FR151-AP Equivalent & Substitute Parts

Part Overview

The FR151-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 1.5 A average rectified current in a DO-15 through-hole package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical and mechanical compatibility across all critical parameters including voltage rating, current capacity, forward voltage characteristics, and package configuration.

Substiute Parts

FR151-AP

Micro Commercial CoIn Stock: 770FR151-AP Datasheet

Current PartRFQ

FR151GP-AP

Micro Commercial CoIn Stock: 992FR151GP-AP Datasheet

DirectRFQ

FR151G A0G

Taiwan Semiconductor CorporationIn Stock: 822FR151G A0G Datasheet

Parametric EquivalentRFQ

FR151GHA0G

Taiwan Semiconductor CorporationIn Stock: 954FR151GHA0G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FR151-AP is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitutes:

Electrical Equivalence Requirements:

• Voltage - DC Reverse (Vr) (Max): 50 V
• Current - Average Rectified (Io): 1.5 A
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1.5 A
• Reverse Recovery Time (trr): 150 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 50 V
• Capacitance @ Vr, F: 20 pF @ 4V, 1MHz
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Equivalence Requirements:

• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial
• Operating Temperature - Junction: -55°C to 150°C

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these criteria. The primary distinction between substitutes is product status (active versus obsolete) and optional automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: FR151GP-AP (Micro Commercial Co)

The FR151GP-AP is the direct manufacturer equivalent to the FR151-AP. This part maintains identical electrical and mechanical specifications while offering active product status. Selection of FR151GP-AP is appropriate for applications requiring continuity with the original FR151-AP design without additional qualification requirements.

Secondary Substitutes: FR151G A0G and FR151GHA0G (Taiwan Semiconductor Corporation)

Both Taiwan Semiconductor Corporation parts are parametric equivalents meeting all electrical and mechanical requirements. These parts are manufactured by an alternative supplier and are actively produced.

The FR151GHA0G includes automotive-grade qualification (AEC-Q101) and is designated for automotive applications. Selection of FR151GHA0G is appropriate for designs requiring automotive-grade components or when automotive qualification is mandated by application requirements.

The FR151G A0G is suitable for general industrial and commercial applications where automotive qualification is not required.

All three substitute parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), matching the compliance profile of the original FR151-AP.

Frequently Asked Questions (FAQ)

Q: Can FR151GP-AP be used as a direct replacement for FR151-AP?

A: Yes. The FR151GP-AP is electrically and mechanically identical to the FR151-AP across all specified parameters. The primary difference is product status: FR151GP-AP is active while FR151-AP is obsolete. No design modifications are required for substitution.

Q: What is the difference between FR151G A0G and FR151GHA0G?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The FR151GHA0G includes automotive-grade qualification (AEC-Q101) and automotive designation. Selection depends on application requirements. If automotive qualification is not required, either part is suitable.

Q: Are all substitute parts compatible with the original FR151-AP package footprint?

A: Yes. All substitute parts use DO-204AC, DO-15, or Axial package designations, which are mechanically equivalent. Through-hole mounting configuration is identical across all parts. No PCB layout modifications are required.

Q: Do the substitute parts meet RoHS compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant, matching the compliance status of the original FR151-AP. All parts carry MSL 1 (Unlimited) moisture sensitivity level.

Q: Which substitute part should be selected for new designs?

A: For new designs without automotive requirements, FR151GP-AP (Micro Commercial Co) or FR151G A0G (Taiwan Semiconductor) are appropriate selections. Both are active products with full availability. For automotive applications, FR151GHA0G (Taiwan Semiconductor) with AEC-Q101 qualification is the appropriate selection.

Q: Are there any electrical performance differences between the substitute parts?

A: No. All substitute parts maintain identical electrical specifications: 50 V reverse voltage, 1.5 A average rectified current, 1.3 V forward voltage at 1.5 A, 150 ns reverse recovery time, and 5 µA reverse leakage current at 50 V. Electrical performance is equivalent across all parts.

Q: What is the inventory status of substitute parts?

A: FR151GP-AP: 889 pieces in stock. FR151G A0G: 760 pieces in stock. FR151GHA0G: 903 pieces in stock. All substitute parts are available as new original stock.