RFN5B6STL Equivalent & Substitute Parts Reference

Part Overview

The RFN5B6STL by Rohm Semiconductor is a surface mount general-purpose fast recovery diode, specified for 600 V reverse voltage and 5 A average rectified current, encapsulated in a TO-252-3 (DPAK) package. The device incorporates a standard technology platform and is qualified with a 50 ns maximum reverse recovery time. As the product status is listed Obsolete, engineers are required to source equivalent or substitute rectifiers to ensure ongoing production and maintenance support in applications originally designed for RFN5B6STL.

Key Parameters

Parameter	Value
Manufacturer Part Number	RFN5B6STL
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	5A
Voltage - Forward (Vf) (Max) @ If	1.55 V @ 5 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Operating Temperature - Junction	150°C (Max)
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitute parts are grouped strictly according to parametric matching with the RFN5B6STL. The key allowed parameters considered for substitution include:

Voltage - DC Reverse (Vr) (Max)
Current - Average Rectified (Io)
Voltage - Forward (Vf) (Max) @ If
Speed (Recovery Time/trr)
Current - Reverse Leakage @ Vr
Mounting Type
Package / Case
Operating Temperature - Junction
RoHS Status
Moisture Sensitivity Level (MSL)
REACH Status
ECCN

Only rectifiers matching or exceeding the electrical and mechanical specifications in these parameters have been included as substitutes.

Parameter Comparison

Parameter	RFN5B6STL Rohm Semiconductor	RFN5BM6SFHTL Rohm Semiconductor	STTH506B-TR STMicroelectronics
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V
Current - Average Rectified (Io)	5A	5A	5A
Voltage - Forward (Vf) (Max) @ If	1.55 V @ 5 A	1.55 V @ 5 A	1.85 V @ 5 A
Speed / Reverse Recovery Time (trr)	Fast Recovery =< 500ns, > 200mA (Io); 50 ns	Fast Recovery =< 500ns, > 200mA (Io); 50 ns	Fast Recovery =< 500ns, > 200mA (Io); 50 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	5 µA @ 600 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Operating Temperature - Junction	150°C (Max)	150°C (Max)	175°C (Max)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

Selection between the substitute rectifiers can be made by considering the part product status and the presence of compliance certifications such as RoHS, MSL, and REACH. RFN5BM6SFHTL and STTH506B-TR are listed as active parts and hold identical compliance attributes to the original RFN5B6STL, ensuring regulatory alignment for replacement within existing qualified designs.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical for selecting an equivalent diode rectifier?
A1: Key parameters include Voltage - DC Reverse (Vr) (Max), Current - Average Rectified (Io), Voltage - Forward (Vf) (Max), Reverse Recovery Time (trr), package type, mounting method, RoHS status, MSL, REACH compliance, and ECCN.

Q2: Are the substitute diodes pin-compatible and mechanically compatible with RFN5B6STL?
A2: All substitute diodes listed use the TO-252-3 (DPAK) package and surface mount type, ensuring mechanical and pin compatibility.

Q3: Does the operating temperature impact compatibility?
A3: The maximum junction operating temperature for substitutes is equal to or exceeds that of the main part, aligning with original design requirements.

Q4: Can the substitute parts be used in automotive applications?
A4: Among substitutes, the RFN5BM6SFHTL lists Automotive Grade and AEC-Q101 qualification in its description.

Q5: How does substituting with a part with a different reverse leakage or forward voltage affect compatibility?
A5: Only parameters explicitly matching or exceeding the specification are included for substitution. Differences within the specified range are considered compatible by the substitution criteria defined.

Q6: What compliance certifications are common between the main and substitute parts?
A6: All listed parts are ROHS3 Compliant, have MSL 1 (Unlimited), REACH Unaffected status, and share the same ECCN classification.

Q7: Is moisture sensitivity critical for direct substitution?
A7: All parts have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), supporting direct substitution without additional handling concerns.

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