RF05VA1STR Equivalent & Substitute Parts Reference

Part Overview

The Rohm Semiconductor RF05VA1STR is a surface-mount, general-purpose diode within the Diodes, Rectifiers category. Key features include a 100 V reverse voltage, 500 mA average rectified current, fast recovery (25 ns trr), and a maximum forward voltage of 980 mV at 500 mA. The device is supplied in a SOD-323F (SC-90) package and is designated as active. Identification of alternative models is often required when addressing supply chain continuity, volume procurement, or when ensuring compliance with inventory policies.

Key Parameters

Parameter	Value
Manufacturer Part Number	RF05VA1STR
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	500 mA
Voltage - Forward (Vf) (Max) @ If	980 mV @ 500 mA
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	25 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V
Mounting Type	Surface Mount
Package / Case	SC-90, SOD-323F
Supplier Device Package	TUMD2
Operating Temperature - Junction	150°C (Max)
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution is determined by verifying that the alternative diode matches on key operational parameters: voltage - DC reverse (Vr), current - average rectified (Io), voltage - forward (Vf) at specified current, reverse recovery speed, reverse leakage current, package type, mounting method, operating temperature range, RoHS compliance, moisture sensitivity level (MSL), and REACH status. Only models where these parameters align with the main part are suitable as substitutes.

Key parameters for substitution:

Voltage - DC Reverse (Vr) (Max)
Current - Average Rectified (Io)
Voltage - Forward (Vf) (Max) at indicated current
Speed (Fast Recovery) and Reverse Recovery Time (trr)
Current - Reverse Leakage @ Vr
Mounting Type
Package / Case
Supplier Device Package
Operating Temperature - Junction
RoHS Status
MSL
REACH Status

Parameter Comparison

Parameter	RF05VA1STR (Main)	RF05VAM1STR	BAS16J,115	1N4148WSF-7
Manufacturer	Rohm Semiconductor	Rohm Semiconductor	Nexperia USA Inc.	Diodes Incorporated
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	500 mA	500 mA	250 mA	250 mA
Voltage - Forward (Vf) (Max) @ If	980 mV @ 500 mA	980 mV @ 500 mA	1.25 V @ 150 mA	1.25 V @ 150 mA
Speed	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	25 ns	25 ns	4 ns	4 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V	500 nA @ 80 V	500 nA @ 80 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-90, SOD-323F	2-SMD, Flat Lead	SC-90, SOD-323F	SC-90, SOD-323F
Supplier Device Package	TUMD2	TUMD2S	SOD-323F	SOD-323F
Operating Temperature - Junction	150°C (Max)	150°C (Max)	150°C (Max)	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

RF05VA1STR, RF05VAM1STR, BAS16J,115, and 1N4148WSF-7 are indicated as active products, all compliant with ROHS3, MSL 1 (Unlimited), and REACH Unaffected status. Selection among these alternatives can be based on availability, supply format, and matching compliance requirements in the application context, as all substitutes meet the listed compliance and status criteria.

Frequently Asked Questions (FAQ)

Q1: Which parameters are essential when selecting a substitute for RF05VA1STR?
A1: Key matching parameters include voltage - DC reverse (Vr) (Max), current - average rectified (Io), voltage - forward (Vf) at applicable current, reverse recovery time (trr), speed classification, reverse leakage current, package type, mounting type, operating temperature, RoHS status, moisture sensitivity level, and REACH status.

Q2: Can I use a diode with a different average rectified current (Io)?
A2: Only diodes with equal or higher Io values should be considered, as lower current ratings may not meet the same performance for the intended application.

Q3: How important is the package type in the substitution process?
A3: Package type (e.g., SC-90, SOD-323F, TUMD2, TUMD2S) is critical due to PCB footprint and mechanical compatibility requirements.

Q4: Are all listed substitutes lead (Pb)-free and compliant with environmental standards?
A4: All substitutes in the comparison table are specified as ROHS3 compliant and REACH unaffected.

Q5: Do all substitutes have the same reverse recovery speed?
A5: All listed substitutes meet the Fast Recovery classification, but the specified reverse recovery time (trr) ranges from 4 ns to 25 ns. Verify trr with application needs according to listed values.

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