FR104GP-AP Equivalent & Substitute Parts

Part Overview

The FR104GP-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This component is classified as Active and complies with RoHS3 and REACH standards. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility within the general-purpose rectifier diode category.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	400 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 @ 400 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the FR104GP-AP are identified based on the following critical parameters that determine functional equivalence:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial
Compliance: RoHS3 Compliant, REACH Unaffected

All substitute parts listed match these core electrical and mechanical specifications. Variations in secondary parameters such as reverse recovery time (trr), capacitance, and operating temperature range do not preclude substitution when primary ratings are identical.

Parameter Comparison

Parameter	FR104GP-AP (Micro Commercial Co)	BA157-E3/54 (Vishay)	FR104G A0G (Taiwan Semiconductor)	UF4005-G (Comchip Technology)
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Capacitance @ Vr, F	15 pF @ 4V, 1MHz	12 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 125°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BA157-E3/54 (Vishay General Semiconductor - Diodes Division)

This part is a direct parametric equivalent with Active product status and full RoHS3 compliance. The operating temperature range is -65°C to 125°C, which is narrower than the FR104GP-AP but covers standard industrial applications. Capacitance is 12 pF, slightly lower than the main part. This substitute is suitable for applications where the lower temperature ceiling is acceptable.

FR104G A0G (Taiwan Semiconductor Corporation)

This part is a parametric equivalent with Active product status and identical operating temperature range (-55°C to 150°C) as the FR104GP-AP. RoHS3 compliance and REACH status match the main part. Capacitance is 10 pF, the lowest among all listed substitutes. This substitute provides the closest thermal performance match.

UF4005-G (Comchip Technology)

This part meets all primary electrical specifications and mechanical compatibility requirements. However, the product status is listed as Obsolete. RoHS3 compliance and REACH status are maintained. Reverse recovery time is 50 ns, significantly faster than the main part and other substitutes. Capacitance is 20 pF, the highest among listed options. This substitute is not recommended for new designs due to obsolete status.

Frequently Asked Questions (FAQ)

Q: Can BA157-E3/54 replace FR104GP-AP in all applications?

A: BA157-E3/54 matches all primary electrical specifications (400 V, 1 A, 1.3 V forward voltage) and mechanical compatibility (DO-41 through-hole package). The operating temperature range is -65°C to 125°C compared to -55°C to 150°C for the FR104GP-AP. Substitution is valid for applications operating within the BA157-E3/54 temperature limits.

Q: What is the difference between FR104G A0G and FR104GP-AP?

A: Both parts share identical voltage ratings (400 V), current ratings (1 A), forward voltage (1.3 V @ 1 A), and operating temperature range (-55°C to 150°C). The primary difference is manufacturer: FR104GP-AP is from Micro Commercial Co, while FR104G A0G is from Taiwan Semiconductor Corporation. Capacitance differs slightly (15 pF vs. 10 pF). Both are Active products with RoHS3 compliance.

Q: Why is UF4005-G listed as a substitute if it is Obsolete?

A: UF4005-G meets all primary electrical and mechanical specifications required for functional equivalence. However, Obsolete status indicates the part is no longer in active production. For new designs and long-term supply chain planning, FR104G A0G or BA157-E3/54 are preferred alternatives.

Q: Does reverse recovery time affect substitution compatibility?

A: Reverse recovery time (trr) is a secondary parameter. All listed substitutes operate within the Fast Recovery classification (≤ 500 ns, > 200 mA). UF4005-G has a faster trr of 50 ns compared to 150 ns for other parts. This difference does not prevent substitution but may affect switching characteristics in high-frequency applications.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts are available in DO-204AL, DO-41, and Axial configurations. The main part FR104GP-AP and substitutes FR104G A0G and UF4005-G are supplied in DO-41 packages. BA157-E3/54 is supplied in DO-204AL (DO-41) package. Physical dimensions and pin configurations are compatible across all listed parts.

Q: What compliance certifications apply to all substitute parts?

A: All listed parts, including the main part FR104GP-AP, are RoHS3 Compliant and REACH Unaffected. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts. ECCN classification is EAR99 and HTSUS code is 8541.10.0080 for all parts.

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