexyl) phthalate).

Q: Can I use EGP10D as a substitute if my application requires lower power dissipation?

A: Yes. EGP10D offers 950 mV forward voltage (compared to 1.3 V) and 50 ns reverse recovery time, resulting in lower power dissipation and heat generation. These superior characteristics are fully compatible with FR103GP-TP circuit requirements while providing performance benefits.

Q: What inventory levels are available for each substitute?

A: Inventory availability varies: RGP10D (17,100 pcs), FR103G R0G (11,005 pcs), FR103G A0G (2,510 pcs), 1N4942GP-TP (973 pcs), 1N4935GP-TP (650 pcs), FR103G (1,061 pcs), UF1D A0G (897 pcs), 1N4935G A0G (1,016 pcs), EGP10D (1,420 pcs), and FR103G R1G (1,040 pcs). Consult current supplier inventory for real-time availability.

Q: Do all substitutes support the same operating temperature range?

A: Most substitutes operate from -55°C to 150°C, matching the original FR103GP-TP. RGP10D extends to -65°C to 175°C, providing wider temperature margin. EGP10D operates from -65°C to 150°C. All ranges are suitable for standard industrial and consumer applications.

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