RFUH5TF6SC9 Equivalent & Substitute Parts

Part Overview

The RFUH5TF6SC9 is a general-purpose rectifier diode manufactured by Rohm Semiconductor, rated for 600 V DC reverse voltage and 5 A average rectified current in a TO-220ACFP through-hole package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	2.8 @ 5	V @ A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	25	ns
Current - Reverse Leakage @ Vr	10	µA @ 600 V
Mounting Type	Through Hole	—
Package / Case	TO-220-2 Full Pack	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the RFUH5TF6SC9 are qualified based on the following criteria:

Mandatory Compatibility Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Mounting Type: Through Hole
Package / Case: TO-220-2 Full Pack or compatible TO-220 variant
Technology: Standard rectifier diode
RoHS Status: ROHS3 Compliant

Performance Parameters (Allowable Variation):

Current - Average Rectified (Io): Equal to or greater than 5 A
Voltage - Forward (Vf) (Max) @ If: Equal to or less than 2.8 V at rated current
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): Equal to or less than 25 ns
Current - Reverse Leakage @ Vr: Equal to or less than 10 µA @ 600 V

All substitute parts listed meet or exceed the electrical specifications of the RFUH5TF6SC9 while maintaining mechanical and thermal compatibility within the TO-220 package family.

Parameter Comparison

Parameter	RFUH5TF6SC9 (Rohm)	BYC20X-600PQ (WeEn)	STTH15AC06FP (STMicroelectronics)	VS-ETL1506FP-M3 (Vishay)
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	5 A	20 A	15 A	15 A
Voltage - Forward (Vf) (Max) @ If	2.8 V @ 5 A	2.5 V @ 20 A	1.9 V @ 15 A	1.07 V @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	25 ns	35 ns	55 ns	210 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	2 µA @ 600 V	15 µA @ 600 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-2 Full Pack	TO-220-2 Full Pack, Isolated Tab	TO-220-2 Full Pack	TO-220-2 Full Pack
Operating Temperature - Junction (Max)	150°C	175°C	175°C	175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

RFUH5TF6SC9 (Rohm Semiconductor) - Primary Part

The RFUH5TF6SC9 is the specified component with Active product status, RoHS3 compliance, and REACH unaffected designation. This part is suitable for applications requiring 5 A rectification at 600 V with a 25 ns reverse recovery time.

BYC20X-600PQ (WeEn Semiconductors) - Higher Current Capacity Substitute

The BYC20X-600PQ provides 20 A current capacity with identical 600 V reverse voltage rating and fast recovery characteristics. This substitute is applicable in designs where higher current headroom is required or where the 5 A specification represents a minimum threshold. The part maintains RoHS3 compliance and features an isolated tab variant of the TO-220-2 package. Operating temperature maximum of 175°C exceeds the primary part specification.

STTH15AC06FP (STMicroelectronics) - Mid-Range Current Substitute

The STTH15AC06FP offers 15 A average rectified current with superior forward voltage characteristics (1.9 V @ 15 A) and lower reverse leakage (2 µA @ 600 V). This substitute is suitable for applications where thermal efficiency and leakage current minimization are design priorities. RoHS3 compliance and 175°C maximum junction temperature are maintained.

VS-ETL1506FP-M3 (Vishay General Semiconductor) - Lowest Forward Voltage Substitute

The VS-ETL1506FP-M3 is a FRED Pt® series diode with the lowest forward voltage drop (1.07 V @ 15 A) among the substitute options, providing superior efficiency in high-frequency switching applications. This part is supplied in bulk packaging and maintains RoHS3 compliance. The extended operating temperature range (-65°C to 175°C) accommodates wider environmental specifications. Reverse recovery time of 210 ns is longer than the primary part and should be evaluated for switching frequency compatibility.

All substitute parts are Active product status with RoHS3 compliance and REACH unaffected designation, ensuring regulatory alignment with the primary component.

Frequently Asked Questions (FAQ)

Q: Can the BYC20X-600PQ be used as a direct replacement for the RFUH5TF6SC9?

A: The BYC20X-600PQ is electrically compatible as a substitute. Both parts share 600 V reverse voltage rating, fast recovery characteristics, and TO-220-2 package compatibility. The higher 20 A current rating of the BYC20X-600PQ provides additional design margin. Pin configuration and thermal characteristics are compatible with the RFUH5TF6SC9 footprint.

Q: What is the difference between the TO-220ACFP and TO-220FP package designations?

A: Both designations refer to TO-220-2 Full Pack through-hole packages with two leads. The ACFP and FP suffixes indicate manufacturer-specific package variants. The BYC20X-600PQ features an isolated tab option in the TO-220FP variant, which may provide additional thermal or electrical isolation depending on circuit design requirements.

Q: Which substitute part has the lowest forward voltage drop?

A: The VS-ETL1506FP-M3 exhibits the lowest forward voltage drop at 1.07 V @ 15 A, compared to 2.8 V @ 5 A for the RFUH5TF6SC9. This characteristic reduces power dissipation and heat generation in rectification circuits, making it suitable for high-efficiency applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The RFUH5TF6SC9, BYC20X-600PQ, STTH15AC06FP, and VS-ETL1506FP-M3 are all RoHS3 compliant and REACH unaffected, ensuring regulatory compliance across all substitute options.

Q: What is the significance of reverse recovery time in diode selection?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference characteristics. The RFUH5TF6SC9 specifies 25 ns, the fastest among the options. The VS-ETL1506FP-M3 at 210 ns is significantly longer and should be evaluated for applications with high switching frequencies where recovery time impacts circuit performance.

Q: Can the STTH15AC06FP be used in applications requiring the full 5 A specification of the RFUH5TF6SC9?

A: Yes. The STTH15AC06FP is rated for 15 A average rectified current, which exceeds the 5 A requirement. The part is fully compatible with circuits designed for the RFUH5TF6SC9 and provides additional current capacity and improved thermal characteristics.

Q: What packaging format is the VS-ETL1506FP-M3 supplied in?

A: The VS-ETL1506FP-M3 is supplied in bulk packaging, whereas the RFUH5TF6SC9 and other substitutes are supplied in tube packaging. Bulk packaging may affect inventory management and component handling procedures.

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