FR306-AP Equivalent & Substitute Parts

Part Overview

The FR306-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial 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 performance across voltage, current, and thermal specifications while ensuring mechanical compatibility with existing PCB layouts.

Substiute Parts

FR306-AP

Micro Commercial CoIn Stock: 1079FR306-AP Datasheet

Current PartRFQ

FR306GP-AP

Micro Commercial CoIn Stock: 1199FR306GP-AP Datasheet

DirectRFQ

FR306G A0G

Taiwan Semiconductor CorporationIn Stock: 1006FR306G A0G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FR306-AP is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 800 V
• Current - Average Rectified (Io): 3 A
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 3 A
• Reverse Recovery Time (trr): 500 ns
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Package / Case: DO-201AD, Axial
• Mounting Type: Through Hole
• Operating Temperature - Junction: -55°C to 150°C

Acceptable Variation Parameters:

• Current - Reverse Leakage @ Vr: Equal or lower values are acceptable
• Capacitance @ Vr, F: Lower values are acceptable

Substitute parts must satisfy all critical matching parameters. Variations in reverse leakage current and capacitance do not affect functional substitution when lower or equal values are maintained.

Parameter Comparison

Engineering Selection Recommendations

FR306GP-AP (Direct Manufacturer Substitute)

The FR306GP-AP is the primary substitute for the FR306-AP. Both components are manufactured by Micro Commercial Co and share identical electrical specifications across all critical parameters. The FR306GP-AP is currently in active production status, ensuring long-term availability and supply chain stability. This part exhibits improved reverse leakage characteristics (5 µA versus 10 µA) and reduced capacitance (50 pF versus 65 pF), both of which represent performance enhancements without compromising functional compatibility. ROHS3 compliance and MSL rating are identical. Direct pin-for-pin and footprint compatibility is confirmed through matching DO-201AD axial package specifications.

FR306G A0G (Parametric Equivalent)

The FR306G A0G, manufactured by Taiwan Semiconductor Corporation, provides a parametric equivalent alternative when FR306GP-AP availability is constrained. This component maintains all critical electrical specifications including voltage, current, recovery time, and temperature range. The FR306G A0G demonstrates further optimization in reverse leakage (5 µA) and capacitance (30 pF), indicating advanced manufacturing processes. Active product status and ROHS3 compliance support long-term design viability. Mechanical compatibility is assured through identical DO-201AD axial through-hole packaging. Selection of this substitute is appropriate when supply chain diversification or alternative sourcing is required.

Product Status Consideration

The obsolete status of FR306-AP necessitates transition to either FR306GP-AP or FR306G A0G for all new designs and production continuity. Both substitutes are actively manufactured and supported, eliminating obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Can FR306GP-AP be used as a direct replacement for FR306-AP in existing designs?

A: Yes. The FR306GP-AP is a direct substitute with identical electrical specifications across all critical parameters: 800 V reverse voltage, 3 A average rectified current, 1.3 V forward voltage at 3 A, and 500 ns reverse recovery time. Package and mounting type are identical (DO-201AD, axial, through-hole). No circuit modifications are required.

Q: What is the difference between FR306GP-AP and FR306G A0G?

A: Both parts meet all critical electrical specifications for substitution. The primary differences are manufacturer (Micro Commercial Co versus Taiwan Semiconductor Corporation) and secondary parameters: reverse leakage current (5 µA for both, improved from the original 10 µA) and capacitance (50 pF versus 30 pF). These variations do not affect functional performance in standard rectifier applications.

Q: Are there any thermal or temperature-related differences between these substitutes?

A: No. All three parts share identical operating temperature ranges: -55°C to 150°C junction temperature. Thermal performance is equivalent across the FR306-AP, FR306GP-AP, and FR306G A0G.

Q: Is the DO-201AD package compatible with existing PCB layouts designed for FR306-AP?

A: Yes. All substitute parts use the DO-201AD axial through-hole package, ensuring mechanical and electrical compatibility with existing PCB designs. No layout modifications are necessary.

Q: What is the significance of the improved reverse leakage current in the substitutes?

A: The FR306GP-AP and FR306G A0G exhibit reverse leakage current of 5 µA at 800 V, compared to 10 µA for the FR306-AP. Lower reverse leakage represents improved device characteristics and reduced power dissipation in reverse-biased conditions. This enhancement does not create compatibility issues; it represents a performance improvement.

Q: Are both substitutes RoHS compliant?

A: Yes. Both FR306GP-AP and FR306G A0G are ROHS3 compliant, matching the compliance status of the original FR306-AP. Both parts carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints.

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

A: FR306GP-AP is recommended as the primary choice for new designs due to direct manufacturer continuity with the original part. FR306G A0G serves as a secondary option when supply chain diversification or alternative sourcing is strategically beneficial. Both parts are functionally equivalent and support long-term production viability.