FR205 Equivalent & Substitute Parts

Part Overview

The FR205 is a general-purpose rectifier diode rated for 600 V DC reverse voltage and 2 A average rectified current in a through-hole DO-15 package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The FR205 series provides fast recovery characteristics suitable for standard rectification circuits requiring moderate voltage and current ratings.

Substiute Parts

FR205

SMC Diode SolutionsIn Stock: 95831FR205 Datasheet

Current PartRFQ

FR205G

Taiwan Semiconductor CorporationIn Stock: 7782FR205G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FR205 is determined by electrical and mechanical parameter equivalence within the rectifier diode category. The following parameters establish substitution validity:

Critical Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 2 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Reverse Recovery Time (trr): 250 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 600 V

Critical Mechanical Parameters:

• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial

The FR205G qualifies as a direct substitute based on matching voltage ratings, current ratings, recovery characteristics, and through-hole axial package configuration. Forward voltage variation and operating temperature range differences do not preclude substitution when circuit design margins accommodate these parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

FR205G (Taiwan Semiconductor Corporation) - Active Status

The FR205G is the designated substitute for the obsolete FR205. This part maintains electrical equivalence across all critical rectification parameters: 600 V reverse voltage rating, 2 A average rectified current, 250 ns reverse recovery time, and identical fast recovery speed classification.

The FR205G carries active product status, ensuring continued availability and supply chain reliability. The part is RoHS3 compliant, providing regulatory advantage over the original FR205. Both parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8541.10.0080).

Forward voltage increases from 1.2 V to 1.3 V at 2 A, representing a 0.1 V differential. Capacitance decreases from 30 pF to 10 pF at 4 V, 1 MHz. Operating temperature range extends from -55°C to 150°C, providing wider thermal coverage than the original -65°C to 125°C specification. These parameter variations fall within acceptable engineering tolerances for general-purpose rectification applications.

Through-hole axial package configuration remains identical (DO-204AC, DO-15), ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can FR205G replace FR205 in existing circuit designs?

A: Yes. The FR205G maintains electrical equivalence for the critical rectification parameters: 600 V reverse voltage, 2 A average rectified current, 250 ns reverse recovery time, and fast recovery speed classification. Forward voltage and capacitance variations are within acceptable engineering tolerances for general-purpose rectifier applications.

Q: Are the packages physically identical?

A: Yes. Both FR205 and FR205G use the through-hole axial DO-204AC (DO-15) package. Physical dimensions and lead spacing are equivalent, allowing direct PCB substitution without layout modifications.

Q: What is the difference in forward voltage between these parts?

A: The FR205 specifies 1.2 V maximum forward voltage at 2 A, while the FR205G specifies 1.3 V maximum at 2 A. This 0.1 V difference represents approximately 8% variation and is within standard engineering tolerances for rectifier diode applications.

Q: Does the FR205G have better temperature performance?

A: The FR205G operating temperature range extends from -55°C to 150°C, compared to the FR205 range of -65°C to 125°C. The FR205G provides wider high-temperature capability (+25°C extension) but narrower low-temperature capability (-10°C reduction). Circuit thermal requirements determine whether this difference is significant.

Q: What is the capacitance difference, and does it matter?

A: The FR205 specifies 30 pF at 4 V, 1 MHz, while the FR205G specifies 10 pF at the same conditions. Lower capacitance in the FR205G may provide marginal benefits in high-frequency switching applications but is not a limiting factor for standard rectification circuits.

Q: Is the FR205G RoHS compliant?

A: Yes. The FR205G is RoHS3 compliant. The original FR205 does not specify RoHS status. This compliance advantage makes the FR205G preferable for applications subject to RoHS regulatory requirements.

Q: Are there any supply chain advantages to using FR205G?

A: Yes. The FR205G carries active product status with 7,672 pieces in stock, while the FR205 is classified as obsolete. Active status ensures continued availability, shorter lead times, and supply chain reliability for ongoing production and maintenance applications.

Q: What is the moisture sensitivity level for both parts?

A: Both FR205 and FR205G carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.