LL4150-M-18 Equivalent & Substitute Parts

Part Overview

The LL4150-M-18 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode is rated for 50 V DC reverse voltage with 600 mA average rectified current and features fast recovery characteristics with a 4 ns reverse recovery time. The device is packaged in SOD-80 MiniMELF format and qualifies for automotive applications under AEC-Q101 certification. The part is currently active in production with 742 pieces in stock. Equivalent substitute parts are identified based on matching electrical specifications and mechanical compatibility to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	600	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 200 mA	V
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	100 nA @ 50 V	nA
Capacitance @ Vr, F	2.5 pF @ 0V, 1MHz	pF
Operating Temperature - Junction (Max)	175	°C
Package / Case	DO-213AC, MINI-MELF, SOD-80	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitute parts for the LL4150-M-18 are identified through parametric equivalence. The substitution logic is based on matching the following critical parameters: maximum DC reverse voltage (50 V), average rectified current (600 mA), forward voltage drop (1 V @ 200 mA), reverse recovery time (4 ns), reverse leakage current (100 nA @ 50 V), junction capacitance (2.5 pF @ 0V, 1MHz), maximum junction temperature (175°C), package type (SOD-80 MiniMELF), surface mount mounting type, automotive grade classification, and AEC-Q101 qualification. Parts meeting all these specifications are electrically and mechanically interchangeable within the same circuit application. The LL4150-M-18 and its substitute share the same base product number (LL4150) and differ only in packaging configuration (tape & reel variant designation).

Parameter Comparison

Parameter	LL4150-M-18	LL4150-M-08	Match
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	✓
Current - Average Rectified (Io)	600 mA	600 mA	✓
Voltage - Forward (Vf) (Max) @ If	1 V @ 200 mA	1 V @ 200 mA	✓
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	✓
Reverse Recovery Time (trr)	4 ns	4 ns	✓
Current - Reverse Leakage @ Vr	100 nA @ 50 V	100 nA @ 50 V	✓
Capacitance @ Vr, F	2.5 pF @ 0V, 1MHz	2.5 pF @ 0V, 1MHz	✓
Operating Temperature - Junction (Max)	175°C	175°C	✓
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	✓
Mounting Type	Surface Mount	Surface Mount	✓
Grade	Automotive	Automotive	✓
Qualification	AEC-Q101	AEC-Q101	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓

Engineering Selection Recommendations

Both the LL4150-M-18 and LL4150-M-08 are active production parts manufactured by Vishay General Semiconductor - Diodes Division with identical electrical and mechanical specifications. Selection between these parts is based on procurement requirements and inventory availability. The LL4150-M-18 currently has 742 pieces in stock, while the LL4150-M-08 has 13,520 pieces available. Both parts carry automotive-grade classification with AEC-Q101 qualification, ROHS3 compliance, and REACH unaffected status, making them suitable for regulated applications. The parts are functionally equivalent for all circuit applications requiring a 50 V, 600 mA fast recovery rectifier diode in SOD-80 MiniMELF surface mount packaging. Selection should be based on supply chain requirements, lead time considerations, and inventory management objectives.

Frequently Asked Questions (FAQ)

Q: Are the LL4150-M-18 and LL4150-M-08 electrically interchangeable?

A: Yes. Both parts share identical electrical specifications including 50 V reverse voltage rating, 600 mA average rectified current, 1 V forward voltage drop at 200 mA, 4 ns reverse recovery time, and 100 nA reverse leakage current at 50 V. They are direct electrical equivalents.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use the same SOD-80 MiniMELF package format with surface mount mounting type. PCB footprints, solder pad layouts, and assembly processes are identical between the two parts.

Q: What is the difference between LL4150-M-18 and LL4150-M-08?

A: The parts differ only in tape & reel packaging configuration, indicated by the "-18" and "-08" suffixes. The electrical and mechanical specifications are identical. The difference relates to packaging quantity and reel specifications for automated assembly operations.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the LL4150-M-18 and LL4150-M-08 carry automotive-grade classification and hold AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: What compliance certifications apply to these parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (unlimited shelf life). Both hold AEC-Q101 automotive qualification.

Q: Which part should be selected based on availability?

A: Selection should be based on supply chain requirements and inventory management. The LL4150-M-08 has significantly higher inventory (13,520 pieces) compared to the LL4150-M-18 (742 pieces), which may influence lead time and procurement strategy.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message