LL101A-13 Equivalent & Substitute Parts

Part Overview

The LL101A-13 is a Schottky diode rated for 60 V DC reverse voltage with 30 mA average rectified current in a surface mount SOD-80 MiniMELF package. This part is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing production and procurement requirements. The LL101A-13 meets automotive-grade specifications with AEC-Q101 qualification and is RoHS3 compliant.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	60 V
Current - Average Rectified (Io)	30 mA
Voltage - Forward (Vf) (Max) @ If	410 mV @ 1 mA
Reverse Recovery Time (trr)	1 ns
Current - Reverse Leakage @ Vr	200 nA @ 50 V
Capacitance @ Vr, F	2 pF @ 0 V, 1 MHz
Package / Case	DO-213AC, MINI-MELF, SOD-80
Operating Temperature - Junction (Max)	125°C
Grade	Automotive
Qualification	AEC-Q101
Technology	Schottky

Substitute Part Grouping Explanation

Substitute parts for the LL101A-13 are identified based on matching electrical and mechanical parameters within the allowed specifications for Schottky diode rectifiers. The substitution logic is structured as follows:

Direct Manufacturer Substitute (LL101A-GS18): This part maintains identical electrical ratings for voltage (60 V), current (30 mA), reverse recovery time (1 ns), reverse leakage current (200 nA @ 50 V), and capacitance (2 pF @ 0 V, 1 MHz). The forward voltage specification differs at 1 V @ 15 mA versus 410 mV @ 1 mA, reflecting different measurement conditions. Both parts share the same package (SOD-80 MiniMELF), automotive grade, AEC-Q101 qualification, and RoHS3 compliance. LL101A-GS18 is active and available in Tape & Reel packaging.

Parametric Equivalent (LL101A-GS08): This part provides identical electrical performance across all specified parameters, including forward voltage (410 mV @ 1 mA), reverse voltage (60 V), current rating (30 mA), reverse recovery time (1 ns), reverse leakage (200 nA @ 50 V), and capacitance (2 pF @ 0 V, 1 MHz). The package, mounting type, and compliance certifications are identical. LL101A-GS08 is active and available in Tape & Reel packaging.

Parameter Comparison

Parameter	LL101A-13 (Main)	LL101A-GS18 (Direct Substitute)	LL101A-GS08 (Parametric Equivalent)
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	60 V
Current - Average Rectified (Io)	30 mA	30 mA	30 mA
Voltage - Forward (Vf) (Max) @ If	410 mV @ 1 mA	1 V @ 15 mA	410 mV @ 1 mA
Reverse Recovery Time (trr)	1 ns	1 ns	1 ns
Current - Reverse Leakage @ Vr	200 nA @ 50 V	200 nA @ 50 V	200 nA @ 50 V
Capacitance @ Vr, F	2 pF @ 0 V, 1 MHz	2 pF @ 0 V, 1 MHz	2 pF @ 0 V, 1 MHz
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Operating Temperature - Junction (Max)	125°C	125°C	125°C
Grade	Automotive	Automotive	Automotive
Qualification	AEC-Q101	AEC-Q101	AEC-Q101
Technology	Schottky	Schottky	Schottky
Product Status	Obsolete	Active	Active
Packaging Type	Not specified	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Both LL101A-GS18 and LL101A-GS08 are active alternatives to the obsolete LL101A-13. Selection between these substitutes is based on the following criteria:

LL101A-GS08 is the preferred parametric equivalent when forward voltage characteristics at 410 mV @ 1 mA are critical to circuit design. This part provides exact electrical parameter matching across all specified conditions and maintains identical automotive-grade AEC-Q101 qualification and RoHS3 compliance.

LL101A-GS18 is suitable for applications where forward voltage is measured at higher current conditions (1 V @ 15 mA). This part also maintains full automotive-grade compliance and AEC-Q101 qualification. The selection between LL101A-GS18 and LL101A-GS08 depends on the specific forward voltage operating point required by the circuit design.

Both substitutes are supplied in Tape & Reel packaging and carry identical compliance certifications (RoHS3, REACH Unaffected, EAR99). Both are manufactured by Vishay General Semiconductor - Diodes Division and share the same base product number (LL101).

Frequently Asked Questions (FAQ)

Q: Why is the LL101A-13 being replaced? A: The LL101A-13 is classified as obsolete. Active alternatives LL101A-GS18 and LL101A-GS08 provide equivalent electrical performance and are currently in production.

Q: Are the substitute parts pin-compatible with the LL101A-13? A: Yes. Both LL101A-GS18 and LL101A-GS08 use the identical SOD-80 MiniMELF package (DO-213AC) with the same pinout and footprint as the LL101A-13.

Q: What is the difference between LL101A-GS18 and LL101A-GS08? A: The primary difference is the forward voltage specification. LL101A-GS08 specifies 410 mV @ 1 mA, matching the original LL101A-13. LL101A-GS18 specifies 1 V @ 15 mA, representing a different measurement condition. All other electrical parameters are identical.

Q: Do the substitute parts meet automotive qualification requirements? A: Yes. Both LL101A-GS18 and LL101A-GS08 carry automotive-grade classification with AEC-Q101 qualification, matching the original LL101A-13.

Q: Are the substitute parts RoHS compliant? A: Yes. Both LL101A-GS18 and LL101A-GS08 are RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: What packaging is available for the substitute parts? A: Both LL101A-GS18 and LL101A-GS08 are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: Can I use either substitute part interchangeably? A: Interchangeability depends on the circuit's forward voltage operating point. If the circuit operates at 1 mA forward current, LL101A-GS08 is the direct match. If the circuit operates at 15 mA forward current, LL101A-GS18 is appropriate. Both parts meet the same voltage and current ratings.

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