SL02-GS18 Equivalent & Substitute Parts

Part Overview

The SL02-GS18 is an active Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 20V DC reverse voltage with 1.1A average rectified current in a DO-219AB package. The device is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1) and is suitable for fast recovery rectification applications requiring low forward voltage drop and rapid switching characteristics. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	1.1	A
Voltage - Forward (Vf) (Max) @ If	420 mV @ 1.1 A	mV
Reverse Recovery Time (trr)	10	ns
Current - Reverse Leakage @ Vr	250	µA @ 20 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Technology	Schottky	—
Package / Case	DO-219AB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	125	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution of the SL02-GS18 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 20V minimum
Current - Average Rectified (Io): 1.1A minimum
Technology: Schottky
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 10ns or faster
Current - Reverse Leakage @ Vr: 250µA or lower @ 20V
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Parametric Equivalents (SL02-GS08, SL02-M-08, SL02-M-18) are Vishay devices within the same eSMP® series that match all electrical specifications and package requirements of the main part.

Direct Substitutes (B0520LW-7-F, B0520LWQ-7-F) are Diodes Incorporated components with identical voltage and reverse leakage specifications. These devices operate at 500mA average rectified current, which is lower than the main part's 1.1A rating, making them suitable for applications with reduced current requirements while maintaining voltage and leakage compliance.

Manufacturer Recommended Substitutes (PMEG series from Nexperia USA Inc.) are Schottky diodes with 20V reverse voltage rating and fast recovery characteristics. These parts vary in current ratings (500mA to 1A), forward voltage drop, and package types (SOD-123F, SOD-123W), offering design alternatives based on thermal and spatial constraints.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	trr [ns]	Ir @ Vr [µA]	Package	Temp Junction (Max) [°C]	RoHS Status
SL02-GS18	Vishay	20	1.1	420 @ 1.1A	10	250 @ 20V	DO-219AB	125	ROHS3
SL02-GS08	Vishay	20	1.1	420 @ 1.1A	10	250 @ 20V	DO-219AB	125	ROHS3
SL02-M-08	Vishay	20	1.1	420 @ 1.1A	10	250 @ 20V	DO-219AB	125	ROHS3
SL02-M-18	Vishay	20	1.1	420 @ 1.1A	10	250 @ 20V	DO-219AB	125	ROHS3
B0520LW-7-F	Diodes Inc.	20	0.5	385 @ 0.5A	≤500	250 @ 20V	SOD-123	125	ROHS3
B0520LWQ-7-F	Diodes Inc.	20	0.5	385 @ 0.5A	≤500	250 @ 20V	SOD-123	125	ROHS3
PMEG2005EH,115	Nexperia	20	0.5	390 @ 0.5A	≤500	200 @ 20V	SOD-123F	150	ROHS3
PMEG2010AEH,115	Nexperia	20	1.0	430 @ 1A	≤500	200 @ 20V	SOD-123F	150	ROHS3
PMEG2010BER,115	Nexperia	20	1.0	450 @ 1A	≤500	50 @ 20V	SOD-123W	150	ROHS3
PMEG2010EH,115	Nexperia	20	1.0	500 @ 1A	≤500	200 @ 20V	SOD-123F	150	ROHS3
PMEG2010ER,115	Nexperia	20	1.0	340 @ 1A	≤500	1 @ 20V	SOD-123W	150	ROHS3

Engineering Selection Recommendations

Parametric Equivalents (SL02-GS08, SL02-M-08, SL02-M-18): These Vishay eSMP® series diodes are direct parametric equivalents to the SL02-GS18. All electrical specifications, package type (DO-219AB), and compliance certifications are identical. These parts are suitable for direct replacement in existing designs without circuit modification. Product status is active for all variants.

Direct Substitutes (B0520LW-7-F, B0520LWQ-7-F): These Diodes Incorporated components maintain the 20V reverse voltage and 250µA reverse leakage specifications. The B0520LWQ-7-F variant includes AEC-Q101 automotive qualification. Current rating is 500mA, which is lower than the main part. These substitutes are applicable in circuits where the maximum current requirement does not exceed 500mA. Both are RoHS3 compliant and active products.

Manufacturer Recommended Substitutes (PMEG Series): Nexperia PMEG series diodes offer multiple package and performance options. PMEG2010AEH,115 and PMEG2010EH,115 provide 1A current rating with AEC-Q100 automotive qualification (AEH variant). PMEG2005EH,115 is rated for 500mA. PMEG2010BER,115 and PMEG2010ER,115 feature SOD-123W packaging with enhanced thermal characteristics. All PMEG variants operate at maximum junction temperature of 150°C, exceeding the main part's 125°C rating. All are RoHS3 compliant and active products.

Frequently Asked Questions (FAQ)

Q: Can SL02-GS08, SL02-M-08, and SL02-M-18 be used interchangeably with SL02-GS18?

A: Yes. These Vishay eSMP® series diodes are parametric equivalents with identical electrical specifications, package type (DO-219AB), and compliance status. They are direct replacements without circuit modification.

Q: What is the primary difference between the SL02-GS18 and the B0520LW-7-F?

A: The B0520LW-7-F is rated for 500mA average rectified current compared to the SL02-GS18's 1.1A rating. Both maintain 20V reverse voltage and 250µA reverse leakage. The B0520LW-7-F uses SOD-123 packaging instead of DO-219AB. This substitute is suitable only for applications with maximum current requirements of 500mA or less.

Q: Are PMEG series diodes suitable replacements for the SL02-GS18?

A: PMEG series diodes meet the 20V reverse voltage and fast recovery specifications. PMEG2010 variants (AEH, BER, EH, ER) are rated for 1A current, matching the main part's current capability. PMEG2005EH,115 is rated for 500mA. All PMEG variants feature higher maximum junction temperature (150°C vs. 125°C) and are RoHS3 compliant. Package types differ (SOD-123F, SOD-123W vs. DO-219AB), requiring PCB layout verification.

Q: What is the significance of the DO-219AB package versus SOD-123F or SOD-123W packages?

A: Package type affects PCB footprint, thermal dissipation, and assembly compatibility. The DO-219AB (SMF) is a specific surface mount package used in the main part. SOD-123F and SOD-123W are alternative surface mount packages with different dimensions and thermal characteristics. Substitution with different packages requires PCB layout verification and may affect thermal performance.

Q: Which substitute parts have automotive qualification?

A: B0520LWQ-7-F includes AEC-Q101 qualification. PMEG2010AEH,115 and PMEG2010EH,115 include AEC-Q100 qualification. These qualifications indicate suitability for automotive applications where specific reliability and testing standards are required.

Q: Can I use a 500mA-rated diode in place of the 1.1A SL02-GS18?

A: Only if the circuit's maximum current requirement does not exceed 500mA. Exceeding the rated current will cause excessive heat generation and potential device failure. Verify the actual circuit current demand before substituting with lower-rated alternatives such as B0520LW-7-F, B0520LWQ-7-F, or PMEG2005EH,115.

Q: What is the reverse leakage current difference between the main part and PMEG2010ER,115?

A: The SL02-GS18 specifies 250µA reverse leakage at 20V. The PMEG2010ER,115 specifies 1mA reverse leakage at 20V. This four-fold increase in leakage current may affect circuit performance in applications sensitive to leakage, such as precision analog circuits or low-power standby modes.

Q: Are all listed parts RoHS3 compliant?

A: Yes. All parts listed in this reference are RoHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component manufacturing and use.

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