FR206 Equivalent & Substitute Parts

Part Overview

The FR206 is a general-purpose rectifier diode rated for 800 V DC reverse voltage and 2 A average rectified current, housed in a DO-15 (DO-204AC) axial through-hole package. This diode is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The FR206 features fast recovery characteristics with a reverse recovery time of 500 ns, suitable for standard rectification applications requiring moderate voltage and current ratings.

Substiute Parts

FR206

SMC Diode SolutionsIn Stock: 30222FR206 Datasheet

Current PartRFQ

FR206G

Taiwan Semiconductor CorporationIn Stock: 877FR206G Datasheet

DirectRFQ

1N5621GP-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 7741N5621GP-E3/73 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FR206 is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): 800 V minimum
• Current - Average Rectified (Io): 2 A minimum
• Package / Case: DO-204AC, DO-15, Axial (through-hole)
• Mounting Type: Through Hole

Secondary Compatibility Factors:

• Reverse Recovery Time (trr): ≤ 500 ns (fast recovery classification)
• Current - Reverse Leakage @ Vr: ≤ 5 µA @ 800 V
• Operating Temperature Range: Must encompass application requirements

The FR206G qualifies as a direct equivalent, meeting all primary criteria with identical voltage and current ratings and matching package specifications. The 1N5621GP-E3/73 is classified as a similar substitute due to reduced current rating (1 A versus 2 A), making it suitable only for applications requiring ≤ 1 A average rectified current.

Parameter Comparison

Engineering Selection Recommendations

FR206G (Direct Equivalent): FR206G is the primary substitute for FR206 applications. Both parts share identical voltage (800 V) and current (2 A) ratings with matching DO-15 axial through-hole packaging. FR206G is currently in active production status with ROHS3 compliance and REACH unaffected certification, providing regulatory continuity for new designs and production runs. The forward voltage specification increases marginally from 1.2 V to 1.3 V at rated current, which remains within acceptable tolerance for standard rectification circuits. FR206G maintains the fast recovery characteristic (500 ns) required for switching applications.

1N5621GP-E3/73 (Similar Substitute): The 1N5621GP-E3/73 is suitable only for applications where the average rectified current requirement does not exceed 1 A. This part offers superior reverse recovery time (300 ns versus 500 ns) and significantly lower reverse leakage current (500 nA versus 5 µA), making it advantageous for low-leakage or high-frequency switching applications operating at reduced current levels. The extended operating temperature range (-65°C ~ 175°C) and ROHS3 compliance support demanding environmental specifications. This part is not interchangeable with FR206 in circuits requiring the full 2 A current rating.

Frequently Asked Questions (FAQ)

Q: Can FR206G be used as a direct replacement for FR206 in all applications?

A: FR206G qualifies as a direct equivalent for applications designed for the FR206 specifications. Both parts are rated for 800 V reverse voltage and 2 A average rectified current with identical DO-15 axial through-hole packaging. The marginal increase in forward voltage (1.3 V versus 1.2 V at 2 A) is within normal design tolerance for rectification circuits. Verify that the application circuit does not depend on the specific thermal characteristics of the original FR206, as FR206G operates over a wider temperature range (-55°C ~ 150°C versus -65°C ~ 125°C).

Q: Is 1N5621GP-E3/73 compatible with FR206 designs?

A: 1N5621GP-E3/73 is not a direct replacement due to its reduced current rating of 1 A versus the FR206's 2 A specification. This part is compatible only with circuit designs where the average rectified current does not exceed 1 A. The superior reverse recovery time (300 ns) and lower reverse leakage current (500 nA) make it suitable for low-leakage or high-frequency switching applications operating within its current limit.

Q: What is the significance of the DO-15 package designation?

A: DO-15 (also designated DO-204AC) is an axial through-hole package with leads extending from opposite ends of the diode body. This package is mechanically and electrically compatible across all three parts listed. The axial configuration allows insertion into through-hole PCB designs with standard lead spacing. All substitute parts maintain this package specification, ensuring mechanical compatibility in existing PCB layouts.

Q: Why is FR206 classified as obsolete?

A: FR206 is no longer in active production. FR206G, manufactured by Taiwan Semiconductor Corporation, is the active equivalent part that maintains full electrical and mechanical compatibility while providing current production availability and modern compliance certifications (ROHS3).

Q: What compliance certifications should be verified for new designs?

A: FR206G and 1N5621GP-E3/73 both carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic components in most jurisdictions. The original FR206 does not specify RoHS status. Verify compliance requirements with your specific application standards and regional regulations before final component selection.

Q: How do reverse recovery time differences affect circuit performance?

A: Reverse recovery time (trr) determines how quickly the diode transitions from conducting to blocking state. FR206 and FR206G both specify 500 ns, suitable for standard rectification and moderate-frequency switching applications. The 1N5621GP-E3/73 offers faster recovery at 300 ns, reducing switching losses in high-frequency circuits. Select based on the operating frequency and switching characteristics required by your application.