RSFBL Equivalent & Substitute Parts Reference

Part Overview

The RSFBL is a surface-mount fast recovery diode manufactured by Taiwan Semiconductor Corporation. It features a 100 V reverse voltage, 0.5 A average rectified current, and a 150 ns reverse recovery time in a Sub SMA (SOD-123) package. This device is classified as "Not For New Designs," indicating that it is not recommended for use in new applications. As a result, it is necessary to identify equivalent or substitute models that maintain electrical and mechanical compatibility within the diodes, rectifiers product category.

Key Parameters

Parameter	RSFBL
Manufacturer	Taiwan Semiconductor Corporation
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	500mA
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA
Reverse Recovery Time (trr)	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Mounting Type	Surface Mount
Package / Case	SOD-123
Supplier Device Package	Sub SMA
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitutes for the RSFBL are determined strictly by matching or exceeding the following key electrical and mechanical parameters:

Reverse Voltage Rating (Vr)
Average Rectified Current (Io)
Forward Voltage Drop (Vf) at specified current
Reverse Recovery Time (trr)
Reverse Leakage Current (@ specified Vr)
Package Type and Mounting
Compliance and Environmental Status (RoHS, REACH)

Only substitutes fully matching or exceeding these parameters are listed.

Parameter Comparison

Parameter	RSFBL	RS1DLW
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Category	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	100 V	200 V
Current - Average Rectified (Io)	500mA	1A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA	1.3 V @ 1 A
Reverse Recovery Time (trr)	150 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 200 V
Mounting Type	Surface Mount	Surface Mount
Package / Case	SOD-123	SOD-123W
Supplier Device Package	Sub SMA	SOD-123W
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The RSFBL is marked as "Not For New Designs." The substitute RS1DLW is an active product with ROHS3 compliance and REACH unaffected status matching environmental requirements. ECCN is consistent across both parts. Selection is guided solely by product status and compliance attributes provided.

Frequently Asked Questions (FAQ)

Q1: On what basis is RS1DLW considered a substitute for RSFBL?
A1: Substitution is based on matching or exceeding electrical parameters including reverse voltage, forward voltage, average rectified current, reverse recovery time, reverse leakage, and identical environmental compliance.

Q2: Are there differences in package type between RSFBL and RS1DLW?
A2: Yes, RSFBL uses SOD-123 (Sub SMA) and RS1DLW uses SOD-123W. Both are surface mount packages in the same product category.

Q3: Does the substitute meet the same RoHS and REACH compliance criteria?
A3: Both RSFBL and RS1DLW are ROHS3 compliant and REACH unaffected.

Q4: Is the operating temperature range comparable?
A4: RSFBL is rated for -55°C ~ 150°C. RS1DLW extends this range up to 175°C.

Q5: Are there any changes in electrical performance with the substitute?
A5: The RS1DLW offers higher reverse voltage and average rectified current, while maintaining equivalent forward voltage and reverse recovery characteristics as specified.

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