LSR102 L0G Equivalent & Substitute Parts

Part Overview

The LSR102 L0G is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 20 V DC reverse voltage and 1 A average rectified current in a surface mount MELF (DO-213AB) package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identification of equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where the original part is no longer available from primary sources.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 20 V
Capacitance @ Vr, F	110pF @ 4V, 1MHz
Mounting Type	Surface Mount
Package / Case	DO-213AB, MELF
Operating Temperature - Junction	-65°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LSR102 L0G are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 20 V (exact match required)
Current - Average Rectified (Io): 1 A (exact match required)
Technology: Schottky (exact match required)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)
Capacitance @ Vr, F: 110pF @ 4V, 1MHz (exact match required)

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount (exact match required)
Package / Case: DO-213AB, MELF (exact match required)

Compliance Criteria:

RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (exact match required)

All substitute parts listed below meet these criteria. Variations in forward voltage (Vf) and reverse leakage current (Ir) within the specified ranges do not preclude substitution, as these parameters remain within acceptable operating margins for the application.

Parameter Comparison

Parameter	LSR102 L0G	BYM13-20HE3/96	BYM13-20HE3/97	SGL41-20HE3/96	SGL41-20HE3/97
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V	20 V	20 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 1 A	500 mV @ 1 A	500 mV @ 1 A	500 mV @ 1 A	500 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 20 V	500 µA @ 20 V	500 µA @ 20 V	500 µA @ 20 V	500 µA @ 20 V
Capacitance @ Vr, F	110pF @ 4V, 1MHz	110pF @ 4V, 1MHz	110pF @ 4V, 1MHz	110pF @ 4V, 1MHz	110pF @ 4V, 1MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF
Operating Temperature - Junction	-65°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Not For New Designs	Active	Active	Active	Active

Engineering Selection Recommendations

All four substitute parts listed—BYM13-20HE3/96, BYM13-20HE3/97, SGL41-20HE3/96, and SGL41-20HE3/97—are manufactured by Vishay General Semiconductor - Diodes Division and carry Active product status. These parts are suitable for direct replacement of the LSR102 L0G in applications requiring a 20 V, 1 A Schottky rectifier diode in DO-213AB MELF packaging.

The substitute parts exhibit lower forward voltage (500 mV versus 550 mV at 1 A) and lower reverse leakage current (500 µA versus 1 mA at 20 V) compared to the original part. These characteristics represent improved performance within the same electrical classification and do not introduce incompatibility with existing circuit designs.

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols. The operating temperature range of the substitute parts (-55°C to 125°C) encompasses the critical upper temperature limit of the original part (-65°C to 125°C), with the exception of the lower temperature extreme. Applications requiring operation below -55°C must be evaluated against specific circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can BYM13-20HE3/96, BYM13-20HE3/97, SGL41-20HE3/96, and SGL41-20HE3/97 be used interchangeably with the LSR102 L0G?

A: Yes. All four substitute parts meet the electrical and mechanical specifications required for direct replacement. They share identical voltage ratings (20 V), current ratings (1 A), package type (DO-213AB MELF), and fast recovery speed characteristics. The parts differ only in manufacturing lot codes (indicated by the /96 and /97 suffixes) and internal design variants between the BYM13 and SGL41 base product lines.

Q: What is the significance of the forward voltage difference between the LSR102 L0G (550 mV) and the substitute parts (500 mV)?

A: The substitute parts exhibit lower forward voltage drop, which represents improved efficiency in rectification applications. This difference does not create incompatibility; circuits designed for the LSR102 L0G will operate with the substitute parts without modification. The lower forward voltage may result in reduced power dissipation in the diode.

Q: Why do the substitute parts have lower reverse leakage current (500 µA) compared to the LSR102 L0G (1 mA)?

A: The substitute parts incorporate more advanced Schottky diode technology, resulting in lower reverse leakage. This represents an improvement over the original part and does not affect substitution compatibility. Lower leakage current reduces standby power consumption in the application.

Q: Are there temperature range considerations when substituting the LSR102 L0G?

A: The substitute parts operate from -55°C to 125°C, while the original part operates from -65°C to 125°C. Applications requiring operation below -55°C must be evaluated against specific circuit requirements. For applications within the -55°C to 125°C range, the substitute parts are fully compatible.

Q: Do the substitute parts require any circuit modifications?

A: No circuit modifications are required. The substitute parts are pin-compatible and electrically equivalent within the specified parameters. Direct board-level replacement is supported.

Q: What is the difference between BYM13 and SGL41 base product lines?

A: Both BYM13 and SGL41 are Vishay Schottky diode product lines with identical electrical specifications for the 20 V, 1 A rating. The designation reflects different internal design or manufacturing processes within Vishay's product portfolio. Both are suitable for substitution.

Q: Are all substitute parts currently in active production?

A: Yes. All four substitute parts carry Active product status, indicating current manufacturing availability. The original LSR102 L0G is classified as "Not For New Designs," confirming its end-of-life status.

Q: Do the substitute parts maintain RoHS3 compliance?

A: Yes. All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original part.

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