LSM545J/TR13 Equivalent & Substitute Parts – Engineering Reference

Part Overview

The LSM545J/TR13 by Microchip Technology is a Schottky diode in the Diodes, Rectifiers category, designed for surface-mount applications in a DO-214AB (SMC) package. It features a maximum reverse DC voltage of 45 V, supports an average rectified current of 5 A, and has a forward voltage of 520 mV at 5 A. The product status is Active; however, due to RoHS non-compliance, engineers may require alternative models for use in applications mandating environmental compliance or process compatibility.

Key Parameters

Parameter	LSM545J/TR13
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io)	5A
Voltage - Forward (Vf) (Max) @ If	520 mV @ 5 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	2 mA @ 45 V
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	RoHS non-compliant
MSL	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute and equivalent diodes are selected based strictly on these matched parameters: Schottky technology, surface-mount DO-214AB (SMC) package, similar maximum reverse voltage (Vr), equal or greater average rectified current (Io), matching or lower forward voltage (Vf) at comparable currents, fast recovery speed (≤500ns), similar or improved reverse leakage current, and equivalent operating temperature range. Electrical and mechanical compatibility, including RoHS and MSL compliance, are further used to refine equivalence within the component category.

Parameter Comparison

Parameter	LSM545J/TR13	B540C-13-F	SK54L-TP	SK64L-TP	STPS340S	STPS340SY	STPS3L40S	STPS3L40SY
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Vr (Max)	45 V	40 V	40 V	40 V	40 V	40 V	40 V	40 V
Io	5A	5A	5A	6A	3A	3A	3A	3A
Vf (Max) @ If	520 mV @ 5 A	550 mV @ 5 A	550 mV @ 5 A	650 mV @ 6 A	630 mV @ 3 A	630 mV @ 3 A	500 mV @ 3 A	500 mV @ 3 A
Reverse Leakage @ Vr	2 mA @ 45 V	500 µA @ 40 V	1 mA @ 40 V	1 mA @ 40 V	20 µA @ 40 V	20 µA @ 40 V	100 µA @ 40 V	100 µA @ 40 V
Speed	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Operating Temp - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	150°C (Max)	-40°C ~ 150°C	150°C (Max)	-40°C ~ 150°C
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Selection among LSM545J/TR13 and listed substitutes should be determined by product status and compliance requirements. LSM545J/TR13 is RoHS non-compliant; all substitutes listed provide ROHS3 compliance. All evaluated components are rated MSL 1 (Unlimited) and present Active product status except SK64L-TP, which is listed as Not For New Designs. Compliance with REACH and ECCN: EAR99 applies across all referenced part numbers. Decision-making should be based on environmental compliance needs or supply chain policies, matched against the parameters provided.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical when substituting LSM545J/TR13 with another Schottky rectifier?
Key parameters include Schottky technology, maximum DC reverse voltage, average rectified current, max forward voltage at rated current, reverse leakage current at rated voltage, package (DO-214AB, SMC), mounting type, and operating temperature range.

Q2: Are there differences in mechanical fit for the listed substitutes?
All substitutes use the DO-214AB (SMC) surface-mount package, ensuring mechanical compatibility.

Q3: Are the substitute parts RoHS compliant?
All listed substitutes are ROHS3 compliant; LSM545J/TR13 is RoHS non-compliant.

Q4: Is there any difference in moisture sensitivity between main and substitute parts?
Every part listed, including the original and substitutes, is rated MSL 1 (Unlimited).

Q5: What product status considerations affect selection?
Most substitutes have Active status; SK64L-TP is Not For New Designs. This distinction is relevant if lifecycle management is a primary concern.

Q6: Does the substitute list include automotive-qualified options?
STPS340SY and STPS3L40SY include automotive grade or qualification.

Q7: What is the range of supported current (Io) among the substitutes?
Substitutes offer Io ratings of 3A, 5A, or 6A, as provided. Select based strictly on application current requirements and supplied parameters.

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