FR605-AP Equivalent & Substitute Parts

Part Overview

The FR605-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 6 A average rectified current in an R-6 axial through-hole package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design and procurement requirements. Equivalent parts maintain identical or superior electrical characteristics within the specified parameter range, while substitute parts provide functional alternatives with acceptable performance variations for the intended application.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	6	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 6 A
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	10	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	R-6, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55 to 150	°C

Substitute Part Grouping Explanation

Substitution of the FR605-AP is determined by equivalence in the following critical parameters: maximum reverse voltage (600 V), average rectified current (6 A), package type (R-6 axial through-hole), and operating temperature range (-55°C to 150°C). Parts are classified into two categories:

Direct Equivalent (Identical Electrical Performance): Parts maintaining all primary electrical specifications including forward voltage (1.3 V @ 6 A), reverse recovery time (250 ns), and reverse leakage current (10 µA @ 600 V).

Parametric Equivalent (Acceptable Performance Variation): Parts meeting voltage and current ratings with allowable variations in secondary parameters such as forward voltage, reverse recovery time, or capacitance, provided these variations do not degrade circuit performance.

All substitute parts must maintain R-6 axial through-hole packaging for mechanical compatibility and support the full operating temperature range.

Parameter Comparison

Parameter	FR605-AP (Main)	FR605GP-AP (Direct Equivalent)	HER606G A0G (Similar)	FR605B-G (Parametric Equivalent)
Manufacturer	Micro Commercial Co	Micro Commercial Co	Taiwan Semiconductor Corporation	Comchip Technology
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	6 A	6 A	6 A	6 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 6 A	1.3 V @ 6 A	1.7 V @ 6 A	1.3 V @ 6 A
Reverse Recovery Time (trr)	250 ns	250 ns	75 ns	250 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V
Capacitance @ Vr, F	150 pF @ 4V, 1MHz	150 pF @ 4V, 1MHz	65 pF @ 4V, 1MHz	100 pF @ 4V, 1MHz
Package / Case	R-6, Axial	R-6, Axial	R-6, Axial	R-6, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

FR605GP-AP (Micro Commercial Co): This part is the primary direct equivalent, offering identical electrical specifications to the FR605-AP with active product status. It maintains the same forward voltage (1.3 V @ 6 A), reverse recovery time (250 ns), and capacitance (150 pF @ 4V, 1MHz). Current inventory of 1075 pieces supports immediate procurement. ROHS3 compliance and MSL 1 rating match the original specification. This part is suitable for direct substitution without circuit redesign.

FR605B-G (Comchip Technology): This parametric equivalent maintains identical forward voltage and reverse recovery time specifications while offering reduced capacitance (100 pF @ 4V, 1MHz) compared to the main part. Active product status and ROHS3 compliance are confirmed. Packaging is supplied as Tape & Box (TB) rather than bulk. This part is suitable for applications where lower capacitance provides performance benefits or where packaging format is acceptable.

HER606G A0G (Taiwan Semiconductor Corporation): This similar substitute meets the 600 V and 6 A ratings with acceptable performance variations. Forward voltage is elevated to 1.7 V @ 6 A, and reverse recovery time is significantly reduced to 75 ns with lower capacitance (65 pF @ 4V, 1MHz). These characteristics indicate superior high-frequency performance. Active product status and ROHS3 compliance are confirmed. This part is suitable for applications requiring faster switching or lower capacitive loading, provided the higher forward voltage drop is acceptable in the circuit design.

Frequently Asked Questions (FAQ)

Q: Can FR605GP-AP be used as a direct replacement for FR605-AP?

A: Yes. FR605GP-AP is a direct equivalent with identical electrical specifications: 600 V reverse voltage, 6 A average rectified current, 1.3 V forward voltage @ 6 A, 250 ns reverse recovery time, and 10 µA reverse leakage @ 600 V. Both use R-6 axial through-hole packaging. The primary difference is product status: FR605GP-AP is active while FR605-AP is obsolete.

Q: What are the key differences between FR605B-G and the main part?

A: FR605B-G maintains identical forward voltage (1.3 V @ 6 A) and reverse recovery time (250 ns) but offers reduced capacitance (100 pF versus 150 pF @ 4V, 1MHz). Packaging is supplied as Tape & Box rather than bulk. All voltage, current, and temperature specifications remain identical. This part is suitable for direct substitution in most applications.

Q: When should HER606G A0G be selected over other substitutes?

A: HER606G A0G is selected when circuit design benefits from faster switching performance. Its 75 ns reverse recovery time (versus 250 ns for other parts) and lower capacitance (65 pF) reduce switching losses and improve high-frequency operation. The elevated forward voltage (1.7 V @ 6 A) must be evaluated against circuit power dissipation and voltage regulation requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. FR605GP-AP, HER606G A0G, and FR605B-G are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original FR605-AP specification.

Q: Does package format affect substitution compatibility?

A: All substitute parts use R-6 axial through-hole packaging, ensuring mechanical compatibility with existing PCB layouts. FR605B-G is supplied in Tape & Box format rather than bulk, which may affect handling and assembly processes but does not impact electrical performance or board-level compatibility.

Q: What is the inventory status for each substitute part?

A: FR605GP-AP has 1075 pieces in stock, HER606G A0G has 1125 pieces, and FR605B-G has 801 pieces. All parts are available as new original components.

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