LL103A-7 Equivalent & Substitute Parts

Part Overview

The LL103A-7 is a Schottky diode rated for 40 V DC reverse voltage and 200 mA average rectified current in a surface mount SOD-80 MiniMELF package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The LL103A-7 remains available in inventory with 824 pieces in stock, but active alternatives with improved availability are available through parametric equivalents and manufacturer-recommended substitutes.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	200 mA
Voltage - Forward (Vf) (Max) @ If	600 mV @ 200 mA
Reverse Recovery Time (trr)	10 ns
Current - Reverse Leakage @ Vr	5 µA @ 30 V
Capacitance @ Vr, F	50 pF @ 0 V, 1 MHz
Package / Case	DO-213AC, MINI-MELF, SOD-80
Mounting Type	Surface Mount
Operating Temperature - Junction (Max)	125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LL103A-7 are categorized into two groups based on substitution type and electrical characteristics:

Parametric Equivalents (LL103A-GS08, LL103A-GS18): These parts maintain identical electrical specifications across all critical parameters including voltage rating (40 V), current rating (200 mA), forward voltage (600 mV @ 200 mA), reverse recovery time (10 ns), reverse leakage current (5 µA @ 30 V), and capacitance (50 pF @ 0 V, 1 MHz). Both are manufactured by Vishay General Semiconductor - Diodes Division and use the same SOD-80 MiniMELF package. The primary differences are packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and product status (both active). These parts are direct functional replacements.

Manufacturer-Recommended Substitute (BAS86,115): This Nexperia part is rated for 50 V DC reverse voltage and maintains the 200 mA current rating. While the forward voltage specification differs (900 mV @ 100 mA versus 600 mV @ 200 mA), the reverse recovery time is superior (4 ns versus 10 ns), and the capacitance is significantly lower (8 pF @ 1 V, 1 MHz versus 50 pF @ 0 V, 1 MHz). The BAS86,115 is also housed in a compatible SOD-80 MiniMELF package. This part provides enhanced performance characteristics suitable for applications requiring faster switching or lower capacitance.

Parameter Comparison

Parameter	LL103A-7	LL103A-GS08	LL103A-GS18	BAS86,115
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Nexperia USA Inc.
Product Status	Obsolete	Active	Active	Active
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	50 V
Current - Average Rectified (Io)	200 mA	200 mA	200 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	600 mV @ 200 mA	600 mV @ 200 mA	600 mV @ 200 mA	900 mV @ 100 mA
Reverse Recovery Time (trr)	10 ns	10 ns	10 ns	4 ns
Current - Reverse Leakage @ Vr	5 µA @ 30 V	5 µA @ 30 V	5 µA @ 30 V	5 µA @ 40 V
Capacitance @ Vr, F	50 pF @ 0 V, 1 MHz	50 pF @ 0 V, 1 MHz	50 pF @ 0 V, 1 MHz	8 pF @ 1 V, 1 MHz
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction (Max)	125°C	125°C	125°C	125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	824 Pcs New Original In Stock	57900 Pcs New Original In Stock	10250 Pcs New Original In Stock	16998 Pcs New Original In Stock

Engineering Selection Recommendations

For Direct Replacement: Select LL103A-GS08 or LL103A-GS18 when the application requires identical electrical performance to the LL103A-7. Both parts are active products with superior inventory availability (57,900 and 10,250 pieces respectively versus 824 pieces for the obsolete LL103A-7). The choice between LL103A-GS08 and LL103A-GS18 depends on packaging requirements: LL103A-GS08 is supplied in Cut Tape & Digi-Reel format, while LL103A-GS18 is supplied in Tape & Reel format. Both maintain full ROHS3 compliance and MSL 1 rating.

For Enhanced Performance: Select BAS86,115 when the application benefits from improved switching characteristics or reduced capacitance. The BAS86,115 offers a 4 ns reverse recovery time (compared to 10 ns) and 8 pF capacitance (compared to 50 pF), making it suitable for higher-frequency switching applications. The 50 V voltage rating provides additional design margin over the 40 V LL103A-7 rating. The BAS86,115 is also an active product with 16,998 pieces in inventory. Note that the forward voltage specification is measured at different current levels (100 mA versus 200 mA), requiring circuit-level evaluation for applications sensitive to forward voltage characteristics.

All substitute parts maintain compliance with ROHS3, REACH Unaffected status, and MSL 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes.

Frequently Asked Questions (FAQ)

Q: Can LL103A-GS08 and LL103A-GS18 be used interchangeably with LL103A-7?

A: Yes. Both LL103A-GS08 and LL103A-GS18 are parametric equivalents with identical electrical specifications. The only differences are packaging format and product status. LL103A-GS08 uses Cut Tape & Digi-Reel packaging, while LL103A-GS18 uses Tape & Reel packaging. Selection depends on your procurement and assembly process requirements.

Q: What are the key differences between the Vishay LL103A variants and the Nexperia BAS86,115?

A: The primary differences are voltage rating (50 V for BAS86,115 versus 40 V for LL103A variants), reverse recovery time (4 ns versus 10 ns), and capacitance (8 pF versus 50 pF). The forward voltage is specified at different current levels. These differences make BAS86,115 suitable for applications requiring faster switching or lower capacitance, while LL103A variants are direct replacements for existing designs.

Q: Is the BAS86,115 a direct replacement for LL103A-7?

A: The BAS86,115 is a functional substitute with enhanced performance characteristics, not a direct replacement. While both are 200 mA Schottky diodes in SOD-80 packages, the BAS86,115 has a higher voltage rating (50 V versus 40 V) and different switching and capacitance characteristics. Circuit-level evaluation is required to confirm suitability for specific applications.

Q: Why is the LL103A-7 classified as obsolete?

A: The LL103A-7 is obsolete, but active alternatives (LL103A-GS08 and LL103A-GS18) with identical specifications are available. These active variants ensure continued supply for new designs and production continuity.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts (LL103A-GS08, LL103A-GS18, and BAS86,115) are ROHS3 compliant with MSL 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and environmental regulations.

Q: What packaging formats are available for the LL103A variants?

A: LL103A-GS08 is supplied in Cut Tape & Digi-Reel format, while LL103A-GS18 is supplied in Tape & Reel format. Both use the SOD-80 MiniMELF package. Selection depends on your assembly equipment and procurement workflow.

Q: Can I use BAS86,115 in a circuit designed for LL103A-7 without modifications?

A: The BAS86,115 has different electrical characteristics (higher voltage rating, faster switching, lower capacitance). While the SOD-80 package is compatible, circuit-level evaluation is required to confirm performance equivalence for your specific application, particularly regarding forward voltage and switching speed requirements.

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