FR155-AP Equivalent & Substitute Parts

Part Overview

The FR155-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 1.5 A average rectified current in a DO-15 through-hole package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within the same application category.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A
Reverse Recovery Time (trr)	250 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V
Capacitance @ Vr, F	20 pF @ 4V, 1MHz
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Standard
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)

Substitute Part Grouping Explanation

Substitution of the FR155-AP is determined by strict equivalence across all critical electrical parameters: reverse voltage rating (600 V), average rectified current (1.5 A), forward voltage drop (1.3 V @ 1.5 A), reverse recovery time (250 ns), reverse leakage current (5 µA @ 600 V), and junction capacitance (20 pF @ 4V, 1MHz). All substitute parts must maintain through-hole mounting in DO-15 or DO-204AC package configurations and operate across the temperature range of -55°C to 150°C. The substitute parts are grouped into two categories: direct manufacturer equivalents from Micro Commercial Co and parametric equivalents from Taiwan Semiconductor Corporation. All listed substitutes meet these electrical and mechanical requirements without deviation.

Parameter Comparison

Parameter	FR155-AP (Main)	FR155GP-AP	FR155G A0G	FR155GHA0G
Manufacturer	Micro Commercial Co	Micro Commercial Co	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	1.5 A	1.5 A	1.5 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A	1.3 V @ 1.5 A	1.3 V @ 1.5 A	1.3 V @ 1.5 A
Reverse Recovery Time (trr)	250 ns	250 ns	250 ns	250 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V
Capacitance @ Vr, F	20 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Grade	Standard	Standard	Standard	Automotive
Qualification	Not specified	Not specified	Not specified	AEC-Q101

Engineering Selection Recommendations

FR155GP-AP is the primary direct equivalent from Micro Commercial Co. This part maintains active product status and identical electrical specifications to the FR155-AP. Selection of FR155GP-AP is appropriate for applications requiring continuity with the original manufacturer's product line and where standard-grade components are acceptable.

FR155G A0G and FR155GHA0G are parametric equivalents from Taiwan Semiconductor Corporation. Both parts maintain active product status and meet all electrical and mechanical requirements of the FR155-AP. FR155G A0G is a standard-grade alternative suitable for general-purpose applications. FR155GHA0G carries automotive-grade qualification (AEC-Q101), making it appropriate for applications requiring automotive-level reliability and traceability.

All substitute parts are ROHS3 compliant, carry MSL rating of 1 (Unlimited), and operate across the full temperature range of -55°C to 150°C. Selection between standard and automotive-grade alternatives depends on application requirements and end-use classification.

Frequently Asked Questions (FAQ)

Q: Can FR155GP-AP be used as a direct replacement for FR155-AP?

A: Yes. FR155GP-AP is manufactured by the same supplier (Micro Commercial Co) and maintains identical electrical parameters, forward voltage characteristics, reverse recovery time, reverse leakage current, and junction capacitance. Both parts use the same DO-15 through-hole package configuration. The primary difference is product status: FR155-AP is obsolete while FR155GP-AP is active.

Q: What is the difference between FR155G A0G and FR155GHA0G?

A: Both parts are manufactured by Taiwan Semiconductor Corporation and maintain identical electrical specifications. The key distinction is that FR155GHA0G carries automotive-grade qualification (AEC-Q101), while FR155G A0G is standard-grade. Selection depends on whether the application requires automotive-level qualification and traceability.

Q: Are the DO-15 and DO-204AC packages interchangeable?

A: Yes. DO-15 and DO-204AC are equivalent package designations for the same axial through-hole diode package. All listed substitute parts support both designations and are mechanically and electrically compatible in applications designed for either package type.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant and carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. FR155GHA0G additionally carries AEC-Q101 automotive qualification. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Q: Can these diodes be used in high-temperature applications?

A: Yes. All substitute parts maintain operating junction temperature range of -55°C to 150°C, supporting both low-temperature and high-temperature environments within this specification window.

Q: Are there inventory considerations when selecting a substitute?

A: Inventory levels vary among substitute parts. FR155GP-AP has 959 pieces in stock, FR155G A0G has 1094 pieces, and FR155GHA0G has 721 pieces. The original FR155-AP has 677 pieces available as obsolete stock. Inventory availability should be evaluated based on production volume and lead-time requirements.

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