1F4-AP General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The 1F4-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 an R-1 axial through-hole package. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The 1F4-AP operates across a junction temperature range of -55°C to 150°C and complies with ROHS3 standards.

Substiute Parts

1F4-AP

Micro Commercial CoIn Stock: 12391F4-AP Datasheet

Current PartRFQ

1F4G-AP

Micro Commercial CoIn Stock: 12291F4G-AP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1F4-AP is determined by electrical and mechanical parameter equivalence across the following critical specifications:

Electrical Parameters:

• 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
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Capacitance @ Vr, F: 12 pF @ 4V, 1MHz

Mechanical Parameters:

• Mounting Type: Through Hole
• Package / Case: R-1, Axial

Compliance Parameters:

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

Substitute parts must match all electrical specifications, maintain identical mechanical packaging, and satisfy the same compliance requirements. Product status (active versus obsolete) is noted for procurement planning but does not disqualify electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 1F4G-AP is a direct electrical and mechanical equivalent to the 1F4-AP. All specified electrical parameters, including reverse voltage rating, forward current capacity, forward voltage drop, reverse recovery time, and reverse leakage current, are identical. The mechanical package (R-1 axial through-hole) and compliance certifications (ROHS3, MSL 1) are equivalent.

The primary distinction is product status: the 1F4-AP is classified as obsolete, while the 1F4G-AP is active. For new designs and ongoing procurement, the 1F4G-AP is the appropriate selection. For legacy systems currently using the 1F4-AP, the 1F4G-AP provides direct substitution without circuit redesign or performance modification.

Both parts are manufactured by Micro Commercial Co and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Frequently Asked Questions (FAQ)

Q: Can the 1F4G-AP replace the 1F4-AP in existing circuits?

A: Yes. The 1F4G-AP is electrically and mechanically identical to the 1F4-AP. All electrical parameters, including voltage ratings, current capacity, forward voltage, and recovery time, match exactly. The R-1 axial through-hole package is identical, permitting direct board-level substitution without modification.

Q: Why is the 1F4-AP listed as obsolete?

A: Product status reflects manufacturer lifecycle classification. The 1F4-AP is no longer in active production. The 1F4G-AP serves as the active equivalent and is the recommended part for new procurement and design applications.

Q: Are there any compliance differences between the 1F4-AP and 1F4G-AP?

A: No. Both parts are ROHS3 compliant, carry MSL 1 (unlimited moisture sensitivity), and share identical ECCN and HTSUS classifications. Compliance requirements are fully satisfied by either part.

Q: What is the significance of the "G" designation in the 1F4G-AP part number?

A: The "G" suffix indicates a revision or variant within the 1F4 base product family. The 1F4G-AP maintains all electrical and mechanical specifications of the 1F4-AP while reflecting the active production variant.

Q: Can I use the 1F4G-AP in high-temperature applications?

A: The 1F4G-AP operates across a junction temperature range of -55°C to 150°C, identical to the 1F4-AP. Applications within this temperature range are supported without derating.

Q: Is the reverse recovery time critical for my application?

A: The reverse recovery time (trr) of 150 ns is specified for both parts. This parameter is relevant in switching applications where fast diode turn-off is required. Both the 1F4-AP and 1F4G-AP are classified as fast recovery diodes (≤ 500 ns) and are suitable for applications requiring this performance level.