RF505B6STL Equivalent & Substitute Parts Reference

Part Overview

The Rohm Semiconductor RF505B6STL is a surface mount, general-purpose diode (Diodes, Rectifiers) rated at 600 V reverse voltage and 5 A average rectified current. It features fast recovery characteristics (trr = 30 ns) and is supplied in a TO-252-3, DPAK (2 Leads + Tab), SC-63 package. The product is classified as obsolete, making it necessary to identify alternative models with equivalent electrical and mechanical parameters to ensure continued designs and supply.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	5A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 5 A
Speed	Fast Recovery ≤ 500ns, >200mA (Io)
Reverse Recovery Time (trr)	30 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)

Substitute Part Grouping Explanation

Substitution is determined strictly by matching the following key parameters: maximum DC reverse voltage, average rectified current, maximum forward voltage at rated current, recovery speed, reverse recovery time, reverse leakage current, mounting type, and package/case compatibility. Only parts matching these electrical and mechanical parameters are included. Additional grouping includes product compliance (RoHS, MSL), status (active vs. obsolete), and certifications as provided.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Operating Temp - Junction (Max)	RoHS Status	MSL	Product Status
RF505B6STL	Rohm Semiconductor	600 V	5A	1.7 V @ 5 A	Fast Recovery ≤ 500ns, >200mA (Io)	30 ns	10 µA @ 600 V	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	150°C	ROHS3 Compliant	1 (Unlimited)	Obsolete
RF505BM6STL	Rohm Semiconductor	600 V	5A	1.7 V @ 5 A	Fast Recovery ≤ 500ns, >200mA (Io)	30 ns	10 µA @ 600 V	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	150°C	ROHS3 Compliant	1 (Unlimited)	Active
RF505BM6SFHTL	Rohm Semiconductor	600 V	5A	1.7 V @ 5 A	Fast Recovery ≤ 500ns, >200mA (Io)	30 ns	10 µA @ 600 V	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	150°C	ROHS3 Compliant	1 (Unlimited)	Active
DURD560A	Littelfuse Inc.	600 V	5A	1.7 V @ 5 A	Fast Recovery ≤ 500ns, >200mA (Io)	35 ns	5 µA @ 600 V	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	150°C	ROHS3 Compliant	1 (Unlimited)	Active
STTH506B-TR	STMicroelectronics	600 V	5A	1.85 V @ 5 A	Fast Recovery ≤ 500ns, >200mA (Io)	50 ns	5 µA @ 600 V	Surface Mount	TO-252-3, DPAK (2 Leads + Tab), SC-63	175°C	ROHS3 Compliant	1 (Unlimited)	Active

Engineering Selection Recommendations

Selection among the listed substitute diodes is based on product status (active parts are available for supply where the main part is obsolete) and RoHS compliance, with all substitutes being ROHS3 Compliant and holding MSL 1 ratings. Parts with matching or closely comparable electrical parameters and identical package type are suitable substitutes from a compliance and certification standpoint given the provided data.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for selecting an equivalent diode substitute in this category?
A1: The primary criteria are maximum DC reverse voltage, average rectified current, maximum forward voltage at rated current, recovery time, reverse leakage, mounting type, and package compatibility.

Q2: What package must substitute diodes have to be direct replacements for RF505B6STL?
A2: Substitute diodes must have the TO-252-3, DPAK (2 Leads + Tab), SC-63 package.

Q3: Are all listed substitutes RoHS-compliant?
A3: Yes, all substitutes provided are ROHS3 Compliant.

Q4: Can these substitute parts handle the same operating junction temperature?
A4: All listed substitutes support at least 150°C maximum junction temperature, with STTH506B-TR supporting up to 175°C.

Q5: Is there a difference in forward voltage or reverse leakage for the suggested equivalents?
A5: All main substitutes have similar maximum forward voltage (1.7 V @ 5 A), except for STTH506B-TR, which has 1.85 V @ 5 A. Reverse leakage current ratings are 5 µA or 10 µA @ 600 V as specified.

Q6: Are active status parts preferable to obsolete parts for ongoing production?
A6: Yes, active status parts indicate continued manufacturer support and availability per the parameters provided.

Q7: Do the listed substitutes have the same mounting type as the RF505B6STL?
A7: Yes, all substitutes have a surface mount configuration using the same package/case type.

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