FR603-AP Equivalent & Substitute Parts

Part Overview

The FR603-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 6 A average rectified current. The device features fast recovery characteristics with a reverse recovery time of 150 ns and is housed in an R-6 axial through-hole package. The FR603-AP is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 6 A
Reverse Recovery Time (trr)	150 ns
Current - Reverse Leakage @ Vr	10 µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	R-6, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the FR603-AP is determined by electrical and mechanical parameter equivalence. The critical parameters for substitution are:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 6 A
Reverse Recovery Time (trr): 150 ns
Package / Case: R-6, Axial
Mounting Type: Through Hole
Operating Temperature Range: -55°C ~ 150°C
RoHS Compliance: ROHS3 Compliant

Substitute parts must maintain identical or superior electrical ratings and mechanical compatibility. Parts are classified as direct manufacturer equivalents or parametric equivalents based on manufacturer identity and product status.

Parameter Comparison

Parameter	FR603-AP (Micro Commercial Co)	FR603GP-AP (Micro Commercial Co)	FR603B-G (Comchip Technology)
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	6 A	6 A	6 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 6 A	1.3 V @ 6 A	1.3 V @ 6 A
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns
Current - Reverse Leakage @ Vr	10 µA @ 200 V	10 µA @ 200 V	10 µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	R-6, Axial	R-6, Axial	R-6, Axial
Mounting Type	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active
Capacitance @ Vr, F	150pF @ 4V, 1MHz	150pF @ 4V, 1MHz	100pF @ 4V, 1MHz

Engineering Selection Recommendations

FR603GP-AP (Micro Commercial Co) is the primary direct manufacturer equivalent. This part maintains identical electrical specifications and mechanical compatibility with the FR603-AP while offering active product status and full ROHS3 compliance. The FR603GP-AP is the preferred selection for direct replacement in existing designs.

FR603B-G (Comchip Technology) is a parametric equivalent manufactured by an alternative supplier. This part meets all critical electrical and mechanical requirements with identical voltage, current, and recovery time specifications. The FR603B-G differs in capacitance specification (100pF versus 150pF at 4V, 1MHz) and packaging format (Tape & Box versus standard packaging). The FR603B-G is suitable for applications where capacitance variance within this range does not impact circuit performance and where alternative supplier qualification is acceptable.

Both substitute parts are ROHS3 compliant and operate within the identical temperature range, ensuring regulatory and thermal compatibility with the original FR603-AP design.

Frequently Asked Questions (FAQ)

Q: Can FR603GP-AP be used as a direct replacement for FR603-AP?

A: Yes. The FR603GP-AP is a direct manufacturer equivalent with identical electrical ratings (200 V, 6 A, 150 ns recovery time) and mechanical compatibility (R-6 axial through-hole package). The primary distinction is product status: FR603GP-AP is active while FR603-AP is obsolete.

Q: What is the difference between FR603GP-AP and FR603B-G?

A: Both parts meet the core electrical specifications (200 V, 6 A, 150 ns recovery time) and use identical R-6 axial through-hole packaging. The FR603B-G, manufactured by Comchip Technology, has a lower capacitance specification (100pF versus 150pF at 4V, 1MHz). Selection between these parts depends on circuit-specific capacitance requirements and supplier qualification status.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both FR603GP-AP and FR603B-G are ROHS3 compliant, matching the compliance status of the original FR603-AP.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes, for mechanical and thermal aspects. All three parts use R-6 axial through-hole packaging and operate across the identical temperature range (-55°C to 150°C). Electrical interchangeability is confirmed for the primary ratings. The capacitance difference in FR603B-G (100pF versus 150pF) must be evaluated for specific circuit applications.

Q: What inventory status should influence part selection?

A: FR603GP-AP has 1092 pieces in stock and FR603B-G has 747 pieces in stock, both offering immediate availability. The FR603-AP, though obsolete, has 779 pieces available but should not be selected for new designs due to discontinued status.

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