Equivalent & Substitute Parts for PR6003-T

Part Overview

The PR6003-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 200 V DC reverse voltage and 6 A average rectified current in an R-6 axial through-hole package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and production continuity. Equivalent parts must maintain electrical performance within the specified parameters while offering active product status and sustained supply availability.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	6	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 6 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Mounting Type	Through Hole	—
Package / Case	R-6, Axial	—
Operating Temperature - Junction	-65°C ~ 150°C	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the PR6003-T is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 6 A minimum
Mounting Type: Through Hole
Package / Case: R-6 or equivalent axial configuration

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: Must not exceed application requirements
Reverse Recovery Time (trr): Fast recovery (≤ 500ns) preferred for switching applications
Operating Temperature Range: Must encompass application operating conditions
RoHS Compliance: ROHS3 Compliant status required

Substitute parts are grouped into two categories:

Category A - Direct Electrical & Mechanical Equivalents: Parts meeting or exceeding all primary criteria with R-6 package configuration and fast recovery characteristics (FR603GP-AP, HER603GP-AP, GI752-E3/54).

Category B - Functional Equivalents with Trade-offs: Parts meeting primary voltage and current criteria but with different recovery speed classifications or package variants (6A2-TP, 1N5550).

Parameter Comparison

Parameter	PR6003-T	FR603GP-AP	HER603GP-AP	GI752-E3/54	6A2-TP	1N5550
Manufacturer	Diodes Inc.	Micro Commercial Co	Micro Commercial Co	Vishay	Micro Commercial Co	Solid State Inc.
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	6 A	6 A	6 A	6 A	6 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 6 A	1.3 V @ 6 A	1.1 V @ 6 A	900 mV @ 6 A	950 mV @ 6 A	1 V @ 3 A
Speed Classification	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns
Reverse Recovery Time (trr)	150 ns	150 ns	50 ns	2.5 µs	2 µs	2 µs
Current - Reverse Leakage @ Vr	10 µA @ 200 V	10 µA @ 200 V	10 µA @ 200 V	5 µA @ 200 V	10 µA @ 200 V	1 µA @ 200 V
Capacitance @ Vr, F	140pF @ 4V	150pF @ 4V	100pF @ 4V	150pF @ 4V	150pF @ 4V	150pF @ 12V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	R-6, Axial	R-6, Axial	R-6, Axial	P600, Axial	R-6, Axial	Axial
Operating Temperature - Junction	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-50°C ~ 150°C	-55°C ~ 125°C	-65°C ~ 200°C
Product Status	Obsolete	Active	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Preferred Direct Equivalents (Active Status):

FR603GP-AP and HER603GP-AP are the primary recommended substitutes for the PR6003-T. Both parts are manufactured by Micro Commercial Co, maintain active product status, and provide identical electrical specifications within the critical parameters: 200 V reverse voltage, 6 A average rectified current, R-6 axial package, and fast recovery characteristics. FR603GP-AP exhibits forward voltage of 1.3 V at 6 A, while HER603GP-AP provides superior performance with 1.1 V forward voltage and 50 ns reverse recovery time. Both parts are ROHS3 compliant and support the full operating temperature range of the original component.

Tier 2 - Functional Equivalents with Considerations:

GI752-E3/54 (Vishay) maintains 200 V / 6 A electrical ratings and ROHS3 compliance but uses a P600 axial package variant rather than R-6. This part exhibits lower forward voltage (900 mV @ 6 A) and reduced reverse leakage (5 µA @ 200 V) but operates at standard recovery speed (2.5 µs) rather than fast recovery. Physical package differences require mechanical verification for board-level compatibility.

6A2-TP (Micro Commercial Co) provides identical 200 V / 6 A ratings in R-6 package but carries "Not For New Designs" status and operates within a reduced temperature range (-55°C ~ 125°C). This part is suitable for legacy system maintenance only.

Tier 3 - Limited Compatibility:

1N5550 (Solid State Inc.) is rated for only 3 A average rectified current, which is insufficient for applications requiring the full 6 A capacity of the PR6003-T. This part is not suitable as a direct substitute for 6 A applications.

Frequently Asked Questions (FAQ)

Q: Can FR603GP-AP directly replace PR6003-T in existing designs?

A: Yes. FR603GP-AP meets all critical electrical parameters (200 V reverse voltage, 6 A average rectified current) and maintains identical R-6 axial through-hole package configuration. Both parts are ROHS3 compliant and support the same operating temperature range. No circuit modifications are required.

Q: What is the difference between fast recovery and standard recovery diodes in this comparison?

A: The PR6003-T and its preferred substitutes (FR603GP-AP, HER603GP-AP) feature fast recovery characteristics with reverse recovery times of 50-150 ns. Standard recovery alternatives (GI752-E3/54, 6A2-TP, 1N5550) exhibit reverse recovery times of 2-2.5 µs. Fast recovery diodes are preferred in switching power supplies and high-frequency applications where reduced switching losses are critical. Standard recovery diodes are suitable for line-frequency rectification and lower-speed applications.

Q: Why is 1N5550 listed as a substitute if it only provides 3 A current rating?

A: 1N5550 is included in the comparison for reference purposes only. It is not a suitable substitute for applications requiring the full 6 A capacity of the PR6003-T. This part is appropriate only for circuits designed for 3 A or lower current levels.

Q: What is the significance of the P600 package used by GI752-E3/54 compared to the R-6 package?

A: Both P600 and R-6 are axial through-hole package configurations suitable for PCB mounting. Physical dimensions differ between these packages. GI752-E3/54 with P600 package requires verification of mechanical fit within existing board layouts designed for R-6 components. Electrical performance is equivalent; mechanical compatibility must be confirmed before implementation.

Q: Is HER603GP-AP superior to FR603GP-AP for all applications?

A: HER603GP-AP exhibits superior reverse recovery time (50 ns versus 150 ns) and lower forward voltage (1.1 V versus 1.3 V at 6 A), resulting in reduced switching losses and heat generation. However, both parts meet the electrical requirements of the PR6003-T. Selection between these two active alternatives depends on specific application requirements for switching speed and thermal performance. For general-purpose rectification, either part is acceptable.

Q: Can 6A2-TP be used in new product designs?

A: No. 6A2-TP carries "Not For New Designs" product status, indicating that the manufacturer does not recommend this part for new applications. This part is restricted to legacy system maintenance and repair of existing equipment. New designs must utilize active-status alternatives such as FR603GP-AP or HER603GP-AP.

Q: What compliance certifications are common across all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance and are classified under HTSUS code 8541.10.0080. All parts carry EAR99 ECCN classification. Moisture sensitivity level is uniformly rated as 1 (Unlimited) across all R-6 package variants, indicating no special moisture protection requirements during storage or handling.

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