MBR140LSF-TP Equivalent & Substitute Parts

Part Overview

The MBR140LSF-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 40 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123FL package. This component is classified as Obsolete, indicating it is no longer in active production. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and legacy system requirements where this diode specification remains applicable.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	400 mV @ 1 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Package / Case	SOD-123F
Mounting Type	Surface Mount
Technology	Schottky
Operating Temperature - Junction	-65°C ~ 100°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MBR140LSF-TP is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 400 mV @ 1 A
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Package / Case: SOD-123F
Mounting Type: Surface Mount
Technology: Schottky

The substitute part SL14PL-TP meets all critical electrical specifications and maintains identical package and mounting characteristics. Both parts are manufactured by Micro Commercial Co and carry ROHS3 compliance certification. Differences in product status, operating temperature range, and reverse leakage current are noted but do not prevent functional substitution within the specified electrical parameters.

Parameter Comparison

Parameter	MBR140LSF-TP	SL14PL-TP	Match Status
Manufacturer	Micro Commercial Co	Micro Commercial Co	Identical
Category	Diodes, Rectifiers	Diodes, Rectifiers	Identical
Technology	Schottky	Schottky	Identical
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	Identical
Current - Average Rectified (Io)	1 A	1 A	Identical
Voltage - Forward (Vf) (Max) @ If	400 mV @ 1 A	400 mV @ 1 A	Identical
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Identical
Current - Reverse Leakage @ Vr	1 mA @ 40 V	500 µA @ 40 V	Different
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	SOD-123F	SOD-123F	Identical
Operating Temperature - Junction	-65°C ~ 100°C	-55°C ~ 150°C	Different
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Obsolete	Not For New Designs	Different

Engineering Selection Recommendations

SL14PL-TP as Substitute for MBR140LSF-TP:

The SL14PL-TP is electrically and mechanically equivalent to the MBR140LSF-TP across all critical functional parameters. Both components are ROHS3 compliant and carry identical Moisture Sensitivity Level (MSL) ratings. The SL14PL-TP features a wider operating temperature range (-55°C ~ 150°C versus -65°C ~ 100°C) and lower reverse leakage current (500 µA @ 40 V versus 1 mA @ 40 V), both of which represent improved performance characteristics.

The SL14PL-TP is classified as "Not For New Designs," indicating it remains available for legacy system support and replacement applications. Selection of this substitute is appropriate for applications requiring direct functional replacement of the obsolete MBR140LSF-TP within the specified electrical and thermal operating envelope.

Frequently Asked Questions (FAQ)

Q: Can SL14PL-TP directly replace MBR140LSF-TP in existing circuit designs?

A: Yes. Both components share identical voltage ratings (40 V), current ratings (1 A), forward voltage characteristics (400 mV @ 1 A), switching speed (Fast Recovery ≤ 500 ns), and package configuration (SOD-123F surface mount). Electrical performance is equivalent within the specified parameters.

Q: What is the difference in reverse leakage current between these parts?

A: The MBR140LSF-TP specifies 1 mA @ 40 V reverse leakage, while the SL14PL-TP specifies 500 µA @ 40 V. The SL14PL-TP exhibits lower reverse leakage current, which may improve circuit performance in applications sensitive to leakage characteristics.

Q: Are there differences in operating temperature ranges?

A: Yes. The MBR140LSF-TP operates from -65°C to 100°C junction temperature, while the SL14PL-TP operates from -55°C to 150°C. The SL14PL-TP provides a wider upper temperature limit. Applications operating below -55°C require verification against the MBR140LSF-TP specification.

Q: Are both parts RoHS compliant?

A: Yes. Both MBR140LSF-TP and SL14PL-TP are ROHS3 compliant and carry identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited).

Q: What is the significance of the product status difference?

A: The MBR140LSF-TP is classified as Obsolete, indicating end-of-life status. The SL14PL-TP is classified as "Not For New Designs," indicating it remains available for legacy support and replacement applications but is not recommended for new product development.

Q: Are the package and mounting specifications identical?

A: Yes. Both components use the SOD-123F package in surface mount configuration, ensuring mechanical and footprint compatibility on printed circuit boards.

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