FRA805GF-BP Equivalent & Substitute Parts

Part Overview

The FRA805GF-BP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600V DC reverse voltage and 8A average rectified current in a through-hole TO-220-2 isolated tab package. This component is classified as obsolete, making identification of active equivalent parts necessary for ongoing design support and procurement continuity. The fast recovery characteristic (≤500ns) and 250ns reverse recovery time position this diode for applications requiring rapid switching performance in power conversion circuits.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 8	V @ A
Speed Classification	Fast Recovery ≤500ns, >200mA	-
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600V
Mounting Type	Through Hole	-
Package / Case	TO-220-2 Isolated Tab	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the FRA805GF-BP is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 600V minimum
Current - Average Rectified (Io): 8A minimum
Voltage - Forward (Vf) (Max) @ If: 1.3V or lower at 8A
Speed Classification: Fast Recovery technology
Technology: Standard rectifier diode

Mechanical Equivalence Criteria:

Mounting Type: Through Hole
Package / Case: TO-220-2 configuration with isolated tab
Pin compatibility with ITO-220AC or equivalent footprints

Compliance Criteria:

RoHS3 Compliant status
Moisture Sensitivity Level (MSL): 1 (Unlimited)

The STTH8L06FP meets all electrical and mechanical substitution criteria while maintaining active product status and full regulatory compliance.

Parameter Comparison

Parameter	FRA805GF-BP	STTH8L06FP	Match Status
Manufacturer	Micro Commercial Co	STMicroelectronics	Different
Product Status	Obsolete	Active	Substitute is Active
Voltage - DC Reverse (Vr) (Max)	600V	600V	Equivalent
Current - Average Rectified (Io)	8A	8A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.3V @ 8A	1.3V @ 8A	Equivalent
Speed Classification	Fast Recovery ≤500ns, >200mA	Fast Recovery ≤500ns, >200mA	Equivalent
Reverse Recovery Time (trr)	250ns	105ns	Substitute Superior
Current - Reverse Leakage @ Vr	5µA @ 600V	8µA @ 600V	Within Tolerance
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	TO-220-2 Isolated Tab	TO-220-2 Full Pack, Isolated Tab	Compatible
Operating Temperature - Junction (Max)	150°C	175°C	Substitute Superior
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

The STTH8L06FP is a direct functional substitute for the obsolete FRA805GF-BP. Both devices share identical electrical ratings for voltage, current, and forward voltage characteristics, with both classified as fast recovery rectifier diodes. The STTH8L06FP offers performance advantages including reduced reverse recovery time (105ns versus 250ns) and higher maximum junction temperature rating (175°C versus 150°C), making it suitable for applications with more demanding thermal or switching speed requirements.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity classification, ensuring compatibility with current manufacturing and environmental standards. The STTH8L06FP is currently in active production status with substantial inventory availability (19,822 pieces), providing supply chain continuity for designs transitioning from the obsolete FRA805GF-BP.

Package compatibility is confirmed for both TO-220-2 isolated tab configurations, supporting direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the STTH8L06FP directly replace the FRA805GF-BP in existing designs?

A: Yes. Both devices are rated for 600V reverse voltage, 8A average rectified current, and 1.3V forward voltage at 8A. The TO-220-2 isolated tab package footprints are compatible, enabling direct substitution without PCB redesign.

Q: What are the key differences between these two diodes?

A: The primary differences are manufacturer (Micro Commercial Co versus STMicroelectronics) and product status (obsolete versus active). The STTH8L06FP provides superior reverse recovery time (105ns versus 250ns) and higher maximum junction temperature (175°C versus 150°C). Reverse leakage current is slightly higher in the STTH8L06FP (8µA versus 5µA at 600V), remaining within acceptable operating margins.

Q: Are there any package considerations when substituting these parts?

A: Both parts use TO-220-2 isolated tab packages with through-hole mounting. The STTH8L06FP is supplied in tube packaging, while the FRA805GF-BP packaging format is not specified. This difference affects procurement and handling but does not impact electrical or mechanical compatibility.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the FRA805GF-BP and STTH8L06FP are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity classification. The STTH8L06FP additionally carries REACH unaffected status.

Q: Which part should be selected for new designs?

A: The STTH8L06FP should be selected for new designs due to its active product status, superior performance characteristics, and assured long-term availability. The FRA805GF-BP is obsolete and should only be used for legacy system maintenance where substitution is not feasible.

Q: Is thermal performance a consideration in selecting between these parts?

A: The STTH8L06FP supports higher maximum junction temperature (175°C versus 150°C), providing additional thermal margin in high-power applications. The reduced reverse recovery time (105ns versus 250ns) also reduces switching losses, contributing to lower thermal generation in fast-switching circuits.

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